1971 lines
63 KiB
JavaScript
1971 lines
63 KiB
JavaScript
/*
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Coinjs 0.01 beta by OutCast3k{at}gmail.com
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A bitcoin framework.
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http://github.com/OutCast3k/coinjs or http://coinb.in/coinjs
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*/
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(function () {
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var coinjs = window.coinjs = function () { };
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/* public vars */
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coinjs.pub = 0x00;
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coinjs.priv = 0x80;
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coinjs.multisig = 0x05;
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coinjs.hdkey = {'prv':0x0488ade4, 'pub':0x0488b21e};
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coinjs.bech32 = {'charset':'qpzry9x8gf2tvdw0s3jn54khce6mua7l', 'version':0, 'hrp':'bc'};
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coinjs.compressed = false;
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/* other vars */
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coinjs.developer = '3K1oFZMks41C7qDYBsr72SYjapLqDuSYuN'; //bitcoin
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/* bit(coinb.in) api vars */
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coinjs.host = ('https:'==document.location.protocol?'https://':'http://')+'coinb.in/api/';
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coinjs.uid = '1';
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coinjs.key = '12345678901234567890123456789012';
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/* start of address functions */
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/* generate a private and public keypair, with address and WIF address */
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coinjs.newKeys = function(input){
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var privkey = (input) ? Crypto.SHA256(input) : this.newPrivkey();
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var pubkey = this.newPubkey(privkey);
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return {
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'privkey': privkey,
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'pubkey': pubkey,
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'address': this.pubkey2address(pubkey),
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'wif': this.privkey2wif(privkey),
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'compressed': this.compressed
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};
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}
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/* generate a new random private key */
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coinjs.newPrivkey = function(){
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var x = window.location;
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x += (window.screen.height * window.screen.width * window.screen.colorDepth);
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x += coinjs.random(64);
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x += (window.screen.availHeight * window.screen.availWidth * window.screen.pixelDepth);
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x += navigator.language;
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x += window.history.length;
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x += coinjs.random(64);
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x += navigator.userAgent;
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x += 'coinb.in';
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x += (Crypto.util.randomBytes(64)).join("");
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x += x.length;
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var dateObj = new Date();
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x += dateObj.getTimezoneOffset();
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x += coinjs.random(64);
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x += (document.getElementById("entropybucket")) ? document.getElementById("entropybucket").innerHTML : '';
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x += x+''+x;
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var r = x;
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for(i=0;i<(x).length/25;i++){
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r = Crypto.SHA256(r.concat(x));
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}
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var checkrBigInt = new BigInteger(r);
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var orderBigInt = new BigInteger("fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141");
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while (checkrBigInt.compareTo(orderBigInt) >= 0 || checkrBigInt.equals(BigInteger.ZERO) || checkrBigInt.equals(BigInteger.ONE)) {
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r = Crypto.SHA256(r.concat(x));
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checkrBigInt = new BigInteger(r);
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}
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return r;
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}
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/* generate a public key from a private key */
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coinjs.newPubkey = function(hash){
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var privateKeyBigInt = BigInteger.fromByteArrayUnsigned(Crypto.util.hexToBytes(hash));
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var curve = EllipticCurve.getSECCurveByName("secp256k1");
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var curvePt = curve.getG().multiply(privateKeyBigInt);
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var x = curvePt.getX().toBigInteger();
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var y = curvePt.getY().toBigInteger();
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var publicKeyBytes = EllipticCurve.integerToBytes(x, 32);
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publicKeyBytes = publicKeyBytes.concat(EllipticCurve.integerToBytes(y,32));
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publicKeyBytes.unshift(0x04);
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if(coinjs.compressed==true){
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var publicKeyBytesCompressed = EllipticCurve.integerToBytes(x,32)
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if (y.isEven()){
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publicKeyBytesCompressed.unshift(0x02)
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} else {
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publicKeyBytesCompressed.unshift(0x03)
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}
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return Crypto.util.bytesToHex(publicKeyBytesCompressed);
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} else {
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return Crypto.util.bytesToHex(publicKeyBytes);
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}
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}
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/* provide a public key and return address */
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coinjs.pubkey2address = function(h, byte){
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var r = ripemd160(Crypto.SHA256(Crypto.util.hexToBytes(h), {asBytes: true}));
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r.unshift(byte || coinjs.pub);
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var hash = Crypto.SHA256(Crypto.SHA256(r, {asBytes: true}), {asBytes: true});
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var checksum = hash.slice(0, 4);
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return coinjs.base58encode(r.concat(checksum));
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}
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/* provide a scripthash and return address */
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coinjs.scripthash2address = function(h){
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var x = Crypto.util.hexToBytes(h);
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x.unshift(coinjs.pub);
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var r = x;
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r = Crypto.SHA256(Crypto.SHA256(r,{asBytes: true}),{asBytes: true});
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var checksum = r.slice(0,4);
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return coinjs.base58encode(x.concat(checksum));
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}
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/* new multisig address, provide the pubkeys AND required signatures to release the funds */
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coinjs.pubkeys2MultisigAddress = function(pubkeys, required) {
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var s = coinjs.script();
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s.writeOp(81 + (required*1) - 1); //OP_1
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for (var i = 0; i < pubkeys.length; ++i) {
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s.writeBytes(Crypto.util.hexToBytes(pubkeys[i]));
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}
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s.writeOp(81 + pubkeys.length - 1); //OP_1
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s.writeOp(174); //OP_CHECKMULTISIG
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var x = ripemd160(Crypto.SHA256(s.buffer, {asBytes: true}), {asBytes: true});
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x.unshift(coinjs.multisig);
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var r = x;
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r = Crypto.SHA256(Crypto.SHA256(r, {asBytes: true}), {asBytes: true});
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var checksum = r.slice(0,4);
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var redeemScript = Crypto.util.bytesToHex(s.buffer);
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var address = coinjs.base58encode(x.concat(checksum));
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if(s.buffer.length > 520){ // too large
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address = 'invalid';
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redeemScript = 'invalid';
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}
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return {'address':address, 'redeemScript':redeemScript, 'size': s.buffer.length};
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}
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/* new time locked address, provide the pubkey and time necessary to unlock the funds.
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when time is greater than 500000000, it should be a unix timestamp (seconds since epoch),
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otherwise it should be the block height required before this transaction can be released.
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may throw a string on failure!
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*/
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coinjs.simpleHodlAddress = function(pubkey, checklocktimeverify) {
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if(checklocktimeverify < 0) {
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throw "Parameter for OP_CHECKLOCKTIMEVERIFY is negative.";
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}
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var s = coinjs.script();
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s.writeBytes(coinjs.numToByteArray(checklocktimeverify));
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s.writeOp(177);//OP_CHECKLOCKTIMEVERIFY
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s.writeOp(117);//OP_DROP
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s.writeBytes(Crypto.util.hexToBytes(pubkey));
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s.writeOp(172);//OP_CHECKSIG
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var x = ripemd160(Crypto.SHA256(s.buffer, {asBytes: true}), {asBytes: true});
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x.unshift(coinjs.multisig);
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var r = x;
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r = Crypto.SHA256(Crypto.SHA256(r, {asBytes: true}), {asBytes: true});
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var checksum = r.slice(0,4);
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var redeemScript = Crypto.util.bytesToHex(s.buffer);
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var address = coinjs.base58encode(x.concat(checksum));
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return {'address':address, 'redeemScript':redeemScript};
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}
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/* create a new segwit address */
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coinjs.segwitAddress = function(pubkey){
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var keyhash = [0x00,0x14].concat(ripemd160(Crypto.SHA256(Crypto.util.hexToBytes(pubkey), {asBytes: true}), {asBytes: true}));
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var x = ripemd160(Crypto.SHA256(keyhash, {asBytes: true}), {asBytes: true});
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x.unshift(coinjs.multisig);
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var r = x;
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r = Crypto.SHA256(Crypto.SHA256(r, {asBytes: true}), {asBytes: true});
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var checksum = r.slice(0,4);
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var address = coinjs.base58encode(x.concat(checksum));
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return {'address':address, 'type':'segwit', 'redeemscript':Crypto.util.bytesToHex(keyhash)};
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}
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/* create a new segwit bech32 encoded address */
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coinjs.bech32Address = function(pubkey){
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var program = ripemd160(Crypto.SHA256(Crypto.util.hexToBytes(pubkey), {asBytes: true}), {asBytes: true});
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var address = coinjs.bech32_encode(coinjs.bech32.hrp, [coinjs.bech32.version].concat(coinjs.bech32_convert(program, 8, 5, true)));
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return {'address':address, 'type':'bech32', 'redeemscript':Crypto.util.bytesToHex(program)};
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}
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/* extract the redeemscript from a bech32 address */
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coinjs.bech32redeemscript = function(address){
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var r = false;
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var decode = coinjs.bech32_decode(address);
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if(decode){
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decode.data.shift();
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return Crypto.util.bytesToHex(coinjs.bech32_convert(decode.data, 5, 8, true));
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}
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return r;
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}
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/* provide a privkey and return an WIF */
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coinjs.privkey2wif = function(h){
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var r = Crypto.util.hexToBytes(h);
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if(coinjs.compressed==true){
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r.push(0x01);
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}
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r.unshift(coinjs.priv);
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var hash = Crypto.SHA256(Crypto.SHA256(r, {asBytes: true}), {asBytes: true});
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var checksum = hash.slice(0, 4);
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return coinjs.base58encode(r.concat(checksum));
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}
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/* convert a wif key back to a private key */
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coinjs.wif2privkey = function(wif){
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var compressed = false;
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var decode = coinjs.base58decode(wif);
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var key = decode.slice(0, decode.length-4);
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key = key.slice(1, key.length);
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if(key.length>=33 && key[key.length-1]==0x01){
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key = key.slice(0, key.length-1);
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compressed = true;
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}
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return {'privkey': Crypto.util.bytesToHex(key), 'compressed':compressed};
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}
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/* convert a wif to a pubkey */
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coinjs.wif2pubkey = function(wif){
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var compressed = coinjs.compressed;
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var r = coinjs.wif2privkey(wif);
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coinjs.compressed = r['compressed'];
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var pubkey = coinjs.newPubkey(r['privkey']);
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coinjs.compressed = compressed;
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return {'pubkey':pubkey,'compressed':r['compressed']};
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}
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/* convert a wif to a address */
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coinjs.wif2address = function(wif){
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var r = coinjs.wif2pubkey(wif);
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return {'address':coinjs.pubkey2address(r['pubkey']), 'compressed':r['compressed']};
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}
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/* decode or validate an address and return the hash */
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coinjs.addressDecode = function(addr){
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try {
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var bytes = coinjs.base58decode(addr);
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var front = bytes.slice(0, bytes.length-4);
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var back = bytes.slice(bytes.length-4);
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var checksum = Crypto.SHA256(Crypto.SHA256(front, {asBytes: true}), {asBytes: true}).slice(0, 4);
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if (checksum+"" == back+"") {
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var o = {};
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o.bytes = front.slice(1);
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o.version = front[0];
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if(o.version==coinjs.pub){ // standard address
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o.type = 'standard';
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} else if (o.version==coinjs.multisig) { // multisig address
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o.type = 'multisig';
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} else if (o.version==coinjs.priv){ // wifkey
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o.type = 'wifkey';
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} else if (o.version==42) { // stealth address
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o.type = 'stealth';
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o.option = front[1];
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if (o.option != 0) {
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alert("Stealth Address option other than 0 is currently not supported!");
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return false;
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};
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o.scankey = Crypto.util.bytesToHex(front.slice(2, 35));
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o.n = front[35];
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if (o.n > 1) {
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alert("Stealth Multisig is currently not supported!");
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return false;
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};
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o.spendkey = Crypto.util.bytesToHex(front.slice(36, 69));
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o.m = front[69];
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o.prefixlen = front[70];
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if (o.prefixlen > 0) {
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alert("Stealth Address Prefixes are currently not supported!");
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return false;
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};
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o.prefix = front.slice(71);
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} else { // everything else
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o.type = 'other'; // address is still valid but unknown version
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}
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return o;
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} else {
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return false;
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}
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} catch(e) {
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bech32rs = coinjs.bech32redeemscript(addr);
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if(bech32rs){
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return {'type':'bech32', 'redeemscript':bech32rs};
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} else {
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return false;
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}
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}
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}
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/* retreive the balance from a given address */
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coinjs.addressBalance = function(address, callback){
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coinjs.ajax(coinjs.host+'?uid='+coinjs.uid+'&key='+coinjs.key+'&setmodule=addresses&request=bal&address='+address+'&r='+Math.random(), callback, "GET");
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}
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/* decompress an compressed public key */
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coinjs.pubkeydecompress = function(pubkey) {
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if((typeof(pubkey) == 'string') && pubkey.match(/^[a-f0-9]+$/i)){
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var curve = EllipticCurve.getSECCurveByName("secp256k1");
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try {
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var pt = curve.curve.decodePointHex(pubkey);
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var x = pt.getX().toBigInteger();
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var y = pt.getY().toBigInteger();
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var publicKeyBytes = EllipticCurve.integerToBytes(x, 32);
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publicKeyBytes = publicKeyBytes.concat(EllipticCurve.integerToBytes(y,32));
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publicKeyBytes.unshift(0x04);
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return Crypto.util.bytesToHex(publicKeyBytes);
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} catch (e) {
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// console.log(e);
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return false;
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}
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}
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return false;
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}
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coinjs.bech32_polymod = function(values) {
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var chk = 1;
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var BECH32_GENERATOR = [0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3];
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for (var p = 0; p < values.length; ++p) {
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var top = chk >> 25;
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chk = (chk & 0x1ffffff) << 5 ^ values[p];
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for (var i = 0; i < 5; ++i) {
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if ((top >> i) & 1) {
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chk ^= BECH32_GENERATOR[i];
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}
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}
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}
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return chk;
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}
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coinjs.bech32_hrpExpand = function(hrp) {
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var ret = [];
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var p;
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for (p = 0; p < hrp.length; ++p) {
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ret.push(hrp.charCodeAt(p) >> 5);
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}
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ret.push(0);
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for (p = 0; p < hrp.length; ++p) {
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ret.push(hrp.charCodeAt(p) & 31);
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}
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return ret;
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}
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coinjs. bech32_verifyChecksum = function(hrp, data) {
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return coinjs.bech32_polymod(coinjs.bech32_hrpExpand(hrp).concat(data)) === 1;
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}
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coinjs.bech32_createChecksum = function(hrp, data) {
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var values = coinjs.bech32_hrpExpand(hrp).concat(data).concat([0, 0, 0, 0, 0, 0]);
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var mod = coinjs.bech32_polymod(values) ^ 1;
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var ret = [];
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for (var p = 0; p < 6; ++p) {
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ret.push((mod >> 5 * (5 - p)) & 31);
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}
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return ret;
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}
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coinjs.bech32_encode = function(hrp, data) {
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var combined = data.concat(coinjs.bech32_createChecksum(hrp, data));
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var ret = hrp + '1';
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for (var p = 0; p < combined.length; ++p) {
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ret += coinjs.bech32.charset.charAt(combined[p]);
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}
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return ret;
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}
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coinjs.bech32_decode = function(bechString) {
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var p;
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var has_lower = false;
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var has_upper = false;
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for (p = 0; p < bechString.length; ++p) {
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if (bechString.charCodeAt(p) < 33 || bechString.charCodeAt(p) > 126) {
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return null;
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}
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if (bechString.charCodeAt(p) >= 97 && bechString.charCodeAt(p) <= 122) {
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has_lower = true;
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}
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if (bechString.charCodeAt(p) >= 65 && bechString.charCodeAt(p) <= 90) {
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has_upper = true;
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}
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}
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if (has_lower && has_upper) {
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return null;
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}
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bechString = bechString.toLowerCase();
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var pos = bechString.lastIndexOf('1');
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if (pos < 1 || pos + 7 > bechString.length || bechString.length > 90) {
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return null;
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}
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var hrp = bechString.substring(0, pos);
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var data = [];
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for (p = pos + 1; p < bechString.length; ++p) {
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var d = coinjs.bech32.charset.indexOf(bechString.charAt(p));
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if (d === -1) {
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return null;
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}
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data.push(d);
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}
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if (!coinjs.bech32_verifyChecksum(hrp, data)) {
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return null;
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}
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return {
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hrp: hrp,
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data: data.slice(0, data.length - 6)
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};
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}
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coinjs.bech32_convert = function(data, inBits, outBits, pad) {
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var value = 0;
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var bits = 0;
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var maxV = (1 << outBits) - 1;
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var result = [];
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for (var i = 0; i < data.length; ++i) {
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value = (value << inBits) | data[i];
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bits += inBits;
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while (bits >= outBits) {
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bits -= outBits;
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result.push((value >> bits) & maxV);
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}
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}
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if (pad) {
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if (bits > 0) {
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result.push((value << (outBits - bits)) & maxV);
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}
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} else {
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if (bits >= inBits) throw new Error('Excess padding');
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if ((value << (outBits - bits)) & maxV) throw new Error('Non-zero padding');
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}
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return result;
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}
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|
|
|
coinjs.testdeterministicK = function() {
|
|
// https://github.com/bitpay/bitcore/blob/9a5193d8e94b0bd5b8e7f00038e7c0b935405a03/test/crypto/ecdsa.js
|
|
// Line 21 and 22 specify digest hash and privkey for the first 2 test vectors.
|
|
// Line 96-117 tells expected result.
|
|
|
|
var tx = coinjs.transaction();
|
|
|
|
var test_vectors = [
|
|
{
|
|
'message': 'test data',
|
|
'privkey': 'fee0a1f7afebf9d2a5a80c0c98a31c709681cce195cbcd06342b517970c0be1e',
|
|
'k_bad00': 'fcce1de7a9bcd6b2d3defade6afa1913fb9229e3b7ddf4749b55c4848b2a196e',
|
|
'k_bad01': '727fbcb59eb48b1d7d46f95a04991fc512eb9dbf9105628e3aec87428df28fd8',
|
|
'k_bad15': '398f0e2c9f79728f7b3d84d447ac3a86d8b2083c8f234a0ffa9c4043d68bd258'
|
|
},
|
|
{
|
|
'message': 'Everything should be made as simple as possible, but not simpler.',
|
|
'privkey': '0000000000000000000000000000000000000000000000000000000000000001',
|
|
'k_bad00': 'ec633bd56a5774a0940cb97e27a9e4e51dc94af737596a0c5cbb3d30332d92a5',
|
|
'k_bad01': 'df55b6d1b5c48184622b0ead41a0e02bfa5ac3ebdb4c34701454e80aabf36f56',
|
|
'k_bad15': 'def007a9a3c2f7c769c75da9d47f2af84075af95cadd1407393dc1e26086ef87'
|
|
},
|
|
{
|
|
'message': 'Satoshi Nakamoto',
|
|
'privkey': '0000000000000000000000000000000000000000000000000000000000000002',
|
|
'k_bad00': 'd3edc1b8224e953f6ee05c8bbf7ae228f461030e47caf97cde91430b4607405e',
|
|
'k_bad01': 'f86d8e43c09a6a83953f0ab6d0af59fb7446b4660119902e9967067596b58374',
|
|
'k_bad15': '241d1f57d6cfd2f73b1ada7907b199951f95ef5ad362b13aed84009656e0254a'
|
|
},
|
|
{
|
|
'message': 'Diffie Hellman',
|
|
'privkey': '7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f',
|
|
'k_bad00': 'c378a41cb17dce12340788dd3503635f54f894c306d52f6e9bc4b8f18d27afcc',
|
|
'k_bad01': '90756c96fef41152ac9abe08819c4e95f16da2af472880192c69a2b7bac29114',
|
|
'k_bad15': '7b3f53300ab0ccd0f698f4d67db87c44cf3e9e513d9df61137256652b2e94e7c'
|
|
},
|
|
{
|
|
'message': 'Japan',
|
|
'privkey': '8080808080808080808080808080808080808080808080808080808080808080',
|
|
'k_bad00': 'f471e61b51d2d8db78f3dae19d973616f57cdc54caaa81c269394b8c34edcf59',
|
|
'k_bad01': '6819d85b9730acc876fdf59e162bf309e9f63dd35550edf20869d23c2f3e6d17',
|
|
'k_bad15': 'd8e8bae3ee330a198d1f5e00ad7c5f9ed7c24c357c0a004322abca5d9cd17847'
|
|
},
|
|
{
|
|
'message': 'Bitcoin',
|
|
'privkey': 'fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364140',
|
|
'k_bad00': '36c848ffb2cbecc5422c33a994955b807665317c1ce2a0f59c689321aaa631cc',
|
|
'k_bad01': '4ed8de1ec952a4f5b3bd79d1ff96446bcd45cabb00fc6ca127183e14671bcb85',
|
|
'k_bad15': '56b6f47babc1662c011d3b1f93aa51a6e9b5f6512e9f2e16821a238d450a31f8'
|
|
},
|
|
{
|
|
'message': 'i2FLPP8WEus5WPjpoHwheXOMSobUJVaZM1JPMQZq',
|
|
'privkey': 'fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364140',
|
|
'k_bad00': '6e9b434fcc6bbb081a0463c094356b47d62d7efae7da9c518ed7bac23f4e2ed6',
|
|
'k_bad01': 'ae5323ae338d6117ce8520a43b92eacd2ea1312ae514d53d8e34010154c593bb',
|
|
'k_bad15': '3eaa1b61d1b8ab2f1ca71219c399f2b8b3defa624719f1e96fe3957628c2c4ea'
|
|
},
|
|
{
|
|
'message': 'lEE55EJNP7aLrMtjkeJKKux4Yg0E8E1SAJnWTCEh',
|
|
'privkey': '3881e5286abc580bb6139fe8e83d7c8271c6fe5e5c2d640c1f0ed0e1ee37edc9',
|
|
'k_bad00': '5b606665a16da29cc1c5411d744ab554640479dd8abd3c04ff23bd6b302e7034',
|
|
'k_bad01': 'f8b25263152c042807c992eacd2ac2cc5790d1e9957c394f77ea368e3d9923bd',
|
|
'k_bad15': 'ea624578f7e7964ac1d84adb5b5087dd14f0ee78b49072aa19051cc15dab6f33'
|
|
},
|
|
{
|
|
'message': '2SaVPvhxkAPrayIVKcsoQO5DKA8Uv5X/esZFlf+y',
|
|
'privkey': '7259dff07922de7f9c4c5720d68c9745e230b32508c497dd24cb95ef18856631',
|
|
'k_bad00': '3ab6c19ab5d3aea6aa0c6da37516b1d6e28e3985019b3adb388714e8f536686b',
|
|
'k_bad01': '19af21b05004b0ce9cdca82458a371a9d2cf0dc35a813108c557b551c08eb52e',
|
|
'k_bad15': '117a32665fca1b7137a91c4739ac5719fec0cf2e146f40f8e7c21b45a07ebc6a'
|
|
},
|
|
{
|
|
'message': '00A0OwO2THi7j5Z/jp0FmN6nn7N/DQd6eBnCS+/b',
|
|
'privkey': '0d6ea45d62b334777d6995052965c795a4f8506044b4fd7dc59c15656a28f7aa',
|
|
'k_bad00': '79487de0c8799158294d94c0eb92ee4b567e4dc7ca18addc86e49d31ce1d2db6',
|
|
'k_bad01': '9561d2401164a48a8f600882753b3105ebdd35e2358f4f808c4f549c91490009',
|
|
'k_bad15': 'b0d273634129ff4dbdf0df317d4062a1dbc58818f88878ffdb4ec511c77976c0'
|
|
}
|
|
];
|
|
|
|
var result_txt = '\n----------------------\nResults\n----------------------\n\n';
|
|
|
|
for (i = 0; i < test_vectors.length; i++) {
|
|
var hash = Crypto.SHA256(test_vectors[i]['message'].split('').map(function (c) { return c.charCodeAt (0); }), { asBytes: true });
|
|
var wif = coinjs.privkey2wif(test_vectors[i]['privkey']);
|
|
|
|
var KBigInt = tx.deterministicK(wif, hash);
|
|
var KBigInt0 = tx.deterministicK(wif, hash, 0);
|
|
var KBigInt1 = tx.deterministicK(wif, hash, 1);
|
|
var KBigInt15 = tx.deterministicK(wif, hash, 15);
|
|
|
|
var K = Crypto.util.bytesToHex(KBigInt.toByteArrayUnsigned());
|
|
var K0 = Crypto.util.bytesToHex(KBigInt0.toByteArrayUnsigned());
|
|
var K1 = Crypto.util.bytesToHex(KBigInt1.toByteArrayUnsigned());
|
|
var K15 = Crypto.util.bytesToHex(KBigInt15.toByteArrayUnsigned());
|
|
|
|
if (K != test_vectors[i]['k_bad00']) {
|
|
result_txt += 'Failed Test #' + (i + 1) + '\n K = ' + K + '\nExpected = ' + test_vectors[i]['k_bad00'] + '\n\n';
|
|
} else if (K0 != test_vectors[i]['k_bad00']) {
|
|
result_txt += 'Failed Test #' + (i + 1) + '\n K0 = ' + K0 + '\nExpected = ' + test_vectors[i]['k_bad00'] + '\n\n';
|
|
} else if (K1 != test_vectors[i]['k_bad01']) {
|
|
result_txt += 'Failed Test #' + (i + 1) + '\n K1 = ' + K1 + '\nExpected = ' + test_vectors[i]['k_bad01'] + '\n\n';
|
|
} else if (K15 != test_vectors[i]['k_bad15']) {
|
|
result_txt += 'Failed Test #' + (i + 1) + '\n K15 = ' + K15 + '\nExpected = ' + test_vectors[i]['k_bad15'] + '\n\n';
|
|
};
|
|
};
|
|
|
|
if (result_txt.length < 60) {
|
|
result_txt = 'All Tests OK!';
|
|
};
|
|
|
|
return result_txt;
|
|
};
|
|
|
|
/* start of hd functions, thanks bip32.org */
|
|
coinjs.hd = function(data){
|
|
|
|
var r = {};
|
|
|
|
/* some hd value parsing */
|
|
r.parse = function() {
|
|
|
|
var bytes = [];
|
|
|
|
// some quick validation
|
|
if(typeof(data) == 'string'){
|
|
var decoded = coinjs.base58decode(data);
|
|
if(decoded.length == 82){
|
|
var checksum = decoded.slice(78, 82);
|
|
var hash = Crypto.SHA256(Crypto.SHA256(decoded.slice(0, 78), { asBytes: true } ), { asBytes: true } );
|
|
if(checksum[0]==hash[0] && checksum[1]==hash[1] && checksum[2]==hash[2] && checksum[3]==hash[3]){
|
|
bytes = decoded.slice(0, 78);
|
|
}
|
|
}
|
|
}
|
|
|
|
// actual parsing code
|
|
if(bytes && bytes.length>0) {
|
|
r.version = coinjs.uint(bytes.slice(0, 4) , 4);
|
|
r.depth = coinjs.uint(bytes.slice(4, 5) ,1);
|
|
r.parent_fingerprint = bytes.slice(5, 9);
|
|
r.child_index = coinjs.uint(bytes.slice(9, 13), 4);
|
|
r.chain_code = bytes.slice(13, 45);
|
|
r.key_bytes = bytes.slice(45, 78);
|
|
|
|
var c = coinjs.compressed; // get current default
|
|
coinjs.compressed = true;
|
|
|
|
if(r.key_bytes[0] == 0x00) {
|
|
r.type = 'private';
|
|
var privkey = (r.key_bytes).slice(1, 33);
|
|
var privkeyHex = Crypto.util.bytesToHex(privkey);
|
|
var pubkey = coinjs.newPubkey(privkeyHex);
|
|
|
|
r.keys = {'privkey':privkeyHex,
|
|
'pubkey':pubkey,
|
|
'address':coinjs.pubkey2address(pubkey),
|
|
'wif':coinjs.privkey2wif(privkeyHex)};
|
|
|
|
} else if(r.key_bytes[0] == 0x02 || r.key_bytes[0] == 0x03) {
|
|
r.type = 'public';
|
|
var pubkeyHex = Crypto.util.bytesToHex(r.key_bytes);
|
|
|
|
r.keys = {'pubkey': pubkeyHex,
|
|
'address':coinjs.pubkey2address(pubkeyHex)};
|
|
} else {
|
|
r.type = 'invalid';
|
|
}
|
|
|
|
r.keys_extended = r.extend();
|
|
|
|
coinjs.compressed = c; // reset to default
|
|
}
|
|
}
|
|
|
|
// extend prv/pub key
|
|
r.extend = function(){
|
|
var hd = coinjs.hd();
|
|
return hd.make({'depth':(this.depth*1)+1,
|
|
'parent_fingerprint':this.parent_fingerprint,
|
|
'child_index':this.child_index,
|
|
'chain_code':this.chain_code,
|
|
'privkey':this.keys.privkey,
|
|
'pubkey':this.keys.pubkey});
|
|
}
|
|
|
|
// derive key from index
|
|
r.derive = function(i){
|
|
i = (i)?i:0;
|
|
var blob = (Crypto.util.hexToBytes(this.keys.pubkey)).concat(coinjs.numToBytes(i,4).reverse());
|
|
|
|
var j = new jsSHA(Crypto.util.bytesToHex(blob), 'HEX');
|
|
var hash = j.getHMAC(Crypto.util.bytesToHex(r.chain_code), "HEX", "SHA-512", "HEX");
|
|
|
|
var il = new BigInteger(hash.slice(0, 64), 16);
|
|
var ir = Crypto.util.hexToBytes(hash.slice(64,128));
|
|
|
|
var ecparams = EllipticCurve.getSECCurveByName("secp256k1");
|
|
var curve = ecparams.getCurve();
|
|
|
|
var k, key, pubkey, o;
|
|
|
|
o = coinjs.clone(this);
|
|
o.chain_code = ir;
|
|
o.child_index = i;
|
|
|
|
if(this.type=='private'){
|
|
// derive key pair from from a xprv key
|
|
k = il.add(new BigInteger([0].concat(Crypto.util.hexToBytes(this.keys.privkey)))).mod(ecparams.getN());
|
|
key = Crypto.util.bytesToHex(k.toByteArrayUnsigned());
|
|
|
|
pubkey = coinjs.newPubkey(key);
|
|
|
|
o.keys = {'privkey':key,
|
|
'pubkey':pubkey,
|
|
'wif':coinjs.privkey2wif(key),
|
|
'address':coinjs.pubkey2address(pubkey)};
|
|
|
|
} else if (this.type=='public'){
|
|
// derive xpub key from an xpub key
|
|
q = ecparams.curve.decodePointHex(this.keys.pubkey);
|
|
var curvePt = ecparams.getG().multiply(il).add(q);
|
|
|
|
var x = curvePt.getX().toBigInteger();
|
|
var y = curvePt.getY().toBigInteger();
|
|
|
|
var publicKeyBytesCompressed = EllipticCurve.integerToBytes(x,32)
|
|
if (y.isEven()){
|
|
publicKeyBytesCompressed.unshift(0x02)
|
|
} else {
|
|
publicKeyBytesCompressed.unshift(0x03)
|
|
}
|
|
pubkey = Crypto.util.bytesToHex(publicKeyBytesCompressed);
|
|
|
|
o.keys = {'pubkey':pubkey,
|
|
'address':coinjs.pubkey2address(pubkey)}
|
|
} else {
|
|
// fail
|
|
}
|
|
|
|
o.parent_fingerprint = (ripemd160(Crypto.SHA256(Crypto.util.hexToBytes(r.keys.pubkey),{asBytes:true}),{asBytes:true})).slice(0,4);
|
|
o.keys_extended = o.extend();
|
|
|
|
return o;
|
|
}
|
|
|
|
// make a master hd xprv/xpub
|
|
r.master = function(pass) {
|
|
var seed = (pass) ? Crypto.SHA256(pass) : coinjs.newPrivkey();
|
|
var hasher = new jsSHA(seed, 'HEX');
|
|
var I = hasher.getHMAC("Bitcoin seed", "TEXT", "SHA-512", "HEX");
|
|
|
|
var privkey = Crypto.util.hexToBytes(I.slice(0, 64));
|
|
var chain = Crypto.util.hexToBytes(I.slice(64, 128));
|
|
|
|
var hd = coinjs.hd();
|
|
return hd.make({'depth':0,
|
|
'parent_fingerprint':[0,0,0,0],
|
|
'child_index':0,
|
|
'chain_code':chain,
|
|
'privkey':I.slice(0, 64),
|
|
'pubkey':coinjs.newPubkey(I.slice(0, 64))});
|
|
}
|
|
|
|
// encode data to a base58 string
|
|
r.make = function(data){ // { (int) depth, (array) parent_fingerprint, (int) child_index, (byte array) chain_code, (hex str) privkey, (hex str) pubkey}
|
|
var k = [];
|
|
|
|
//depth
|
|
k.push(data.depth*1);
|
|
|
|
//parent fingerprint
|
|
k = k.concat(data.parent_fingerprint);
|
|
|
|
//child index
|
|
k = k.concat((coinjs.numToBytes(data.child_index, 4)).reverse());
|
|
|
|
//Chain code
|
|
k = k.concat(data.chain_code);
|
|
|
|
var o = {}; // results
|
|
|
|
//encode xprv key
|
|
if(data.privkey){
|
|
var prv = (coinjs.numToBytes(coinjs.hdkey.prv, 4)).reverse();
|
|
prv = prv.concat(k);
|
|
prv.push(0x00);
|
|
prv = prv.concat(Crypto.util.hexToBytes(data.privkey));
|
|
var hash = Crypto.SHA256( Crypto.SHA256(prv, { asBytes: true } ), { asBytes: true } );
|
|
var checksum = hash.slice(0, 4);
|
|
var ret = prv.concat(checksum);
|
|
o.privkey = coinjs.base58encode(ret);
|
|
}
|
|
|
|
//encode xpub key
|
|
if(data.pubkey){
|
|
var pub = (coinjs.numToBytes(coinjs.hdkey.pub, 4)).reverse();
|
|
pub = pub.concat(k);
|
|
pub = pub.concat(Crypto.util.hexToBytes(data.pubkey));
|
|
var hash = Crypto.SHA256( Crypto.SHA256(pub, { asBytes: true } ), { asBytes: true } );
|
|
var checksum = hash.slice(0, 4);
|
|
var ret = pub.concat(checksum);
|
|
o.pubkey = coinjs.base58encode(ret);
|
|
}
|
|
return o;
|
|
}
|
|
|
|
r.parse();
|
|
return r;
|
|
}
|
|
|
|
|
|
/* start of script functions */
|
|
coinjs.script = function(data) {
|
|
var r = {};
|
|
|
|
if(!data){
|
|
r.buffer = [];
|
|
} else if ("string" == typeof data) {
|
|
r.buffer = Crypto.util.hexToBytes(data);
|
|
} else if (coinjs.isArray(data)) {
|
|
r.buffer = data;
|
|
} else if (data instanceof coinjs.script) {
|
|
r.buffer = data.buffer;
|
|
} else {
|
|
r.buffer = data;
|
|
}
|
|
|
|
/* parse buffer array */
|
|
r.parse = function () {
|
|
|
|
var self = this;
|
|
r.chunks = [];
|
|
var i = 0;
|
|
|
|
function readChunk(n) {
|
|
self.chunks.push(self.buffer.slice(i, i + n));
|
|
i += n;
|
|
};
|
|
|
|
while (i < this.buffer.length) {
|
|
var opcode = this.buffer[i++];
|
|
if (opcode >= 0xF0) {
|
|
opcode = (opcode << 8) | this.buffer[i++];
|
|
}
|
|
|
|
var len;
|
|
if (opcode > 0 && opcode < 76) { //OP_PUSHDATA1
|
|
readChunk(opcode);
|
|
} else if (opcode == 76) { //OP_PUSHDATA1
|
|
len = this.buffer[i++];
|
|
readChunk(len);
|
|
} else if (opcode == 77) { //OP_PUSHDATA2
|
|
len = (this.buffer[i++] << 8) | this.buffer[i++];
|
|
readChunk(len);
|
|
} else if (opcode == 78) { //OP_PUSHDATA4
|
|
len = (this.buffer[i++] << 24) | (this.buffer[i++] << 16) | (this.buffer[i++] << 8) | this.buffer[i++];
|
|
readChunk(len);
|
|
} else {
|
|
this.chunks.push(opcode);
|
|
}
|
|
|
|
if(i<0x00){
|
|
break;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
/* decode the redeemscript of a multisignature transaction */
|
|
r.decodeRedeemScript = function(script){
|
|
var r = false;
|
|
try {
|
|
var s = coinjs.script(Crypto.util.hexToBytes(script));
|
|
if((s.chunks.length>=3) && s.chunks[s.chunks.length-1] == 174){//OP_CHECKMULTISIG
|
|
r = {};
|
|
r.signaturesRequired = s.chunks[0]-80;
|
|
var pubkeys = [];
|
|
for(var i=1;i<s.chunks.length-2;i++){
|
|
pubkeys.push(Crypto.util.bytesToHex(s.chunks[i]));
|
|
}
|
|
r.pubkeys = pubkeys;
|
|
var multi = coinjs.pubkeys2MultisigAddress(pubkeys, r.signaturesRequired);
|
|
r.address = multi['address'];
|
|
r.type = 'multisig__'; // using __ for now to differentiat from the other object .type == "multisig"
|
|
} else if((s.chunks.length==2) && (s.buffer[0] == 0 && s.buffer[1] == 20)){ // SEGWIT
|
|
r = {};
|
|
r.type = "segwit__";
|
|
var rs = Crypto.util.bytesToHex(s.buffer);
|
|
r.address = coinjs.pubkey2address(rs, coinjs.multisig);
|
|
r.redeemscript = rs;
|
|
|
|
} else if(s.chunks.length == 5 && s.chunks[1] == 177 && s.chunks[2] == 117 && s.chunks[4] == 172){
|
|
// ^ <unlocktime> OP_CHECKLOCKTIMEVERIFY OP_DROP <pubkey> OP_CHECKSIG ^
|
|
r = {}
|
|
r.pubkey = Crypto.util.bytesToHex(s.chunks[3]);
|
|
r.checklocktimeverify = coinjs.bytesToNum(s.chunks[0].slice());
|
|
r.address = coinjs.simpleHodlAddress(r.pubkey, r.checklocktimeverify).address;
|
|
r.type = "hodl__";
|
|
}
|
|
} catch(e) {
|
|
// console.log(e);
|
|
r = false;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
/* create output script to spend */
|
|
r.spendToScript = function(address){
|
|
var addr = coinjs.addressDecode(address);
|
|
var s = coinjs.script();
|
|
if(addr.type == "bech32"){
|
|
s.writeOp(0);
|
|
s.writeBytes(Crypto.util.hexToBytes(addr.redeemscript));
|
|
} else if(addr.version==coinjs.multisig){ // multisig address
|
|
s.writeOp(169); //OP_HASH160
|
|
s.writeBytes(addr.bytes);
|
|
s.writeOp(135); //OP_EQUAL
|
|
} else { // regular address
|
|
s.writeOp(118); //OP_DUP
|
|
s.writeOp(169); //OP_HASH160
|
|
s.writeBytes(addr.bytes);
|
|
s.writeOp(136); //OP_EQUALVERIFY
|
|
s.writeOp(172); //OP_CHECKSIG
|
|
}
|
|
return s;
|
|
}
|
|
|
|
/* geneate a (script) pubkey hash of the address - used for when signing */
|
|
r.pubkeyHash = function(address) {
|
|
var addr = coinjs.addressDecode(address);
|
|
var s = coinjs.script();
|
|
s.writeOp(118);//OP_DUP
|
|
s.writeOp(169);//OP_HASH160
|
|
s.writeBytes(addr.bytes);
|
|
s.writeOp(136);//OP_EQUALVERIFY
|
|
s.writeOp(172);//OP_CHECKSIG
|
|
return s;
|
|
}
|
|
|
|
/* write to buffer */
|
|
r.writeOp = function(op){
|
|
this.buffer.push(op);
|
|
this.chunks.push(op);
|
|
return true;
|
|
}
|
|
|
|
/* write bytes to buffer */
|
|
r.writeBytes = function(data){
|
|
if (data.length < 76) { //OP_PUSHDATA1
|
|
this.buffer.push(data.length);
|
|
} else if (data.length <= 0xff) {
|
|
this.buffer.push(76); //OP_PUSHDATA1
|
|
this.buffer.push(data.length);
|
|
} else if (data.length <= 0xffff) {
|
|
this.buffer.push(77); //OP_PUSHDATA2
|
|
this.buffer.push(data.length & 0xff);
|
|
this.buffer.push((data.length >>> 8) & 0xff);
|
|
} else {
|
|
this.buffer.push(78); //OP_PUSHDATA4
|
|
this.buffer.push(data.length & 0xff);
|
|
this.buffer.push((data.length >>> 8) & 0xff);
|
|
this.buffer.push((data.length >>> 16) & 0xff);
|
|
this.buffer.push((data.length >>> 24) & 0xff);
|
|
}
|
|
this.buffer = this.buffer.concat(data);
|
|
this.chunks.push(data);
|
|
return true;
|
|
}
|
|
|
|
r.parse();
|
|
return r;
|
|
}
|
|
|
|
/* start of transaction functions */
|
|
|
|
/* create a new transaction object */
|
|
coinjs.transaction = function() {
|
|
|
|
var r = {};
|
|
r.version = 1;
|
|
r.lock_time = 0;
|
|
r.ins = [];
|
|
r.outs = [];
|
|
r.witness = false;
|
|
r.timestamp = null;
|
|
r.block = null;
|
|
|
|
/* add an input to a transaction */
|
|
r.addinput = function(txid, index, script, sequence){
|
|
var o = {};
|
|
o.outpoint = {'hash':txid, 'index':index};
|
|
o.script = coinjs.script(script||[]);
|
|
o.sequence = sequence || ((r.lock_time==0) ? 4294967295 : 0);
|
|
return this.ins.push(o);
|
|
}
|
|
|
|
/* add an output to a transaction */
|
|
r.addoutput = function(address, value){
|
|
var o = {};
|
|
o.value = new BigInteger('' + Math.round((value*1) * 1e8), 10);
|
|
var s = coinjs.script();
|
|
o.script = s.spendToScript(address);
|
|
|
|
return this.outs.push(o);
|
|
}
|
|
|
|
/* add two outputs for stealth addresses to a transaction */
|
|
r.addstealth = function(stealth, value){
|
|
var ephemeralKeyBigInt = BigInteger.fromByteArrayUnsigned(Crypto.util.hexToBytes(coinjs.newPrivkey()));
|
|
var curve = EllipticCurve.getSECCurveByName("secp256k1");
|
|
|
|
var p = EllipticCurve.fromHex("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F");
|
|
var a = BigInteger.ZERO;
|
|
var b = EllipticCurve.fromHex("7");
|
|
var calccurve = new EllipticCurve.CurveFp(p, a, b);
|
|
|
|
var ephemeralPt = curve.getG().multiply(ephemeralKeyBigInt);
|
|
var scanPt = calccurve.decodePointHex(stealth.scankey);
|
|
var sharedPt = scanPt.multiply(ephemeralKeyBigInt);
|
|
var stealthindexKeyBigInt = BigInteger.fromByteArrayUnsigned(Crypto.SHA256(sharedPt.getEncoded(true), {asBytes: true}));
|
|
|
|
var stealthindexPt = curve.getG().multiply(stealthindexKeyBigInt);
|
|
var spendPt = calccurve.decodePointHex(stealth.spendkey);
|
|
var addressPt = spendPt.add(stealthindexPt);
|
|
|
|
var sendaddress = coinjs.pubkey2address(Crypto.util.bytesToHex(addressPt.getEncoded(true)));
|
|
|
|
|
|
var OPRETBytes = [6].concat(Crypto.util.randomBytes(4)).concat(ephemeralPt.getEncoded(true)); // ephemkey data
|
|
var q = coinjs.script();
|
|
q.writeOp(106); // OP_RETURN
|
|
q.writeBytes(OPRETBytes);
|
|
v = {};
|
|
v.value = 0;
|
|
v.script = q;
|
|
|
|
this.outs.push(v);
|
|
|
|
var o = {};
|
|
o.value = new BigInteger('' + Math.round((value*1) * 1e8), 10);
|
|
var s = coinjs.script();
|
|
o.script = s.spendToScript(sendaddress);
|
|
|
|
return this.outs.push(o);
|
|
}
|
|
|
|
/* add data to a transaction */
|
|
r.adddata = function(data){
|
|
var r = false;
|
|
if(((data.match(/^[a-f0-9]+$/gi)) && data.length<160) && (data.length%2)==0) {
|
|
var s = coinjs.script();
|
|
s.writeOp(106); // OP_RETURN
|
|
s.writeBytes(Crypto.util.hexToBytes(data));
|
|
o = {};
|
|
o.value = 0;
|
|
o.script = s;
|
|
return this.outs.push(o);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
/* list unspent transactions */
|
|
r.listUnspent = function(address, callback) {
|
|
coinjs.ajax(coinjs.host+'?uid='+coinjs.uid+'&key='+coinjs.key+'&setmodule=addresses&request=unspent&address='+address+'&r='+Math.random(), callback, "GET");
|
|
}
|
|
|
|
/* add unspent to transaction */
|
|
r.addUnspent = function(address, callback, script, segwit, sequence){
|
|
var self = this;
|
|
this.listUnspent(address, function(data){
|
|
var s = coinjs.script();
|
|
var value = 0;
|
|
var total = 0;
|
|
var x = {};
|
|
|
|
if (window.DOMParser) {
|
|
parser=new DOMParser();
|
|
xmlDoc=parser.parseFromString(data,"text/xml");
|
|
} else {
|
|
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
|
|
xmlDoc.async=false;
|
|
xmlDoc.loadXML(data);
|
|
}
|
|
|
|
var unspent = xmlDoc.getElementsByTagName("unspent")[0];
|
|
|
|
for(i=1;i<=unspent.childElementCount;i++){
|
|
var u = xmlDoc.getElementsByTagName("unspent_"+i)[0]
|
|
var txhash = (u.getElementsByTagName("tx_hash")[0].childNodes[0].nodeValue).match(/.{1,2}/g).reverse().join("")+'';
|
|
var n = u.getElementsByTagName("tx_output_n")[0].childNodes[0].nodeValue;
|
|
var scr = script || u.getElementsByTagName("script")[0].childNodes[0].nodeValue;
|
|
|
|
if(segwit){
|
|
/* this is a small hack to include the value with the redeemscript to make the signing procedure smoother.
|
|
It is not standard and removed during the signing procedure. */
|
|
|
|
s = coinjs.script();
|
|
s.writeBytes(Crypto.util.hexToBytes(script));
|
|
s.writeOp(0);
|
|
s.writeBytes(coinjs.numToBytes(u.getElementsByTagName("value")[0].childNodes[0].nodeValue*1, 8));
|
|
scr = Crypto.util.bytesToHex(s.buffer);
|
|
}
|
|
|
|
var seq = sequence || false;
|
|
self.addinput(txhash, n, scr, seq);
|
|
value += u.getElementsByTagName("value")[0].childNodes[0].nodeValue*1;
|
|
total++;
|
|
}
|
|
|
|
x.unspent = $(xmlDoc).find("unspent");
|
|
x.value = value;
|
|
x.total = total;
|
|
return callback(x);
|
|
});
|
|
}
|
|
|
|
/* add unspent and sign */
|
|
r.addUnspentAndSign = function(wif, callback){
|
|
var self = this;
|
|
var address = coinjs.wif2address(wif);
|
|
self.addUnspent(address['address'], function(data){
|
|
self.sign(wif);
|
|
return callback(data);
|
|
});
|
|
}
|
|
|
|
/* broadcast a transaction */
|
|
r.broadcast = function(callback, txhex){
|
|
var tx = txhex || this.serialize();
|
|
coinjs.ajax(coinjs.host+'?uid='+coinjs.uid+'&key='+coinjs.key+'&setmodule=bitcoin&request=sendrawtransaction&rawtx='+tx+'&r='+Math.random(), callback, "GET");
|
|
}
|
|
|
|
/* generate the transaction hash to sign from a transaction input */
|
|
r.transactionHash = function(index, sigHashType) {
|
|
|
|
var clone = coinjs.clone(this);
|
|
var shType = sigHashType || 1;
|
|
|
|
/* black out all other ins, except this one */
|
|
for (var i = 0; i < clone.ins.length; i++) {
|
|
if(index!=i){
|
|
clone.ins[i].script = coinjs.script();
|
|
}
|
|
}
|
|
|
|
var extract = this.extractScriptKey(index);
|
|
clone.ins[index].script = coinjs.script(extract['script']);
|
|
|
|
if((clone.ins) && clone.ins[index]){
|
|
|
|
/* SIGHASH : For more info on sig hashs see https://en.bitcoin.it/wiki/OP_CHECKSIG
|
|
and https://bitcoin.org/en/developer-guide#signature-hash-type */
|
|
|
|
if(shType == 1){
|
|
//SIGHASH_ALL 0x01
|
|
|
|
} else if(shType == 2){
|
|
//SIGHASH_NONE 0x02
|
|
clone.outs = [];
|
|
for (var i = 0; i < clone.ins.length; i++) {
|
|
if(index!=i){
|
|
clone.ins[i].sequence = 0;
|
|
}
|
|
}
|
|
|
|
} else if(shType == 3){
|
|
|
|
//SIGHASH_SINGLE 0x03
|
|
clone.outs.length = index + 1;
|
|
|
|
for(var i = 0; i < index; i++){
|
|
clone.outs[i].value = -1;
|
|
clone.outs[i].script.buffer = [];
|
|
}
|
|
|
|
for (var i = 0; i < clone.ins.length; i++) {
|
|
if(index!=i){
|
|
clone.ins[i].sequence = 0;
|
|
}
|
|
}
|
|
|
|
} else if (shType >= 128){
|
|
//SIGHASH_ANYONECANPAY 0x80
|
|
clone.ins = [clone.ins[index]];
|
|
|
|
if(shType==129){
|
|
// SIGHASH_ALL + SIGHASH_ANYONECANPAY
|
|
|
|
} else if(shType==130){
|
|
// SIGHASH_NONE + SIGHASH_ANYONECANPAY
|
|
clone.outs = [];
|
|
|
|
} else if(shType==131){
|
|
// SIGHASH_SINGLE + SIGHASH_ANYONECANPAY
|
|
clone.outs.length = index + 1;
|
|
for(var i = 0; i < index; i++){
|
|
clone.outs[i].value = -1;
|
|
clone.outs[i].script.buffer = [];
|
|
}
|
|
}
|
|
}
|
|
|
|
var buffer = Crypto.util.hexToBytes(clone.serialize());
|
|
buffer = buffer.concat(coinjs.numToBytes(parseInt(shType), 4));
|
|
var hash = Crypto.SHA256(buffer, {asBytes: true});
|
|
var r = Crypto.util.bytesToHex(Crypto.SHA256(hash, {asBytes: true}));
|
|
return r;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* generate a segwit transaction hash to sign from a transaction input */
|
|
r.transactionHashSegWitV0 = function(index, sigHashType){
|
|
/*
|
|
Notice: coinb.in by default, deals with segwit transactions in a non-standard way.
|
|
Segwit transactions require that input values are included in the transaction hash.
|
|
To save wasting resources and potentially slowing down this service, we include the amount with the
|
|
redeem script to generate the transaction hash and remove it after its signed.
|
|
*/
|
|
|
|
// start redeem script check
|
|
var extract = this.extractScriptKey(index);
|
|
if(extract['type'] != 'segwit'){
|
|
return {'result':0, 'fail':'redeemscript', 'response':'redeemscript missing or not valid for segwit'};
|
|
}
|
|
|
|
if(extract['value'] == -1){
|
|
return {'result':0, 'fail':'value', 'response':'unable to generate a valid segwit hash without a value'};
|
|
}
|
|
|
|
var scriptcode = Crypto.util.hexToBytes(extract['script']);
|
|
|
|
// end of redeem script check
|
|
|
|
/* P2WPKH */
|
|
if(scriptcode.length == 20){
|
|
scriptcode = [0x00,0x14].concat(scriptcode);
|
|
}
|
|
|
|
if(scriptcode.length == 22){
|
|
scriptcode = scriptcode.slice(1);
|
|
scriptcode.unshift(25, 118, 169);
|
|
scriptcode.push(136, 172);
|
|
}
|
|
|
|
var value = coinjs.numToBytes(extract['value'], 8);
|
|
|
|
// start
|
|
|
|
var zero = coinjs.numToBytes(0, 32);
|
|
var version = coinjs.numToBytes(parseInt(this.version), 4);
|
|
|
|
var bufferTmp = [];
|
|
if(!(sigHashType >= 80)){ // not sighash anyonecanpay
|
|
for(var i = 0; i < this.ins.length; i++){
|
|
bufferTmp = bufferTmp.concat(Crypto.util.hexToBytes(this.ins[i].outpoint.hash).reverse());
|
|
bufferTmp = bufferTmp.concat(coinjs.numToBytes(this.ins[i].outpoint.index, 4));
|
|
}
|
|
}
|
|
var hashPrevouts = bufferTmp.length >= 1 ? Crypto.SHA256(Crypto.SHA256(bufferTmp, {asBytes: true}), {asBytes: true}) : zero;
|
|
|
|
var bufferTmp = [];
|
|
if(!(sigHashType >= 80) && sigHashType != 2 && sigHashType != 3){ // not sighash anyonecanpay & single & none
|
|
for(var i = 0; i < this.ins.length; i++){
|
|
bufferTmp = bufferTmp.concat(coinjs.numToBytes(this.ins[i].sequence, 4));
|
|
}
|
|
}
|
|
var hashSequence = bufferTmp.length >= 1 ? Crypto.SHA256(Crypto.SHA256(bufferTmp, {asBytes: true}), {asBytes: true}) : zero;
|
|
|
|
var outpoint = Crypto.util.hexToBytes(this.ins[index].outpoint.hash).reverse();
|
|
outpoint = outpoint.concat(coinjs.numToBytes(this.ins[index].outpoint.index, 4));
|
|
|
|
var nsequence = coinjs.numToBytes(this.ins[index].sequence, 4);
|
|
var hashOutputs = zero;
|
|
var bufferTmp = [];
|
|
if(sigHashType != 2 && sigHashType != 3){ // not sighash single & none
|
|
for(var i = 0; i < this.outs.length; i++ ){
|
|
bufferTmp = bufferTmp.concat(coinjs.numToBytes(this.outs[i].value, 8));
|
|
bufferTmp = bufferTmp.concat(coinjs.numToVarInt(this.outs[i].script.buffer.length));
|
|
bufferTmp = bufferTmp.concat(this.outs[i].script.buffer);
|
|
}
|
|
hashOutputs = Crypto.SHA256(Crypto.SHA256(bufferTmp, {asBytes: true}), {asBytes: true});
|
|
|
|
} else if ((sigHashType == 2) && index < this.outs.length){ // is sighash single
|
|
bufferTmp = bufferTmp.concat(coinjs.numToBytes(this.outs[index].value, 8));
|
|
bufferTmp = bufferTmp.concat(coinjs.numToVarInt(this.outs[i].script.buffer.length));
|
|
bufferTmp = bufferTmp.concat(this.outs[index].script.buffer);
|
|
hashOutputs = Crypto.SHA256(Crypto.SHA256(bufferTmp, {asBytes: true}), {asBytes: true});
|
|
}
|
|
|
|
var locktime = coinjs.numToBytes(this.lock_time, 4);
|
|
var sighash = coinjs.numToBytes(sigHashType, 4);
|
|
|
|
var buffer = [];
|
|
buffer = buffer.concat(version);
|
|
buffer = buffer.concat(hashPrevouts);
|
|
buffer = buffer.concat(hashSequence);
|
|
buffer = buffer.concat(outpoint);
|
|
buffer = buffer.concat(scriptcode);
|
|
buffer = buffer.concat(value);
|
|
buffer = buffer.concat(nsequence);
|
|
buffer = buffer.concat(hashOutputs);
|
|
buffer = buffer.concat(locktime);
|
|
buffer = buffer.concat(sighash);
|
|
|
|
var hash = Crypto.SHA256(buffer, {asBytes: true});
|
|
return {'result':1,'hash':Crypto.util.bytesToHex(Crypto.SHA256(hash, {asBytes: true})), 'response':'hash generated'};
|
|
}
|
|
|
|
/* extract the scriptSig, used in the transactionHash() function */
|
|
r.extractScriptKey = function(index) {
|
|
if(this.ins[index]){
|
|
if((this.ins[index].script.chunks.length==5) && this.ins[index].script.chunks[4]==172 && coinjs.isArray(this.ins[index].script.chunks[2])){ //OP_CHECKSIG
|
|
// regular scriptPubkey (not signed)
|
|
return {'type':'scriptpubkey', 'signed':'false', 'signatures':0, 'script': Crypto.util.bytesToHex(this.ins[index].script.buffer)};
|
|
} else if((this.ins[index].script.chunks.length==2) && this.ins[index].script.chunks[0][0]==48 && this.ins[index].script.chunks[1].length == 5 && this.ins[index].script.chunks[1][1]==177){//OP_CHECKLOCKTIMEVERIFY
|
|
// hodl script (signed)
|
|
return {'type':'hodl', 'signed':'true', 'signatures':1, 'script': Crypto.util.bytesToHex(this.ins[index].script.buffer)};
|
|
} else if((this.ins[index].script.chunks.length==2) && this.ins[index].script.chunks[0][0]==48){
|
|
// regular scriptPubkey (probably signed)
|
|
return {'type':'scriptpubkey', 'signed':'true', 'signatures':1, 'script': Crypto.util.bytesToHex(this.ins[index].script.buffer)};
|
|
} else if(this.ins[index].script.chunks.length == 5 && this.ins[index].script.chunks[1] == 177){//OP_CHECKLOCKTIMEVERIFY
|
|
// hodl script (not signed)
|
|
return {'type':'hodl', 'signed':'false', 'signatures': 0, 'script': Crypto.util.bytesToHex(this.ins[index].script.buffer)};
|
|
} else if((this.ins[index].script.chunks.length <= 3 && this.ins[index].script.chunks.length > 0) && ((this.ins[index].script.chunks[0].length == 22 && this.ins[index].script.chunks[0][0] == 0) || (this.ins[index].script.chunks[0].length == 20 && this.ins[index].script.chunks[1] == 0))){
|
|
var signed = ((this.witness[index]) && this.witness[index].length==2) ? 'true' : 'false';
|
|
var sigs = (signed == 'true') ? 1 : 0;
|
|
var value = -1; // no value found
|
|
if((this.ins[index].script.chunks[2]) && this.ins[index].script.chunks[2].length==8){
|
|
value = coinjs.bytesToNum(this.ins[index].script.chunks[2]); // value found encoded in transaction (THIS IS NON STANDARD)
|
|
}
|
|
return {'type':'segwit', 'signed':signed, 'signatures': sigs, 'script': Crypto.util.bytesToHex(this.ins[index].script.chunks[0]), 'value': value};
|
|
} else if (this.ins[index].script.chunks[0]==0 && this.ins[index].script.chunks[this.ins[index].script.chunks.length-1][this.ins[index].script.chunks[this.ins[index].script.chunks.length-1].length-1]==174) { // OP_CHECKMULTISIG
|
|
// multisig script, with signature(s) included
|
|
return {'type':'multisig', 'signed':'true', 'signatures':this.ins[index].script.chunks.length-2, 'script': Crypto.util.bytesToHex(this.ins[index].script.chunks[this.ins[index].script.chunks.length-1])};
|
|
} else if (this.ins[index].script.chunks[0]>=80 && this.ins[index].script.chunks[this.ins[index].script.chunks.length-1]==174) { // OP_CHECKMULTISIG
|
|
// multisig script, without signature!
|
|
return {'type':'multisig', 'signed':'false', 'signatures':0, 'script': Crypto.util.bytesToHex(this.ins[index].script.buffer)};
|
|
} else if (this.ins[index].script.chunks.length==0) {
|
|
// empty
|
|
return {'type':'empty', 'signed':'false', 'signatures':0, 'script': ''};
|
|
} else {
|
|
// something else
|
|
return {'type':'unknown', 'signed':'false', 'signatures':0, 'script':Crypto.util.bytesToHex(this.ins[index].script.buffer)};
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* generate a signature from a transaction hash */
|
|
r.transactionSig = function(index, wif, sigHashType, txhash){
|
|
|
|
function serializeSig(r, s) {
|
|
var rBa = r.toByteArraySigned();
|
|
var sBa = s.toByteArraySigned();
|
|
|
|
var sequence = [];
|
|
sequence.push(0x02); // INTEGER
|
|
sequence.push(rBa.length);
|
|
sequence = sequence.concat(rBa);
|
|
|
|
sequence.push(0x02); // INTEGER
|
|
sequence.push(sBa.length);
|
|
sequence = sequence.concat(sBa);
|
|
|
|
sequence.unshift(sequence.length);
|
|
sequence.unshift(0x30); // SEQUENCE
|
|
|
|
return sequence;
|
|
}
|
|
|
|
var shType = sigHashType || 1;
|
|
var hash = txhash || Crypto.util.hexToBytes(this.transactionHash(index, shType));
|
|
|
|
if(hash){
|
|
var curve = EllipticCurve.getSECCurveByName("secp256k1");
|
|
var key = coinjs.wif2privkey(wif);
|
|
var priv = BigInteger.fromByteArrayUnsigned(Crypto.util.hexToBytes(key['privkey']));
|
|
var n = curve.getN();
|
|
var e = BigInteger.fromByteArrayUnsigned(hash);
|
|
var badrs = 0
|
|
do {
|
|
var k = this.deterministicK(wif, hash, badrs);
|
|
var G = curve.getG();
|
|
var Q = G.multiply(k);
|
|
var r = Q.getX().toBigInteger().mod(n);
|
|
var s = k.modInverse(n).multiply(e.add(priv.multiply(r))).mod(n);
|
|
badrs++
|
|
} while (r.compareTo(BigInteger.ZERO) <= 0 || s.compareTo(BigInteger.ZERO) <= 0);
|
|
|
|
// Force lower s values per BIP62
|
|
var halfn = n.shiftRight(1);
|
|
if (s.compareTo(halfn) > 0) {
|
|
s = n.subtract(s);
|
|
};
|
|
|
|
var sig = serializeSig(r, s);
|
|
sig.push(parseInt(shType, 10));
|
|
|
|
return Crypto.util.bytesToHex(sig);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// https://tools.ietf.org/html/rfc6979#section-3.2
|
|
r.deterministicK = function(wif, hash, badrs) {
|
|
// if r or s were invalid when this function was used in signing,
|
|
// we do not want to actually compute r, s here for efficiency, so,
|
|
// we can increment badrs. explained at end of RFC 6979 section 3.2
|
|
|
|
// wif is b58check encoded wif privkey.
|
|
// hash is byte array of transaction digest.
|
|
// badrs is used only if the k resulted in bad r or s.
|
|
|
|
// some necessary things out of the way for clarity.
|
|
badrs = badrs || 0;
|
|
var key = coinjs.wif2privkey(wif);
|
|
var x = Crypto.util.hexToBytes(key['privkey'])
|
|
var curve = EllipticCurve.getSECCurveByName("secp256k1");
|
|
var N = curve.getN();
|
|
|
|
// Step: a
|
|
// hash is a byteArray of the message digest. so h1 == hash in our case
|
|
|
|
// Step: b
|
|
var v = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1];
|
|
|
|
// Step: c
|
|
var k = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
|
|
|
|
// Step: d
|
|
k = Crypto.HMAC(Crypto.SHA256, v.concat([0]).concat(x).concat(hash), k, { asBytes: true });
|
|
|
|
// Step: e
|
|
v = Crypto.HMAC(Crypto.SHA256, v, k, { asBytes: true });
|
|
|
|
// Step: f
|
|
k = Crypto.HMAC(Crypto.SHA256, v.concat([1]).concat(x).concat(hash), k, { asBytes: true });
|
|
|
|
// Step: g
|
|
v = Crypto.HMAC(Crypto.SHA256, v, k, { asBytes: true });
|
|
|
|
// Step: h1
|
|
var T = [];
|
|
|
|
// Step: h2 (since we know tlen = qlen, just copy v to T.)
|
|
v = Crypto.HMAC(Crypto.SHA256, v, k, { asBytes: true });
|
|
T = v;
|
|
|
|
// Step: h3
|
|
var KBigInt = BigInteger.fromByteArrayUnsigned(T);
|
|
|
|
// loop if KBigInt is not in the range of [1, N-1] or if badrs needs incrementing.
|
|
var i = 0
|
|
while (KBigInt.compareTo(N) >= 0 || KBigInt.compareTo(BigInteger.ZERO) <= 0 || i < badrs) {
|
|
k = Crypto.HMAC(Crypto.SHA256, v.concat([0]), k, { asBytes: true });
|
|
v = Crypto.HMAC(Crypto.SHA256, v, k, { asBytes: true });
|
|
v = Crypto.HMAC(Crypto.SHA256, v, k, { asBytes: true });
|
|
T = v;
|
|
KBigInt = BigInteger.fromByteArrayUnsigned(T);
|
|
i++
|
|
};
|
|
|
|
return KBigInt;
|
|
};
|
|
|
|
/* sign a "standard" input */
|
|
r.signinput = function(index, wif, sigHashType){
|
|
var key = coinjs.wif2pubkey(wif);
|
|
var shType = sigHashType || 1;
|
|
var signature = this.transactionSig(index, wif, shType);
|
|
var s = coinjs.script();
|
|
s.writeBytes(Crypto.util.hexToBytes(signature));
|
|
s.writeBytes(Crypto.util.hexToBytes(key['pubkey']));
|
|
this.ins[index].script = s;
|
|
return true;
|
|
}
|
|
|
|
/* signs a time locked / hodl input */
|
|
r.signhodl = function(index, wif, sigHashType){
|
|
var shType = sigHashType || 1;
|
|
var signature = this.transactionSig(index, wif, shType);
|
|
var redeemScript = this.ins[index].script.buffer
|
|
var s = coinjs.script();
|
|
s.writeBytes(Crypto.util.hexToBytes(signature));
|
|
s.writeBytes(redeemScript);
|
|
this.ins[index].script = s;
|
|
return true;
|
|
}
|
|
|
|
/* sign a multisig input */
|
|
r.signmultisig = function(index, wif, sigHashType){
|
|
|
|
function scriptListPubkey(redeemScript){
|
|
var r = {};
|
|
for(var i=1;i<redeemScript.chunks.length-2;i++){
|
|
r[i] = Crypto.util.hexToBytes(coinjs.pubkeydecompress(Crypto.util.bytesToHex(redeemScript.chunks[i])));
|
|
}
|
|
return r;
|
|
}
|
|
|
|
function scriptListSigs(scriptSig){
|
|
var r = {};
|
|
var c = 0;
|
|
if (scriptSig.chunks[0]==0 && scriptSig.chunks[scriptSig.chunks.length-1][scriptSig.chunks[scriptSig.chunks.length-1].length-1]==174){
|
|
for(var i=1;i<scriptSig.chunks.length-1;i++){
|
|
if (scriptSig.chunks[i] != 0){
|
|
c++;
|
|
r[c] = scriptSig.chunks[i];
|
|
}
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
|
|
var redeemScript = (this.ins[index].script.chunks[this.ins[index].script.chunks.length-1]==174) ? this.ins[index].script.buffer : this.ins[index].script.chunks[this.ins[index].script.chunks.length-1];
|
|
|
|
var pubkeyList = scriptListPubkey(coinjs.script(redeemScript));
|
|
var sigsList = scriptListSigs(this.ins[index].script);
|
|
|
|
var shType = sigHashType || 1;
|
|
var sighash = Crypto.util.hexToBytes(this.transactionHash(index, shType));
|
|
var signature = Crypto.util.hexToBytes(this.transactionSig(index, wif, shType));
|
|
|
|
sigsList[coinjs.countObject(sigsList)+1] = signature;
|
|
|
|
var s = coinjs.script();
|
|
|
|
s.writeOp(0);
|
|
|
|
for(x in pubkeyList){
|
|
for(y in sigsList){
|
|
this.ins[index].script.buffer = redeemScript;
|
|
sighash = Crypto.util.hexToBytes(this.transactionHash(index, sigsList[y].slice(-1)[0]*1));
|
|
if(coinjs.verifySignature(sighash, sigsList[y], pubkeyList[x])){
|
|
s.writeBytes(sigsList[y]);
|
|
}
|
|
}
|
|
}
|
|
|
|
s.writeBytes(redeemScript);
|
|
this.ins[index].script = s;
|
|
return true;
|
|
}
|
|
|
|
/* sign segwit input */
|
|
r.signsegwit = function(index, wif, sigHashType){
|
|
var shType = sigHashType || 1;
|
|
|
|
var wif2 = coinjs.wif2pubkey(wif);
|
|
var segwit = coinjs.segwitAddress(wif2['pubkey']);
|
|
var bech32 = coinjs.bech32Address(wif2['pubkey']);
|
|
|
|
if((segwit['redeemscript'] == Crypto.util.bytesToHex(this.ins[index].script.chunks[0])) || (bech32['redeemscript'] == Crypto.util.bytesToHex(this.ins[index].script.chunks[0]))){
|
|
var txhash = this.transactionHashSegWitV0(index, shType);
|
|
|
|
if(txhash.result == 1){
|
|
|
|
var segwitHash = Crypto.util.hexToBytes(txhash.hash);
|
|
var signature = this.transactionSig(index, wif, shType, segwitHash);
|
|
|
|
// remove any non standard data we store, i.e. input value
|
|
var script = coinjs.script();
|
|
script.writeBytes(this.ins[index].script.chunks[0]);
|
|
this.ins[index].script = script;
|
|
|
|
if(!coinjs.isArray(this.witness)){
|
|
this.witness = [];
|
|
}
|
|
|
|
this.witness.push([signature, wif2['pubkey']]);
|
|
|
|
/* attempt to reorder witness data as best as we can.
|
|
data can't be easily validated at this stage as
|
|
we dont have access to the inputs value and
|
|
making a web call will be too slow. */
|
|
|
|
var witness_order = [];
|
|
var witness_used = [];
|
|
for(var i = 0; i < this.ins.length; i++){
|
|
for(var y = 0; y < this.witness.length; y++){
|
|
if(!witness_used.includes(y)){
|
|
var sw = coinjs.segwitAddress(this.witness[y][1]);
|
|
var b32 = coinjs.bech32Address(this.witness[y][1]);
|
|
if((sw['redeemscript'] == Crypto.util.bytesToHex(this.ins[i].script.chunks[0])) || (b32['redeemscript'] == Crypto.util.bytesToHex(this.ins[i].script.chunks[0]))){
|
|
witness_order.push(this.witness[y]);
|
|
witness_used.push(y);
|
|
if(b32['redeemscript'] == Crypto.util.bytesToHex(this.ins[i].script.chunks[0])){
|
|
this.ins[index].script = coinjs.script();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
this.witness = witness_order;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* sign inputs */
|
|
r.sign = function(wif, sigHashType){
|
|
var shType = sigHashType || 1;
|
|
for (var i = 0; i < this.ins.length; i++) {
|
|
var d = this.extractScriptKey(i);
|
|
|
|
var w2a = coinjs.wif2address(wif);
|
|
var script = coinjs.script();
|
|
var pubkeyHash = script.pubkeyHash(w2a['address']);
|
|
|
|
if(((d['type'] == 'scriptpubkey' && d['script']==Crypto.util.bytesToHex(pubkeyHash.buffer)) || d['type'] == 'empty') && d['signed'] == "false"){
|
|
this.signinput(i, wif, shType);
|
|
|
|
} else if (d['type'] == 'hodl' && d['signed'] == "false") {
|
|
this.signhodl(i, wif, shType);
|
|
|
|
} else if (d['type'] == 'multisig') {
|
|
this.signmultisig(i, wif, shType);
|
|
|
|
} else if (d['type'] == 'segwit') {
|
|
this.signsegwit(i, wif, shType);
|
|
|
|
} else {
|
|
// could not sign
|
|
}
|
|
}
|
|
return this.serialize();
|
|
}
|
|
|
|
/* serialize a transaction */
|
|
r.serialize = function(){
|
|
var buffer = [];
|
|
buffer = buffer.concat(coinjs.numToBytes(parseInt(this.version),4));
|
|
|
|
if(coinjs.isArray(this.witness)){
|
|
buffer = buffer.concat([0x00, 0x01]);
|
|
}
|
|
|
|
buffer = buffer.concat(coinjs.numToVarInt(this.ins.length));
|
|
for (var i = 0; i < this.ins.length; i++) {
|
|
var txin = this.ins[i];
|
|
buffer = buffer.concat(Crypto.util.hexToBytes(txin.outpoint.hash).reverse());
|
|
buffer = buffer.concat(coinjs.numToBytes(parseInt(txin.outpoint.index),4));
|
|
var scriptBytes = txin.script.buffer;
|
|
buffer = buffer.concat(coinjs.numToVarInt(scriptBytes.length));
|
|
buffer = buffer.concat(scriptBytes);
|
|
buffer = buffer.concat(coinjs.numToBytes(parseInt(txin.sequence),4));
|
|
}
|
|
buffer = buffer.concat(coinjs.numToVarInt(this.outs.length));
|
|
|
|
for (var i = 0; i < this.outs.length; i++) {
|
|
var txout = this.outs[i];
|
|
buffer = buffer.concat(coinjs.numToBytes(txout.value,8));
|
|
var scriptBytes = txout.script.buffer;
|
|
buffer = buffer.concat(coinjs.numToVarInt(scriptBytes.length));
|
|
buffer = buffer.concat(scriptBytes);
|
|
}
|
|
|
|
if((coinjs.isArray(this.witness)) && this.witness.length>=1){
|
|
for(var i = 0; i < this.witness.length; i++){
|
|
buffer = buffer.concat(coinjs.numToVarInt(this.witness[i].length));
|
|
for(var x = 0; x < this.witness[i].length; x++){
|
|
buffer = buffer.concat(coinjs.numToVarInt(Crypto.util.hexToBytes(this.witness[i][x]).length));
|
|
buffer = buffer.concat(Crypto.util.hexToBytes(this.witness[i][x]));
|
|
}
|
|
}
|
|
}
|
|
|
|
buffer = buffer.concat(coinjs.numToBytes(parseInt(this.lock_time),4));
|
|
return Crypto.util.bytesToHex(buffer);
|
|
}
|
|
|
|
/* deserialize a transaction */
|
|
r.deserialize = function(buffer){
|
|
if (typeof buffer == "string") {
|
|
buffer = Crypto.util.hexToBytes(buffer)
|
|
}
|
|
|
|
var pos = 0;
|
|
var witness = false;
|
|
|
|
var readAsInt = function(bytes) {
|
|
if (bytes == 0) return 0;
|
|
pos++;
|
|
return buffer[pos-1] + readAsInt(bytes-1) * 256;
|
|
}
|
|
|
|
var readVarInt = function() {
|
|
pos++;
|
|
if (buffer[pos-1] < 253) {
|
|
return buffer[pos-1];
|
|
}
|
|
return readAsInt(buffer[pos-1] - 251);
|
|
}
|
|
|
|
var readBytes = function(bytes) {
|
|
pos += bytes;
|
|
return buffer.slice(pos - bytes, pos);
|
|
}
|
|
|
|
var readVarString = function() {
|
|
var size = readVarInt();
|
|
return readBytes(size);
|
|
}
|
|
|
|
var obj = new coinjs.transaction();
|
|
obj.version = readAsInt(4);
|
|
|
|
if(buffer[pos] == 0x00 && buffer[pos+1] == 0x01){
|
|
// segwit transaction
|
|
witness = true;
|
|
obj.witness = [];
|
|
pos += 2;
|
|
}
|
|
|
|
var ins = readVarInt();
|
|
for (var i = 0; i < ins; i++) {
|
|
obj.ins.push({
|
|
outpoint: {
|
|
hash: Crypto.util.bytesToHex(readBytes(32).reverse()),
|
|
index: readAsInt(4)
|
|
},
|
|
script: coinjs.script(readVarString()),
|
|
sequence: readAsInt(4)
|
|
});
|
|
}
|
|
|
|
var outs = readVarInt();
|
|
for (var i = 0; i < outs; i++) {
|
|
obj.outs.push({
|
|
value: coinjs.bytesToNum(readBytes(8)),
|
|
script: coinjs.script(readVarString())
|
|
});
|
|
}
|
|
|
|
if(witness == true){
|
|
for (i = 0; i < ins; ++i) {
|
|
var count = readVarInt();
|
|
var vector = [];
|
|
for(var y = 0; y < count; y++){
|
|
var slice = readVarInt();
|
|
pos += slice;
|
|
if(!coinjs.isArray(obj.witness[i])){
|
|
obj.witness[i] = [];
|
|
}
|
|
obj.witness[i].push(Crypto.util.bytesToHex(buffer.slice(pos - slice, pos)));
|
|
}
|
|
}
|
|
}
|
|
|
|
obj.lock_time = readAsInt(4);
|
|
return obj;
|
|
}
|
|
|
|
r.size = function(){
|
|
return ((this.serialize()).length/2).toFixed(0);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/* start of signature vertification functions */
|
|
|
|
coinjs.verifySignature = function (hash, sig, pubkey) {
|
|
|
|
function parseSig (sig) {
|
|
var cursor;
|
|
if (sig[0] != 0x30)
|
|
throw new Error("Signature not a valid DERSequence");
|
|
|
|
cursor = 2;
|
|
if (sig[cursor] != 0x02)
|
|
throw new Error("First element in signature must be a DERInteger"); ;
|
|
|
|
var rBa = sig.slice(cursor + 2, cursor + 2 + sig[cursor + 1]);
|
|
|
|
cursor += 2 + sig[cursor + 1];
|
|
if (sig[cursor] != 0x02)
|
|
throw new Error("Second element in signature must be a DERInteger");
|
|
|
|
var sBa = sig.slice(cursor + 2, cursor + 2 + sig[cursor + 1]);
|
|
|
|
cursor += 2 + sig[cursor + 1];
|
|
|
|
var r = BigInteger.fromByteArrayUnsigned(rBa);
|
|
var s = BigInteger.fromByteArrayUnsigned(sBa);
|
|
|
|
return { r: r, s: s };
|
|
}
|
|
|
|
var r, s;
|
|
|
|
if (coinjs.isArray(sig)) {
|
|
var obj = parseSig(sig);
|
|
r = obj.r;
|
|
s = obj.s;
|
|
} else if ("object" === typeof sig && sig.r && sig.s) {
|
|
r = sig.r;
|
|
s = sig.s;
|
|
} else {
|
|
throw "Invalid value for signature";
|
|
}
|
|
|
|
var Q;
|
|
if (coinjs.isArray(pubkey)) {
|
|
var ecparams = EllipticCurve.getSECCurveByName("secp256k1");
|
|
Q = EllipticCurve.PointFp.decodeFrom(ecparams.getCurve(), pubkey);
|
|
} else {
|
|
throw "Invalid format for pubkey value, must be byte array";
|
|
}
|
|
var e = BigInteger.fromByteArrayUnsigned(hash);
|
|
|
|
return coinjs.verifySignatureRaw(e, r, s, Q);
|
|
}
|
|
|
|
coinjs.verifySignatureRaw = function (e, r, s, Q) {
|
|
var ecparams = EllipticCurve.getSECCurveByName("secp256k1");
|
|
var n = ecparams.getN();
|
|
var G = ecparams.getG();
|
|
|
|
if (r.compareTo(BigInteger.ONE) < 0 || r.compareTo(n) >= 0)
|
|
return false;
|
|
|
|
if (s.compareTo(BigInteger.ONE) < 0 || s.compareTo(n) >= 0)
|
|
return false;
|
|
|
|
var c = s.modInverse(n);
|
|
|
|
var u1 = e.multiply(c).mod(n);
|
|
var u2 = r.multiply(c).mod(n);
|
|
|
|
var point = G.multiply(u1).add(Q.multiply(u2));
|
|
|
|
var v = point.getX().toBigInteger().mod(n);
|
|
|
|
return v.equals(r);
|
|
}
|
|
|
|
/* start of privates functions */
|
|
|
|
/* base58 encode function */
|
|
coinjs.base58encode = function(buffer) {
|
|
var alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
|
|
var base = BigInteger.valueOf(58);
|
|
|
|
var bi = BigInteger.fromByteArrayUnsigned(buffer);
|
|
var chars = [];
|
|
|
|
while (bi.compareTo(base) >= 0) {
|
|
var mod = bi.mod(base);
|
|
chars.unshift(alphabet[mod.intValue()]);
|
|
bi = bi.subtract(mod).divide(base);
|
|
}
|
|
|
|
chars.unshift(alphabet[bi.intValue()]);
|
|
for (var i = 0; i < buffer.length; i++) {
|
|
if (buffer[i] == 0x00) {
|
|
chars.unshift(alphabet[0]);
|
|
} else break;
|
|
}
|
|
return chars.join('');
|
|
}
|
|
|
|
/* base58 decode function */
|
|
coinjs.base58decode = function(buffer){
|
|
var alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
|
|
var base = BigInteger.valueOf(58);
|
|
var validRegex = /^[1-9A-HJ-NP-Za-km-z]+$/;
|
|
|
|
var bi = BigInteger.valueOf(0);
|
|
var leadingZerosNum = 0;
|
|
for (var i = buffer.length - 1; i >= 0; i--) {
|
|
var alphaIndex = alphabet.indexOf(buffer[i]);
|
|
if (alphaIndex < 0) {
|
|
throw "Invalid character";
|
|
}
|
|
bi = bi.add(BigInteger.valueOf(alphaIndex).multiply(base.pow(buffer.length - 1 - i)));
|
|
|
|
if (buffer[i] == "1") leadingZerosNum++;
|
|
else leadingZerosNum = 0;
|
|
}
|
|
|
|
var bytes = bi.toByteArrayUnsigned();
|
|
while (leadingZerosNum-- > 0) bytes.unshift(0);
|
|
return bytes;
|
|
}
|
|
|
|
/* raw ajax function to avoid needing bigger frame works like jquery, mootools etc */
|
|
coinjs.ajax = function(u, f, m, a){
|
|
var x = false;
|
|
try{
|
|
x = new ActiveXObject('Msxml2.XMLHTTP')
|
|
} catch(e) {
|
|
try {
|
|
x = new ActiveXObject('Microsoft.XMLHTTP')
|
|
} catch(e) {
|
|
x = new XMLHttpRequest()
|
|
}
|
|
}
|
|
|
|
if(x==false) {
|
|
return false;
|
|
}
|
|
|
|
x.open(m, u, true);
|
|
x.onreadystatechange=function(){
|
|
if((x.readyState==4) && f)
|
|
f(x.responseText);
|
|
};
|
|
|
|
if(m == 'POST'){
|
|
x.setRequestHeader('Content-type','application/x-www-form-urlencoded');
|
|
}
|
|
|
|
x.send(a);
|
|
}
|
|
|
|
/* clone an object */
|
|
coinjs.clone = function(obj) {
|
|
if(obj == null || typeof(obj) != 'object') return obj;
|
|
var temp = new obj.constructor();
|
|
|
|
for(var key in obj) {
|
|
if(obj.hasOwnProperty(key)) {
|
|
temp[key] = coinjs.clone(obj[key]);
|
|
}
|
|
}
|
|
return temp;
|
|
}
|
|
|
|
coinjs.numToBytes = function(num,bytes) {
|
|
if (typeof bytes === "undefined") bytes = 8;
|
|
if (bytes == 0) {
|
|
return [];
|
|
} else if (num == -1){
|
|
return Crypto.util.hexToBytes("ffffffffffffffff");
|
|
} else {
|
|
return [num % 256].concat(coinjs.numToBytes(Math.floor(num / 256),bytes-1));
|
|
}
|
|
}
|
|
|
|
coinjs.numToByteArray = function(num) {
|
|
if (num <= 256) {
|
|
return [num];
|
|
} else {
|
|
return [num % 256].concat(coinjs.numToByteArray(Math.floor(num / 256)));
|
|
}
|
|
}
|
|
|
|
coinjs.numToVarInt = function(num) {
|
|
if (num < 253) {
|
|
return [num];
|
|
} else if (num < 65536) {
|
|
return [253].concat(coinjs.numToBytes(num,2));
|
|
} else if (num < 4294967296) {
|
|
return [254].concat(coinjs.numToBytes(num,4));
|
|
} else {
|
|
return [255].concat(coinjs.numToBytes(num,8));
|
|
}
|
|
}
|
|
|
|
coinjs.bytesToNum = function(bytes) {
|
|
if (bytes.length == 0) return 0;
|
|
else return bytes[0] + 256 * coinjs.bytesToNum(bytes.slice(1));
|
|
}
|
|
|
|
coinjs.uint = function(f, size) {
|
|
if (f.length < size)
|
|
throw new Error("not enough data");
|
|
var n = 0;
|
|
for (var i = 0; i < size; i++) {
|
|
n *= 256;
|
|
n += f[i];
|
|
}
|
|
return n;
|
|
}
|
|
|
|
coinjs.isArray = function(o){
|
|
return Object.prototype.toString.call(o) === '[object Array]';
|
|
}
|
|
|
|
coinjs.countObject = function(obj){
|
|
var count = 0;
|
|
var i;
|
|
for (i in obj) {
|
|
if (obj.hasOwnProperty(i)) {
|
|
count++;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
coinjs.random = function(length) {
|
|
var r = "";
|
|
var l = length || 25;
|
|
var chars = "!$%^&*()_+{}:@~?><|\./;'#][=-abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
|
|
for(x=0;x<l;x++) {
|
|
r += chars.charAt(Math.floor(Math.random() * 62));
|
|
}
|
|
return r;
|
|
}
|
|
|
|
})();
|