LBRYCommunity/bitcoinjs-lib
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Add low R signing to TransactionBuilder

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This commit is contained in:
junderw 2019-04-15 17:27:28 +09:00
parent b5577607d4
commit 352e9ef0a3
No known key found for this signature in database
GPG key ID: B256185D3A971908
4 changed files with 43 additions and 2 deletions

11
src/transaction_builder.js
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@ -29,6 +29,7 @@ class TransactionBuilder {
this.__INPUTS = [];
this.__TX = new transaction_1.Transaction();
this.__TX.version = 2;
this.__USE_LOW_R = false;
}
static fromTransaction(transaction, network) {
const txb = new TransactionBuilder(network);
@ -53,6 +54,14 @@ class TransactionBuilder {
});
return txb;
}
setLowR(setting) {
typeforce(typeforce.maybe(typeforce.Boolean), setting);
if (setting === undefined) {
setting = true;
}
this.__USE_LOW_R = setting;
return setting;
}
setLockTime(locktime) {
typeforce(types.UInt32, locktime);
// if any signatures exist, throw
@ -159,7 +168,7 @@ class TransactionBuilder {
if (ourPubKey.length !== 33 && input.hasWitness) {
throw new Error('BIP143 rejects uncompressed public keys in P2WPKH or P2WSH');
}
const signature = keyPair.sign(signatureHash);
const signature = keyPair.sign(signatureHash, this.__USE_LOW_R);
input.signatures[i] = bscript.signature.encode(signature, hashType);
return true;
});