ecdsa: fix indentation
This commit is contained in:
parent
d05d661aea
commit
087ca551f5
1 changed files with 229 additions and 229 deletions
68
src/ecdsa.js
68
src/ecdsa.js
|
@ -4,7 +4,7 @@ var crypto = require('./crypto')
|
||||||
var BigInteger = require('bigi')
|
var BigInteger = require('bigi')
|
||||||
var ECPointFp = require('./ec').ECPointFp
|
var ECPointFp = require('./ec').ECPointFp
|
||||||
|
|
||||||
function deterministicGenerateK(ecparams, hash, D) {
|
function deterministicGenerateK(ecparams, hash, D) {
|
||||||
assert(Buffer.isBuffer(hash), 'Hash must be a Buffer, not ' + hash)
|
assert(Buffer.isBuffer(hash), 'Hash must be a Buffer, not ' + hash)
|
||||||
assert.equal(hash.length, 32, 'Hash must be 256 bit')
|
assert.equal(hash.length, 32, 'Hash must be 256 bit')
|
||||||
assert(D instanceof BigInteger, 'Private key must be a BigInteger')
|
assert(D instanceof BigInteger, 'Private key must be a BigInteger')
|
||||||
|
@ -28,9 +28,9 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
assert(kB.compareTo(ecparams.getN()) < 0, 'Invalid k value')
|
assert(kB.compareTo(ecparams.getN()) < 0, 'Invalid k value')
|
||||||
|
|
||||||
return kB
|
return kB
|
||||||
}
|
}
|
||||||
|
|
||||||
function sign(ecparams, hash, D) {
|
function sign(ecparams, hash, D) {
|
||||||
var k = deterministicGenerateK(ecparams, hash, D)
|
var k = deterministicGenerateK(ecparams, hash, D)
|
||||||
|
|
||||||
var n = ecparams.getN()
|
var n = ecparams.getN()
|
||||||
|
@ -52,15 +52,15 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
}
|
}
|
||||||
|
|
||||||
return {r: r, s: s}
|
return {r: r, s: s}
|
||||||
}
|
}
|
||||||
|
|
||||||
function verify(ecparams, hash, r, s, Q) {
|
function verify(ecparams, hash, r, s, Q) {
|
||||||
var e = BigInteger.fromBuffer(hash)
|
var e = BigInteger.fromBuffer(hash)
|
||||||
|
|
||||||
return verifyRaw(ecparams, e, r, s, Q)
|
return verifyRaw(ecparams, e, r, s, Q)
|
||||||
}
|
}
|
||||||
|
|
||||||
function verifyRaw(ecparams, e, r, s, Q) {
|
function verifyRaw(ecparams, e, r, s, Q) {
|
||||||
var n = ecparams.getN()
|
var n = ecparams.getN()
|
||||||
var G = ecparams.getG()
|
var G = ecparams.getG()
|
||||||
|
|
||||||
|
@ -80,14 +80,14 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
var v = point.getX().toBigInteger().mod(n)
|
var v = point.getX().toBigInteger().mod(n)
|
||||||
|
|
||||||
return v.equals(r)
|
return v.equals(r)
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Serialize a signature into DER format.
|
* Serialize a signature into DER format.
|
||||||
*
|
*
|
||||||
* Takes two BigIntegers representing r and s and returns a byte array.
|
* Takes two BigIntegers representing r and s and returns a byte array.
|
||||||
*/
|
*/
|
||||||
function serializeSig(r, s) {
|
function serializeSig(r, s) {
|
||||||
var rBa = r.toByteArraySigned()
|
var rBa = r.toByteArraySigned()
|
||||||
var sBa = s.toByteArraySigned()
|
var sBa = s.toByteArraySigned()
|
||||||
|
|
||||||
|
@ -104,9 +104,9 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
sequence.unshift(0x30); // SEQUENCE
|
sequence.unshift(0x30); // SEQUENCE
|
||||||
|
|
||||||
return sequence
|
return sequence
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Parses a buffer containing a DER-encoded signature.
|
* Parses a buffer containing a DER-encoded signature.
|
||||||
*
|
*
|
||||||
* This function will return an object of the form:
|
* This function will return an object of the form:
|
||||||
|
@ -116,7 +116,7 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
* s: BigInteger
|
* s: BigInteger
|
||||||
* }
|
* }
|
||||||
*/
|
*/
|
||||||
function parseSig(buffer) {
|
function parseSig(buffer) {
|
||||||
assert.equal(buffer.readUInt8(0), 0x30, 'Not a DER sequence')
|
assert.equal(buffer.readUInt8(0), 0x30, 'Not a DER sequence')
|
||||||
assert.equal(buffer.readUInt8(1), buffer.length - 2, 'Invalid sequence length')
|
assert.equal(buffer.readUInt8(1), buffer.length - 2, 'Invalid sequence length')
|
||||||
|
|
||||||
|
@ -133,9 +133,9 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
r: BigInteger.fromByteArraySigned(rB),
|
r: BigInteger.fromByteArraySigned(rB),
|
||||||
s: BigInteger.fromByteArraySigned(sB)
|
s: BigInteger.fromByteArraySigned(sB)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
function serializeSigCompact(r, s, i, compressed) {
|
function serializeSigCompact(r, s, i, compressed) {
|
||||||
if (compressed) {
|
if (compressed) {
|
||||||
i += 4
|
i += 4
|
||||||
}
|
}
|
||||||
|
@ -148,9 +148,9 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
s.toBuffer(32).copy(buffer, 33)
|
s.toBuffer(32).copy(buffer, 33)
|
||||||
|
|
||||||
return buffer
|
return buffer
|
||||||
}
|
}
|
||||||
|
|
||||||
function parseSigCompact(buffer) {
|
function parseSigCompact(buffer) {
|
||||||
assert.equal(buffer.length, 65, 'Invalid signature length')
|
assert.equal(buffer.length, 65, 'Invalid signature length')
|
||||||
var i = buffer.readUInt8(0) - 27
|
var i = buffer.readUInt8(0) - 27
|
||||||
|
|
||||||
|
@ -170,9 +170,9 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
i: i,
|
i: i,
|
||||||
compressed: compressed
|
compressed: compressed
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Recover a public key from a signature.
|
* Recover a public key from a signature.
|
||||||
*
|
*
|
||||||
* See SEC 1: Elliptic Curve Cryptography, section 4.1.6, "Public
|
* See SEC 1: Elliptic Curve Cryptography, section 4.1.6, "Public
|
||||||
|
@ -180,7 +180,7 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
*
|
*
|
||||||
* http://www.secg.org/download/aid-780/sec1-v2.pdf
|
* http://www.secg.org/download/aid-780/sec1-v2.pdf
|
||||||
*/
|
*/
|
||||||
function recoverPubKey(ecparams, e, r, s, i) {
|
function recoverPubKey(ecparams, e, r, s, i) {
|
||||||
assert.strictEqual(i & 3, i, 'The recovery param is more than two bits')
|
assert.strictEqual(i & 3, i, 'The recovery param is more than two bits')
|
||||||
|
|
||||||
// A set LSB signifies that the y-coordinate is odd
|
// A set LSB signifies that the y-coordinate is odd
|
||||||
|
@ -233,9 +233,9 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
}
|
}
|
||||||
|
|
||||||
return Q
|
return Q
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Calculate pubkey extraction parameter.
|
* Calculate pubkey extraction parameter.
|
||||||
*
|
*
|
||||||
* When extracting a pubkey from a signature, we have to
|
* When extracting a pubkey from a signature, we have to
|
||||||
|
@ -246,7 +246,7 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
* This function simply tries all four cases and returns the value
|
* This function simply tries all four cases and returns the value
|
||||||
* that resulted in a successful pubkey recovery.
|
* that resulted in a successful pubkey recovery.
|
||||||
*/
|
*/
|
||||||
function calcPubKeyRecoveryParam(ecparams, e, r, s, Q) {
|
function calcPubKeyRecoveryParam(ecparams, e, r, s, Q) {
|
||||||
for (var i = 0; i < 4; i++) {
|
for (var i = 0; i < 4; i++) {
|
||||||
var Qprime = recoverPubKey(ecparams, e, r, s, i)
|
var Qprime = recoverPubKey(ecparams, e, r, s, i)
|
||||||
|
|
||||||
|
@ -256,17 +256,17 @@ var ECPointFp = require('./ec').ECPointFp
|
||||||
}
|
}
|
||||||
|
|
||||||
throw new Error('Unable to find valid recovery factor')
|
throw new Error('Unable to find valid recovery factor')
|
||||||
}
|
}
|
||||||
|
|
||||||
module.exports = {
|
module.exports = {
|
||||||
calcPubKeyRecoveryParam: calcPubKeyRecoveryParam,
|
calcPubKeyRecoveryParam: calcPubKeyRecoveryParam,
|
||||||
deterministicGenerateK: deterministicGenerateK,
|
deterministicGenerateK: deterministicGenerateK,
|
||||||
recoverPubKey: recoverPubKey,
|
recoverPubKey: recoverPubKey,
|
||||||
sign: sign,
|
sign: sign,
|
||||||
verify: verify,
|
verify: verify,
|
||||||
verifyRaw: verifyRaw,
|
verifyRaw: verifyRaw,
|
||||||
serializeSig: serializeSig,
|
serializeSig: serializeSig,
|
||||||
parseSig: parseSig,
|
parseSig: parseSig,
|
||||||
serializeSigCompact: serializeSigCompact,
|
serializeSigCompact: serializeSigCompact,
|
||||||
parseSigCompact: parseSigCompact
|
parseSigCompact: parseSigCompact
|
||||||
}
|
}
|
||||||
|
|
Loading…
Add table
Reference in a new issue