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ECSignature: use types.tuple for arguments

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This commit is contained in:
Daniel Cousens 2015-08-12 13:17:24 +10:00
parent 33a9dc4cce
commit 92d16142d1
1 changed files with 2 additions and 3 deletions
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5
src/ecsignature.js
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@ -4,8 +4,7 @@ var types = require('./types')
var BigInteger = require('bigi') var BigInteger = require('bigi')
function ECSignature (r, s) { function ECSignature (r, s) {
typeforce(types.BigInt, r) typeforce(types.tuple(types.BigInt, types.BigInt), arguments)
typeforce(types.BigInt, s)
this.r = r this.r = r
this.s = s this.s = s
@ -40,7 +39,7 @@ ECSignature.fromDER = function (buffer) {
if (buffer[1] !== buffer.length - 2) throw new Error('Invalid sequence length') if (buffer[1] !== buffer.length - 2) throw new Error('Invalid sequence length')
if (buffer[2] !== 0x02) throw new Error('Expected a DER integer') if (buffer[2] !== 0x02) throw new Error('Expected a DER integer')
var lenR = buffer.readUInt8(3) var lenR = buffer[3]
if (lenR === 0) throw new Error('R length is zero') if (lenR === 0) throw new Error('R length is zero')
if (5 + lenR >= buffer.length) throw new Error('Invalid DER encoding') if (5 + lenR >= buffer.length) throw new Error('Invalid DER encoding')
if (buffer[4 + lenR] !== 0x02) throw new Error('Expected a DER integer (2)') if (buffer[4 + lenR] !== 0x02) throw new Error('Expected a DER integer (2)')