LBRYCommunity/bitcoinjs-lib
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ECSignature: account for SIGHASH being ignored

Browse source
This commit is contained in:
Daniel Cousens 2015-07-07 17:44:44 +10:00
parent 92f9342c69
commit e8fd3887da
2 changed files with 12 additions and 2 deletions

6
src/ecsignature.js
View file

@ -35,9 +35,11 @@ ECSignature.parseCompact = function (buffer) {
// Strict DER - https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki
// NOTE: SIGHASH byte ignored
ECSignature.fromDER = function (buffer) {
// Format: 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S]
// Minimum and maximum size constraints.
if (buffer.length < 9) throw new Error('Invalid sequence length')
if (buffer.length > 73) throw new Error('Invalid sequence length')
if (buffer.length < 8) throw new Error('DER sequence too short')
if (buffer.length > 72) throw new Error('DER sequence too long')
// A signature is of type 0x30 (compound).
if (buffer[0] !== 0x30) throw new Error('Not a DER sequence')