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scripts: add error for >n signatures with multisig

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This commit is contained in:
Daniel Cousens 2014-08-30 13:02:02 +10:00
parent 8d5ef2dd06
commit e1479b6fa5
2 changed files with 20 additions and 3 deletions

10
src/scripts.js
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@ -238,9 +238,13 @@ function multisigInput(signatures, scriptPubKey) {
if (scriptPubKey) {
assert(isMultisigOutput.call(scriptPubKey))
var m = scriptPubKey.chunks[0]
var k = m - (opcodes.OP_1 - 1)
assert(k <= signatures.length, 'Not enough signatures provided')
var mOp = scriptPubKey.chunks[0]
var nOp = scriptPubKey.chunks[scriptPubKey.chunks.length - 2]
var m = mOp - (opcodes.OP_1 - 1)
var n = nOp - (opcodes.OP_1 - 1)
assert(signatures.length >= m, 'Not enough signatures provided')
assert(signatures.length <= n, 'Too many signatures provided')
}
return Script.fromChunks([].concat(opcodes.OP_0, signatures))