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Текущая директория: /opt/bitgo-express/node_modules/secp256k1/lib
Просмотр файла: der.js
'use strict'
var bip66 = require('bip66')
var EC_PRIVKEY_EXPORT_DER_COMPRESSED = new Buffer([
// begin
0x30, 0x81, 0xd3, 0x02, 0x01, 0x01, 0x04, 0x20,
// private key
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// middle
0xa0, 0x81, 0x85, 0x30, 0x81, 0x82, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48,
0xcE, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xfE, 0xff, 0xff, 0xfc, 0x2f, 0x30, 0x06, 0x04, 0x01, 0x00, 0x04, 0x01, 0x07, 0x04,
0x21, 0x02, 0x79, 0xbE, 0x66, 0x7E, 0xf9, 0xdc, 0xbb, 0xac, 0x55, 0xa0, 0x62, 0x95, 0xcE, 0x87,
0x0b, 0x07, 0x02, 0x9b, 0xfc, 0xdb, 0x2d, 0xcE, 0x28, 0xd9, 0x59, 0xf2, 0x81, 0x5b, 0x16, 0xf8,
0x17, 0x98, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xfE, 0xba, 0xaE, 0xdc, 0xE6, 0xaf, 0x48, 0xa0, 0x3b, 0xbf, 0xd2, 0x5E,
0x8c, 0xd0, 0x36, 0x41, 0x41, 0x02, 0x01, 0x01, 0xa1, 0x24, 0x03, 0x22, 0x00,
// public key
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00
])
var EC_PRIVKEY_EXPORT_DER_UNCOMPRESSED = new Buffer([
// begin
0x30, 0x82, 0x01, 0x13, 0x02, 0x01, 0x01, 0x04, 0x20,
// private key
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// middle
0xa0, 0x81, 0xa5, 0x30, 0x81, 0xa2, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48,
0xcE, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xfE, 0xff, 0xff, 0xfc, 0x2f, 0x30, 0x06, 0x04, 0x01, 0x00, 0x04, 0x01, 0x07, 0x04,
0x41, 0x04, 0x79, 0xbE, 0x66, 0x7E, 0xf9, 0xdc, 0xbb, 0xac, 0x55, 0xa0, 0x62, 0x95, 0xcE, 0x87,
0x0b, 0x07, 0x02, 0x9b, 0xfc, 0xdb, 0x2d, 0xcE, 0x28, 0xd9, 0x59, 0xf2, 0x81, 0x5b, 0x16, 0xf8,
0x17, 0x98, 0x48, 0x3a, 0xda, 0x77, 0x26, 0xa3, 0xc4, 0x65, 0x5d, 0xa4, 0xfb, 0xfc, 0x0E, 0x11,
0x08, 0xa8, 0xfd, 0x17, 0xb4, 0x48, 0xa6, 0x85, 0x54, 0x19, 0x9c, 0x47, 0xd0, 0x8f, 0xfb, 0x10,
0xd4, 0xb8, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xfE, 0xba, 0xaE, 0xdc, 0xE6, 0xaf, 0x48, 0xa0, 0x3b, 0xbf, 0xd2, 0x5E,
0x8c, 0xd0, 0x36, 0x41, 0x41, 0x02, 0x01, 0x01, 0xa1, 0x44, 0x03, 0x42, 0x00,
// public key
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00
])
var ZERO_BUFFER_32 = new Buffer([
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
])
exports.privateKeyExport = function (privateKey, publicKey, compressed) {
var result = new Buffer(compressed ? EC_PRIVKEY_EXPORT_DER_COMPRESSED : EC_PRIVKEY_EXPORT_DER_UNCOMPRESSED)
privateKey.copy(result, compressed ? 8 : 9)
publicKey.copy(result, compressed ? 181 : 214)
return result
}
exports.privateKeyImport = function (privateKey) {
var length = privateKey.length
// sequence header
var index = 0
if (length < index + 1 || privateKey[index] !== 0x30) return
index += 1
// sequence length constructor
if (length < index + 1 || !(privateKey[index] & 0x80)) return
var lenb = privateKey[index] & 0x7f
index += 1
if (lenb < 1 || lenb > 2) return
if (length < index + lenb) return
// sequence length
var len = privateKey[index + lenb - 1] | (lenb > 1 ? privateKey[index + lenb - 2] << 8 : 0)
index += lenb
if (length < index + len) return
// sequence element 0: version number (=1)
if (length < index + 3 ||
privateKey[index] !== 0x02 ||
privateKey[index + 1] !== 0x01 ||
privateKey[index + 2] !== 0x01) {
return
}
index += 3
// sequence element 1: octet string, up to 32 bytes
if (length < index + 2 ||
privateKey[index] !== 0x04 ||
privateKey[index + 1] > 0x20 ||
length < index + 2 + privateKey[index + 1]) {
return
}
return privateKey.slice(index + 2, index + 2 + privateKey[index + 1])
}
exports.signatureExport = function (sigObj) {
var r = Buffer.concat([new Buffer([0]), sigObj.r])
for (var lenR = 33, posR = 0; lenR > 1 && r[posR] === 0x00 && !(r[posR + 1] & 0x80); --lenR, ++posR);
var s = Buffer.concat([new Buffer([0]), sigObj.s])
for (var lenS = 33, posS = 0; lenS > 1 && s[posS] === 0x00 && !(s[posS + 1] & 0x80); --lenS, ++posS);
return bip66.encode(r.slice(posR), s.slice(posS))
}
exports.signatureImport = function (sig) {
var r = new Buffer(ZERO_BUFFER_32)
var s = new Buffer(ZERO_BUFFER_32)
try {
var sigObj = bip66.decode(sig)
if (sigObj.r.length === 33 && sigObj.r[0] === 0x00) sigObj.r = sigObj.r.slice(1)
if (sigObj.r.length > 32) throw new Error('R length is too long')
if (sigObj.s.length === 33 && sigObj.s[0] === 0x00) sigObj.s = sigObj.s.slice(1)
if (sigObj.s.length > 32) throw new Error('S length is too long')
} catch (err) {
return
}
sigObj.r.copy(r, 32 - sigObj.r.length)
sigObj.s.copy(s, 32 - sigObj.s.length)
return { r: r, s: s }
}
exports.signatureImportLax = function (sig) {
var r = new Buffer(ZERO_BUFFER_32)
var s = new Buffer(ZERO_BUFFER_32)
var length = sig.length
var index = 0
// sequence tag byte
if (sig[index++] !== 0x30) return
// sequence length byte
var lenbyte = sig[index++]
if (lenbyte & 0x80) {
index += lenbyte - 0x80
if (index > length) return
}
// sequence tag byte for r
if (sig[index++] !== 0x02) return
// length for r
var rlen = sig[index++]
if (rlen & 0x80) {
lenbyte = rlen - 0x80
if (index + lenbyte > length) return
for (; lenbyte > 0 && sig[index] === 0x00; index += 1, lenbyte -= 1);
for (rlen = 0; lenbyte > 0; index += 1, lenbyte -= 1) rlen = (rlen << 8) + sig[index]
}
if (rlen > length - index) return
var rindex = index
index += rlen
// sequence tag byte for s
if (sig[index++] !== 0x02) return
// length for s
var slen = sig[index++]
if (slen & 0x80) {
lenbyte = slen - 0x80
if (index + lenbyte > length) return
for (; lenbyte > 0 && sig[index] === 0x00; index += 1, lenbyte -= 1);
for (slen = 0; lenbyte > 0; index += 1, lenbyte -= 1) slen = (slen << 8) + sig[index]
}
if (slen > length - index) return
var sindex = index
index += slen
// ignore leading zeros in r
for (; rlen > 0 && sig[rindex] === 0x00; rlen -= 1, rindex += 1);
// copy r value
if (rlen > 32) return
var rvalue = sig.slice(rindex, rindex + rlen)
rvalue.copy(r, 32 - rvalue.length)
// ignore leading zeros in s
for (; slen > 0 && sig[sindex] === 0x00; slen -= 1, sindex += 1);
// copy s value
if (slen > 32) return
var svalue = sig.slice(sindex, sindex + slen)
svalue.copy(s, 32 - svalue.length)
return { r: r, s: s }
}
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