@proton/ccxt
Version:
A JavaScript / TypeScript / Python / C# / PHP cryptocurrency trading library with support for 130+ exchanges
173 lines (166 loc) • 6.49 kB
JavaScript
;
var _commonjsHelpers = require('./_commonjsHelpers.js');
var require$$1 = require('buffer');
require('constants');
function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
var require$$1__default = /*#__PURE__*/_interopDefaultLegacy(require$$1);
const commonjsRegister = _commonjsHelpers.commonjsRegister;
commonjsRegister("/$$rollup_base$$/js/src/static_dependencies/node-rsa/schemes/pkcs1.cjs", function (module, exports) {
/**
* PKCS1 padding and signature scheme
*/
var BigInteger = _commonjsHelpers.commonjsRequire("../libs/jsbn.cjs", "/$$rollup_base$$/js/src/static_dependencies/node-rsa/schemes");
var CryptoJS = _commonjsHelpers.commonjsRequire("../../crypto-js/crypto-js.cjs", "/$$rollup_base$$/js/src/static_dependencies/node-rsa/schemes");
var constants = { RSA_NO_PADDING: 3 };
var Buffer = require$$1__default["default"].Buffer;
var SIGN_INFO_HEAD = {
md2: Buffer.from('3020300c06082a864886f70d020205000410', 'hex'),
md5: Buffer.from('3020300c06082a864886f70d020505000410', 'hex'),
sha1: Buffer.from('3021300906052b0e03021a05000414', 'hex'),
sha224: Buffer.from('302d300d06096086480165030402040500041c', 'hex'),
sha256: Buffer.from('3031300d060960864801650304020105000420', 'hex'),
sha384: Buffer.from('3041300d060960864801650304020205000430', 'hex'),
sha512: Buffer.from('3051300d060960864801650304020305000440', 'hex'),
ripemd160: Buffer.from('3021300906052b2403020105000414', 'hex'),
rmd160: Buffer.from('3021300906052b2403020105000414', 'hex')
};
var SIGN_ALG_TO_HASH_ALIASES = {
'ripemd160': 'rmd160'
};
var DEFAULT_HASH_FUNCTION = 'sha256';
module.exports = {
isEncryption: true,
isSignature: true
};
module.exports.makeScheme = function (key, options) {
function Scheme(key, options) {
this.key = key;
this.options = options;
}
Scheme.prototype.maxMessageLength = function () {
if (this.options.encryptionSchemeOptions && this.options.encryptionSchemeOptions.padding == constants.RSA_NO_PADDING) {
return this.key.encryptedDataLength;
}
return this.key.encryptedDataLength - 11;
};
/**
* Unpad input Buffer and, if valid, return the Buffer object
* alg: PKCS#1 (type 2, random)
* @param buffer
* @returns {Buffer}
*/
Scheme.prototype.encUnPad = function (buffer, options) {
options = options || {};
var i = 0;
if (this.options.encryptionSchemeOptions && this.options.encryptionSchemeOptions.padding == constants.RSA_NO_PADDING) {
//RSA_NO_PADDING treated like JAVA left pad with zero character
var unPad;
if (typeof buffer.lastIndexOf == "function") { //patch for old node version
unPad = buffer.slice(buffer.lastIndexOf('\0') + 1, buffer.length);
}
else {
unPad = buffer.slice(String.prototype.lastIndexOf.call(buffer, '\0') + 1, buffer.length);
}
return unPad;
}
if (buffer.length < 4) {
return null;
}
/* Type 1: zeros padding for private key decrypt */
if (options.type === 1) {
if (buffer[0] !== 0 && buffer[1] !== 1) {
return null;
}
i = 3;
while (buffer[i] !== 0) {
if (buffer[i] != 0xFF || ++i >= buffer.length) {
return null;
}
}
}
else {
/* random padding for public key decrypt */
if (buffer[0] !== 0 && buffer[1] !== 2) {
return null;
}
i = 3;
while (buffer[i] !== 0) {
if (++i >= buffer.length) {
return null;
}
}
}
return buffer.slice(i + 1, buffer.length);
};
Scheme.prototype.sign = function (buffer) {
var hashAlgorithm = this.options.signingSchemeOptions.hash || DEFAULT_HASH_FUNCTION;
if (this.options.environment === 'browser') {
hashAlgorithm = SIGN_ALG_TO_HASH_ALIASES[hashAlgorithm] || hashAlgorithm;
var hasher = CryptoJS[hashAlgorithm.toUpperCase()](buffer.toString());
var asBuffer = wordArrayToBuffer(hasher);
var paddedHash = this.pkcs1pad(asBuffer, hashAlgorithm);
var res = this.key.$doPrivate(new BigInteger(paddedHash)).toBuffer(this.key.encryptedDataLength);
return res;
}
else {
throw new Error('CCXT only supports browser mode :P');
}
};
/**
* PKCS#1 pad input buffer to max data length
* @param hashBuf
* @param hashAlgorithm
* @returns {*}
*/
Scheme.prototype.pkcs1pad = function (hashBuf, hashAlgorithm) {
var digest = SIGN_INFO_HEAD[hashAlgorithm];
if (!digest) {
throw Error('Unsupported hash algorithm');
}
var data = Buffer.concat([digest, hashBuf]);
if (data.length + 10 > this.key.encryptedDataLength) {
throw Error('Key is too short for signing algorithm (' + hashAlgorithm + ')');
}
var filled = Buffer.alloc(this.key.encryptedDataLength - data.length - 1);
filled.fill(0xff, 0, filled.length - 1);
filled[0] = 1;
filled[filled.length - 1] = 0;
var res = Buffer.concat([filled, data]);
return res;
};
return new Scheme(key, options);
};
// used to convert `CryptoJS` wordArrays into `crypto` hex buffers
function wordToByteArray(word, length) {
var ba = [], xFF = 0xFF;
if (length > 0)
ba.push(word >>> 24);
if (length > 1)
ba.push((word >>> 16) & xFF);
if (length > 2)
ba.push((word >>> 8) & xFF);
if (length > 3)
ba.push(word & xFF);
return ba;
}
function wordArrayToBuffer(wordArray) {
let length = undefined;
if (wordArray.hasOwnProperty("sigBytes") && wordArray.hasOwnProperty("words")) {
length = wordArray.sigBytes;
wordArray = wordArray.words;
}
else {
throw Error('Argument not a wordArray');
}
const result = [];
let bytes = [];
let i = 0;
while (length > 0) {
bytes = wordToByteArray(wordArray[i], Math.min(4, length));
length -= bytes.length;
result.push(bytes);
i++;
}
return new Buffer.from([].concat.apply([], result), 'hex');
}
});