etkframework/crypto_lib/wifCrypto.js

First test release of Etk over colored coins SDK

/**
 * Etk Helper library.
 * Utility functions to decode Base58 pvt key string to hex string 
 *      and vice versa.
 * 
 * Copyright (C) 2015  Akul Mathur

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
    Parts of the software are provided under separate licenses, as follows:
    "colu-nodejs" SDK is under the MIT License 
    "pbkdf2-sha256" is under the BSD License 
    "bip38" is under the MIT License 
    "scryptsy" is under the MIT License 
    "coinstring" is under the MIT License
    
 * Core Developer(s): @codecakesakurnya Akul Mathur
 * Maintainer(s):
 *              @codecakes Akul Mathur
 * Description:
 *      Utility functions to decode Base58 pvt key string to hex string 
 *      and vice versa.
 *  
 */
"use strict";

const 
    cs = require("coinstring"),
    pvtKeyWIFDecode = function pvtKeyWIFDecode(pvtKeyBase58, version) {
        //Decode the pvtKeyBase58 address or wallet import format into a Buffer of bytes to Hex String.
        return cs.decode(pvtKeyBase58, version || 0x80).toString('hex');
    },
    pvtKeyWIFEncode = function pvtKeyWIFEncode(privateKeyHex, version) {
        //Encode Private KeyHex to Buffered to BIP38 Base58 check enoded Bitcoin Wallet Import Format
        return cs.encode(new Buffer(privateKeyHex, 'hex'), version || 0x80);
    };

exports.pvtKeyWIFDecode = pvtKeyWIFDecode;
exports.pvtKeyWIFEncode = pvtKeyWIFEncode;