aes-crypto.js

/**
 *  加密解密
 */

var crypto = require('crypto');

var _p = {};

/**
 * 加密
 * @method encryption
 * @param  type 加密方法 des-ecb/aes-128-ecb
 * @param  data 加密的数据
 * @param  key  加密的 key
 * @return 加密后的数据
 */
_p.encryption = function(type, data, key) {
    var iv = '';
    var clearEncoding = 'utf8';
    var cipherEncoding = 'base64';
    var cipherChunks = [];
    var cipher = crypto.createCipheriv(type, key,  iv);
    cipher.setAutoPadding(true);

    cipherChunks.push(cipher.update(data, clearEncoding, cipherEncoding));
    cipherChunks.push(cipher.final(cipherEncoding));

    return cipherChunks.join('');
}

_p.decryption = function(type, data, key) {
    var iv = '';
    var clearEncoding = 'utf8';
    var cipherEncoding = 'base64';
    var cipherChunks = [];
    var decipher = crypto.createDecipheriv(type, key, iv);
    decipher.setAutoPadding(true);

    cipherChunks.push(decipher.update(data, cipherEncoding, clearEncoding));
    cipherChunks.push(decipher.final(clearEncoding));

    return cipherChunks.join('');
}


module.exports = _p;