javascript des-ecb加密和解密

StringUtil.js

/**
 * 采用des-ecb的方式进行加密，
 * @param text
 */
    function encryptText(text){
        var settings = {
            des_ecb_key:"01234567",
            des_ecb_iv:null
        };
        var key = settings.des_ecb_key;
        var iv = new Buffer(settings.des_ecb_iv ? settings.des_ecb_iv : 0)
        var plaintext = text;
        var alg = "des-ecb";
        var autoPad = true;
        var crypto = require('crypto');

        //encrypt
        var cipher = crypto.createCipheriv(alg, key, iv);
        cipher.setAutoPadding(autoPad)  //default true
        var ciph = cipher.update(plaintext, 'utf8', 'hex');
        ciph += cipher.final('hex');
    
        return ciph;
    }


/**
 * 采用des-ecb的方式进行解密
 * @param text
 */
    function decryptText(text) {
        try {
            var settings = {
              des_ecb_key:"01234567",
              des_ecb_iv:null
            };
            var key = settings.des_ecb_key;
            var iv = new Buffer(settings.des_ecb_iv ? settings.des_ecb_iv : 0)
            var alg = "des-ecb";
            var crypto = require('crypto');
    
            var decipher = crypto.createDecipheriv(alg, key, iv);
            var txt = decipher.update(text, 'hex', 'utf8');
            txt += decipher.final('utf8');
            return txt;
        } catch (e) {
            return null;
        }
    }