const CryptoJS = require('crypto-js');

const {encrypt, decrypt, A} = require('./static/sm4');

class Sm4Service {
    sm4Encrypt(data, key) {
        return encrypt(data, key);
    }

    sm4Decrypt(data, key) {
        return decrypt(data, key);
    }

    getKey() {
        return A();
    }

    getSign(data, key) {
        var HmacSHA256 = CryptoJS.HmacSHA256(data, key)
        return CryptoJS.enc.Hex.stringify(HmacSHA256);
    }

    toHex(e) {
        for (var t = "", n = 0; n < e.length; n++) {
            "" === t ? t = e.charCodeAt(n).toString(16) : t += e.charCodeAt(n).toString(16);
        }
        return t
    }
}


module.exports = Sm4Service