前端加解密，ECB，CBC

前端数据加密解密

使用crypto-js

加解密代码如下

    encryptECB(word, EK) {
        if (word === null) {
            return word;
        }
        let key = CryptoJS.enc.Utf8.parse(EK);
        let srcs = CryptoJS.enc.Utf8.parse(word);
        let encrypted = CryptoJS.AES.encrypt(srcs, key, {
            mode: CryptoJS.mode.ECB,
            padding: CryptoJS.pad.Pkcs7
        });
        return encrypted.ciphertext.toString().toUpperCase();
    },
    /** ECB解密 */
    decryptECB(word, EK) {
        if (word === null) {
            return word;
        }
        let key = CryptoJS.enc.Utf8.parse(EK);
        let encryptedHexStr = CryptoJS.enc.Hex.parse(word);
        let srcs = CryptoJS.enc.Base64.stringify(encryptedHexStr);
        let decrypt = CryptoJS.AES.decrypt(srcs, key, {
            mode: CryptoJS.mode.ECB,
            padding: CryptoJS.pad.Pkcs7
        });
        let decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
        return decryptedStr.toString();
    },
    /** CBC加密 */
    encryptCBC(word, EK) {
        if (word === null) {
            return word;
        }
        let iv = CryptoJS.enc.Utf8.parse(EK);
        let key = CryptoJS.enc.Utf8.parse(EK);
        let srcs = CryptoJS.enc.Utf8.parse(word);
        let encrypted = CryptoJS.AES.encrypt(srcs, key, {
            iv: iv,
            mode: CryptoJS.mode.CBC,
            padding: CryptoJS.pad.ZeroPadding
        });
        return encrypted.toString();
    },
    /** CBC解密 */
    decryptCBC(word, EK) {
        if (word === null) {
            return word;
        }
        let iv = CryptoJS.enc.Utf8.parse(EK);
        let key = CryptoJS.enc.Utf8.parse(EK);
        let encryptedHexStr = CryptoJS.enc.Hex.parse(word);
        let srcs = CryptoJS.enc.Base64.stringify(encryptedHexStr);
        let decrypt = CryptoJS.AES.decrypt(srcs, key, {
            iv: iv,
            mode: CryptoJS.mode.CBC,
            padding: CryptoJS.pad.ZeroPadding
        });
        let decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
        return decryptedStr.toString();
    }

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