Method encryptData_CBC

src/com/autoDecoder/util/SM4Utils.java:87–111

(String plainText)

    }

    public String encryptData_CBC(String plainText) {
        try {
            SM4_Context ctx = new SM4_Context();
            ctx.isPadding = true;
            ctx.mode = SM4.SM4_ENCRYPT;

            byte[] keyBytes;
            byte[] ivBytes;
            if (hexString) {
                keyBytes = Util.hexStringToBytes(secretKey);
                ivBytes = Util.hexStringToBytes(iv);
            } else {
                keyBytes = secretKey.getBytes();
                ivBytes = iv.getBytes();
            }

            SM4 sm4 = new SM4();
            sm4.sm4_setkey_enc(ctx, keyBytes);
            byte[] encrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, plainText.getBytes("UTF-8"));
            return Util.byteToHex(encrypted);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public String decryptData_CBC(String cipherText) {
        try {