aes之ecb模式的加密解密

aes之ecb模式的加密解密

 

from Crypto.Cipher import AES
import base64

BLOCK_SIZE = 16  # Bytes
pad = lambda s: s + (BLOCK_SIZE - len(s.encode()) % BLOCK_SIZE) * chr(BLOCK_SIZE - len(s.encode()) % BLOCK_SIZE)
unpad = lambda s: s[:-ord(s[len(s) - 1:])]


def aesEncrypt(key, data):
    '''
    AES的ECB模式加密方法
    :param key: 密钥
    :param data:被加密字符串（明文）
    :return:密文
    '''
    key = key.encode('utf8')
    # 字符串补位
    data = pad(str(data))
    cipher = AES.new(key, AES.MODE_ECB)
    # 加密后得到的是bytes类型的数据，使用Base64进行编码,返回byte字符串
    data_bytes = bytes(data, encoding="utf-8")
    result = cipher.encrypt(data_bytes)
    encodestrs = base64.b64encode(result)
    enctext = encodestrs.decode('utf8')
    return enctext


def aesDecrypt(key, data):
    '''

    :param key: 密钥
    :param data: 加密后的数据（密文）
    :return:明文
    '''
    key = key.encode('utf8')
    data = base64.b64decode(data)
    cipher = AES.new(key, AES.MODE_ECB)
    # 去补位
    text_decrypted = unpad(cipher.decrypt(data))
    text_decrypted = text_decrypted.decode('utf8')
    return text_decrypted


if __name__ == '__main__':
    key = '5c44c819appsapi0'

    # data = 'herish acorn'
    data = '吴森'

    ecdata = aesEncrypt(key, data)
    aesDecrypt(key, ecdata)
    res_data = aesDecrypt(key, ecdata)
    s = f"""
        key:{key}
        data:{data}
        ecdata:{ecdata}
        res_data:{res_data}
    """
    print(s)