Crypto 加密解密

import binascii
from Crypto.Cipher import AES
#秘钥,此处需要将字符串转为字节
from utils import config
from utils.env_operation import conf_parse
 
key = b'abcdefgh'
#加密内容需要长达16位字符，所以进行空格拼接
class crypt_util():
    def __init__(self):
        self.token = config.get_env('crypt_token').encode('utf-8')
        self.aes = AES.new(self.token, AES.MODE_CBC,b'')
 
    def encrypt(self,text):
        text = text.encode('utf-8')
        # 这里密钥key 长度必须为16（AES-128）,
        # 24（AES-192）,或者32 （AES-256）Bytes 长度
        # 目前AES-128 足够目前使用
        length = 16
        count = len(text)
        if count < length:
            add = (length - count)
            # \0 backspace
            # text = text + ('\0' * add)
            text = text + ('\0' * add).encode('utf-8')
        elif count > length:
            add = (length - (count % length))
            # text = text + ('\0' * add)
            text = text + ('\0' * add).encode('utf-8')
        self.ciphertext = self.aes.encrypt(text)
        # 因为AES加密时候得到的字符串不一定是ascii字符集的，输出到终端或者保存时候可能存在问题
        # 所以这里统一把加密后的字符串转化为16进制字符串
        return binascii.b2a_hex(self.ciphertext)
 
    def decrypt(self,str):
        plain_text = self.aes.decrypt(binascii.a2b_hex(str))
        # return plain_text.rstrip('\0')
        print(bytes.decode(plain_text).rstrip('\0'))
        return bytes.decode(plain_text).rstrip('\0')
 
        # # a = b'8fea87a50aa6203cfcfd508fa30f8fa0d8cd103e3a37ef057f7763eff7742b51'
        # # 用aes对象进行解密，将字节类型转为str类型，错误编码忽略不计
        # de = self.aes.decrypt(binascii.a2b_hex(str)), encoding='utf-8', errors="ignore")
        # # 获取str从0开始到文本内容的字符串长度。
        # print(de)
        # return de
 
    def pad(text):
        while len(text) % 16 != 0:
            text += b' '
        return text
    #加密秘钥需要长达16位字符，所以进行空格拼接
    def pad_key(key):
        while len(key) % 16 != 0:
            key += b' '
        return key
if __name__ == '__main__':
    conparse = conf_parse()
    conparse.confparse(vars)
    crypt=crypt_util()
    # print(crypt.encrypt("12345678"))
    crypt.decrypt('a56586aa860f83d6ba9a826b4c6df564')