Python AES-128 CBC加解密方法(兼容其它語言)

from Crypto.Cipher import AES import base64 class PrpCrypt(object): def __init__(self, key): self.key = bytes.fromhex(key) self.mode = AES.MODE_CBC
 # 這裏使用的16個1做爲iv,亦可動態生成可變iv
 self.iv = '1111111111111111'.encode('utf-8') def encrypt(self, text): text = text.encode('utf-8') cryptor = AES.new(self.key, self.mode, self.iv) # 這裏密鑰key 長度必須爲16（AES-128）,
        # 24（AES-192）,或者32 （AES-256）Bytes 長度
        # 目前AES-128 足夠目前使用
        length = 16 count = len(text) if count < length: add = (length - count) # \0 backspace
            # text = text + ('\0' * add)
            text = text + ('\01' * add).encode('utf-8') elif count > length: add = (length - (count % length)) # text = text + ('\0' * add)
            text = text + ('\01' * add).encode('utf-8') a=cryptor.encrypt(text) self.ciphertext = self.iv+a # 由於AES加密時候獲得的字符串不必定是ascii字符集的，輸出到終端或者保存時候可能存在問題
        # 因此這裏統一把加密後的字符串轉化爲base64
        return str(base64.b64encode(self.ciphertext),'utf-8') def decrypt(self, text): iv = base64.b64decode(text)[0:16] encry_text = base64.b64decode(text)[16:] cryptor = AES.new(self.key, self.mode, iv) plain_text = cryptor.decrypt(encry_text) # return plain_text.rstrip('\0')
        return str(plain_text, 'utf-8').rstrip('\01')