在解密文件时,我们需要读取加密文件,并使用相同的密钥和AES CBC模式进行解密,然后去除填充。以下是解密文件的代码示例: python def decrypt_file(input_filename, output_filename, key): with open(input_filename, 'rb') as infile, open(output_filename, 'wb') as outfile: iv = infile.read(16) cipher...
text_decrypted=cipher.decrypt(encodebytes)#因为CBC模式AES加密需要满足加密数据长度是密钥长度的整数倍,所以数据后面可能有不需要的后来添加的数据,所以我们就去掉#因为添加后缀的时候按照“16 - len(s)%16”,那么后面那个字符的码值也就是原串原来长度差了多少是16整数倍unpad =lambdas: s[0:-s[-1]] text_...
cipher_text = cryptos.encrypt(text) # 因为AES加密后的字符串不一定是ascii字符集的,输出保存可能存在问题,所以这里转为16进制字符串 returnb2a_hex(cipher_text) # 解密后,去掉补足的空格用strip() 去掉 defdecrypt(text, key, iv): mode = AES.MODE_CBC cryptos = AES.new(key=key.encode('utf-8')...
defdecrypt(self,text):cryptor=AES.new(self.key,self.mode,b'0123456789ABCDEF')plain_text=cryptor.decrypt(a2b_hex(text))#returnplain_text.rstrip('\0')returnbytes.decode(plain_text).rstrip('\0')if__name__=='__main__':pc=PrpCrypt('jo8j9wGw%6HbxfFn')# 初始化密钥 key e=pc.encrypt(...
decode('utf-8') # 将加密结果转为base64编码输出 def decrypt_by_aes(text: str, key: str): """ 解密函数 :param text: 加密字符串 :param key: 密钥:return: 解密结果 """ key = key.encode('utf-8') text = text.encode('utf-8') text = base64.b64decode(text) # 先使用base64解码 ...
AES CBC Decryption Process 4. 关系图 以下是解密过程中涉及的实体及其关系: KEYCIPHERIVDECRYPTORENCRYPTED_DATAPADDED_PLAINTEXTUNPADDERPLAINTEXTused forused forhasdecryptsdecrypts tounpadded byproduces 5. 结语 通过本文的介绍和示例代码,你应该已经对如何在 Python 中实现 AES CBC 解密及填充处理有了基本的了...
def aes_ECB_Decrypt(data,key): # ECB模式的解密函数,data为密文,key为16字节密钥 key = key.encode('utf-8') aes = AES.new(key=key,mode=AES.MODE_ECB) # 创建解密对象 #decrypt AES解密 B64decode为base64 转码 result = aes.decrypt(base64.b64decode(data)) ...
new(key.encode('utf8'), AES.MODE_CBC, iv.encode('utf8')) text_decrypted = cipher.decrypt(encodebytes) # 去补位 unpad = lambda s: s[0:-s[-1]] text_decrypted = unpad(text_decrypted) text_decrypted = text_decrypted.decode('utf8') return text_decrypted if __name__ == '__...
pkcs7_padding(password) cipher = _AES.new(key, _AES.MODE_CBC, self.IV) return base64.b64encode(cipher.encrypt(padded_data)).decode() def aes_decrypt(self, content: str): """ aes解密 :param content: :return: """ key = self.generateKey() cipher = _AES.new(key, _AES.MODE_CBC,...
(key, t, iv):#初始化加密器aes =AES.new(add_to_16(key), AES.MODE_CBC, add_to_16(iv))#优先逆向解密 base64 成 bytesbase64_decrypted = base64.decodebytes(t.encode(encoding='utf-8'))#执行解密密并转码返回strdecrypted_text = str(aes.decrypt(base64_decrypted), encoding='utf-8')....