AES加解密的程序写的有个问题，没有自动对16位对齐

[pengtao007]

AES加解密的程序写的有个问题，没有自动对16位对齐,下面是16位对齐，支持中英文版的python程序： `#coding:utf-8 ''' pthon3 aes1.py AES Key String: 0102030405060708 AES IV String: 0102030405060708 AES Mode: AES/CBC/PKCS7PADDING ''' import base64 from binascii import b2a_hex,a2b_hex from Crypto.Cipher import AES #注：python3 安装 Crypto 是 pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple pycryptodome

def pkcs7padding(text): """ 明文使用PKCS7填充 最终调用AES加密方法时，传入的是一个byte数组，要求是16的整数倍，因此需要对明文进行处理 :param text: 待加密内容(明文) :return: """ bs = AES.block_size # 16 length = len(text) bytes_length = len(bytes(text,encoding='utf-8')) # tips：utf-8编码时，英文占1个byte，而中文占3个byte padding_size = length if(bytes_length == length) else bytes_length padding = bs - padding_size % bs # tips：chr(padding)看与其它语言的约定，有的会使用'\0' padding_text = chr(padding) * padding return text + padding_text

def pkcs7unpadding(text): """ 处理使用PKCS7填充过的数据 :param text: 解密后的字符串 :return: """ try: length = len(text) unpadding = ord(text[length-1]) return text[0:length-unpadding] except Exception as e: pass

def aes_encode(key,iv,content): """ AES加密 key,iv使用同一个 模式cbc 填充pkcs7 :param key: 密钥 :param content: 加密内容 :return: """ key_bytes = bytes(key,encoding='utf-8') iv_bytes = bytes(iv,encoding='utf-8') iv = iv_bytes cipher = AES.new(key_bytes,AES.MODE_CBC,iv) # 处理明文 content_padding = pkcs7padding(content) # 加密 aes_encode_bytes = cipher.encrypt(bytes(content_padding,encoding='utf-8')) # 重新编码 result = str(base64.b64encode(aes_encode_bytes),encoding='utf-8') #result=str(bytes.hex(aes_encode_bytes)) return result

def aes_decode(key,iv,content): """ AES解密 key,iv使用同一个 模式cbc 去填充pkcs7 :param key: :param content: :return: """ try: key_bytes = bytes(key,encoding='utf-8') #iv_bytes = bytes(iv,encoding='utf-8') #iv = iv_bytes cipher = AES.new(key_bytes,AES.MODE_CBC,iv) # base64解码 aes_encode_bytes = base64.b64decode(content) #aes_encode_bytes=a2b_hex(content) # 解密 aes_decode_bytes = cipher.decrypt(aes_encode_bytes) # 重新编码 result = str(aes_decode_bytes,encoding='utf-8') # 去除填充内容 result = pkcs7unpadding(result) return result except Exception as e: print(e) pass

key = '{g;$9~l[de]}wSZ9' key_iv = '$Sz>&*lZFsZ?:P#9'

对中英文加密

data = 'test' mi="PKVhuJXjpYaanmqbOZIUGw==" #mi = aes_encode(key,key_iv,data) #imi=mi.upper() print("[*]加密结果:\n"+mi)

解密

print("[*]解密结果:\n"+aes_decode(key,key_iv,mi))

`