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57 lines
1.8 KiB
57 lines
1.8 KiB
#!/usr/bin/env python
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# -*- coding:utf-8 -*-
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#@author: rui.xu
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#这里使用pycrypto库
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#按照方法:easy_install pycrypto
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from Crypto.Cipher import AES
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from binascii import b2a_hex, a2b_hex
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from django.conf import settings
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class prpcrypt():
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def __init__(self,key):
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self.key = key
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self.mode = AES.MODE_CBC
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#加密函数，如果text不足16位就用空格补足为16位，
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#如果大于16当时不是16的倍数，那就补足为16的倍数。
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def encrypt(self,text):
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cryptor = AES.new(self.key,self.mode, b'0000000000000000')
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#这里密钥key 长度必须为16（AES-128）,
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#24（AES-192）,或者32 （AES-256）Bytes 长度
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#目前AES-128 足够目前使用
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# nonce = cryptor.nonce
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length = 32
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count = len(text)
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if count < length:
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add = (length-count)
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#\0 backspace
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text = text + ('\0' * add)
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elif count > length:
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add = (length-(count % length))
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text = text + ('\0' * add)
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print(text)
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self.ciphertext = cryptor.encrypt(text.encode("utf8"))
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#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
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#所以这里统一把加密后的字符串转化为16进制字符串
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return b2a_hex(self.ciphertext)
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#解密后，去掉补足的空格用strip() 去掉
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def decrypt(self,text):
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cryptor = AES.new(self.key,self.mode,b'0000000000000000')
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plain_text = cryptor.decrypt(a2b_hex(text)).decode("utf8")
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return plain_text.rstrip('\0')
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pc = prpcrypt(settings.CRYPT_KEY.encode('utf8')) #初始化密钥
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if __name__ == '__main__':
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# for test
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print(settings.CRYPT_KEY)
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pc = prpcrypt(settings.CRYPT_KEY.encode('utf8')) #初始化密钥
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import sys
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str = sys.argv[1]
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e = pc.encrypt(str) #加密
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print("加密:",e)
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d = pc.decrypt(e) #解密
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print("解密:",d)
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