from Crypto.Cipher import AES
from binascii import b2a_hex, a2b_hex
class AESCrypto():
def __init__(self,key):
self.key = key
self.mode = AES.MODE_CBC
#加密函数,如果text不足16位就用空格补足为16位,
#如果大于16当时不是16的倍数,那就补足为16的倍数。
def encrypt(self,text):
cryptor = AES.new(self.key,self.mode,b'0000000000000000')
#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)
text = text + ('\0' * add)
elif count > length:
add = (length-(count % length))
text = text + ('\0' * add)
self.ciphertext = cryptor.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 b2a_hex(self.ciphertext)
#解密后,去掉补足的空格用strip() 去掉
def decrypt(self,text):
cryptor = AES.new(self.key,self.mode,b'0000000000000000')
plain_text = cryptor.decrypt(a2b_hex(text))
return plain_text.rstrip('\0')
if __name__ == '__main__':
pc = AESCrypto('123456789') #初始化密钥
e = pc.encrypt('MhpPUwqNAsLehj1VRQmo8eLiQumNPAif7YZAuSW6')
print "e=",e
d = pc.decrypt(e) #解密
print "加密:",e
print "解密:",d
这是一个用 Python 实现的AES加密解密方法,我现在需要使用Ruby来实现其中的解密方法,但是那个 b'0000000000000000'不知道是什么东西,写了一部分如下:
require 'openssl'
require 'base64'
class Test
token_encry = "c8fd20f158163fcfe2b41ef546ec7b4af0caeb65fbfd1128090335f6640effa819aae009a036acf020162613f08fcb01"
decipher = OpenSSL::Cipher.new("AES-256-CBC")
decipher.decrypt
decipher.key = "123456789"
decipher.padding = 0
re = [token_encry].pack('H*')
puts "re====#{re}"
result = decipher.update([token_encry].pack('H*')) << decipher.final
puts result
return result
end
查了很多资料,也找不到怎么能得出一样的结论。?_?