def IsValid(self, ciphernum):
plainnum = rsa.Decrypt(self._key, ciphernum)
plainbytes = IntegerToBytes(plainnum)
# Pads the message in front, if necessary. This is because if the number
# had a leading zero, it would not be translated into bytes.
while len(plainbytes) < KEY_BYTESIZE:
plainbytes = b'\x00' + plainbytes
return plainbytes[0] == 0 and plainbytes[1] == 2
def RSASign(message, privKey):
"""Compute a proper signature for the message, with the private key."""
n, d = privKey
encodedMessage = PKCS1_v1_5_ENCODE(message)
# Occasionally the string encoded in s turns out to be 257 bytes, instead
# of the 256 we expect, and this throws an error. I suspect the key pair
# generation is a bit wonky...
m = BytesToInteger(encodedMessage)
s = rsa.Decrypt(privKey, m)
signature = IntegerToBytes(s, KEY_BYTESIZE)
return signature
def IsEven(self, ciphernum):
plainnum = rsa.Decrypt(self._key, ciphernum)
return (plainnum % 2 == 0)
#coding=UTF-8
import sys
import rsa
import genkey
savedStdout = sys.stdout #保存标准输出流
with open('out.txt', 'w+') as file:
sys.stdout = file #标准输出重定向至文件
dist = genkey.GenerateKey(1024)
print(dist)
print("nlen: ", len(str(bin(dist["n"]))))
M = "I Love You! 我爱你 Я люблю тебя. " * 1
C = rsa.Encrypt(dist, M, "UTF-8")
Mr = rsa.Decrypt(dist, C, "UTF-8")
print(C)
print(Mr)
def decrypt(self, ciphertext):
if ciphertext in self._past_ciphertexts:
raise ValueError('Ciphertext was already decrypted')
self._past_ciphertexts[ciphertext] = True
return rsa.Decrypt(self._privateKey, ciphertext)