def rsaDecode(Ciphertext, d, n):
C = int(Ciphertext)
M = str(bin(C**d % n))[2:]
while len(M) < 8:
M = "0" + M
Plaintext = Tools.AsciiToString(M)
return Plaintext
def Group_desDecode(Ciphertext):
Ciphertext_ascii = Tools.stringToAscii(Ciphertext)
global ZeroNum
GroupNum = len(Ciphertext_ascii) // 64
Ciphertext_G = []
for i in range(0, GroupNum):
Ciphertext_G.append(Ciphertext_ascii[64 * i:64 * (i + 1)])
Plaintext_ascii = ""
for i in Ciphertext_G:
Plaintext_G = DES.desDecode(i)
Plaintext_ascii += Plaintext_G
Plaintext_ascii = Plaintext_ascii[0:(len(Plaintext_ascii) - ZeroNum)]
Plaintext = Tools.AsciiToString(Plaintext_ascii)
Plaintext = codecs.escape_decode(Plaintext)[0]
Plaintext = Plaintext.decode("utf8")
return Plaintext
def desEncode(Plaintext, keyseed):
init_ip = init_IP.init_IP(Plaintext)
L = init_ip[0:32]
R = init_ip[32:64]
global Key
for i in range(1, 17):
key = GetKeys.GetKeys(keyseed, i)
K, keyseed = key.split(",")
Key.append(K)
L_ = R
after_F = F_fanc.F_fanc(R, K)
F_int = int(after_F, 2)
L_int = int(L, 2)
R_ = str(bin(F_int ^ L_int).split("0b")[1])
while R_.__len__() < 32:
R_ = "0" + R_
L = L_
R = R_
msg = R + L
Ciphertext_ascii = IV_IP.IV_IP(msg)
Ciphertext = Tools.AsciiToString(Ciphertext_ascii)
return Ciphertext
