def signature(inputfile, mode_signature, key='1'):
inputfile = fileio.readfile(inputfile)
if mode_signature == 'elgamal':
signature = signature_elgamal.Sign_elgamal(512, key)
rr, ss = signature.sign(inputfile)
fileio.writefile('rr_signed', rr.to_bytes(128, byteorder='big'))
fileio.writefile('ss_signed', ss.to_bytes(128, byteorder='big'))
else:
signature = signature_RSA.Sign_hash(key)
signed = signature.sign(inputfile)
fileio.writefile('rsa_signed', signed.to_bytes(128, byteorder='big'))
return signature
def dechifKasumi(inputfile,
outputfile,
mode,
key=0x9900aabbccddeeff1122334455667788,
iv=0x121a12340987198):
inputfile = fileio.readfile(inputfile)
kasumsym = Kasumi.Kasumi_symtrique(key)
if mode == 'ecb':
msg_dec = kasumsym.decryption_ecb(inputfile)
elif mode == 'cbc':
msg_dec = kasumsym.decryption_cbc(inputfile, iv)
elif mode == 'pcbc':
msg_dec = kasumsym.decryption_pcbc(inputfile, iv)
else:
msg_dec = kasumsym.decryption_ecb(inputfile)
print(inputfile)
print(msg_dec)
fileio.writefile(outputfile, msg_dec)
return msg_dec
name = input('/>')
print("Enter number of bits:")
nbits = int(input('/>'))
print("Enter number Confidence:")
confidence = int(input('/>'))
key_generate.create_keypair(nbits, confidence, name)
print(
'Generation de cle fini. Trouve ces valeurs dans le fichier key/elgamal/name_key'
)
elif selection == '4':
print("Generation de hashage sans signature avec Modified MD5\n")
print("Enter file directory to read from")
inputfile = input('/>')
print("Enter file directory to write to")
outputfile = input('/>')
inputfile = fileio.readfile(inputfile)
hashsponge = eponge_md5.hash_sponge(inputfile)
print('Hashage generation finished')
fileio.writefile(outputfile,
hashsponge.to_bytes(16, byteorder='big'))
elif selection == '5':
print(
"Signature avec cle pair en mode RSA ou Elgamal: First select your mode"
)
mode_signature = input('/>')
print("Enter file directory to read from")
inputfile = input('/>')
print("Enter the name of key pair to use")
name_key = input('/>')
if mode_signature == 'elgamal':
blockdecry = blockdecry ^ previous_cipher ^ previous_plain
previous_cipher = block
previous_plain = blockdecry
print("block:", hex(block),
"previous_cipher:", hex(previous_cipher), "previous_plain",
hex(previous_plain), "encryption:", hex(blockdecry))
blockbyte = blockdecry.to_bytes(8, byteorder="little")
blocks_dec.append(blockbyte)
# CBC mode decrypt: previous XOR decrypt(ciphertext)
#for each block we do: 1.decryption KASUMI 2. Add vector previous
return self.unpad(b''.join(blocks_dec))
if __name__ == '__main__':
key = 0x9900aabbccddeeff1122334455667788
msg = "hillooverby2_fuckgs15"
arr = bytes(msg, 'utf-8')
kasumsym = Kasumi_symtrique(key)
iv = 0x121a12340987198
#msg_enc = kasumsym.encryption_ecb(arr)
#msg_dec = kasumsym.decryption_ecb(msg_enc)
#msg_enc = kasumsym.encryption_cbc(arr,iv)
#msg_dec = kasumsym.decryption_cbc(msg_enc,iv)
arr = fileio.readfile('data.txt')
msg_enc = kasumsym.encryption_pcbc(arr, iv)
fileio.writefile('enc', msg_enc)
msg_dec = fileio.readfile('enc')
msg_dec = kasumsym.decryption_pcbc(msg_enc, iv)
fileio.writefile('dec', msg_dec)
print(arr)
print(msg_enc)
print(msg_dec)