Hesham/hesham-rsa
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Add signiture in last word.

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Redid key save file to inclue id.

Signed-off-by: HeshamTB <hishaminv@gmail.com>
This commit is contained in:
HeshamTB 2020-04-17 23:53:07 +03:00
parent ad95ca82da
commit 486e40c7f5
Signed by: Hesham
GPG Key ID: 74876157D199B09E
1 changed files with 22 additions and 8 deletions
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30
rsa.py
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@ -22,13 +22,14 @@ D=2
P=3 P=3
Q=4 Q=4
PHI=5 PHI=5
ID=6
def main(): def main():
if sys.argv[1] == "gen": ##rsa gen <keysize> <keyname> if sys.argv[1] == "gen": ##rsa gen <keysize> <keyname>
key = generateKeys(int(sys.argv[2]))
printKey(key)
keyFileName = sys.argv[3] keyFileName = sys.argv[3]
key = generateKeys(keyFileName, int(sys.argv[2]))
printKey(key)
try: try:
saveKeyFile(key, keyFileName) saveKeyFile(key, keyFileName)
except IOError: except IOError:
@ -49,6 +50,7 @@ def main():
msg_encrypted = msg_encrypted + " " + str(encrypt(word, key_public)) msg_encrypted = msg_encrypted + " " + str(encrypt(word, key_public))
#msg_encrypted = encrypt(msg, key_public) #msg_encrypted = encrypt(msg, key_public)
print("Encrypted msg: \n", msg_encrypted) print("Encrypted msg: \n", msg_encrypted)
print("Signed: \n", sign(msg_encrypted, key))
if sys.argv[1] == "decrypt": ##rsa decrypt <cipher> <key> if sys.argv[1] == "decrypt": ##rsa decrypt <cipher> <key>
cipher = sys.argv[2] cipher = sys.argv[2]
cipher_list = cipher.split() cipher_list = cipher.split()
@ -63,7 +65,7 @@ def main():
def generateKeys(bits=64): def generateKeys(id, bits=64):
from multiprocessing.pool import Pool from multiprocessing.pool import Pool
#Primes of size 32 bit random #Primes of size 32 bit random
#resulting in a 64-bit key mod #resulting in a 64-bit key mod
@ -87,7 +89,7 @@ def generateKeys(bits=64):
# recommended value is 65,537 # recommended value is 65,537
e = 65537 e = 65537
d = pow(e,-1,phi) d = pow(e,-1,phi)
return (n, e, d, p, q, phi) return (n, e, d, p, q, phi, id)
def encrypt(message, publicKey): def encrypt(message, publicKey):
msg_text = message msg_text = message
@ -145,19 +147,30 @@ def isPrime(number):
return False return False
return True return True
def sign(encrypted_msg, key):
enc_msg = str(encrypted_msg)
encrypted_msg_list = enc_msg.split()
enc_sig = encrypt("sig:"+key[ID], (key[N], key[D]))
encrypted_msg_list.append(enc_sig)
signed_msg = ""
for word in encrypted_msg_list:
signed_msg = str(signed_msg) + " " + str(word)
return signed_msg
def readKeyFile(keyName): def readKeyFile(keyName):
key = tuple() key = tuple()
with open(keysFolder+keyName, "r") as keyFile: with open(keysFolder+keyName, "r") as keyFile:
tempkey = keyFile.readlines() tempkey = keyFile.readlines()
if len(tempkey) == 2: #means it only public part (n, e) if len(tempkey) == 2: #means it only public part (n, e)
key = (int(tempkey[N].strip(), 16), int(tempkey[E].strip(), 16)) key = (int(tempkey[N].strip(), 16), int(tempkey[E].strip(), 16), 0, 0, 0, 0, tempkey[ID])
else: #Make this a loop from 0 to 5 else: #Make this a loop from 0 to 5
key = (int(tempkey[N].strip(), 16), key = (int(tempkey[N].strip(), 16),
int(tempkey[E].strip(), 16), int(tempkey[E].strip(), 16),
int(tempkey[D].strip(), 16), int(tempkey[D].strip(), 16),
int(tempkey[P].strip(), 16), int(tempkey[P].strip(), 16),
int(tempkey[Q].strip(), 16), int(tempkey[Q].strip(), 16),
int(tempkey[PHI].strip(), 16)) int(tempkey[PHI].strip(), 16),
str(tempkey[ID].strip()))
return key return key
@ -165,8 +178,9 @@ def saveKeyFile(key, fileName):
if not os.path.isdir(keysFolder): if not os.path.isdir(keysFolder):
os.makedirs(keysFolder) os.makedirs(keysFolder)
with open(keysFolder+fileName, "w") as keyFile: with open(keysFolder+fileName, "w") as keyFile:
for entry in key: for entry in range(0, 5):
keyFile.write(hex(entry)+"\n") keyFile.write(hex(key[entry])+"\n")
keyFile.write(key[ID]+"\n")
def printKey(key): def printKey(key):
n = key[N] n = key[N]