2017-11-25 09:23:50 +00:00
|
|
|
from __future__ import print_function
|
2016-09-06 12:23:48 +00:00
|
|
|
import random, sys, os
|
|
|
|
|
import rabin_miller as rabinMiller, cryptomath_module as cryptoMath
|
|
|
|
|
|
|
|
|
|
def main():
|
|
|
|
|
print('Making key files...')
|
|
|
|
|
makeKeyFiles('rsa', 1024)
|
|
|
|
|
print('Key files generation successful.')
|
|
|
|
|
|
|
|
|
|
def generateKey(keySize):
|
|
|
|
|
print('Generating prime p...')
|
|
|
|
|
p = rabinMiller.generateLargePrime(keySize)
|
|
|
|
|
print('Generating prime q...')
|
|
|
|
|
q = rabinMiller.generateLargePrime(keySize)
|
|
|
|
|
n = p * q
|
|
|
|
|
|
|
|
|
|
print('Generating e that is relatively prime to (p - 1) * (q - 1)...')
|
|
|
|
|
while True:
|
|
|
|
|
e = random.randrange(2 ** (keySize - 1), 2 ** (keySize))
|
|
|
|
|
if cryptoMath.gcd(e, (p - 1) * (q - 1)) == 1:
|
|
|
|
|
break
|
|
|
|
|
|
|
|
|
|
print('Calculating d that is mod inverse of e...')
|
|
|
|
|
d = cryptoMath.findModInverse(e, (p - 1) * (q - 1))
|
|
|
|
|
|
|
|
|
|
publicKey = (n, e)
|
|
|
|
|
privateKey = (n, d)
|
|
|
|
|
return (publicKey, privateKey)
|
|
|
|
|
|
|
|
|
|
def makeKeyFiles(name, keySize):
|
|
|
|
|
if os.path.exists('%s_pubkey.txt' % (name)) or os.path.exists('%s_privkey.txt' % (name)):
|
|
|
|
|
print('\nWARNING:')
|
|
|
|
|
print('"%s_pubkey.txt" or "%s_privkey.txt" already exists. \nUse a different name or delete these files and re-run this program.' % (name, name))
|
|
|
|
|
sys.exit()
|
|
|
|
|
|
|
|
|
|
publicKey, privateKey = generateKey(keySize)
|
|
|
|
|
print('\nWriting public key to file %s_pubkey.txt...' % name)
|
|
|
|
|
with open('%s_pubkey.txt' % name, 'w') as fo:
|
|
|
|
|
fo.write('%s,%s,%s' % (keySize, publicKey[0], publicKey[1]))
|
|
|
|
|
|
|
|
|
|
print('Writing private key to file %s_privkey.txt...' % name)
|
|
|
|
|
with open('%s_privkey.txt' % name, 'w') as fo:
|
|
|
|
|
fo.write('%s,%s,%s' % (keySize, privateKey[0], privateKey[1]))
|
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
|
|
main()
|
