def rsa_key_export():
masterkey = rsa.generate_key( 2048 )
print '[+] generate OK!'
print '[+] exporting keypair to disk...'
rsa.export_keypair( 'rsa_server', masterkey )
print '\t[+] attempting to reload keypair from disk... ',
pubkey = rsa.load_key('rsa_server.pub')
prvkey = rsa.load_key('rsa_server.prv')
assert( prvkey.has_private() )
assert( not pubkey.has_private() )
print 'OK!'
assert(pubkey == prvkey.publickey())
def rsa_decrypt(message):
try:
key=rsa.load_key('rsa_server.prv')
except:
print '[+] load public key error'
try:
print '\t[+] attempting to generate new key pair'
rsa_key_export()
except:
print '\t[-] generate new key pair error'
return 'Error'
if '\x00' == message[0]:
message = message[1:]
elif '\x41' == message[0]:
message = base64.decodestring( message[1:] )
plaintext = key.decrypt( message )
return plaintext
def rsa_encrypt(message,armour = True):
try:
key=rsa.load_key('rsa_server.pub')
except:
print '[+] load public key error'
try:
print '\t[+] attempting to generate new key pair'
rsa_key_export()
except:
print '\t[-] generate new key pair error'
ciphertext = key.encrypt( message, None )
ciphertext = ciphertext[0]
if armour:
ciphertext = '\x41' + base64.encodestring( ciphertext )
else:
ciphertext = '\x00' + ciphertext
return ciphertext
