diff options
Diffstat (limited to 'server/crypto.py')
| -rw-r--r-- | server/crypto.py | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/server/crypto.py b/server/crypto.py new file mode 100644 index 0000000..f99001f --- /dev/null +++ b/server/crypto.py @@ -0,0 +1,28 @@ +from keyczar import keys +import ssh_rsa_key_util + +if __name__ == '__main__' : + #load asymmetric keys for 2 users. user1 key is generated, + #while user2 key is loaded from disk + keyuser1 = keys.RsaPrivateKey.Generate() + keyuser1public = keyuser1.public_key + ssh_keys_directory = '/home/guillaume/.ssh/' + keyuser2 = ssh_rsa_key_util.SshRsaPrivateKey.Read(ssh_keys_directory + 'id_rsa') + keyuser2public = keyuser2.public_key + + #symmetric key to encrypt the data + key = keys.AesKey.Generate() + #encrypt symmetric key for user 1 and 2 + key1 = keyuser1public.Encrypt(key.key_string) + key2 = keyuser2public.Encrypt(key.key_string) + + msg = 'Guillaume is a genius!' + secretmsg = key.Encrypt(msg) + + #msg decoded by user 1 + newkey1 = keys.AesKey(keyuser1.Decrypt(key1), key.hmac_key) + print newkey1.Decrypt(secretmsg) + + #msg decoded by user 2 + newkey2 = keys.AesKey(keyuser1.Decrypt(key1), key.hmac_key) + print newkey2.Decrypt(secretmsg) |