tests/testec.py

   1 from ctypescrypto.oid import Oid
   2 from ctypescrypto.ec import create
   3 from base64 import b16decode
   4 from subprocess import Popen, PIPE
   5 import unittest
   6
   7 def dump_key(key):
   8     """ Convert key into printable form using openssl utility
   9        Used to compare keys which can be stored in different
  10        format by different OpenSSL versions
  11     """
  12     return Popen(["openssl","pkey","-text","-noout"],stdin=PIPE,stdout=PIPE).communicate(key)[0]
  13
  14 def dump_pub_key(key):
  15     """ Convert key into printable form using openssl utility
  16        Used to compare keys which can be stored in different
  17        format by different OpenSSL versions
  18     """
  19     return Popen(["openssl","pkey","-text_pub","-noout"],stdin=PIPE,stdout=PIPE).communicate(key)[0]
  20 class TestEcCreation(unittest.TestCase):
  21     ec1priv="""-----BEGIN PRIVATE KEY-----
  22 MIGEAgEAMBAGByqGSM49AgEGBSuBBAAKBG0wawIBAQQgKnG6neqZvB98EEuuxnHs
  23 fv+L/5abuNNG20wzUqRpncOhRANCAARWKXWeUZ6WiCKZ2kHx87jmJyx0G3ZB1iQC
  24 +Gp2AJYswbQPhGPigKolzIbZYfwnn7QOca6N8QDhPAn3QQK8trZI
  25 -----END PRIVATE KEY-----
  26 """
  27     bigkey="""-----BEGIN PRIVATE KEY-----
  28 MIGEAgEAMBAGByqGSM49AgEGBSuBBAAKBG0wawIBAQQgAAAAAAAAAAAAAAAAAAAA
  29 AUVRIxlQt1/EQC2hcy/Jvr6hRANCAASRZsKJufkF5V+ePfn2nX81a0oiCV+JT0cV
  30 cUqktWYGr/GB65Zr5Ky1z/nha2bYCb6U4hTwbJP9CRCZr5hJklXn
  31 -----END PRIVATE KEY-----
  32 """
  33     def test_keyone(self):
  34         key=create(Oid("secp256k1"),b16decode("2A71BA9DEA99BC1F7C104BAEC671EC7EFF8BFF969BB8D346DB4C3352A4699DC3",True))
  35
  36         out=key.exportpriv()
  37         self.assertEqual(dump_key(out),dump_key(self.ec1priv))
  38         self.assertEqual(str(key),dump_pub_key(self.ec1priv))
  39
  40     def test_bignum(self):
  41         keyval='\xff'*32
  42         key=create(Oid("secp256k1"),keyval)
  43         self.assertEqual(dump_key(key.exportpriv()),dump_key(self.bigkey))
  44         self.assertEqual(str(key),dump_pub_key(self.bigkey))
  45 if __name__ == "__main__":
  46     unittest.main()