wolfcrypt-py/test/test_ciphers.py

# test_ciphers.py
#
# Copyright (C) 2006-2016 wolfSSL Inc.
#
# This file is part of wolfSSL. (formerly known as CyaSSL)
#
# wolfSSL is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# wolfSSL is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
import unittest
from wolfcrypt.ciphers import *

class TestDes3(unittest.TestCase):
    key    = "0123456789abcdeffedeba987654321089abcdef01234567".decode("hex")
    IV     = "1234567890abcdef".decode("hex")
    plain  = "Now is the time for all "
    cipher = "43a0297ed184f80e8964843212d508981894157487127db0".decode("hex")


    def setUp(self):
        self.des3 = Des3.new(self.key, MODE_CBC, self.IV)


    def test_raises(self):
        # invalid construction
        self.assertRaises(ValueError, Des3)

        # invalid key length
        self.assertRaises(ValueError, Des3.new, "key", MODE_CBC, self.IV)

        # invalid mode
        self.assertRaises(ValueError, Des3.new, self.key, MODE_ECB, self.IV)

        # invalid iv length
        self.assertRaises(ValueError, Des3.new, self.key, MODE_CBC, "IV")

        # invalid data length
        self.assertRaises(ValueError, self.des3.encrypt, "foo")
        self.assertRaises(ValueError, self.des3.decrypt, "bar")


    def test_single_encryption(self):
        assert self.des3.encrypt(self.plain) == self.cipher


    def test_multi_encryption(self):
        result = ""
        segments = tuple(self.plain[i:i + Des3.block_size] \
            for i in range(0, len(self.plain), Des3.block_size))

        for segment in segments:
            result += self.des3.encrypt(segment)

        assert result == self.cipher


    def test_single_decryption(self):
        assert self.des3.decrypt(self.cipher) == self.plain


    def test_multi_decryption(self):
        result = ""
        segments = tuple(self.cipher[i:i + Des3.block_size] \
            for i in range(0, len(self.cipher), Des3.block_size))

        for segment in segments:
            result += self.des3.decrypt(segment)

        assert result == self.plain


class TestAes(unittest.TestCase):
    key    = "0123456789abcdef"
    IV     = "1234567890abcdef"
    plain  = "now is the time "
    cipher = "959492575f4281532ccc9d4677a233cb".decode("hex")


    def setUp(self):
        self.aes = Aes.new(self.key, MODE_CBC, self.IV)


    def test_raises(self):
        # invalid construction
        self.assertRaises(ValueError, Aes)

        # invalid key length
        self.assertRaises(ValueError, Aes.new, "key", MODE_CBC, self.IV)

        # invalid mode
        self.assertRaises(ValueError, Aes.new, self.key, MODE_ECB, self.IV)

        # invalid iv length
        self.assertRaises(ValueError, Aes.new, self.key, MODE_CBC, "IV")

        # invalid data length
        self.assertRaises(ValueError, self.aes.encrypt, "foo")
        self.assertRaises(ValueError, self.aes.decrypt, "bar")


    def test_single_encryption(self):
        assert self.aes.encrypt(self.plain) == self.cipher


    def test_multi_encryption(self):
        result = ""
        segments = tuple(self.plain[i:i + self.aes.block_size] \
            for i in range(0, len(self.plain), self.aes.block_size))

        for segment in segments:
            result += self.aes.encrypt(segment)

        assert result == self.cipher


    def test_single_decryption(self):
        assert self.aes.decrypt(self.cipher) == self.plain


    def test_multi_decryption(self):
        result = ""
        segments = tuple(self.cipher[i:i + self.aes.block_size] \
            for i in range(0, len(self.cipher), self.aes.block_size))

        for segment in segments:
            result += self.aes.decrypt(segment)

        assert result == self.plain


class TestRsaPrivate(unittest.TestCase):
    key = "3082025C02010002818100BC730EA849F374A2A9EF18A5DA559921F9C8ECB36D" \
        + "48E53535757737ECD161905F3ED9E4D5DF94CAC1A9D719DA86C9E84DC4613682" \
        + "FEABAD7E7725BB8D11A5BC623AA838CC39A20466B4F7F7F3AADA4D020EBB5E8D" \
        + "6948DC77C9280E22E96BA426BA4CE8C1FD4A6F2B1FEF8AAEF69062E5641EEB2B" \
        + "3C67C8DC2700F6916865A902030100010281801397EAE8387825A25C04CE0D40" \
        + "7C31E5C470CD9B823B5809863B665FDC3190F14FD5DB15DDDED73B9593311831" \
        + "0E5EA3D6A21A716E81481C4BCFDB8E7A866132DCFB55C1166D279224458BF1B8" \
        + "48B14B1DACDEDADD8E2FC291FBA5A96EF83A6AF1FD5018EF9FE7C3CA78EA56D3" \
        + "D3725B96DD4E064E3AC3D9BE72B66507074C01024100FA47D47A7C923C55EF81" \
        + "F041302DA3CF8F1CE6872705700DDF9835D6F18B382F24B5D084B6794F712994" \
        + "5AF0646AACE772C6ED4D59983E673AF3742CF9611769024100C0C1820D0CEBC6" \
        + "2FDC92F99D821A31E9E9F74BF282871CEE166AD11D188270F3C0B62FF6F3F71D" \
        + "F18623C84EEB8F568E8FF5BFF1F72BB5CC3DC657390C1B54410241009D7E05DE" \
        + "EDF4B7B2FBFC304B551DE32F0147966905CD0E2E2CBD8363B6AB7CB76DCA5B64" \
        + "A7CEBE86DF3B53DE61D21EEBA5F637EDACAB78D94CE755FBD71199C102401898" \
        + "1829E61E2739702168AC0A2FA172C121869538C65890A0579CBAE3A7B115C8DE" \
        + "F61BC2612376EFB09D1C44BE1343396717C89DCAFBF545648B38822CF2810240" \
        + "3989E59C195530BAB7488C48140EF49F7E779743E1B419353123759C3B44AD69" \
        + "1256EE0061641666D37C742B15B4A2FEBF086B1A5D3F9012B105863129DBD9E2"

    def setUp(self):
        self.rsa = RsaPrivate(self.key.decode("hex"))


    def test_raises(self):
        # invalid construction
        self.assertRaises(KeyError, RsaPrivate, 'key')