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359 lines
14 KiB
359 lines
14 KiB
# ===================================================================
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#
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# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ===================================================================
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import json
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import unittest
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from binascii import unhexlify
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from Crypto.Util.py3compat import bchr
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from Crypto.Util.number import bytes_to_long
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from Crypto.Util.strxor import strxor
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from Crypto.SelfTest.st_common import list_test_cases
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from Crypto.SelfTest.loader import load_tests
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from Crypto.Hash import (SHA1, SHA224, SHA256, SHA384, SHA512, SHA3_384,
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SHA3_224, SHA3_256, SHA3_512)
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from Crypto.PublicKey import RSA
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from Crypto.Signature import pkcs1_15
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from Crypto.Signature import PKCS1_v1_5
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from Crypto.Util._file_system import pycryptodome_filename
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from Crypto.Util.strxor import strxor
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def load_hash_by_name(hash_name):
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return __import__("Crypto.Hash." + hash_name, globals(), locals(), ["new"])
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class FIPS_PKCS1_Verify_Tests(unittest.TestCase):
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def shortDescription(self):
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return "FIPS PKCS1 Tests (Verify)"
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def test_can_sign(self):
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test_public_key = RSA.generate(1024).publickey()
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verifier = pkcs1_15.new(test_public_key)
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self.assertEqual(verifier.can_sign(), False)
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class FIPS_PKCS1_Verify_Tests_KAT(unittest.TestCase):
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pass
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test_vectors_verify = load_tests(("Crypto", "SelfTest", "Signature", "test_vectors", "PKCS1-v1.5"),
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"SigVer15_186-3.rsp",
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"Signature Verification 186-3",
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{ 'shaalg' : lambda x: x,
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'd' : lambda x: int(x),
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'result' : lambda x: x })
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for count, tv in enumerate(test_vectors_verify):
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if isinstance(tv, str):
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continue
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if hasattr(tv, "n"):
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modulus = tv.n
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continue
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hash_module = load_hash_by_name(tv.shaalg.upper())
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hash_obj = hash_module.new(tv.msg)
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public_key = RSA.construct([bytes_to_long(x) for x in (modulus, tv.e)]) # type: ignore
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verifier = pkcs1_15.new(public_key)
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def positive_test(self, hash_obj=hash_obj, verifier=verifier, signature=tv.s):
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verifier.verify(hash_obj, signature)
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def negative_test(self, hash_obj=hash_obj, verifier=verifier, signature=tv.s):
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self.assertRaises(ValueError, verifier.verify, hash_obj, signature)
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if tv.result == 'f':
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setattr(FIPS_PKCS1_Verify_Tests_KAT, "test_negative_%d" % count, negative_test)
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else:
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setattr(FIPS_PKCS1_Verify_Tests_KAT, "test_positive_%d" % count, positive_test)
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class FIPS_PKCS1_Sign_Tests(unittest.TestCase):
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def shortDescription(self):
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return "FIPS PKCS1 Tests (Sign)"
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def test_can_sign(self):
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test_private_key = RSA.generate(1024)
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signer = pkcs1_15.new(test_private_key)
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self.assertEqual(signer.can_sign(), True)
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class FIPS_PKCS1_Sign_Tests_KAT(unittest.TestCase):
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pass
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test_vectors_sign = load_tests(("Crypto", "SelfTest", "Signature", "test_vectors", "PKCS1-v1.5"),
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"SigGen15_186-2.txt",
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"Signature Generation 186-2",
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{ 'shaalg' : lambda x: x })
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test_vectors_sign += load_tests(("Crypto", "SelfTest", "Signature", "test_vectors", "PKCS1-v1.5"),
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"SigGen15_186-3.txt",
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"Signature Generation 186-3",
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{ 'shaalg' : lambda x: x })
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for count, tv in enumerate(test_vectors_sign):
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if isinstance(tv, str):
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continue
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if hasattr(tv, "n"):
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modulus = tv.n
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continue
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if hasattr(tv, "e"):
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private_key = RSA.construct([bytes_to_long(x) for x in (modulus, tv.e, tv.d)]) # type: ignore
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signer = pkcs1_15.new(private_key)
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continue
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hash_module = load_hash_by_name(tv.shaalg.upper())
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hash_obj = hash_module.new(tv.msg)
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def new_test(self, hash_obj=hash_obj, signer=signer, result=tv.s):
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signature = signer.sign(hash_obj)
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self.assertEqual(signature, result)
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setattr(FIPS_PKCS1_Sign_Tests_KAT, "test_%d" % count, new_test)
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class PKCS1_15_NoParams(unittest.TestCase):
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"""Verify that PKCS#1 v1.5 signatures pass even without NULL parameters in
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the algorithm identifier (PyCrypto/LP bug #1119552)."""
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rsakey = """-----BEGIN RSA PRIVATE KEY-----
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MIIBOwIBAAJBAL8eJ5AKoIsjURpcEoGubZMxLD7+kT+TLr7UkvEtFrRhDDKMtuII
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q19FrL4pUIMymPMSLBn3hJLe30Dw48GQM4UCAwEAAQJACUSDEp8RTe32ftq8IwG8
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Wojl5mAd1wFiIOrZ/Uv8b963WJOJiuQcVN29vxU5+My9GPZ7RA3hrDBEAoHUDPrI
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OQIhAPIPLz4dphiD9imAkivY31Rc5AfHJiQRA7XixTcjEkojAiEAyh/pJHks/Mlr
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+rdPNEpotBjfV4M4BkgGAA/ipcmaAjcCIQCHvhwwKVBLzzTscT2HeUdEeBMoiXXK
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JACAr3sJQJGxIQIgarRp+m1WSKV1MciwMaTOnbU7wxFs9DP1pva76lYBzgUCIQC9
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n0CnZCJ6IZYqSt0H5N7+Q+2Ro64nuwV/OSQfM6sBwQ==
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-----END RSA PRIVATE KEY-----"""
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msg = b"This is a test\x0a"
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# PKCS1 v1.5 signature of the message computed using SHA-1.
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# The digestAlgorithm SEQUENCE does NOT contain the NULL parameter.
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sig_str = "a287a13517f716e72fb14eea8e33a8db4a4643314607e7ca3e3e28"\
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"1893db74013dda8b855fd99f6fecedcb25fcb7a434f35cd0a101f8"\
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"b19348e0bd7b6f152dfc"
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signature = unhexlify(sig_str)
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def runTest(self):
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verifier = pkcs1_15.new(RSA.importKey(self.rsakey))
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hashed = SHA1.new(self.msg)
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verifier.verify(hashed, self.signature)
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class PKCS1_Legacy_Module_Tests(unittest.TestCase):
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"""Verify that the legacy module Crypto.Signature.PKCS1_v1_5
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behaves as expected. The only difference is that the verify()
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method returns True/False and does not raise exceptions."""
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def shortDescription(self):
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return "Test legacy Crypto.Signature.PKCS1_v1_5"
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def runTest(self):
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key = RSA.importKey(PKCS1_15_NoParams.rsakey)
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hashed = SHA1.new(b"Test")
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good_signature = PKCS1_v1_5.new(key).sign(hashed)
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verifier = PKCS1_v1_5.new(key.publickey())
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self.assertEqual(verifier.verify(hashed, good_signature), True)
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# Flip a few bits in the signature
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bad_signature = strxor(good_signature, bchr(1) * len(good_signature))
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self.assertEqual(verifier.verify(hashed, bad_signature), False)
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class PKCS1_All_Hashes_Tests(unittest.TestCase):
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def shortDescription(self):
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return "Test PKCS#1v1.5 signature in combination with all hashes"
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def runTest(self):
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key = RSA.generate(1024)
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signer = pkcs1_15.new(key)
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hash_names = ("MD2", "MD4", "MD5", "RIPEMD160", "SHA1",
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"SHA224", "SHA256", "SHA384", "SHA512",
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"SHA3_224", "SHA3_256", "SHA3_384", "SHA3_512")
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for name in hash_names:
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hashed = load_hash_by_name(name).new(b"Test")
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signer.sign(hashed)
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from Crypto.Hash import BLAKE2b, BLAKE2s
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for hash_size in (20, 32, 48, 64):
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hashed_b = BLAKE2b.new(digest_bytes=hash_size, data=b"Test")
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signer.sign(hashed_b)
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for hash_size in (16, 20, 28, 32):
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hashed_s = BLAKE2s.new(digest_bytes=hash_size, data=b"Test")
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signer.sign(hashed_s)
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class TestVectorsWycheproof(unittest.TestCase):
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def __init__(self, wycheproof_warnings):
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unittest.TestCase.__init__(self)
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self._wycheproof_warnings = wycheproof_warnings
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self._id = "None"
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def setUp(self):
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self.tv = []
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self.add_tests("rsa_sig_gen_misc_test.json")
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self.add_tests("rsa_signature_2048_sha224_test.json")
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self.add_tests("rsa_signature_2048_sha256_test.json")
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self.add_tests("rsa_signature_2048_sha384_test.json")
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self.add_tests("rsa_signature_2048_sha3_224_test.json")
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self.add_tests("rsa_signature_2048_sha3_256_test.json")
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self.add_tests("rsa_signature_2048_sha3_384_test.json")
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self.add_tests("rsa_signature_2048_sha3_512_test.json")
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self.add_tests("rsa_signature_2048_sha512_test.json")
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self.add_tests("rsa_signature_2048_sha512_224_test.json")
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self.add_tests("rsa_signature_2048_sha512_256_test.json")
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self.add_tests("rsa_signature_3072_sha256_test.json")
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self.add_tests("rsa_signature_3072_sha384_test.json")
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self.add_tests("rsa_signature_3072_sha3_256_test.json")
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self.add_tests("rsa_signature_3072_sha3_384_test.json")
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self.add_tests("rsa_signature_3072_sha3_512_test.json")
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self.add_tests("rsa_signature_3072_sha512_test.json")
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self.add_tests("rsa_signature_3072_sha512_256_test.json")
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self.add_tests("rsa_signature_4096_sha384_test.json")
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self.add_tests("rsa_signature_4096_sha512_test.json")
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self.add_tests("rsa_signature_4096_sha512_256_test.json")
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self.add_tests("rsa_signature_test.json")
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def add_tests(self, filename):
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comps = "Crypto.SelfTest.Signature.test_vectors.wycheproof".split(".")
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with open(pycryptodome_filename(comps, filename), "rt") as file_in:
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tv_tree = json.load(file_in)
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class TestVector(object):
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pass
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self.tv = []
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for group in tv_tree['testGroups']:
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key = RSA.import_key(group['keyPem'])
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hash_name = group['sha']
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if hash_name == "SHA-512":
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hash_module = SHA512
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elif hash_name == "SHA-512/224":
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hash_module = SHA512.new(truncate="224")
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elif hash_name == "SHA-512/256":
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hash_module = SHA512.new(truncate="256")
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elif hash_name == "SHA3-512":
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hash_module = SHA3_512
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elif hash_name == "SHA-384":
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hash_module = SHA384
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elif hash_name == "SHA3-384":
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hash_module = SHA3_384
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elif hash_name == "SHA-256":
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hash_module = SHA256
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elif hash_name == "SHA3-256":
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hash_module = SHA3_256
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elif hash_name == "SHA-224":
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hash_module = SHA224
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elif hash_name == "SHA3-224":
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hash_module = SHA3_224
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elif hash_name == "SHA-1":
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hash_module = SHA1
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else:
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raise ValueError("Unknown hash algorithm: " + hash_name)
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type_name = group['type']
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if type_name not in ("RsassaPkcs1Verify", "RsassaPkcs1Generate"):
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raise ValueError("Unknown type name " + type_name)
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for test in group['tests']:
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tv = TestVector()
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tv.id = test['tcId']
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tv.comment = test['comment']
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for attr in 'msg', 'sig':
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setattr(tv, attr, unhexlify(test[attr]))
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tv.key = key
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tv.hash_module = hash_module
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tv.valid = test['result'] != "invalid"
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tv.warning = test['result'] == "acceptable"
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self.tv.append(tv)
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def shortDescription(self):
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return self._id
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def warn(self, tv):
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if tv.warning and self._wycheproof_warnings:
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import warnings
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warnings.warn("Wycheproof warning: %s (%s)" % (self._id, tv.comment))
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def test_verify(self, tv):
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self._id = "Wycheproof RSA PKCS$#1 Test #" + str(tv.id)
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hashed_msg = tv.hash_module.new(tv.msg)
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signer = pkcs1_15.new(tv.key)
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try:
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signature = signer.verify(hashed_msg, tv.sig)
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except ValueError as e:
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if tv.warning:
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return
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assert not tv.valid
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else:
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assert tv.valid
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self.warn(tv)
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def runTest(self):
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for tv in self.tv:
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self.test_verify(tv)
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def get_tests(config={}):
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wycheproof_warnings = config.get('wycheproof_warnings')
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tests = []
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tests += list_test_cases(FIPS_PKCS1_Verify_Tests)
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tests += list_test_cases(FIPS_PKCS1_Sign_Tests)
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tests += list_test_cases(PKCS1_15_NoParams)
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tests += list_test_cases(PKCS1_Legacy_Module_Tests)
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tests += list_test_cases(PKCS1_All_Hashes_Tests)
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tests += [ TestVectorsWycheproof(wycheproof_warnings) ]
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if config.get('slow_tests'):
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tests += list_test_cases(FIPS_PKCS1_Verify_Tests_KAT)
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tests += list_test_cases(FIPS_PKCS1_Sign_Tests_KAT)
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return tests
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if __name__ == '__main__':
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suite = lambda: unittest.TestSuite(get_tests())
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unittest.main(defaultTest='suite')
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