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Qichao
2023-10-08 20:59:00 +08:00
parent b494be364b
commit 1dac226337
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lib/Crypto/SelfTest/Signature/test_pkcs1_15.py Normal file
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# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
import json
import unittest
from binascii import unhexlify
from Crypto.Util.py3compat import bchr
from Crypto.Util.number import bytes_to_long
from Crypto.Util.strxor import strxor
from Crypto.SelfTest.st_common import list_test_cases
from Crypto.SelfTest.loader import load_test_vectors, load_test_vectors_wycheproof
from Crypto.Hash import (SHA1, SHA224, SHA256, SHA384, SHA512, SHA3_384,
SHA3_224, SHA3_256, SHA3_512)
from Crypto.PublicKey import RSA
from Crypto.Signature import pkcs1_15
from Crypto.Signature import PKCS1_v1_5
from Crypto.Util._file_system import pycryptodome_filename
from Crypto.Util.strxor import strxor
def load_hash_by_name(hash_name):
return __import__("Crypto.Hash." + hash_name, globals(), locals(), ["new"])
class FIPS_PKCS1_Verify_Tests(unittest.TestCase):
def shortDescription(self):
return "FIPS PKCS1 Tests (Verify)"
def test_can_sign(self):
test_public_key = RSA.generate(1024).public_key()
verifier = pkcs1_15.new(test_public_key)
self.assertEqual(verifier.can_sign(), False)
class FIPS_PKCS1_Verify_Tests_KAT(unittest.TestCase):
pass
test_vectors_verify = load_test_vectors(("Signature", "PKCS1-v1.5"),
"SigVer15_186-3.rsp",
"Signature Verification 186-3",
{'shaalg': lambda x: x,
'd': lambda x: int(x),
'result': lambda x: x}) or []
for count, tv in enumerate(test_vectors_verify):
if isinstance(tv, str):
continue
if hasattr(tv, "n"):
modulus = tv.n
continue
hash_module = load_hash_by_name(tv.shaalg.upper())
hash_obj = hash_module.new(tv.msg)
public_key = RSA.construct([bytes_to_long(x) for x in (modulus, tv.e)]) # type: ignore
verifier = pkcs1_15.new(public_key)
def positive_test(self, hash_obj=hash_obj, verifier=verifier, signature=tv.s):
verifier.verify(hash_obj, signature)
def negative_test(self, hash_obj=hash_obj, verifier=verifier, signature=tv.s):
self.assertRaises(ValueError, verifier.verify, hash_obj, signature)
if tv.result == 'f':
setattr(FIPS_PKCS1_Verify_Tests_KAT, "test_negative_%d" % count, negative_test)
else:
setattr(FIPS_PKCS1_Verify_Tests_KAT, "test_positive_%d" % count, positive_test)
class FIPS_PKCS1_Sign_Tests(unittest.TestCase):
def shortDescription(self):
return "FIPS PKCS1 Tests (Sign)"
def test_can_sign(self):
test_private_key = RSA.generate(1024)
signer = pkcs1_15.new(test_private_key)
self.assertEqual(signer.can_sign(), True)
class FIPS_PKCS1_Sign_Tests_KAT(unittest.TestCase):
pass
test_vectors_sign = load_test_vectors(("Signature", "PKCS1-v1.5"),
"SigGen15_186-2.txt",
"Signature Generation 186-2",
{'shaalg': lambda x: x}) or []
test_vectors_sign += load_test_vectors(("Signature", "PKCS1-v1.5"),
"SigGen15_186-3.txt",
"Signature Generation 186-3",
{'shaalg': lambda x: x}) or []
for count, tv in enumerate(test_vectors_sign):
if isinstance(tv, str):
continue
if hasattr(tv, "n"):
modulus = tv.n
continue
if hasattr(tv, "e"):
private_key = RSA.construct([bytes_to_long(x) for x in (modulus, tv.e, tv.d)]) # type: ignore
signer = pkcs1_15.new(private_key)
continue
hash_module = load_hash_by_name(tv.shaalg.upper())
hash_obj = hash_module.new(tv.msg)
def new_test(self, hash_obj=hash_obj, signer=signer, result=tv.s):
signature = signer.sign(hash_obj)
self.assertEqual(signature, result)
setattr(FIPS_PKCS1_Sign_Tests_KAT, "test_%d" % count, new_test)
class PKCS1_15_NoParams(unittest.TestCase):
"""Verify that PKCS#1 v1.5 signatures pass even without NULL parameters in
the algorithm identifier (PyCrypto/LP bug #1119552)."""
rsakey = """-----BEGIN RSA PRIVATE KEY-----
MIIBOwIBAAJBAL8eJ5AKoIsjURpcEoGubZMxLD7+kT+TLr7UkvEtFrRhDDKMtuII
q19FrL4pUIMymPMSLBn3hJLe30Dw48GQM4UCAwEAAQJACUSDEp8RTe32ftq8IwG8
Wojl5mAd1wFiIOrZ/Uv8b963WJOJiuQcVN29vxU5+My9GPZ7RA3hrDBEAoHUDPrI
OQIhAPIPLz4dphiD9imAkivY31Rc5AfHJiQRA7XixTcjEkojAiEAyh/pJHks/Mlr
+rdPNEpotBjfV4M4BkgGAA/ipcmaAjcCIQCHvhwwKVBLzzTscT2HeUdEeBMoiXXK
JACAr3sJQJGxIQIgarRp+m1WSKV1MciwMaTOnbU7wxFs9DP1pva76lYBzgUCIQC9
n0CnZCJ6IZYqSt0H5N7+Q+2Ro64nuwV/OSQfM6sBwQ==
-----END RSA PRIVATE KEY-----"""
msg = b"This is a test\x0a"
# PKCS1 v1.5 signature of the message computed using SHA-1.
# The digestAlgorithm SEQUENCE does NOT contain the NULL parameter.
sig_str = "a287a13517f716e72fb14eea8e33a8db4a4643314607e7ca3e3e28"\
"1893db74013dda8b855fd99f6fecedcb25fcb7a434f35cd0a101f8"\
"b19348e0bd7b6f152dfc"
signature = unhexlify(sig_str)
def runTest(self):
verifier = pkcs1_15.new(RSA.importKey(self.rsakey))
hashed = SHA1.new(self.msg)
verifier.verify(hashed, self.signature)
class PKCS1_Legacy_Module_Tests(unittest.TestCase):
"""Verify that the legacy module Crypto.Signature.PKCS1_v1_5
behaves as expected. The only difference is that the verify()
method returns True/False and does not raise exceptions."""
def shortDescription(self):
return "Test legacy Crypto.Signature.PKCS1_v1_5"
def runTest(self):
key = RSA.importKey(PKCS1_15_NoParams.rsakey)
hashed = SHA1.new(b"Test")
good_signature = PKCS1_v1_5.new(key).sign(hashed)
verifier = PKCS1_v1_5.new(key.public_key())
self.assertEqual(verifier.verify(hashed, good_signature), True)
# Flip a few bits in the signature
bad_signature = strxor(good_signature, bchr(1) * len(good_signature))
self.assertEqual(verifier.verify(hashed, bad_signature), False)
class PKCS1_All_Hashes_Tests(unittest.TestCase):
def shortDescription(self):
return "Test PKCS#1v1.5 signature in combination with all hashes"
def runTest(self):
key = RSA.generate(1024)
signer = pkcs1_15.new(key)
hash_names = ("MD2", "MD4", "MD5", "RIPEMD160", "SHA1",
"SHA224", "SHA256", "SHA384", "SHA512",
"SHA3_224", "SHA3_256", "SHA3_384", "SHA3_512")
for name in hash_names:
hashed = load_hash_by_name(name).new(b"Test")
signer.sign(hashed)
from Crypto.Hash import BLAKE2b, BLAKE2s
for hash_size in (20, 32, 48, 64):
hashed_b = BLAKE2b.new(digest_bytes=hash_size, data=b"Test")
signer.sign(hashed_b)
for hash_size in (16, 20, 28, 32):
hashed_s = BLAKE2s.new(digest_bytes=hash_size, data=b"Test")
signer.sign(hashed_s)
class TestVectorsWycheproof(unittest.TestCase):
def __init__(self, wycheproof_warnings):
unittest.TestCase.__init__(self)
self._wycheproof_warnings = wycheproof_warnings
self._id = "None"
def setUp(self):
self.tv = []
self.add_tests("rsa_sig_gen_misc_test.json")
self.add_tests("rsa_signature_2048_sha224_test.json")
self.add_tests("rsa_signature_2048_sha256_test.json")
self.add_tests("rsa_signature_2048_sha384_test.json")
self.add_tests("rsa_signature_2048_sha3_224_test.json")
self.add_tests("rsa_signature_2048_sha3_256_test.json")
self.add_tests("rsa_signature_2048_sha3_384_test.json")
self.add_tests("rsa_signature_2048_sha3_512_test.json")
self.add_tests("rsa_signature_2048_sha512_test.json")
self.add_tests("rsa_signature_2048_sha512_224_test.json")
self.add_tests("rsa_signature_2048_sha512_256_test.json")
self.add_tests("rsa_signature_3072_sha256_test.json")
self.add_tests("rsa_signature_3072_sha384_test.json")
self.add_tests("rsa_signature_3072_sha3_256_test.json")
self.add_tests("rsa_signature_3072_sha3_384_test.json")
self.add_tests("rsa_signature_3072_sha3_512_test.json")
self.add_tests("rsa_signature_3072_sha512_test.json")
self.add_tests("rsa_signature_3072_sha512_256_test.json")
self.add_tests("rsa_signature_4096_sha384_test.json")
self.add_tests("rsa_signature_4096_sha512_test.json")
self.add_tests("rsa_signature_4096_sha512_256_test.json")
self.add_tests("rsa_signature_test.json")
def add_tests(self, filename):
def filter_rsa(group):
return RSA.import_key(group['keyPem'])
def filter_sha(group):
hash_name = group['sha']
if hash_name == "SHA-512":
return SHA512
elif hash_name == "SHA-512/224":
return SHA512.new(truncate="224")
elif hash_name == "SHA-512/256":
return SHA512.new(truncate="256")
elif hash_name == "SHA3-512":
return SHA3_512
elif hash_name == "SHA-384":
return SHA384
elif hash_name == "SHA3-384":
return SHA3_384
elif hash_name == "SHA-256":
return SHA256
elif hash_name == "SHA3-256":
return SHA3_256
elif hash_name == "SHA-224":
return SHA224
elif hash_name == "SHA3-224":
return SHA3_224
elif hash_name == "SHA-1":
return SHA1
else:
raise ValueError("Unknown hash algorithm: " + hash_name)
def filter_type(group):
type_name = group['type']
if type_name not in ("RsassaPkcs1Verify", "RsassaPkcs1Generate"):
raise ValueError("Unknown type name " + type_name)
result = load_test_vectors_wycheproof(("Signature", "wycheproof"),
filename,
"Wycheproof PKCS#1v1.5 signature (%s)" % filename,
group_tag={'rsa_key': filter_rsa,
'hash_mod': filter_sha,
'type': filter_type})
return result
def shortDescription(self):
return self._id
def warn(self, tv):
if tv.warning and self._wycheproof_warnings:
import warnings
warnings.warn("Wycheproof warning: %s (%s)" % (self._id, tv.comment))
def test_verify(self, tv):
self._id = "Wycheproof RSA PKCS$#1 Test #" + str(tv.id)
hashed_msg = tv.hash_module.new(tv.msg)
signer = pkcs1_15.new(tv.key)
try:
signature = signer.verify(hashed_msg, tv.sig)
except ValueError as e:
if tv.warning:
return
assert not tv.valid
else:
assert tv.valid
self.warn(tv)
def runTest(self):
for tv in self.tv:
self.test_verify(tv)
def get_tests(config={}):
wycheproof_warnings = config.get('wycheproof_warnings')
tests = []
tests += list_test_cases(FIPS_PKCS1_Verify_Tests)
tests += list_test_cases(FIPS_PKCS1_Sign_Tests)
tests += list_test_cases(PKCS1_15_NoParams)
tests += list_test_cases(PKCS1_Legacy_Module_Tests)
tests += list_test_cases(PKCS1_All_Hashes_Tests)
tests += [ TestVectorsWycheproof(wycheproof_warnings) ]
if config.get('slow_tests'):
tests += list_test_cases(FIPS_PKCS1_Verify_Tests_KAT)
tests += list_test_cases(FIPS_PKCS1_Sign_Tests_KAT)
return tests
if __name__ == '__main__':
suite = lambda: unittest.TestSuite(get_tests())
unittest.main(defaultTest='suite')