| // Copyright 2018 Google Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "tink/subtle/rsa_ssa_pkcs1_sign_boringssl.h" |
| |
| #include <cstdint> |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "absl/status/status.h" |
| #include "absl/strings/escaping.h" |
| #include "openssl/bn.h" |
| #include "openssl/crypto.h" |
| #include "openssl/rsa.h" |
| #include "tink/config/tink_fips.h" |
| #include "tink/internal/rsa_util.h" |
| #include "tink/internal/ssl_unique_ptr.h" |
| #include "tink/subtle/rsa_ssa_pkcs1_verify_boringssl.h" |
| #include "tink/util/test_matchers.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace subtle { |
| namespace { |
| |
| using ::crypto::tink::test::IsOk; |
| using ::crypto::tink::test::StatusIs; |
| using ::testing::IsEmpty; |
| using ::testing::Not; |
| |
| class RsaPkcs1SignBoringsslTest : public ::testing::Test { |
| public: |
| RsaPkcs1SignBoringsslTest() : rsa_f4_(BN_new()) { |
| EXPECT_TRUE(BN_set_word(rsa_f4_.get(), RSA_F4)); |
| EXPECT_THAT( |
| internal::NewRsaKeyPair(/*modulus_size_in_bits=*/2048, rsa_f4_.get(), |
| &private_key_, &public_key_), |
| IsOk()); |
| } |
| |
| protected: |
| internal::SslUniquePtr<BIGNUM> rsa_f4_; |
| internal::RsaPrivateKey private_key_; |
| internal::RsaPublicKey public_key_; |
| }; |
| |
| TEST_F(RsaPkcs1SignBoringsslTest, EncodesPkcs1) { |
| if (IsFipsModeEnabled()) { |
| GTEST_SKIP() << "Test not run in FIPS-only mode"; |
| } |
| |
| internal::RsaSsaPkcs1Params params{/*sig_hash=*/HashType::SHA256}; |
| |
| auto signer_or = RsaSsaPkcs1SignBoringSsl::New(private_key_, params); |
| ASSERT_THAT(signer_or, IsOk()); |
| |
| auto signature_or = signer_or.value()->Sign("testdata"); |
| ASSERT_THAT(signature_or, IsOk()); |
| EXPECT_THAT(signature_or.value(), Not(IsEmpty())); |
| |
| auto verifier_or = RsaSsaPkcs1VerifyBoringSsl::New(public_key_, params); |
| ASSERT_THAT(verifier_or, IsOk()); |
| EXPECT_THAT(verifier_or.value()->Verify(signature_or.value(), "testdata"), |
| IsOk()); |
| } |
| |
| TEST_F(RsaPkcs1SignBoringsslTest, EncodesPkcs1WithSeparateHashes) { |
| if (IsFipsModeEnabled()) { |
| GTEST_SKIP() << "Test not run in FIPS-only mode"; |
| } |
| |
| internal::RsaSsaPkcs1Params params{/*sig_hash=*/HashType::SHA256}; |
| |
| auto signer_or = RsaSsaPkcs1SignBoringSsl::New(private_key_, params); |
| ASSERT_THAT(signer_or, IsOk()); |
| |
| auto signature_or = signer_or.value()->Sign("testdata"); |
| ASSERT_THAT(signature_or, IsOk()); |
| EXPECT_THAT(signature_or.value(), Not(IsEmpty())); |
| |
| auto verifier_or = RsaSsaPkcs1VerifyBoringSsl::New(public_key_, params); |
| ASSERT_THAT(verifier_or, IsOk()); |
| EXPECT_THAT(verifier_or.value()->Verify(signature_or.value(), "testdata"), |
| IsOk()); |
| } |
| |
| TEST_F(RsaPkcs1SignBoringsslTest, RejectsUnsafeHash) { |
| if (IsFipsModeEnabled()) { |
| GTEST_SKIP() << "Test not run in FIPS-only mode"; |
| } |
| |
| internal::RsaSsaPkcs1Params params{/*sig_hash=*/HashType::SHA1}; |
| ASSERT_THAT(RsaSsaPkcs1SignBoringSsl::New(private_key_, params).status(), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST_F(RsaPkcs1SignBoringsslTest, RejectsInvalidCrtParams) { |
| if (IsFipsModeEnabled()) { |
| GTEST_SKIP() << "Test not run in FIPS-only mode"; |
| } |
| |
| internal::RsaSsaPkcs1Params params{/*sig_hash=*/HashType::SHA256}; |
| ASSERT_THAT(private_key_.crt, Not(IsEmpty())); |
| ASSERT_THAT(private_key_.dq, Not(IsEmpty())); |
| ASSERT_THAT(private_key_.dp, Not(IsEmpty())); |
| |
| // Flip a few bits in the CRT parameters; check that creation fails. |
| { |
| internal::RsaPrivateKey key = private_key_; |
| key.crt[0] ^= 0x80; |
| auto signer_or = RsaSsaPkcs1SignBoringSsl::New(key, params); |
| EXPECT_THAT(signer_or.status(), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| { |
| internal::RsaPrivateKey key = private_key_; |
| key.dq[0] ^= 0x08; |
| auto signer_or = RsaSsaPkcs1SignBoringSsl::New(key, params); |
| EXPECT_THAT(signer_or.status(), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| { |
| internal::RsaPrivateKey key = private_key_; |
| key.dp[0] ^= 0x04; |
| auto signer_or = RsaSsaPkcs1SignBoringSsl::New(key, params); |
| EXPECT_THAT(signer_or.status(), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| } |
| |
| // FIPS-only mode test |
| TEST_F(RsaPkcs1SignBoringsslTest, TestFipsFailWithoutBoringCrypto) { |
| if (!IsFipsModeEnabled() || FIPS_mode()) { |
| GTEST_SKIP() |
| << "Test assumes kOnlyUseFips but BoringCrypto is unavailable."; |
| } |
| |
| internal::RsaSsaPkcs1Params params{/*sig_hash=*/HashType::SHA256}; |
| EXPECT_THAT(RsaSsaPkcs1SignBoringSsl::New(private_key_, params).status(), |
| StatusIs(absl::StatusCode::kInternal)); |
| } |
| |
| TEST_F(RsaPkcs1SignBoringsslTest, TestRestrictedFipsModuli) { |
| if (!IsFipsModeEnabled() || !FIPS_mode()) { |
| GTEST_SKIP() << "Test assumes kOnlyUseFips and BoringCrypto."; |
| } |
| |
| internal::RsaPrivateKey private_key; |
| internal::RsaPublicKey public_key; |
| |
| EXPECT_THAT(internal::NewRsaKeyPair(/*modulus_size_in_bits=*/4096, |
| rsa_f4_.get(), &private_key, &public_key), |
| IsOk()); |
| |
| internal::RsaSsaPkcs1Params params{/*sig_hash=*/HashType::SHA256}; |
| EXPECT_THAT(RsaSsaPkcs1SignBoringSsl::New(private_key, params).status(), |
| StatusIs(absl::StatusCode::kInternal)); |
| } |
| |
| TEST_F(RsaPkcs1SignBoringsslTest, TestAllowedFipsModuli) { |
| if (!IsFipsModeEnabled() || !FIPS_mode()) { |
| GTEST_SKIP() << "Test assumes kOnlyUseFips and BoringCrypto."; |
| } |
| |
| internal::RsaPrivateKey private_key; |
| internal::RsaPublicKey public_key; |
| |
| EXPECT_THAT(internal::NewRsaKeyPair(/*modulus_size_in_bits=*/3072, |
| rsa_f4_.get(), &private_key, &public_key), |
| IsOk()); |
| |
| internal::RsaSsaPkcs1Params params{/*sig_hash=*/HashType::SHA256}; |
| EXPECT_THAT(RsaSsaPkcs1SignBoringSsl::New(private_key, params).status(), |
| IsOk()); |
| } |
| |
| } // namespace |
| } // namespace subtle |
| } // namespace tink |
| } // namespace crypto |