Bug 1755092 - rework signature verification in mozilla::pkix r=jschanck

The initial implementation of mozilla::pkix split signature verification into
two steps: digesting the data that had been signed and then verifying that
digest. This separation added complexity that was hidden by the VFY_* APIs.
However, those APIs are in need of improvements. This patch avoids the VFY_*
APIs as well as the additional complexity by removing the separate digest step
and using the PK11_Verify* APIs directly.

Differential Revision: https://phabricator.services.mozilla.com/D138605

4 files changed, 639 insertions, 10 deletions

diff --git a/gtests/mozpkix_gtest/mozpkix_gtest.gyp b/gtests/mozpkix_gtest/mozpkix_gtest.gyp
index 80c348888..49cf635a1 100644
--- a/gtests/mozpkix_gtest/mozpkix_gtest.gyp
+++ b/gtests/mozpkix_gtest/mozpkix_gtest.gyp
@@ -28,6 +28,7 @@
         'pkixder_universal_types_tests.cpp',
         'pkixgtest.cpp',
         'pkixnames_tests.cpp',
+        'pkixnss_tests.cpp',
         'pkixocsp_CreateEncodedOCSPRequest_tests.cpp',
         'pkixocsp_VerifyEncodedOCSPResponse.cpp',
       ],
diff --git a/gtests/mozpkix_gtest/pkixder_pki_types_tests.cpp b/gtests/mozpkix_gtest/pkixder_pki_types_tests.cpp
index 977b6b42d..bdde10ebb 100644
--- a/gtests/mozpkix_gtest/pkixder_pki_types_tests.cpp
+++ b/gtests/mozpkix_gtest/pkixder_pki_types_tests.cpp
@@ -32,6 +32,7 @@
 
 using namespace mozilla::pkix;
 using namespace mozilla::pkix::der;
+using namespace mozilla::pkix::test;
 
 class pkixder_pki_types_tests : public ::testing::Test { };
 
@@ -478,3 +479,169 @@ INSTANTIATE_TEST_SUITE_P(
   pkixder_SignatureAlgorithmIdentifier_Invalid,
   pkixder_SignatureAlgorithmIdentifier_Invalid,
   testing::ValuesIn(INVALID_SIGNATURE_ALGORITHM_VALUE_TEST_INFO));
+
+struct EncodedECDSASignatureValidParams {
+  std::vector<uint8_t> signature;
+  std::vector<uint8_t> rExpected;
+  std::vector<uint8_t> sExpected;
+};
+
+::std::ostream& operator<<(::std::ostream& os, const EncodedECDSASignatureValidParams&)
+{
+  return os << "TODO (bug 1318770)";
+}
+
+static const EncodedECDSASignatureValidParams
+  ENCODEDECDSASIGNATURE_VALID_PARAMS[] =
+{
+  {
+    { 0x30, 0x07, // SEQUENCE
+        0x02, 0x01, 0x01, // INTEGER (0x01)
+        0x02, 0x02, 0x05, 0x06 }, // INTEGER ([0x05, 0x06])
+    { 0x01 },
+    { 0x05, 0x06 },
+  },
+  {
+    { 0x30, 0x08, // SEQUENCE
+        0x02, 0x03, 0x00, 0xb7, 0x0a, // INTEGER ([0xb7, 0x0a]) highest bit set
+        0x02, 0x01, 0x02 }, // INTEGER (0x02)
+    { 0xb7, 0x0a },
+    { 0x02 },
+  },
+  {
+    { 0x30, 0x09, // SEQUENCE
+        0x02, 0x03, 0x23, 0x00, 0x55, // INTEGER ([0x23, 0x00, 0x55])
+        0x02, 0x02, 0x00, 0xf0 }, // INTEGER (0xf0) highest bit set
+    { 0x23, 0x00, 0x55 },
+    { 0xf0 },
+  },
+  {
+    { 0x30, 0x09, // SEQUENCE
+        0x02, 0x03, 0x00, 0x93, 0x10, // INTEGER ([0x93, 0xl0]) highest bit set
+        0x02, 0x02, 0x00, 0xcf }, // INTEGER (0xcf) highest bit set
+    { 0x93, 0x10, },
+    { 0xcf },
+  },
+};
+
+class pkixder_ECDSASigValue_valid
+  : public ::testing::Test
+  , public ::testing::WithParamInterface<EncodedECDSASignatureValidParams>
+{
+};
+
+
+TEST_P(pkixder_ECDSASigValue_valid, pkixder_ECDSASigValue_valid)
+{
+  const EncodedECDSASignatureValidParams& params(GetParam());
+
+  Input signature;
+  ASSERT_EQ(Success,
+            signature.Init(params.signature.data(), params.signature.size()));
+  Input r;
+  Input s;
+  ASSERT_EQ(Success, ECDSASigValue(signature, r, s));
+
+  Input rExpected;
+  ASSERT_EQ(Success,
+            rExpected.Init(params.rExpected.data(), params.rExpected.size()));
+  ASSERT_TRUE(InputsAreEqual(r, rExpected));
+
+  Input sExpected;
+  ASSERT_EQ(Success,
+            sExpected.Init(params.sExpected.data(), params.sExpected.size()));
+  ASSERT_TRUE(InputsAreEqual(s, sExpected));
+}
+
+INSTANTIATE_TEST_SUITE_P(pkixder_ECDSASigValue_valid,
+    pkixder_ECDSASigValue_valid,
+    testing::ValuesIn(ENCODEDECDSASIGNATURE_VALID_PARAMS));
+
+struct EncodedECDSASignatureInvalidParams {
+  std::vector<uint8_t> signature;
+  Result expectedResult;
+};
+
+::std::ostream& operator<<(::std::ostream& os, const EncodedECDSASignatureInvalidParams&)
+{
+  return os << "TODO (bug 1318770)";
+}
+
+static const EncodedECDSASignatureInvalidParams
+  ENCODEDECDSASIGNATURE_INVALID_PARAMS[] =
+{
+  {
+    { 0x05, 0x00 }, // not a SEQUENCE
+    Result::ERROR_BAD_DER
+  },
+  {
+    { 0x30, 0x00 }, // empty SEQUENCE
+    Result::ERROR_BAD_DER
+  },
+  {
+    { 0x30, 0x06,
+        0x05, 0x01, 0x01, // NULL, not INTEGER
+        0x02, 0x01, 0x01 },
+    Result::ERROR_BAD_DER
+  },
+  {
+    { 0x30, 0x08,
+        0x02, 0x01, 0x01,
+        0x02, 0x01, 0x01,
+        0x05, 0x00 }, // trailing data in SEQUENCE
+    Result::ERROR_BAD_DER
+  },
+  { { 0x30, 0x06,
+        0x02, 0x01, 0x01,
+        0x02, 0x01, 0x01,
+      0x05, 0x00 }, // trailing data after SEQUENCE
+    Result::ERROR_BAD_DER
+  },
+  {
+    { 0x30, 0x07,
+        0x02, 0x01, 0x00, // not a positive INTEGER
+        0x02, 0x02, 0x0f, 0x02 },
+    Result::ERROR_INVALID_INTEGER_ENCODING
+  },
+  {
+    { 0x30, 0x08,
+        0x02, 0x02, 0x00, 0x01, // unnecessary zero padding
+        0x02, 0x02, 0x0f, 0x02 },
+    Result::ERROR_INVALID_INTEGER_ENCODING
+  },
+  {
+    { 0x30, 0x07,
+        0x02, 0x01, 0x01,
+        0x02, 0x02, 0xff, 0x02 }, // negative INTEGER
+    Result::ERROR_INVALID_INTEGER_ENCODING
+  },
+  {
+    { 0x30, 0x06,
+        0x02, 0x01, 0x01,
+        0x02, 0x01, 0xf0 }, // negative INTEGER
+    Result::ERROR_INVALID_INTEGER_ENCODING
+  },
+};
+
+class pkixder_ECDSASigValue_invalid
+  : public ::testing::Test
+  , public ::testing::WithParamInterface<EncodedECDSASignatureInvalidParams>
+{
+};
+
+
+TEST_P(pkixder_ECDSASigValue_invalid, pkixder_ECDSASigValue_invalid)
+{
+  const EncodedECDSASignatureInvalidParams& params(GetParam());
+
+  Input signature;
+  ASSERT_EQ(Success,
+            signature.Init(params.signature.data(), params.signature.size()));
+  Input r;
+  Input s;
+  ASSERT_EQ(params.expectedResult, ECDSASigValue(signature, r, s));
+}
+
+INSTANTIATE_TEST_SUITE_P(
+  pkixder_ECDSASigValue_invalid, pkixder_ECDSASigValue_invalid,
+  testing::ValuesIn(ENCODEDECDSASIGNATURE_INVALID_PARAMS));
diff --git a/gtests/mozpkix_gtest/pkixgtest.h b/gtests/mozpkix_gtest/pkixgtest.h
index 777f123ca..92f69350f 100644
--- a/gtests/mozpkix_gtest/pkixgtest.h
+++ b/gtests/mozpkix_gtest/pkixgtest.h
@@ -135,9 +135,9 @@ class EverythingFailsByDefaultTrustDomain : public TrustDomain {
                       Result::FATAL_ERROR_LIBRARY_FAILURE);
   }
 
-  Result VerifyECDSASignedDigest(const SignedDigest&, Input) override {
+  Result VerifyECDSASignedData(Input, DigestAlgorithm, Input, Input) override {
     ADD_FAILURE();
-    return NotReached("VerifyECDSASignedDigest should not be called",
+    return NotReached("VerifyECDSASignedData should not be called",
                       Result::FATAL_ERROR_LIBRARY_FAILURE);
   }
 
@@ -148,9 +148,10 @@ class EverythingFailsByDefaultTrustDomain : public TrustDomain {
                       Result::FATAL_ERROR_LIBRARY_FAILURE);
   }
 
-  Result VerifyRSAPKCS1SignedDigest(const SignedDigest&, Input) override {
+  Result VerifyRSAPKCS1SignedData(Input, DigestAlgorithm, Input,
+                                  Input) override {
     ADD_FAILURE();
-    return NotReached("VerifyRSAPKCS1SignedDigest should not be called",
+    return NotReached("VerifyRSAPKCS1SignedData should not be called",
                       Result::FATAL_ERROR_LIBRARY_FAILURE);
   }
 
@@ -187,9 +188,11 @@ class DefaultCryptoTrustDomain : public EverythingFailsByDefaultTrustDomain {
     return Success;
   }
 
-  Result VerifyECDSASignedDigest(const SignedDigest& signedDigest,
-                                 Input subjectPublicKeyInfo) override {
-    return TestVerifyECDSASignedDigest(signedDigest, subjectPublicKeyInfo);
+  Result VerifyECDSASignedData(Input data, DigestAlgorithm digestAlgorithm,
+                               Input signature,
+                               Input subjectPublicKeyInfo) override {
+    return TestVerifyECDSASignedData(data, digestAlgorithm, signature,
+                                     subjectPublicKeyInfo);
   }
 
   Result CheckRSAPublicKeyModulusSizeInBits(EndEntityOrCA,
@@ -197,9 +200,11 @@ class DefaultCryptoTrustDomain : public EverythingFailsByDefaultTrustDomain {
     return Success;
   }
 
-  Result VerifyRSAPKCS1SignedDigest(const SignedDigest& signedDigest,
-                                    Input subjectPublicKeyInfo) override {
-    return TestVerifyRSAPKCS1SignedDigest(signedDigest, subjectPublicKeyInfo);
+  Result VerifyRSAPKCS1SignedData(Input data, DigestAlgorithm digestAlgorithm,
+                                  Input signature,
+                                  Input subjectPublicKeyInfo) override {
+    return TestVerifyRSAPKCS1SignedData(data, digestAlgorithm, signature,
+                                        subjectPublicKeyInfo);
   }
 
   Result CheckValidityIsAcceptable(Time, Time, EndEntityOrCA,
diff --git a/gtests/mozpkix_gtest/pkixnss_tests.cpp b/gtests/mozpkix_gtest/pkixnss_tests.cpp
new file mode 100644
index 000000000..7a556284a
--- /dev/null
+++ b/gtests/mozpkix_gtest/pkixnss_tests.cpp
@@ -0,0 +1,456 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This code is made available to you under your choice of the following sets
+ * of licensing terms:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+/* Copyright 2015 Mozilla Contributors
+ *
+ * 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 "pkixgtest.h"
+
+#include "mozpkix/pkixder.h"
+#include "mozpkix/pkixnss.h"
+
+using namespace mozilla::pkix;
+using namespace mozilla::pkix::der;
+using namespace mozilla::pkix::test;
+
+struct VerifySignedDataNSSTestParams
+{
+  ByteString data;
+  DigestAlgorithm digestAlgorithm;
+  ByteString signature;
+  PublicKeyAlgorithm publicKeyAlgorithm;
+  ByteString subjectPublicKeyInfo;
+  Result expectedResult;
+};
+
+::std::ostream& operator<<(::std::ostream& os,
+                           const VerifySignedDataNSSTestParams&)
+{
+  return os << "TODO (bug 1318770)";
+}
+
+#define BS(s) ByteString(s, MOZILLA_PKIX_ARRAY_LENGTH(s))
+
+static const uint8_t kData[] = {
+  0x53, 0x70, 0x68, 0x79, 0x6e, 0x78, 0x20, 0x6f, 0x66, 0x20, 0x62, 0x6c,
+  0x61, 0x63, 0x6b, 0x20, 0x71, 0x75, 0x61, 0x72, 0x74, 0x7a, 0x2c, 0x20,
+  0x6a, 0x75, 0x64, 0x67, 0x65, 0x20, 0x6d, 0x79, 0x20, 0x76, 0x6f, 0x77,
+  0x2e
+};
+
+static const uint8_t kRsaSubjectPublicKeyInfo[] = {
+  0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86,
+  0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00,
+  0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xdb, 0x75, 0x02,
+  0x7b, 0xeb, 0xf7, 0x3b, 0x31, 0x03, 0x71, 0x77, 0x34, 0x88, 0x8f, 0xb2,
+  0x0d, 0xa6, 0xbe, 0x7d, 0xa7, 0xdd, 0xac, 0x0e, 0x99, 0x50, 0x46, 0x69,
+  0x90, 0xe6, 0x7c, 0x3a, 0xa6, 0xf9, 0x3e, 0x02, 0x15, 0x3c, 0xf7, 0xb9,
+  0xf4, 0xab, 0x3d, 0x54, 0x2c, 0x0d, 0x84, 0x94, 0x37, 0x95, 0xbc, 0x2b,
+  0x56, 0x05, 0x00, 0xfa, 0xa2, 0x08, 0xf9, 0xcd, 0xc3, 0x2b, 0x9a, 0x58,
+  0x80, 0x11, 0x49, 0xe0, 0x69, 0xf9, 0x81, 0x08, 0x52, 0x75, 0xb4, 0xc1,
+  0x94, 0xa2, 0x67, 0x22, 0x5b, 0xfb, 0xe4, 0x74, 0xaa, 0x24, 0xb7, 0xa3,
+  0x5e, 0x2c, 0x6b, 0xda, 0x20, 0x09, 0x5a, 0x5e, 0x4f, 0x95, 0xe8, 0x24,
+  0x71, 0x64, 0x65, 0x29, 0x2c, 0x44, 0xb5, 0x17, 0xec, 0xe4, 0x68, 0xc3,
+  0x69, 0x6b, 0x53, 0x6d, 0xa1, 0xa0, 0xb1, 0x74, 0xe2, 0x28, 0x03, 0xda,
+  0x20, 0xca, 0xa4, 0x45, 0x1e, 0xf6, 0xab, 0xc7, 0xe9, 0xcb, 0xe3, 0x9a,
+  0x16, 0x34, 0x8f, 0xd7, 0xf3, 0x66, 0x74, 0xea, 0xe7, 0x32, 0xf3, 0xd2,
+  0x55, 0x6c, 0x8f, 0x38, 0xb8, 0x1b, 0x38, 0x08, 0x4c, 0x1f, 0x41, 0x74,
+  0x35, 0x9e, 0x2d, 0x29, 0xed, 0x72, 0xe3, 0xda, 0x18, 0x01, 0xf4, 0x5f,
+  0x8d, 0x9d, 0x72, 0x13, 0x18, 0x09, 0x1f, 0xbe, 0xb0, 0x20, 0x90, 0xc4,
+  0x3d, 0x2c, 0x4f, 0xf2, 0xdc, 0x99, 0x8a, 0xae, 0x02, 0xd6, 0xef, 0x5a,
+  0x88, 0x08, 0x15, 0x85, 0xdd, 0xaa, 0xce, 0xe4, 0x4b, 0x3f, 0xe9, 0xf4,
+  0xfa, 0x54, 0xde, 0xb0, 0x30, 0xdf, 0x8f, 0x14, 0x2c, 0x49, 0x69, 0x24,
+  0xe4, 0xa9, 0xeb, 0x62, 0x15, 0xf8, 0x8a, 0xd8, 0xe4, 0x8a, 0x99, 0x2b,
+  0xdb, 0x68, 0x8b, 0x2a, 0x61, 0xbd, 0xc0, 0x57, 0xff, 0x5f, 0xee, 0xe9,
+  0xac, 0x06, 0x77, 0x13, 0x7b, 0x2e, 0xd1, 0x76, 0x6c, 0xe8, 0x6c, 0x73,
+  0x1f, 0x02, 0x03, 0x01, 0x00, 0x01
+};
+
+// Use `openssl dgst -binary -sha1` to obtain the hash of the data, and then
+// `openssl pkeyutl` with `-pkeyopt rsa_padding_mode:pkcs1` and `-pkeyopt
+// digest:sha1` to create the signature.
+static const uint8_t kRsaPkcs1Sha1Signature[] = {
+  0x6c, 0x11, 0x88, 0xc9, 0x6b, 0x06, 0xf2, 0x55, 0x67, 0xa1, 0x30, 0x3b,
+  0x0a, 0xf5, 0x20, 0x84, 0xd7, 0x3c, 0x44, 0xc8, 0x25, 0x67, 0x58, 0x2a,
+  0x9d, 0x7b, 0xbc, 0x92, 0x01, 0xbd, 0x4c, 0x11, 0x51, 0x2f, 0x18, 0x85,
+  0xd5, 0xef, 0xd5, 0x35, 0x1e, 0x12, 0x89, 0x0e, 0x36, 0xaa, 0x86, 0xb8,
+  0xaf, 0x81, 0x5b, 0xf2, 0x65, 0xde, 0x07, 0xb9, 0xbc, 0x1a, 0x22, 0xf1,
+  0xac, 0x8e, 0x95, 0x5d, 0x3d, 0x5b, 0x15, 0x92, 0x12, 0x07, 0x24, 0x14,
+  0x89, 0x5a, 0x00, 0xfe, 0x0c, 0xf3, 0x99, 0x0b, 0x83, 0x3f, 0x09, 0x2c,
+  0x82, 0x06, 0x84, 0x21, 0xd3, 0x79, 0xc7, 0xac, 0x16, 0x89, 0x2e, 0x81,
+  0xb4, 0x29, 0x88, 0x08, 0x26, 0x30, 0x79, 0x40, 0x96, 0xa7, 0xd9, 0x5c,
+  0x67, 0xdb, 0x94, 0x77, 0x20, 0xcb, 0x07, 0x55, 0xa7, 0x37, 0xb4, 0xf9,
+  0xcc, 0x9a, 0x9a, 0x22, 0x42, 0xb5, 0xce, 0xcc, 0x0f, 0x13, 0x54, 0x2f,
+  0x1d, 0x7f, 0xa9, 0xb7, 0x7a, 0x06, 0x6f, 0x15, 0x16, 0xe2, 0x30, 0x5b,
+  0xe0, 0x84, 0xe6, 0x28, 0x65, 0x53, 0x6a, 0xab, 0x67, 0x85, 0x53, 0x1b,
+  0xaf, 0x9f, 0x9b, 0x60, 0x18, 0xb8, 0xf1, 0xd5, 0x53, 0xc9, 0x48, 0x21,
+  0xd9, 0x81, 0xbd, 0xeb, 0x44, 0x82, 0x3c, 0x66, 0x91, 0x63, 0xa0, 0x00,
+  0x9b, 0x23, 0x0a, 0xef, 0xfe, 0x2d, 0x17, 0xd5, 0x99, 0x64, 0x43, 0x32,
+  0x58, 0xae, 0x96, 0x36, 0x5e, 0x80, 0x7c, 0xb7, 0x01, 0x44, 0x06, 0x19,
+  0xba, 0x52, 0x30, 0xc9, 0x66, 0xb4, 0x4e, 0x7e, 0xeb, 0xe2, 0x97, 0x37,
+  0x0c, 0xbd, 0xa6, 0xe6, 0x20, 0x05, 0x47, 0x79, 0x36, 0x56, 0x48, 0x9d,
+  0x91, 0x7e, 0x61, 0x67, 0xbd, 0xc3, 0x12, 0xa8, 0x2a, 0xf0, 0xfc, 0xee,
+  0x78, 0x18, 0x59, 0x7e, 0xd6, 0xd1, 0x55, 0xee, 0xf5, 0xaf, 0xb8, 0xbd,
+  0x16, 0xd8, 0x01, 0xca
+};
+
+// Similarly as above, but with sha256.
+static const uint8_t kRsaPkcs1Sha256Signature[] = {
+  0x9c, 0xbd, 0x2d, 0x6c, 0x4a, 0xe2, 0x47, 0xc9, 0xe2, 0xd9, 0x48, 0xa6,
+  0x3a, 0x3d, 0x43, 0xf5, 0x5e, 0xd0, 0x11, 0x9a, 0xab, 0x79, 0x71, 0xb6,
+  0x97, 0x7c, 0x6a, 0xc7, 0x96, 0x29, 0x21, 0xbd, 0xe2, 0xe7, 0xee, 0x01,
+  0x1b, 0x0f, 0xd1, 0x31, 0xeb, 0xa6, 0xbe, 0xec, 0xc0, 0x64, 0x63, 0xf4,
+  0x71, 0xd4, 0x7b, 0x1b, 0x02, 0xba, 0xae, 0xf3, 0x7a, 0x81, 0x5c, 0x78,
+  0xd5, 0x75, 0xee, 0x9a, 0x4a, 0x97, 0x64, 0x6a, 0x75, 0x12, 0xa3, 0xca,
+  0xe5, 0x2f, 0x40, 0x43, 0x1e, 0xe0, 0x5c, 0xa2, 0x2f, 0x3e, 0xf0, 0xdd,
+  0x5e, 0xdc, 0x57, 0x3a, 0xfc, 0x35, 0x84, 0x1d, 0x79, 0x2e, 0x82, 0xeb,
+  0x0d, 0xef, 0xdf, 0x12, 0x96, 0xe0, 0x1f, 0xe8, 0x16, 0xe0, 0x6c, 0xf9,
+  0xf4, 0x06, 0x6c, 0x51, 0x40, 0x3d, 0x23, 0xac, 0x24, 0x9c, 0x6c, 0xe6,
+  0x1a, 0x84, 0x89, 0x8c, 0x6d, 0xbe, 0xc0, 0x42, 0x70, 0x9c, 0xdf, 0xcb,
+  0x70, 0x7e, 0x4f, 0xbc, 0x87, 0x2b, 0xc0, 0xb7, 0xcf, 0x21, 0xfe, 0x1d,
+  0x2e, 0x38, 0x00, 0xe4, 0xaf, 0x88, 0x44, 0x16, 0x28, 0x38, 0xf7, 0x4e,
+  0x07, 0xf6, 0x82, 0x20, 0x96, 0x4c, 0x33, 0x15, 0xb6, 0xb1, 0x4b, 0x08,
+  0x4e, 0x18, 0x3a, 0xaa, 0x2f, 0x69, 0xbe, 0x5c, 0x62, 0x1e, 0xf1, 0x02,
+  0xa8, 0xa3, 0x54, 0x85, 0x72, 0xd0, 0x39, 0x4d, 0xa8, 0xec, 0xe2, 0x2e,
+  0xb8, 0x4d, 0x93, 0xd6, 0x91, 0x84, 0x26, 0x09, 0xf0, 0x95, 0x37, 0x9f,
+  0x28, 0x0e, 0x93, 0xbe, 0x71, 0x4c, 0xb7, 0xf8, 0xc6, 0xa7, 0x40, 0x9e,
+  0xf4, 0xe2, 0x6a, 0x1c, 0xd7, 0x87, 0xa5, 0x0a, 0xf1, 0xc4, 0x1b, 0x85,
+  0x75, 0x3b, 0x23, 0x69, 0xca, 0x20, 0x14, 0x8f, 0x56, 0x28, 0xa3, 0x9f,
+  0xd8, 0xda, 0xd8, 0xff, 0x54, 0x1b, 0x2b, 0x40, 0xa1, 0x04, 0x63, 0xd9,
+  0x36, 0x64, 0x98, 0x78
+};
+
+// As above.
+static const uint8_t kRsaPkcs1Sha384Signature[] = {
+  0xc4, 0x63, 0x51, 0x52, 0x13, 0x87, 0x56, 0x43, 0x57, 0x76, 0xf9, 0x19,
+  0x0b, 0x12, 0xbc, 0xe3, 0x67, 0x4b, 0x7e, 0xed, 0xb4, 0xb3, 0xc9, 0xe5,
+  0xa7, 0xa7, 0x00, 0x73, 0x1a, 0x58, 0x1a, 0xf0, 0x5b, 0xe2, 0xe3, 0x9b,
+  0xe4, 0xb1, 0x0a, 0x7b, 0xaf, 0x1d, 0x5a, 0x58, 0x99, 0xa2, 0xa4, 0x61,
+  0x92, 0x13, 0x6c, 0xb7, 0x2a, 0xdb, 0xdd, 0x3e, 0xc9, 0xe5, 0x2a, 0x60,
+  0x5d, 0xf2, 0x0a, 0x57, 0x5a, 0x65, 0x3d, 0xd1, 0x5e, 0xc1, 0x5b, 0x47,
+  0xa9, 0x86, 0x56, 0x08, 0x05, 0xee, 0x08, 0xf9, 0x35, 0x4a, 0x46, 0xa5,
+  0x6a, 0x23, 0x01, 0x6d, 0xc3, 0x89, 0x1f, 0x26, 0x2e, 0x44, 0xa8, 0x50,
+  0x84, 0x9b, 0x5d, 0x33, 0x5f, 0xf2, 0x6b, 0xc5, 0xdb, 0x5a, 0xcd, 0xec,
+  0xd4, 0xd2, 0x16, 0x79, 0x8c, 0x4c, 0x78, 0x9a, 0xf0, 0x66, 0x19, 0xc7,
+  0x45, 0x97, 0x15, 0x22, 0x9b, 0xad, 0xe1, 0xda, 0x1a, 0x68, 0x8f, 0xde,
+  0x9c, 0x11, 0xb9, 0x63, 0xeb, 0x48, 0x0d, 0xd6, 0xb7, 0x47, 0x61, 0xd4,
+  0x19, 0x12, 0x12, 0x23, 0x5c, 0x86, 0x15, 0x87, 0x83, 0x32, 0x11, 0xb3,
+  0x8e, 0xdb, 0x64, 0x54, 0x4e, 0xf5, 0x17, 0xf9, 0x2c, 0xa2, 0xb8, 0x85,
+  0x3b, 0x60, 0x75, 0xb5, 0x80, 0xb5, 0x75, 0x5a, 0xf3, 0xf2, 0xdd, 0xef,
+  0xf0, 0x62, 0x14, 0x7e, 0xba, 0x7b, 0x9b, 0xf6, 0x4a, 0x67, 0x71, 0xa1,
+  0x38, 0x05, 0xfb, 0x1d, 0xeb, 0xd7, 0x7c, 0x51, 0xdd, 0xf2, 0x06, 0x1b,
+  0x8f, 0xfe, 0x31, 0x9f, 0xe7, 0xf9, 0xf4, 0xd7, 0x73, 0x26, 0x4f, 0xc3,
+  0x8e, 0x33, 0x3c, 0x08, 0x5b, 0xfa, 0x40, 0xc5, 0xe6, 0xe9, 0x9c, 0x57,
+  0x8b, 0x6f, 0x30, 0xd3, 0x09, 0x5f, 0xe9, 0x87, 0xd6, 0xb6, 0xa1, 0xd6,
+  0x36, 0xf1, 0xda, 0x45, 0x8c, 0xc0, 0x4a, 0x7f, 0xb4, 0xe5, 0x74, 0xab,
+  0x69, 0x82, 0x19, 0x5f
+};
+
+static const uint8_t kRsaPkcs1Sha512Signature[] = {
+  0x91, 0x68, 0x2a, 0x91, 0xce, 0xab, 0x57, 0xd2, 0x60, 0x2d, 0x2f, 0xee,
+  0x2b, 0x28, 0xc8, 0xa7, 0xe8, 0x2e, 0x41, 0xf8, 0x48, 0x92, 0xb4, 0x1b,
+  0xbb, 0x89, 0x54, 0x5d, 0xea, 0x9f, 0xa1, 0x58, 0x23, 0x4d, 0x73, 0xe6,
+  0x4f, 0x88, 0x45, 0x7c, 0xa0, 0x06, 0x3e, 0x8e, 0x29, 0xca, 0xdd, 0xc4,
+  0x9a, 0x8a, 0x45, 0xbb, 0xad, 0x61, 0x4c, 0x4c, 0x1f, 0xd2, 0x67, 0xb0,
+  0x8d, 0x1f, 0x11, 0x3f, 0x74, 0x67, 0x66, 0x3c, 0x65, 0xf5, 0xd8, 0xd8,
+  0xcc, 0x2e, 0x66, 0x1f, 0xa9, 0x6f, 0x2e, 0x60, 0x28, 0x74, 0x92, 0xb7,
+  0x50, 0x16, 0x8c, 0x96, 0xb2, 0xf4, 0x20, 0xfb, 0xa9, 0x14, 0xd3, 0x12,
+  0xcf, 0x35, 0xef, 0x7c, 0x80, 0xf8, 0x70, 0x9f, 0x8d, 0x7f, 0x66, 0x5f,
+  0x94, 0xeb, 0xd9, 0xbb, 0xc3, 0x54, 0x3d, 0x9d, 0x54, 0xef, 0xb1, 0x23,
+  0xe0, 0x6d, 0x02, 0x96, 0xa9, 0x2b, 0x76, 0xd0, 0x88, 0x6b, 0x64, 0x39,
+  0x15, 0x11, 0xba, 0x9a, 0x61, 0x72, 0x16, 0xba, 0x6e, 0x17, 0xf7, 0xc8,
+  0xe8, 0xb2, 0x47, 0x31, 0xc5, 0x48, 0x1d, 0x58, 0x80, 0x34, 0x07, 0x30,
+  0x8f, 0x05, 0xc4, 0x26, 0x7e, 0x70, 0x78, 0x43, 0xc1, 0x13, 0xe5, 0x09,
+  0x4e, 0x68, 0xc1, 0x8d, 0x34, 0xa1, 0xd5, 0x68, 0xa2, 0xfe, 0x73, 0x4a,
+  0x54, 0x05, 0x1b, 0xc0, 0xb3, 0x72, 0xe2, 0xab, 0x51, 0x71, 0xa7, 0xaf,
+  0x5c, 0x95, 0xfb, 0x65, 0xe0, 0xb0, 0x60, 0x0c, 0xd3, 0x23, 0xa2, 0x0f,
+  0x0d, 0xed, 0xd9, 0x87, 0xb4, 0x96, 0x03, 0xd8, 0xfd, 0x80, 0xa2, 0xa1,
+  0xc1, 0x36, 0xb3, 0x47, 0x05, 0xd1, 0x6e, 0xd2, 0x81, 0x16, 0xe4, 0x63,
+  0x26, 0xf9, 0x96, 0x55, 0x37, 0x18, 0x4f, 0x2b, 0x7e, 0x1c, 0xd9, 0xba,
+  0x4f, 0xde, 0x4d, 0x61, 0xc4, 0xd5, 0x7c, 0xe3, 0xa3, 0x21, 0xe8, 0xae,
+  0xc2, 0xe9, 0x62, 0x07
+};
+
+static const uint8_t kEC256SubjectPublicKeyInfo[] = {
+  0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02,
+  0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03,
+  0x42, 0x00, 0x04, 0x6d, 0xd3, 0xc0, 0x54, 0xc6, 0x33, 0xd3, 0xff, 0x4a,
+  0x43, 0x0c, 0x3a, 0x70, 0xdb, 0x97, 0xf6, 0xc9, 0x68, 0xa0, 0xb1, 0xb9,
+  0x6e, 0x15, 0x20, 0x80, 0x50, 0x6f, 0x37, 0x8f, 0xcc, 0xe3, 0x47, 0x96,
+  0x2c, 0x5d, 0xb8, 0x76, 0x8e, 0x67, 0x19, 0x1c, 0xc7, 0x64, 0xb4, 0xd5,
+  0xda, 0xa6, 0x4d, 0xc5, 0x3d, 0xe6, 0xa7, 0xb3, 0xb0, 0x41, 0xfb, 0x29,
+  0xb4, 0x2f, 0xe8, 0x72, 0xeb, 0xfb, 0xfe
+};
+
+// Similar to above, but without the RSA padding mode option.
+static const uint8_t kEC256Sha1Signature[] = {
+  0x30, 0x46, 0x02, 0x21, 0x00, 0xa7, 0x66, 0xd0, 0x2c, 0x3e, 0x2c, 0x06,
+  0x28, 0x84, 0x3f, 0x59, 0xe7, 0x21, 0x44, 0x7d, 0x5a, 0xca, 0xd6, 0xd5,
+  0xe8, 0x7d, 0x0a, 0xc5, 0x26, 0x99, 0x93, 0x43, 0xf1, 0x7d, 0x07, 0x08,
+  0xdb, 0x02, 0x21, 0x00, 0xfc, 0x02, 0xea, 0xcb, 0x3b, 0x7e, 0xd3, 0x2e,
+  0x86, 0x09, 0x18, 0x1a, 0x46, 0x4b, 0x98, 0xfa, 0x7c, 0x4c, 0x2f, 0xf8,
+  0x6e, 0xf7, 0x42, 0x1e, 0x5d, 0x73, 0x0b, 0x27, 0xbf, 0xd7, 0x43, 0xeb
+};
+
+static const uint8_t kEC256Signature[] = {
+  0x30, 0x45, 0x02, 0x21, 0x00, 0xfa, 0x47, 0x24, 0x2e, 0xc0, 0x01, 0x6c,
+  0x31, 0xca, 0x75, 0x12, 0xa4, 0x02, 0x78, 0x0d, 0xc6, 0x75, 0x30, 0x1f,
+  0x31, 0xec, 0xc1, 0xa1, 0x1c, 0xc9, 0x3e, 0xcd, 0xa5, 0x69, 0xe2, 0x06,
+  0x61, 0x02, 0x20, 0x7f, 0x94, 0x6e, 0x60, 0x2e, 0xdd, 0x06, 0xa6, 0xd6,
+  0x90, 0x74, 0x36, 0x4f, 0xf4, 0xc5, 0x80, 0x8f, 0xf6, 0xf9, 0x3b, 0x6c,
+  0xee, 0x28, 0x94, 0x93, 0xce, 0xff, 0x1e, 0xfc, 0x84, 0x10, 0x65
+};
+
+static const uint8_t kEC384SubjectPublicKeyInfo[] = {
+  0x30, 0x76, 0x30, 0x10, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02,
+  0x01, 0x06, 0x05, 0x2b, 0x81, 0x04, 0x00, 0x22, 0x03, 0x62, 0x00, 0x04,
+  0x6c, 0x7a, 0x7b, 0x3f, 0x85, 0x0d, 0x04, 0x8d, 0x8c, 0x90, 0x0a, 0x9e,
+  0x42, 0x54, 0xfa, 0x64, 0x78, 0xd3, 0x08, 0x91, 0xe0, 0xaa, 0xc1, 0x03,
+  0x0c, 0x6c, 0xf1, 0x8c, 0xa6, 0x32, 0x9d, 0x57, 0x10, 0x38, 0xf2, 0xee,
+  0x27, 0x1c, 0xa8, 0x11, 0xd0, 0x1c, 0x50, 0x24, 0xd9, 0x15, 0x17, 0x3c,
+  0xe8, 0x29, 0x67, 0x4b, 0x06, 0xe3, 0x89, 0x52, 0x62, 0x0f, 0xd6, 0x12,
+  0x95, 0x52, 0x21, 0x3e, 0x5d, 0x7b, 0x5b, 0x04, 0xdc, 0xa1, 0x49, 0x51,
+  0xf0, 0xed, 0x35, 0x6b, 0x1c, 0xdd, 0x09, 0x8f, 0xdf, 0x1e, 0x0a, 0x39,
+  0xd4, 0x92, 0x38, 0x1b, 0x0a, 0xce, 0xea, 0xf9, 0x6a, 0x0e, 0x37, 0x4d
+};
+
+static const uint8_t kEC384Signature[] = {
+  0x30, 0x65, 0x02, 0x31, 0x00, 0x8c, 0xdf, 0x30, 0xa4, 0x06, 0x2b, 0x15,
+  0x2f, 0x2e, 0x46, 0xbb, 0x3e, 0xd1, 0xa7, 0x87, 0x29, 0x2a, 0x30, 0x74,
+  0x29, 0x31, 0x38, 0x2a, 0x05, 0x74, 0x1c, 0xbd, 0xe6, 0xf4, 0x4b, 0x8d,
+  0x8e, 0xa9, 0x42, 0xad, 0xea, 0x62, 0x0d, 0x36, 0xa2, 0xde, 0x6e, 0x99,
+  0x7f, 0xa5, 0x51, 0x42, 0x1e, 0x02, 0x30, 0x35, 0xad, 0x08, 0x88, 0x52,
+  0x40, 0x2e, 0x91, 0x44, 0xf2, 0x07, 0x0a, 0x92, 0x39, 0x35, 0x1d, 0x15,
+  0xeb, 0x90, 0xc4, 0xd9, 0xfb, 0x83, 0xae, 0x99, 0xaa, 0x50, 0x4e, 0xc9,
+  0x35, 0x1d, 0x3a, 0x8d, 0x40, 0x9a, 0x91, 0x14, 0x6c, 0x0d, 0x02, 0x25,
+  0x7e, 0x48, 0x8b, 0x98, 0x9d, 0x3f, 0x14
+};
+
+static const uint8_t kEC521SubjectPublicKeyInfo[] = {
+  0x30, 0x81, 0x9b, 0x30, 0x10, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d,
+  0x02, 0x01, 0x06, 0x05, 0x2b, 0x81, 0x04, 0x00, 0x23, 0x03, 0x81, 0x86,
+  0x00, 0x04, 0x01, 0x59, 0x3c, 0x05, 0xb1, 0x74, 0x49, 0x54, 0x72, 0xea,
+  0xf5, 0xb0, 0x43, 0x98, 0x39, 0xfe, 0xc6, 0x4e, 0x8a, 0x58, 0x62, 0x83,
+  0xe7, 0x61, 0xeb, 0xf6, 0x50, 0x32, 0xa6, 0x1e, 0x7c, 0x6a, 0x7c, 0xa5,
+  0x4e, 0x5b, 0x96, 0x77, 0xfd, 0xf5, 0x5c, 0xe8, 0x61, 0x32, 0xc2, 0xd2,
+  0xcf, 0x06, 0xef, 0x46, 0xf1, 0x51, 0x50, 0x35, 0xf7, 0xac, 0x97, 0x7a,
+  0xfb, 0xe8, 0x9f, 0xa5, 0xc6, 0x32, 0x8a, 0xdf, 0x00, 0x9d, 0x6f, 0xd7,
+  0x34, 0xa7, 0xe5, 0x1d, 0x85, 0x4b, 0xc2, 0x26, 0x38, 0x8c, 0x6f, 0x8f,
+  0x75, 0xd8, 0x47, 0x08, 0xe7, 0xcb, 0x78, 0x9f, 0x3d, 0xe8, 0x5a, 0xe5,
+  0xa1, 0x74, 0x56, 0x80, 0x62, 0x7e, 0x95, 0x2a, 0x2d, 0x6e, 0x27, 0x71,
+  0x02, 0xf1, 0xbf, 0x5d, 0xe4, 0x7e, 0xab, 0x94, 0x92, 0x24, 0x0f, 0x31,
+  0x51, 0x33, 0x67, 0x6a, 0xfb, 0x29, 0xae, 0xa9, 0xaf, 0xdd, 0x09, 0x77,
+  0x08, 0xf8
+};
+
+static const uint8_t kEC521Signature[] = {
+  0x30, 0x81, 0x87, 0x02, 0x41, 0x56, 0xa2, 0x7e, 0xff, 0x54, 0xe2, 0xb4,
+  0x23, 0x08, 0xf8, 0xde, 0x28, 0x63, 0x77, 0x3b, 0x0f, 0x18, 0x7b, 0x5d,
+  0xac, 0x2f, 0x57, 0x04, 0xbe, 0x15, 0x7b, 0x04, 0xb1, 0xd2, 0x7f, 0x21,
+  0x14, 0x40, 0x18, 0xb2, 0x27, 0xe4, 0xef, 0x14, 0x54, 0x9c, 0xca, 0x90,
+  0xd8, 0x95, 0x3a, 0xfe, 0xf8, 0xe4, 0x60, 0x98, 0x45, 0x31, 0x5e, 0x3b,
+  0xac, 0x89, 0x48, 0x0b, 0xad, 0xe2, 0xeb, 0xa5, 0xec, 0xae, 0x02, 0x42,
+  0x01, 0xc9, 0x16, 0x18, 0x30, 0x1b, 0xdb, 0xbb, 0x99, 0x47, 0x32, 0xa0,
+  0x17, 0x02, 0xef, 0x30, 0x72, 0x77, 0x27, 0x06, 0x0c, 0x6d, 0x4a, 0x01,
+  0xba, 0xb0, 0x30, 0xec, 0x8b, 0x35, 0x44, 0x9a, 0xe5, 0xd2, 0x15, 0x74,
+  0x69, 0x67, 0x2a, 0xe8, 0x5a, 0xd3, 0xa4, 0x91, 0x39, 0x49, 0x60, 0x4f,
+  0x90, 0x78, 0xeb, 0xb4, 0xc0, 0x77, 0x53, 0xf7, 0xf5, 0x44, 0xfc, 0x29,
+  0x86, 0xaf, 0x95, 0x6f, 0x56, 0xcd
+};
+
+static const VerifySignedDataNSSTestParams
+  VERIFYSIGNEDDIGESTNSS_TEST_PARAMS[] =
+{
+  {
+    BS(kData),
+    DigestAlgorithm::sha1,
+    BS(kRsaPkcs1Sha1Signature),
+    PublicKeyAlgorithm::RSA_PKCS1,
+    BS(kRsaSubjectPublicKeyInfo),
+    Success,
+  },
+  {
+    BS(kData),
+    DigestAlgorithm::sha256,
+    BS(kRsaPkcs1Sha256Signature),
+    PublicKeyAlgorithm::RSA_PKCS1,
+    BS(kRsaSubjectPublicKeyInfo),
+    Success,
+  },
+  {
+    BS(kData),
+    DigestAlgorithm::sha384,
+    BS(kRsaPkcs1Sha384Signature),
+    PublicKeyAlgorithm::RSA_PKCS1,
+    BS(kRsaSubjectPublicKeyInfo),
+    Success,
+  },
+  {
+    BS(kData),
+    DigestAlgorithm::sha512,
+    BS(kRsaPkcs1Sha512Signature),
+    PublicKeyAlgorithm::RSA_PKCS1,
+    BS(kRsaSubjectPublicKeyInfo),
+    Success,
+  },
+  {
+    BS(kData),
+    DigestAlgorithm::sha1,
+    BS(kEC256Sha1Signature),
+    PublicKeyAlgorithm::ECDSA,
+    BS(kEC256SubjectPublicKeyInfo),
+    Success,
+  },
+  {
+    BS(kData),
+    DigestAlgorithm::sha256,
+    BS(kEC256Signature),
+    PublicKeyAlgorithm::ECDSA,
+    BS(kEC256SubjectPublicKeyInfo),
+    Success,
+  },
+  {
+    BS(kData),
+    DigestAlgorithm::sha384,
+    BS(kEC384Signature),
+    PublicKeyAlgorithm::ECDSA,
+    BS(kEC384SubjectPublicKeyInfo),
+    Success,
+  },
+  {
+    BS(kData),
+    DigestAlgorithm::sha512,
+    BS(kEC521Signature),
+    PublicKeyAlgorithm::ECDSA,
+    BS(kEC521SubjectPublicKeyInfo),
+    Success,
+  },
+  // Wrong digest algorithm - RSA PKCS#1
+  {
+    BS(kData),
+    DigestAlgorithm::sha256,
+    BS(kRsaPkcs1Sha384Signature),
+    PublicKeyAlgorithm::RSA_PKCS1,
+    BS(kRsaSubjectPublicKeyInfo),
+    Result::ERROR_BAD_SIGNATURE,
+  },
+  // Wrong digest algorithm - ECDSA
+  {
+    BS(kData),
+    DigestAlgorithm::sha1,
+    BS(kEC256Signature),
+    PublicKeyAlgorithm::ECDSA,
+    BS(kEC256SubjectPublicKeyInfo),
+    Result::ERROR_BAD_SIGNATURE,
+  },
+  // ECDSA key for RSA PKCS#1 signature
+  {
+    BS(kData),
+    DigestAlgorithm::sha256,
+    BS(kRsaPkcs1Sha256Signature),
+    PublicKeyAlgorithm::ECDSA,
+    BS(kEC256SubjectPublicKeyInfo),
+    Result::ERROR_BAD_SIGNATURE,
+  },
+  // RSA PKCS#1 key for ECDSA signature
+  {
+    BS(kData),
+    DigestAlgorithm::sha256,
+    BS(kEC256Signature),
+    PublicKeyAlgorithm::RSA_PKCS1,
+    BS(kRsaSubjectPublicKeyInfo),
+    Result::ERROR_BAD_SIGNATURE,
+  },
+  // Wrong data.
+  {
+    BS(kRsaSubjectPublicKeyInfo),
+    DigestAlgorithm::sha384,
+    BS(kEC384Signature),
+    PublicKeyAlgorithm::ECDSA,
+    BS(kEC384SubjectPublicKeyInfo),
+    Result::ERROR_BAD_SIGNATURE,
+  },
+};
+
+class pkixnss_VerifySignedDataNSS
+  : public ::testing::Test
+  , public ::testing::WithParamInterface<VerifySignedDataNSSTestParams>
+{
+};
+
+void CheckVerifySignedData(PublicKeyAlgorithm publicKeyAlgorithm, Input data,
+    DigestAlgorithm digestAlgorithm, Input signature, Input subjectPublicKeyInfo,
+    Result expectedResult)
+{
+  switch (publicKeyAlgorithm) {
+    case PublicKeyAlgorithm::RSA_PKCS1:
+      ASSERT_EQ(expectedResult,
+                VerifyRSAPKCS1SignedDataNSS(data, digestAlgorithm, signature,
+                                            subjectPublicKeyInfo, nullptr));
+      break;
+    case PublicKeyAlgorithm::ECDSA:
+      ASSERT_EQ(expectedResult,
+                VerifyECDSASignedDataNSS(data, digestAlgorithm, signature,
+                                         subjectPublicKeyInfo, nullptr));
+      break;
+    default:
+      ASSERT_FALSE(true);
+  }
+}
+
+TEST_P(pkixnss_VerifySignedDataNSS, VerifySignedDataNSS)
+{
+  const VerifySignedDataNSSTestParams& params(GetParam());
+
+  ByteString data(params.data);
+  Input dataInput;
+  ASSERT_EQ(Success, dataInput.Init(data.data(), data.length()));
+  ByteString signature(params.signature);
+  Input signatureInput;
+  ASSERT_EQ(Success, signatureInput.Init(signature.data(), signature.length()));
+
+  Input subjectPublicKeyInfo;
+  ASSERT_EQ(Success,
+            subjectPublicKeyInfo.Init(params.subjectPublicKeyInfo.data(),
+                                      params.subjectPublicKeyInfo.length()));
+  CheckVerifySignedData(params.publicKeyAlgorithm, dataInput,
+      params.digestAlgorithm, signatureInput, subjectPublicKeyInfo,
+      params.expectedResult);
+
+  if (params.expectedResult == Success) {
+    signature[signature.length() - 4] = ~signature[signature.length() - 4];
+
+    CheckVerifySignedData(params.publicKeyAlgorithm, dataInput,
+      params.digestAlgorithm, signatureInput, subjectPublicKeyInfo,
+      Result::ERROR_BAD_SIGNATURE);
+
+    signature[signature.length() - 4] = ~signature[signature.length() - 4];
+    data[data.length() - 10] = ~data[data.length() - 10];
+
+    CheckVerifySignedData(params.publicKeyAlgorithm, dataInput,
+      params.digestAlgorithm, signatureInput, subjectPublicKeyInfo,
+      Result::ERROR_BAD_SIGNATURE);
+  }
+}
+
+INSTANTIATE_TEST_SUITE_P(
+  pkixnss_VerifySignedDataNSS, pkixnss_VerifySignedDataNSS,
+  testing::ValuesIn(VERIFYSIGNEDDIGESTNSS_TEST_PARAMS));