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- /*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
- /* ====================================================================
- * Copyright (c) 2015 The OpenSSL Project. 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.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- */
-
- #include <openssl/evp.h>
-
- #include <stdio.h>
- #include <stdint.h>
- #include <stdlib.h>
- #include <string.h>
-
- OPENSSL_MSVC_PRAGMA(warning(push))
- OPENSSL_MSVC_PRAGMA(warning(disable: 4702))
-
- #include <map>
- #include <string>
- #include <utility>
- #include <vector>
-
- OPENSSL_MSVC_PRAGMA(warning(pop))
-
- #include <gtest/gtest.h>
-
- #include <openssl/buf.h>
- #include <openssl/bytestring.h>
- #include <openssl/crypto.h>
- #include <openssl/digest.h>
- #include <openssl/err.h>
- #include <openssl/rsa.h>
-
- #include "../test/file_test.h"
- #include "../test/test_util.h"
- #include "../test/wycheproof_util.h"
-
-
- // evp_test dispatches between multiple test types. PrivateKey tests take a key
- // name parameter and single block, decode it as a PEM private key, and save it
- // under that key name. Decrypt, Sign, and Verify tests take a previously
- // imported key name as parameter and test their respective operations.
-
- static const EVP_MD *GetDigest(FileTest *t, const std::string &name) {
- if (name == "MD5") {
- return EVP_md5();
- } else if (name == "SHA1") {
- return EVP_sha1();
- } else if (name == "SHA224") {
- return EVP_sha224();
- } else if (name == "SHA256") {
- return EVP_sha256();
- } else if (name == "SHA384") {
- return EVP_sha384();
- } else if (name == "SHA512") {
- return EVP_sha512();
- }
- ADD_FAILURE() << "Unknown digest: " << name;
- return nullptr;
- }
-
- static int GetKeyType(FileTest *t, const std::string &name) {
- if (name == "RSA") {
- return EVP_PKEY_RSA;
- }
- if (name == "EC") {
- return EVP_PKEY_EC;
- }
- if (name == "DSA") {
- return EVP_PKEY_DSA;
- }
- if (name == "Ed25519") {
- return EVP_PKEY_ED25519;
- }
- ADD_FAILURE() << "Unknown key type: " << name;
- return EVP_PKEY_NONE;
- }
-
- static int GetRSAPadding(FileTest *t, int *out, const std::string &name) {
- if (name == "PKCS1") {
- *out = RSA_PKCS1_PADDING;
- return true;
- }
- if (name == "PSS") {
- *out = RSA_PKCS1_PSS_PADDING;
- return true;
- }
- if (name == "OAEP") {
- *out = RSA_PKCS1_OAEP_PADDING;
- return true;
- }
- ADD_FAILURE() << "Unknown RSA padding mode: " << name;
- return false;
- }
-
- using KeyMap = std::map<std::string, bssl::UniquePtr<EVP_PKEY>>;
-
- static bool ImportKey(FileTest *t, KeyMap *key_map,
- EVP_PKEY *(*parse_func)(CBS *cbs),
- int (*marshal_func)(CBB *cbb, const EVP_PKEY *key)) {
- std::vector<uint8_t> input;
- if (!t->GetBytes(&input, "Input")) {
- return false;
- }
-
- CBS cbs;
- CBS_init(&cbs, input.data(), input.size());
- bssl::UniquePtr<EVP_PKEY> pkey(parse_func(&cbs));
- if (!pkey) {
- return false;
- }
-
- std::string key_type;
- if (!t->GetAttribute(&key_type, "Type")) {
- return false;
- }
- EXPECT_EQ(GetKeyType(t, key_type), EVP_PKEY_id(pkey.get()));
-
- // The key must re-encode correctly.
- bssl::ScopedCBB cbb;
- uint8_t *der;
- size_t der_len;
- if (!CBB_init(cbb.get(), 0) ||
- !marshal_func(cbb.get(), pkey.get()) ||
- !CBB_finish(cbb.get(), &der, &der_len)) {
- return false;
- }
- bssl::UniquePtr<uint8_t> free_der(der);
-
- std::vector<uint8_t> output = input;
- if (t->HasAttribute("Output") &&
- !t->GetBytes(&output, "Output")) {
- return false;
- }
- EXPECT_EQ(Bytes(output), Bytes(der, der_len)) << "Re-encoding the key did not match.";
-
- // Save the key for future tests.
- const std::string &key_name = t->GetParameter();
- EXPECT_EQ(0u, key_map->count(key_name)) << "Duplicate key: " << key_name;
- (*key_map)[key_name] = std::move(pkey);
- return true;
- }
-
- // SetupContext configures |ctx| based on attributes in |t|, with the exception
- // of the signing digest which must be configured externally.
- static bool SetupContext(FileTest *t, EVP_PKEY_CTX *ctx) {
- if (t->HasAttribute("RSAPadding")) {
- int padding;
- if (!GetRSAPadding(t, &padding, t->GetAttributeOrDie("RSAPadding")) ||
- !EVP_PKEY_CTX_set_rsa_padding(ctx, padding)) {
- return false;
- }
- }
- if (t->HasAttribute("PSSSaltLength") &&
- !EVP_PKEY_CTX_set_rsa_pss_saltlen(
- ctx, atoi(t->GetAttributeOrDie("PSSSaltLength").c_str()))) {
- return false;
- }
- if (t->HasAttribute("MGF1Digest")) {
- const EVP_MD *digest = GetDigest(t, t->GetAttributeOrDie("MGF1Digest"));
- if (digest == nullptr || !EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, digest)) {
- return false;
- }
- }
- if (t->HasAttribute("OAEPDigest")) {
- const EVP_MD *digest = GetDigest(t, t->GetAttributeOrDie("OAEPDigest"));
- if (digest == nullptr || !EVP_PKEY_CTX_set_rsa_oaep_md(ctx, digest)) {
- return false;
- }
- }
- if (t->HasAttribute("OAEPLabel")) {
- std::vector<uint8_t> label;
- if (!t->GetBytes(&label, "OAEPLabel")) {
- return false;
- }
- // For historical reasons, |EVP_PKEY_CTX_set0_rsa_oaep_label| expects to be
- // take ownership of the input.
- bssl::UniquePtr<uint8_t> buf(
- reinterpret_cast<uint8_t *>(BUF_memdup(label.data(), label.size())));
- if (!buf ||
- !EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, buf.get(), label.size())) {
- return false;
- }
- buf.release();
- }
- return true;
- }
-
- static bool TestEVP(FileTest *t, KeyMap *key_map) {
- if (t->GetType() == "PrivateKey") {
- return ImportKey(t, key_map, EVP_parse_private_key,
- EVP_marshal_private_key);
- }
-
- if (t->GetType() == "PublicKey") {
- return ImportKey(t, key_map, EVP_parse_public_key, EVP_marshal_public_key);
- }
-
- int (*key_op_init)(EVP_PKEY_CTX *ctx) = nullptr;
- int (*key_op)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
- const uint8_t *in, size_t in_len) = nullptr;
- int (*md_op_init)(EVP_MD_CTX * ctx, EVP_PKEY_CTX * *pctx, const EVP_MD *type,
- ENGINE *e, EVP_PKEY *pkey) = nullptr;
- bool is_verify = false;
- if (t->GetType() == "Decrypt") {
- key_op_init = EVP_PKEY_decrypt_init;
- key_op = EVP_PKEY_decrypt;
- } else if (t->GetType() == "Sign") {
- key_op_init = EVP_PKEY_sign_init;
- key_op = EVP_PKEY_sign;
- } else if (t->GetType() == "Verify") {
- key_op_init = EVP_PKEY_verify_init;
- is_verify = true;
- } else if (t->GetType() == "SignMessage") {
- md_op_init = EVP_DigestSignInit;
- } else if (t->GetType() == "VerifyMessage") {
- md_op_init = EVP_DigestVerifyInit;
- is_verify = true;
- } else if (t->GetType() == "Encrypt") {
- key_op_init = EVP_PKEY_encrypt_init;
- key_op = EVP_PKEY_encrypt;
- } else {
- ADD_FAILURE() << "Unknown test " << t->GetType();
- return false;
- }
-
- // Load the key.
- const std::string &key_name = t->GetParameter();
- if (key_map->count(key_name) == 0) {
- ADD_FAILURE() << "Could not find key " << key_name;
- return false;
- }
- EVP_PKEY *key = (*key_map)[key_name].get();
-
- const EVP_MD *digest = nullptr;
- if (t->HasAttribute("Digest")) {
- digest = GetDigest(t, t->GetAttributeOrDie("Digest"));
- if (digest == nullptr) {
- return false;
- }
- }
-
- // For verify tests, the "output" is the signature. Read it now so that, for
- // tests which expect a failure in SetupContext, the attribute is still
- // consumed.
- std::vector<uint8_t> input, actual, output;
- if (!t->GetBytes(&input, "Input") ||
- (is_verify && !t->GetBytes(&output, "Output"))) {
- return false;
- }
-
- if (md_op_init) {
- bssl::ScopedEVP_MD_CTX ctx;
- EVP_PKEY_CTX *pctx;
- if (!md_op_init(ctx.get(), &pctx, digest, nullptr, key) ||
- !SetupContext(t, pctx)) {
- return false;
- }
-
- if (is_verify) {
- return !!EVP_DigestVerify(ctx.get(), output.data(), output.size(),
- input.data(), input.size());
- }
-
- size_t len;
- if (!EVP_DigestSign(ctx.get(), nullptr, &len, input.data(), input.size())) {
- return false;
- }
- actual.resize(len);
- if (!EVP_DigestSign(ctx.get(), actual.data(), &len, input.data(),
- input.size()) ||
- !t->GetBytes(&output, "Output")) {
- return false;
- }
- actual.resize(len);
- EXPECT_EQ(Bytes(output), Bytes(actual));
- return true;
- }
-
- bssl::UniquePtr<EVP_PKEY_CTX> ctx(EVP_PKEY_CTX_new(key, nullptr));
- if (!ctx ||
- !key_op_init(ctx.get()) ||
- (digest != nullptr &&
- !EVP_PKEY_CTX_set_signature_md(ctx.get(), digest)) ||
- !SetupContext(t, ctx.get())) {
- return false;
- }
-
- if (is_verify) {
- return !!EVP_PKEY_verify(ctx.get(), output.data(), output.size(),
- input.data(), input.size());
- }
-
- size_t len;
- if (!key_op(ctx.get(), nullptr, &len, input.data(), input.size())) {
- return false;
- }
- actual.resize(len);
- if (!key_op(ctx.get(), actual.data(), &len, input.data(), input.size())) {
- return false;
- }
-
- // Encryption is non-deterministic, so we check by decrypting.
- if (t->HasAttribute("CheckDecrypt")) {
- size_t plaintext_len;
- ctx.reset(EVP_PKEY_CTX_new(key, nullptr));
- if (!ctx ||
- !EVP_PKEY_decrypt_init(ctx.get()) ||
- (digest != nullptr &&
- !EVP_PKEY_CTX_set_signature_md(ctx.get(), digest)) ||
- !SetupContext(t, ctx.get()) ||
- !EVP_PKEY_decrypt(ctx.get(), nullptr, &plaintext_len, actual.data(),
- actual.size())) {
- return false;
- }
- output.resize(plaintext_len);
- if (!EVP_PKEY_decrypt(ctx.get(), output.data(), &plaintext_len,
- actual.data(), actual.size())) {
- ADD_FAILURE() << "Could not decrypt result.";
- return false;
- }
- output.resize(plaintext_len);
- EXPECT_EQ(Bytes(input), Bytes(output)) << "Decrypted result mismatch.";
- return true;
- }
-
- // Some signature schemes are non-deterministic, so we check by verifying.
- if (t->HasAttribute("CheckVerify")) {
- ctx.reset(EVP_PKEY_CTX_new(key, nullptr));
- if (!ctx ||
- !EVP_PKEY_verify_init(ctx.get()) ||
- (digest != nullptr &&
- !EVP_PKEY_CTX_set_signature_md(ctx.get(), digest)) ||
- !SetupContext(t, ctx.get())) {
- return false;
- }
- if (t->HasAttribute("VerifyPSSSaltLength") &&
- !EVP_PKEY_CTX_set_rsa_pss_saltlen(
- ctx.get(),
- atoi(t->GetAttributeOrDie("VerifyPSSSaltLength").c_str()))) {
- return false;
- }
- EXPECT_TRUE(EVP_PKEY_verify(ctx.get(), actual.data(), actual.size(),
- input.data(), input.size()))
- << "Could not verify result.";
- return true;
- }
-
- // By default, check by comparing the result against Output.
- if (!t->GetBytes(&output, "Output")) {
- return false;
- }
- actual.resize(len);
- EXPECT_EQ(Bytes(output), Bytes(actual));
- return true;
- }
-
- TEST(EVPTest, TestVectors) {
- KeyMap key_map;
- FileTestGTest("crypto/evp/evp_tests.txt", [&](FileTest *t) {
- bool result = TestEVP(t, &key_map);
- if (t->HasAttribute("Error")) {
- ASSERT_FALSE(result) << "Operation unexpectedly succeeded.";
- uint32_t err = ERR_peek_error();
- EXPECT_EQ(t->GetAttributeOrDie("Error"), ERR_reason_error_string(err));
- } else if (!result) {
- ADD_FAILURE() << "Operation unexpectedly failed.";
- }
- });
- }
-
- static void RunWycheproofTest(const char *path) {
- SCOPED_TRACE(path);
- FileTestGTest(path, [](FileTest *t) {
- t->IgnoreInstruction("key.type");
- // Extra ECDSA fields.
- t->IgnoreInstruction("key.curve");
- t->IgnoreInstruction("key.keySize");
- t->IgnoreInstruction("key.wx");
- t->IgnoreInstruction("key.wy");
- // Extra RSA fields.
- t->IgnoreInstruction("e");
- t->IgnoreInstruction("keyAsn");
- t->IgnoreInstruction("keysize");
- t->IgnoreInstruction("n");
- t->IgnoreAttribute("padding");
-
- std::vector<uint8_t> der;
- ASSERT_TRUE(t->GetInstructionBytes(&der, "keyDer"));
- CBS cbs;
- CBS_init(&cbs, der.data(), der.size());
- bssl::UniquePtr<EVP_PKEY> key(EVP_parse_public_key(&cbs));
- ASSERT_TRUE(key);
-
- const EVP_MD *md = GetWycheproofDigest(t, "sha", true);
- ASSERT_TRUE(md);
- std::vector<uint8_t> msg;
- ASSERT_TRUE(t->GetBytes(&msg, "msg"));
- std::vector<uint8_t> sig;
- ASSERT_TRUE(t->GetBytes(&sig, "sig"));
-
- bssl::ScopedEVP_MD_CTX ctx;
- ASSERT_TRUE(
- EVP_DigestVerifyInit(ctx.get(), nullptr, md, nullptr, key.get()));
- WycheproofResult result;
- ASSERT_TRUE(GetWycheproofResult(t, &result));
- EXPECT_EQ(result == WycheproofResult::kValid ? 1 : 0,
- EVP_DigestVerify(ctx.get(), sig.data(), sig.size(), msg.data(),
- msg.size()));
- });
- }
-
- TEST(EVPTest, Wycheproof) {
- RunWycheproofTest("third_party/wycheproof/ecdsa_secp224r1_sha224_test.txt");
- RunWycheproofTest("third_party/wycheproof/ecdsa_secp224r1_sha256_test.txt");
- RunWycheproofTest("third_party/wycheproof/ecdsa_secp256r1_sha256_test.txt");
- RunWycheproofTest("third_party/wycheproof/ecdsa_secp384r1_sha384_test.txt");
- RunWycheproofTest("third_party/wycheproof/ecdsa_secp384r1_sha512_test.txt");
- RunWycheproofTest("third_party/wycheproof/ecdsa_secp521r1_sha512_test.txt");
- RunWycheproofTest("third_party/wycheproof/rsa_signature_test.txt");
- }
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