6757fbf8e3
BUG=129 Change-Id: Ifcdacb2f5f59fd03b757f88778ceb1e672208fd9 Reviewed-on: https://boringssl-review.googlesource.com/16744 Reviewed-by: Adam Langley <agl@google.com> Commit-Queue: Adam Langley <agl@google.com> CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
115 lines
4.1 KiB
C++
115 lines
4.1 KiB
C++
/* Copyright (c) 2016, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include <stdio.h>
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#include <vector>
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#include <gtest/gtest.h>
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#include <openssl/bn.h>
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#include <openssl/crypto.h>
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#include <openssl/ec.h>
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#include <openssl/ec_key.h>
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#include <openssl/ecdh.h>
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#include <openssl/nid.h>
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#include "../test/file_test.h"
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#include "../test/test_util.h"
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static bssl::UniquePtr<EC_GROUP> GetCurve(FileTest *t, const char *key) {
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std::string curve_name;
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if (!t->GetAttribute(&curve_name, key)) {
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return nullptr;
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}
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if (curve_name == "P-224") {
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return bssl::UniquePtr<EC_GROUP>(EC_GROUP_new_by_curve_name(NID_secp224r1));
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}
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if (curve_name == "P-256") {
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return bssl::UniquePtr<EC_GROUP>(EC_GROUP_new_by_curve_name(
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NID_X9_62_prime256v1));
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}
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if (curve_name == "P-384") {
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return bssl::UniquePtr<EC_GROUP>(EC_GROUP_new_by_curve_name(NID_secp384r1));
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}
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if (curve_name == "P-521") {
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return bssl::UniquePtr<EC_GROUP>(EC_GROUP_new_by_curve_name(NID_secp521r1));
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}
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t->PrintLine("Unknown curve '%s'", curve_name.c_str());
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return nullptr;
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}
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static bssl::UniquePtr<BIGNUM> GetBIGNUM(FileTest *t, const char *key) {
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std::vector<uint8_t> bytes;
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if (!t->GetBytes(&bytes, key)) {
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return nullptr;
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}
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return bssl::UniquePtr<BIGNUM>(BN_bin2bn(bytes.data(), bytes.size(), nullptr));
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}
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TEST(ECDHTest, TestVectors) {
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FileTestGTest("crypto/ecdh/ecdh_tests.txt", [](FileTest *t) {
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bssl::UniquePtr<EC_GROUP> group = GetCurve(t, "Curve");
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ASSERT_TRUE(group);
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bssl::UniquePtr<BIGNUM> priv_key = GetBIGNUM(t, "Private");
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ASSERT_TRUE(priv_key);
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bssl::UniquePtr<BIGNUM> x = GetBIGNUM(t, "X");
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ASSERT_TRUE(x);
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bssl::UniquePtr<BIGNUM> y = GetBIGNUM(t, "Y");
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ASSERT_TRUE(y);
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bssl::UniquePtr<BIGNUM> peer_x = GetBIGNUM(t, "PeerX");
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ASSERT_TRUE(peer_x);
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bssl::UniquePtr<BIGNUM> peer_y = GetBIGNUM(t, "PeerY");
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ASSERT_TRUE(peer_y);
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std::vector<uint8_t> z;
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ASSERT_TRUE(t->GetBytes(&z, "Z"));
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bssl::UniquePtr<EC_KEY> key(EC_KEY_new());
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ASSERT_TRUE(key);
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bssl::UniquePtr<EC_POINT> pub_key(EC_POINT_new(group.get()));
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ASSERT_TRUE(pub_key);
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bssl::UniquePtr<EC_POINT> peer_pub_key(EC_POINT_new(group.get()));
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ASSERT_TRUE(peer_pub_key);
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ASSERT_TRUE(EC_KEY_set_group(key.get(), group.get()));
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ASSERT_TRUE(EC_KEY_set_private_key(key.get(), priv_key.get()));
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ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(group.get(), pub_key.get(),
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x.get(), y.get(), nullptr));
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ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(
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group.get(), peer_pub_key.get(), peer_x.get(), peer_y.get(), nullptr));
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ASSERT_TRUE(EC_KEY_set_public_key(key.get(), pub_key.get()));
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ASSERT_TRUE(EC_KEY_check_key(key.get()));
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std::vector<uint8_t> actual_z;
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// Make |actual_z| larger than expected to ensure |ECDH_compute_key| returns
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// the right amount of data.
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actual_z.resize(z.size() + 1);
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int ret = ECDH_compute_key(actual_z.data(), actual_z.size(),
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peer_pub_key.get(), key.get(), nullptr);
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ASSERT_GE(ret, 0);
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EXPECT_EQ(Bytes(z), Bytes(actual_z.data(), static_cast<size_t>(ret)));
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// Test |ECDH_compute_key| truncates.
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actual_z.resize(z.size() - 1);
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ret = ECDH_compute_key(actual_z.data(), actual_z.size(), peer_pub_key.get(),
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key.get(), nullptr);
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ASSERT_GE(ret, 0);
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EXPECT_EQ(Bytes(z.data(), z.size() - 1),
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Bytes(actual_z.data(), static_cast<size_t>(ret)));
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});
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}
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