8e79f2ee9c
Based on Nekogram. Key additions: - Rebrand to FoxiGram (app name, APK name, applicationId com.foxigram.app) - Embedded Xray (VLESS+Reality) proxy client via JNI libxray.so - Bundled hidden one-tap proxies (LTE + WiFi), read-only in UI - Auto-restore proxy on restart, rebind to active network (LTE/WiFi) - Server credentials externalized to git-ignored XrayServers.java (+ template) - libxray Go source included; compiled .so, keystore, google-services.json ignored
1419 lines
57 KiB
C++
1419 lines
57 KiB
C++
// Copyright 2014 The BoringSSL Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.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/bytestring.h>
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#include <openssl/crypto.h>
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#include <openssl/ec_key.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/nid.h>
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#include <openssl/obj.h>
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#include <openssl/span.h>
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#include "../../ec/internal.h"
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#include "../../test/file_test.h"
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#include "../../test/test_util.h"
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#include "../bn/internal.h"
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#include "internal.h"
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namespace {
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// kECKeyWithoutPublic is an ECPrivateKey with the optional publicKey field
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// omitted.
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static const uint8_t kECKeyWithoutPublic[] = {
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0x30, 0x31, 0x02, 0x01, 0x01, 0x04, 0x20, 0xc6, 0xc1, 0xaa, 0xda,
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0x15, 0xb0, 0x76, 0x61, 0xf8, 0x14, 0x2c, 0x6c, 0xaf, 0x0f, 0xdb,
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0x24, 0x1a, 0xff, 0x2e, 0xfe, 0x46, 0xc0, 0x93, 0x8b, 0x74, 0xf2,
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0xbc, 0xc5, 0x30, 0x52, 0xb0, 0x77, 0xa0, 0x0a, 0x06, 0x08, 0x2a,
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0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07,
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};
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// kECKeySpecifiedCurve is the above key with P-256's parameters explicitly
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// spelled out rather than using a named curve.
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static const uint8_t kECKeySpecifiedCurve[] = {
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0x30, 0x82, 0x01, 0x22, 0x02, 0x01, 0x01, 0x04, 0x20, 0xc6, 0xc1, 0xaa,
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0xda, 0x15, 0xb0, 0x76, 0x61, 0xf8, 0x14, 0x2c, 0x6c, 0xaf, 0x0f, 0xdb,
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0x24, 0x1a, 0xff, 0x2e, 0xfe, 0x46, 0xc0, 0x93, 0x8b, 0x74, 0xf2, 0xbc,
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0xc5, 0x30, 0x52, 0xb0, 0x77, 0xa0, 0x81, 0xfa, 0x30, 0x81, 0xf7, 0x02,
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0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x01,
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0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0x30, 0x5b, 0x04, 0x20, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc,
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0x04, 0x20, 0x5a, 0xc6, 0x35, 0xd8, 0xaa, 0x3a, 0x93, 0xe7, 0xb3, 0xeb,
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0xbd, 0x55, 0x76, 0x98, 0x86, 0xbc, 0x65, 0x1d, 0x06, 0xb0, 0xcc, 0x53,
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0xb0, 0xf6, 0x3b, 0xce, 0x3c, 0x3e, 0x27, 0xd2, 0x60, 0x4b, 0x03, 0x15,
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0x00, 0xc4, 0x9d, 0x36, 0x08, 0x86, 0xe7, 0x04, 0x93, 0x6a, 0x66, 0x78,
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0xe1, 0x13, 0x9d, 0x26, 0xb7, 0x81, 0x9f, 0x7e, 0x90, 0x04, 0x41, 0x04,
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0x6b, 0x17, 0xd1, 0xf2, 0xe1, 0x2c, 0x42, 0x47, 0xf8, 0xbc, 0xe6, 0xe5,
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0x63, 0xa4, 0x40, 0xf2, 0x77, 0x03, 0x7d, 0x81, 0x2d, 0xeb, 0x33, 0xa0,
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0xf4, 0xa1, 0x39, 0x45, 0xd8, 0x98, 0xc2, 0x96, 0x4f, 0xe3, 0x42, 0xe2,
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0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb, 0x4a, 0x7c, 0x0f, 0x9e, 0x16,
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0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31, 0x5e, 0xce, 0xcb, 0xb6, 0x40, 0x68,
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0x37, 0xbf, 0x51, 0xf5, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00,
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0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xbc,
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0xe6, 0xfa, 0xad, 0xa7, 0x17, 0x9e, 0x84, 0xf3, 0xb9, 0xca, 0xc2, 0xfc,
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0x63, 0x25, 0x51, 0x02, 0x01, 0x01,
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};
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// kECKeyMissingZeros is an ECPrivateKey containing a degenerate P-256 key where
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// the private key is one. The private key is incorrectly encoded without zero
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// padding.
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static const uint8_t kECKeyMissingZeros[] = {
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0x30, 0x58, 0x02, 0x01, 0x01, 0x04, 0x01, 0x01, 0xa0, 0x0a, 0x06, 0x08,
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0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0xa1, 0x44, 0x03, 0x42,
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0x00, 0x04, 0x6b, 0x17, 0xd1, 0xf2, 0xe1, 0x2c, 0x42, 0x47, 0xf8, 0xbc,
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0xe6, 0xe5, 0x63, 0xa4, 0x40, 0xf2, 0x77, 0x03, 0x7d, 0x81, 0x2d, 0xeb,
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0x33, 0xa0, 0xf4, 0xa1, 0x39, 0x45, 0xd8, 0x98, 0xc2, 0x96, 0x4f, 0xe3,
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0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb, 0x4a, 0x7c, 0x0f,
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0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31, 0x5e, 0xce, 0xcb, 0xb6,
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0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5,
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};
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// kECKeyMissingZeros is an ECPrivateKey containing a degenerate P-256 key where
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// the private key is one. The private key is encoded with the required zero
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// padding.
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static const uint8_t kECKeyWithZeros[] = {
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0x30, 0x77, 0x02, 0x01, 0x01, 0x04, 0x20, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xa0, 0x0a, 0x06, 0x08, 0x2a,
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0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0xa1, 0x44, 0x03, 0x42,
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0x00, 0x04, 0x6b, 0x17, 0xd1, 0xf2, 0xe1, 0x2c, 0x42, 0x47, 0xf8,
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0xbc, 0xe6, 0xe5, 0x63, 0xa4, 0x40, 0xf2, 0x77, 0x03, 0x7d, 0x81,
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0x2d, 0xeb, 0x33, 0xa0, 0xf4, 0xa1, 0x39, 0x45, 0xd8, 0x98, 0xc2,
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0x96, 0x4f, 0xe3, 0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7,
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0xeb, 0x4a, 0x7c, 0x0f, 0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 0x6b,
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0x31, 0x5e, 0xce, 0xcb, 0xb6, 0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5,
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};
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static const uint8_t kECKeyWithZerosPublic[] = {
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0x04, 0x6b, 0x17, 0xd1, 0xf2, 0xe1, 0x2c, 0x42, 0x47, 0xf8, 0xbc,
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0xe6, 0xe5, 0x63, 0xa4, 0x40, 0xf2, 0x77, 0x03, 0x7d, 0x81, 0x2d,
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0xeb, 0x33, 0xa0, 0xf4, 0xa1, 0x39, 0x45, 0xd8, 0x98, 0xc2, 0x96,
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0x4f, 0xe3, 0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb,
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0x4a, 0x7c, 0x0f, 0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31,
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0x5e, 0xce, 0xcb, 0xb6, 0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5,
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};
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static const uint8_t kECKeyWithZerosRawPrivate[] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
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// DecodeECPrivateKey decodes |in| as an ECPrivateKey structure and returns the
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// result or nullptr on error.
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static bssl::UniquePtr<EC_KEY> DecodeECPrivateKey(const uint8_t *in,
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size_t in_len) {
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CBS cbs;
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CBS_init(&cbs, in, in_len);
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bssl::UniquePtr<EC_KEY> ret(EC_KEY_parse_private_key(&cbs, NULL));
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if (!ret || CBS_len(&cbs) != 0) {
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return nullptr;
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}
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return ret;
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}
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// EncodeECPrivateKey encodes |key| as an ECPrivateKey structure into |*out|. It
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// returns true on success or false on error.
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static bool EncodeECPrivateKey(std::vector<uint8_t> *out, const EC_KEY *key) {
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bssl::ScopedCBB cbb;
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uint8_t *der;
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size_t der_len;
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if (!CBB_init(cbb.get(), 0) ||
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!EC_KEY_marshal_private_key(cbb.get(), key, EC_KEY_get_enc_flags(key)) ||
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!CBB_finish(cbb.get(), &der, &der_len)) {
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return false;
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}
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out->assign(der, der + der_len);
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OPENSSL_free(der);
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return true;
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}
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static bool EncodeECPoint(std::vector<uint8_t> *out, const EC_GROUP *group,
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const EC_POINT *p, point_conversion_form_t form) {
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size_t len = EC_POINT_point2oct(group, p, form, nullptr, 0, nullptr);
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if (len == 0) {
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return false;
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}
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out->resize(len);
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len = EC_POINT_point2oct(group, p, form, out->data(), out->size(), nullptr);
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if (len != out->size()) {
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return false;
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}
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return true;
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}
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TEST(ECTest, Encoding) {
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bssl::UniquePtr<EC_KEY> key =
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DecodeECPrivateKey(kECKeyWithoutPublic, sizeof(kECKeyWithoutPublic));
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ASSERT_TRUE(key);
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// Test that the encoding round-trips.
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std::vector<uint8_t> out;
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ASSERT_TRUE(EncodeECPrivateKey(&out, key.get()));
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EXPECT_EQ(Bytes(kECKeyWithoutPublic), Bytes(out.data(), out.size()));
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const EC_POINT *pub_key = EC_KEY_get0_public_key(key.get());
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ASSERT_TRUE(pub_key) << "Public key missing";
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bssl::UniquePtr<BIGNUM> x(BN_new());
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bssl::UniquePtr<BIGNUM> y(BN_new());
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ASSERT_TRUE(x);
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ASSERT_TRUE(y);
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ASSERT_TRUE(EC_POINT_get_affine_coordinates_GFp(
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EC_KEY_get0_group(key.get()), pub_key, x.get(), y.get(), NULL));
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bssl::UniquePtr<char> x_hex(BN_bn2hex(x.get()));
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bssl::UniquePtr<char> y_hex(BN_bn2hex(y.get()));
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ASSERT_TRUE(x_hex);
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ASSERT_TRUE(y_hex);
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EXPECT_STREQ(
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"c81561ecf2e54edefe6617db1c7a34a70744ddb261f269b83dacfcd2ade5a681",
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x_hex.get());
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EXPECT_STREQ(
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"e0e2afa3f9b6abe4c698ef6495f1be49a3196c5056acb3763fe4507eec596e88",
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y_hex.get());
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}
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TEST(ECTest, ZeroPadding) {
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// Check that the correct encoding round-trips.
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bssl::UniquePtr<EC_KEY> key =
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DecodeECPrivateKey(kECKeyWithZeros, sizeof(kECKeyWithZeros));
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ASSERT_TRUE(key);
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std::vector<uint8_t> out;
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EXPECT_TRUE(EncodeECPrivateKey(&out, key.get()));
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EXPECT_EQ(Bytes(kECKeyWithZeros), Bytes(out.data(), out.size()));
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// Check the private key encodes correctly, including with the leading zeros.
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EXPECT_EQ(32u, EC_KEY_priv2oct(key.get(), nullptr, 0));
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uint8_t buf[32];
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ASSERT_EQ(32u, EC_KEY_priv2oct(key.get(), buf, sizeof(buf)));
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EXPECT_EQ(Bytes(buf), Bytes(kECKeyWithZerosRawPrivate));
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// Buffer too small.
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EXPECT_EQ(0u, EC_KEY_priv2oct(key.get(), buf, sizeof(buf) - 1));
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// Extra space in buffer.
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uint8_t large_buf[33];
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ASSERT_EQ(32u, EC_KEY_priv2oct(key.get(), large_buf, sizeof(large_buf)));
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EXPECT_EQ(Bytes(buf), Bytes(kECKeyWithZerosRawPrivate));
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// Allocating API.
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uint8_t *buf_alloc;
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size_t len = EC_KEY_priv2buf(key.get(), &buf_alloc);
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ASSERT_GT(len, 0u);
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bssl::UniquePtr<uint8_t> free_buf_alloc(buf_alloc);
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EXPECT_EQ(Bytes(buf_alloc, len), Bytes(kECKeyWithZerosRawPrivate));
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// Keys without leading zeros also parse, but they encode correctly.
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key = DecodeECPrivateKey(kECKeyMissingZeros, sizeof(kECKeyMissingZeros));
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ASSERT_TRUE(key);
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EXPECT_TRUE(EncodeECPrivateKey(&out, key.get()));
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EXPECT_EQ(Bytes(kECKeyWithZeros), Bytes(out.data(), out.size()));
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// Test the key can be constructed with |EC_KEY_oct2*|.
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key.reset(EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
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ASSERT_TRUE(key);
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ASSERT_TRUE(EC_KEY_oct2key(key.get(), kECKeyWithZerosPublic,
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sizeof(kECKeyWithZerosPublic), nullptr));
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ASSERT_TRUE(EC_KEY_oct2priv(key.get(), kECKeyWithZerosRawPrivate,
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sizeof(kECKeyWithZerosRawPrivate)));
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EXPECT_TRUE(EncodeECPrivateKey(&out, key.get()));
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EXPECT_EQ(Bytes(kECKeyWithZeros), Bytes(out.data(), out.size()));
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// |EC_KEY_oct2priv|'s format is fixed-width and must match the group order.
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key.reset(EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
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ASSERT_TRUE(key);
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EXPECT_FALSE(EC_KEY_oct2priv(key.get(), kECKeyWithZerosRawPrivate + 1,
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sizeof(kECKeyWithZerosRawPrivate) - 1));
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uint8_t padded[sizeof(kECKeyWithZerosRawPrivate) + 1] = {0};
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memcpy(padded + 1, kECKeyWithZerosRawPrivate,
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sizeof(kECKeyWithZerosRawPrivate));
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EXPECT_FALSE(EC_KEY_oct2priv(key.get(), padded, sizeof(padded)));
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}
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TEST(ECTest, SpecifiedCurve) {
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// Test keys with specified curves may be decoded.
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bssl::UniquePtr<EC_KEY> key =
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DecodeECPrivateKey(kECKeySpecifiedCurve, sizeof(kECKeySpecifiedCurve));
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ASSERT_TRUE(key);
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// The group should have been interpreted as P-256.
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EXPECT_EQ(NID_X9_62_prime256v1,
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EC_GROUP_get_curve_name(EC_KEY_get0_group(key.get())));
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// Encoding the key should still use named form.
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std::vector<uint8_t> out;
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EXPECT_TRUE(EncodeECPrivateKey(&out, key.get()));
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EXPECT_EQ(Bytes(kECKeyWithoutPublic), Bytes(out.data(), out.size()));
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}
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TEST(ECTest, ArbitraryCurve) {
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// Make a P-256 key and extract the affine coordinates.
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bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
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ASSERT_TRUE(key);
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ASSERT_TRUE(EC_KEY_generate_key(key.get()));
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// Make an arbitrary curve which is identical to P-256.
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static const uint8_t kP[] = {
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0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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};
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static const uint8_t kA[] = {
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0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc,
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};
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static const uint8_t kB[] = {
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0x5a, 0xc6, 0x35, 0xd8, 0xaa, 0x3a, 0x93, 0xe7, 0xb3, 0xeb, 0xbd,
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0x55, 0x76, 0x98, 0x86, 0xbc, 0x65, 0x1d, 0x06, 0xb0, 0xcc, 0x53,
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0xb0, 0xf6, 0x3b, 0xce, 0x3c, 0x3e, 0x27, 0xd2, 0x60, 0x4b,
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};
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static const uint8_t kX[] = {
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0x6b, 0x17, 0xd1, 0xf2, 0xe1, 0x2c, 0x42, 0x47, 0xf8, 0xbc, 0xe6,
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0xe5, 0x63, 0xa4, 0x40, 0xf2, 0x77, 0x03, 0x7d, 0x81, 0x2d, 0xeb,
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0x33, 0xa0, 0xf4, 0xa1, 0x39, 0x45, 0xd8, 0x98, 0xc2, 0x96,
|
||
};
|
||
static const uint8_t kY[] = {
|
||
0x4f, 0xe3, 0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb,
|
||
0x4a, 0x7c, 0x0f, 0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31,
|
||
0x5e, 0xce, 0xcb, 0xb6, 0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5,
|
||
};
|
||
static const uint8_t kOrder[] = {
|
||
0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff,
|
||
0xff, 0xff, 0xff, 0xff, 0xff, 0xbc, 0xe6, 0xfa, 0xad, 0xa7, 0x17,
|
||
0x9e, 0x84, 0xf3, 0xb9, 0xca, 0xc2, 0xfc, 0x63, 0x25, 0x51,
|
||
};
|
||
bssl::UniquePtr<BN_CTX> ctx(BN_CTX_new());
|
||
ASSERT_TRUE(ctx);
|
||
bssl::UniquePtr<BIGNUM> p(BN_bin2bn(kP, sizeof(kP), nullptr));
|
||
ASSERT_TRUE(p);
|
||
bssl::UniquePtr<BIGNUM> a(BN_bin2bn(kA, sizeof(kA), nullptr));
|
||
ASSERT_TRUE(a);
|
||
bssl::UniquePtr<BIGNUM> b(BN_bin2bn(kB, sizeof(kB), nullptr));
|
||
ASSERT_TRUE(b);
|
||
bssl::UniquePtr<BIGNUM> gx(BN_bin2bn(kX, sizeof(kX), nullptr));
|
||
ASSERT_TRUE(gx);
|
||
bssl::UniquePtr<BIGNUM> gy(BN_bin2bn(kY, sizeof(kY), nullptr));
|
||
ASSERT_TRUE(gy);
|
||
bssl::UniquePtr<BIGNUM> order(BN_bin2bn(kOrder, sizeof(kOrder), nullptr));
|
||
ASSERT_TRUE(order);
|
||
|
||
bssl::UniquePtr<EC_GROUP> group(
|
||
EC_GROUP_new_curve_GFp(p.get(), a.get(), b.get(), ctx.get()));
|
||
ASSERT_TRUE(group);
|
||
bssl::UniquePtr<EC_POINT> generator(EC_POINT_new(group.get()));
|
||
ASSERT_TRUE(generator);
|
||
ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(
|
||
group.get(), generator.get(), gx.get(), gy.get(), ctx.get()));
|
||
ASSERT_TRUE(EC_GROUP_set_generator(group.get(), generator.get(), order.get(),
|
||
BN_value_one()));
|
||
|
||
// |group| should not have a curve name.
|
||
EXPECT_EQ(NID_undef, EC_GROUP_get_curve_name(group.get()));
|
||
|
||
// Copy |key| to |key2| using |group|.
|
||
bssl::UniquePtr<EC_KEY> key2(EC_KEY_new());
|
||
ASSERT_TRUE(key2);
|
||
bssl::UniquePtr<EC_POINT> point(EC_POINT_new(group.get()));
|
||
ASSERT_TRUE(point);
|
||
bssl::UniquePtr<BIGNUM> x(BN_new()), y(BN_new());
|
||
ASSERT_TRUE(x);
|
||
ASSERT_TRUE(EC_KEY_set_group(key2.get(), group.get()));
|
||
ASSERT_TRUE(
|
||
EC_KEY_set_private_key(key2.get(), EC_KEY_get0_private_key(key.get())));
|
||
ASSERT_TRUE(EC_POINT_get_affine_coordinates_GFp(
|
||
EC_KEY_get0_group(key.get()), EC_KEY_get0_public_key(key.get()), x.get(),
|
||
y.get(), nullptr));
|
||
ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(group.get(), point.get(),
|
||
x.get(), y.get(), nullptr));
|
||
ASSERT_TRUE(EC_KEY_set_public_key(key2.get(), point.get()));
|
||
|
||
// The key must be valid according to the new group too.
|
||
EXPECT_TRUE(EC_KEY_check_key(key2.get()));
|
||
|
||
// Make a second instance of |group|.
|
||
bssl::UniquePtr<EC_GROUP> group2(
|
||
EC_GROUP_new_curve_GFp(p.get(), a.get(), b.get(), ctx.get()));
|
||
ASSERT_TRUE(group2);
|
||
bssl::UniquePtr<EC_POINT> generator2(EC_POINT_new(group2.get()));
|
||
ASSERT_TRUE(generator2);
|
||
ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(
|
||
group2.get(), generator2.get(), gx.get(), gy.get(), ctx.get()));
|
||
ASSERT_TRUE(EC_GROUP_set_generator(group2.get(), generator2.get(),
|
||
order.get(), BN_value_one()));
|
||
|
||
EXPECT_EQ(0, EC_GROUP_cmp(group.get(), group.get(), NULL));
|
||
EXPECT_EQ(0, EC_GROUP_cmp(group2.get(), group.get(), NULL));
|
||
|
||
// group3 uses the wrong generator.
|
||
bssl::UniquePtr<EC_GROUP> group3(
|
||
EC_GROUP_new_curve_GFp(p.get(), a.get(), b.get(), ctx.get()));
|
||
ASSERT_TRUE(group3);
|
||
bssl::UniquePtr<EC_POINT> generator3(EC_POINT_new(group3.get()));
|
||
ASSERT_TRUE(generator3);
|
||
ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(
|
||
group3.get(), generator3.get(), x.get(), y.get(), ctx.get()));
|
||
ASSERT_TRUE(EC_GROUP_set_generator(group3.get(), generator3.get(),
|
||
order.get(), BN_value_one()));
|
||
|
||
EXPECT_NE(0, EC_GROUP_cmp(group.get(), group3.get(), NULL));
|
||
|
||
#if !defined(BORINGSSL_SHARED_LIBRARY)
|
||
// group4 has non-minimal components that do not fit in |EC_SCALAR| and the
|
||
// future |EC_FELEM|.
|
||
ASSERT_TRUE(bn_resize_words(p.get(), 32));
|
||
ASSERT_TRUE(bn_resize_words(a.get(), 32));
|
||
ASSERT_TRUE(bn_resize_words(b.get(), 32));
|
||
ASSERT_TRUE(bn_resize_words(gx.get(), 32));
|
||
ASSERT_TRUE(bn_resize_words(gy.get(), 32));
|
||
ASSERT_TRUE(bn_resize_words(order.get(), 32));
|
||
|
||
bssl::UniquePtr<EC_GROUP> group4(
|
||
EC_GROUP_new_curve_GFp(p.get(), a.get(), b.get(), ctx.get()));
|
||
ASSERT_TRUE(group4);
|
||
bssl::UniquePtr<EC_POINT> generator4(EC_POINT_new(group4.get()));
|
||
ASSERT_TRUE(generator4);
|
||
ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(
|
||
group4.get(), generator4.get(), gx.get(), gy.get(), ctx.get()));
|
||
ASSERT_TRUE(EC_GROUP_set_generator(group4.get(), generator4.get(),
|
||
order.get(), BN_value_one()));
|
||
|
||
EXPECT_EQ(0, EC_GROUP_cmp(group.get(), group4.get(), NULL));
|
||
#endif
|
||
|
||
// group5 is the same group, but the curve coefficients are passed in
|
||
// unreduced and the caller does not pass in a |BN_CTX|.
|
||
ASSERT_TRUE(BN_sub(a.get(), a.get(), p.get()));
|
||
ASSERT_TRUE(BN_add(b.get(), b.get(), p.get()));
|
||
bssl::UniquePtr<EC_GROUP> group5(
|
||
EC_GROUP_new_curve_GFp(p.get(), a.get(), b.get(), NULL));
|
||
ASSERT_TRUE(group5);
|
||
bssl::UniquePtr<EC_POINT> generator5(EC_POINT_new(group5.get()));
|
||
ASSERT_TRUE(generator5);
|
||
ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(
|
||
group5.get(), generator5.get(), gx.get(), gy.get(), ctx.get()));
|
||
ASSERT_TRUE(EC_GROUP_set_generator(group5.get(), generator5.get(),
|
||
order.get(), BN_value_one()));
|
||
|
||
EXPECT_EQ(0, EC_GROUP_cmp(group.get(), group.get(), NULL));
|
||
EXPECT_EQ(0, EC_GROUP_cmp(group5.get(), group.get(), NULL));
|
||
}
|
||
|
||
TEST(ECTest, SetKeyWithoutGroup) {
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new());
|
||
ASSERT_TRUE(key);
|
||
|
||
// Private keys may not be configured without a group.
|
||
EXPECT_FALSE(EC_KEY_set_private_key(key.get(), BN_value_one()));
|
||
|
||
// Public keys may not be configured without a group.
|
||
EXPECT_FALSE(EC_KEY_set_public_key(key.get(),
|
||
EC_GROUP_get0_generator(EC_group_p256())));
|
||
}
|
||
|
||
TEST(ECTest, SetNULLKey) {
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
|
||
ASSERT_TRUE(key);
|
||
|
||
EXPECT_TRUE(EC_KEY_set_public_key(
|
||
key.get(), EC_GROUP_get0_generator(EC_KEY_get0_group(key.get()))));
|
||
EXPECT_TRUE(EC_KEY_get0_public_key(key.get()));
|
||
|
||
// Setting a NULL public-key should clear the public-key and return zero, in
|
||
// order to match OpenSSL behaviour exactly.
|
||
EXPECT_FALSE(EC_KEY_set_public_key(key.get(), nullptr));
|
||
EXPECT_FALSE(EC_KEY_get0_public_key(key.get()));
|
||
}
|
||
|
||
TEST(ECTest, GroupMismatch) {
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(NID_secp384r1));
|
||
ASSERT_TRUE(key);
|
||
|
||
// Changing a key's group is invalid.
|
||
EXPECT_FALSE(EC_KEY_set_group(key.get(), EC_group_p256()));
|
||
|
||
// Configuring a public key with the wrong group is invalid.
|
||
EXPECT_FALSE(EC_KEY_set_public_key(key.get(),
|
||
EC_GROUP_get0_generator(EC_group_p256())));
|
||
}
|
||
|
||
TEST(ECTest, EmptyKey) {
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new());
|
||
ASSERT_TRUE(key);
|
||
EXPECT_FALSE(EC_KEY_get0_group(key.get()));
|
||
EXPECT_FALSE(EC_KEY_get0_public_key(key.get()));
|
||
EXPECT_FALSE(EC_KEY_get0_private_key(key.get()));
|
||
}
|
||
|
||
static bssl::UniquePtr<BIGNUM> HexToBIGNUM(const char *hex) {
|
||
BIGNUM *bn = nullptr;
|
||
BN_hex2bn(&bn, hex);
|
||
return bssl::UniquePtr<BIGNUM>(bn);
|
||
}
|
||
|
||
// Test that point arithmetic works with custom curves using an arbitrary |a|,
|
||
// rather than -3, as is common (and more efficient).
|
||
TEST(ECTest, BrainpoolP256r1) {
|
||
static const char kP[] =
|
||
"a9fb57dba1eea9bc3e660a909d838d726e3bf623d52620282013481d1f6e5377";
|
||
static const char kA[] =
|
||
"7d5a0975fc2c3057eef67530417affe7fb8055c126dc5c6ce94a4b44f330b5d9";
|
||
static const char kB[] =
|
||
"26dc5c6ce94a4b44f330b5d9bbd77cbf958416295cf7e1ce6bccdc18ff8c07b6";
|
||
static const char kX[] =
|
||
"8bd2aeb9cb7e57cb2c4b482ffc81b7afb9de27e1e3bd23c23a4453bd9ace3262";
|
||
static const char kY[] =
|
||
"547ef835c3dac4fd97f8461a14611dc9c27745132ded8e545c1d54c72f046997";
|
||
static const char kN[] =
|
||
"a9fb57dba1eea9bc3e660a909d838d718c397aa3b561a6f7901e0e82974856a7";
|
||
static const char kD[] =
|
||
"0da21d76fed40dd82ac3314cce91abb585b5c4246e902b238a839609ea1e7ce1";
|
||
static const char kQX[] =
|
||
"3a55e0341cab50452fe27b8a87e4775dec7a9daca94b0d84ad1e9f85b53ea513";
|
||
static const char kQY[] =
|
||
"40088146b33bbbe81b092b41146774b35dd478cf056437cfb35ef0df2d269339";
|
||
|
||
bssl::UniquePtr<BIGNUM> p = HexToBIGNUM(kP), a = HexToBIGNUM(kA),
|
||
b = HexToBIGNUM(kB), x = HexToBIGNUM(kX),
|
||
y = HexToBIGNUM(kY), n = HexToBIGNUM(kN),
|
||
d = HexToBIGNUM(kD), qx = HexToBIGNUM(kQX),
|
||
qy = HexToBIGNUM(kQY);
|
||
ASSERT_TRUE(p && a && b && x && y && n && d && qx && qy);
|
||
|
||
bssl::UniquePtr<EC_GROUP> group(
|
||
EC_GROUP_new_curve_GFp(p.get(), a.get(), b.get(), nullptr));
|
||
ASSERT_TRUE(group);
|
||
bssl::UniquePtr<EC_POINT> g(EC_POINT_new(group.get()));
|
||
ASSERT_TRUE(g);
|
||
ASSERT_TRUE(EC_POINT_set_affine_coordinates_GFp(group.get(), g.get(), x.get(),
|
||
y.get(), nullptr));
|
||
ASSERT_TRUE(
|
||
EC_GROUP_set_generator(group.get(), g.get(), n.get(), BN_value_one()));
|
||
|
||
bssl::UniquePtr<EC_POINT> q(EC_POINT_new(group.get()));
|
||
ASSERT_TRUE(q);
|
||
ASSERT_TRUE(
|
||
EC_POINT_mul(group.get(), q.get(), d.get(), nullptr, nullptr, nullptr));
|
||
ASSERT_TRUE(EC_POINT_get_affine_coordinates_GFp(group.get(), q.get(), x.get(),
|
||
y.get(), nullptr));
|
||
EXPECT_EQ(0, BN_cmp(x.get(), qx.get()));
|
||
EXPECT_EQ(0, BN_cmp(y.get(), qy.get()));
|
||
}
|
||
|
||
class ECCurveTest : public testing::TestWithParam<int> {
|
||
public:
|
||
const EC_GROUP *group() const { return group_; }
|
||
|
||
void SetUp() override {
|
||
group_ = EC_GROUP_new_by_curve_name(GetParam());
|
||
ASSERT_TRUE(group_);
|
||
}
|
||
|
||
private:
|
||
const EC_GROUP *group_;
|
||
};
|
||
|
||
TEST_P(ECCurveTest, SetAffine) {
|
||
// Generate an EC_KEY.
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(GetParam()));
|
||
ASSERT_TRUE(key);
|
||
ASSERT_TRUE(EC_KEY_generate_key(key.get()));
|
||
|
||
// Get the public key's coordinates.
|
||
bssl::UniquePtr<BIGNUM> x(BN_new());
|
||
ASSERT_TRUE(x);
|
||
bssl::UniquePtr<BIGNUM> y(BN_new());
|
||
ASSERT_TRUE(y);
|
||
bssl::UniquePtr<BIGNUM> p(BN_new());
|
||
ASSERT_TRUE(p);
|
||
EXPECT_TRUE(EC_POINT_get_affine_coordinates_GFp(
|
||
group(), EC_KEY_get0_public_key(key.get()), x.get(), y.get(), nullptr));
|
||
EXPECT_TRUE(
|
||
EC_GROUP_get_curve_GFp(group(), p.get(), nullptr, nullptr, nullptr));
|
||
|
||
// Points on the curve should be accepted.
|
||
auto point = bssl::UniquePtr<EC_POINT>(EC_POINT_new(group()));
|
||
ASSERT_TRUE(point);
|
||
EXPECT_TRUE(EC_POINT_set_affine_coordinates_GFp(group(), point.get(), x.get(),
|
||
y.get(), nullptr));
|
||
|
||
// Subtract one from |y| to make the point no longer on the curve.
|
||
EXPECT_TRUE(BN_sub(y.get(), y.get(), BN_value_one()));
|
||
|
||
// Points not on the curve should be rejected.
|
||
bssl::UniquePtr<EC_POINT> invalid_point(EC_POINT_new(group()));
|
||
ASSERT_TRUE(invalid_point);
|
||
EXPECT_FALSE(EC_POINT_set_affine_coordinates_GFp(group(), invalid_point.get(),
|
||
x.get(), y.get(), nullptr));
|
||
|
||
// Coordinates out of range should be rejected.
|
||
EXPECT_TRUE(BN_add(y.get(), y.get(), BN_value_one()));
|
||
EXPECT_TRUE(BN_add(y.get(), y.get(), p.get()));
|
||
|
||
EXPECT_FALSE(EC_POINT_set_affine_coordinates_GFp(group(), invalid_point.get(),
|
||
x.get(), y.get(), nullptr));
|
||
EXPECT_FALSE(
|
||
EC_KEY_set_public_key_affine_coordinates(key.get(), x.get(), y.get()));
|
||
}
|
||
|
||
TEST_P(ECCurveTest, IsOnCurve) {
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(GetParam()));
|
||
ASSERT_TRUE(key);
|
||
ASSERT_TRUE(EC_KEY_generate_key(key.get()));
|
||
|
||
// The generated point is on the curve.
|
||
EXPECT_TRUE(EC_POINT_is_on_curve(group(), EC_KEY_get0_public_key(key.get()),
|
||
nullptr));
|
||
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_new(group()));
|
||
ASSERT_TRUE(p);
|
||
ASSERT_TRUE(EC_POINT_copy(p.get(), EC_KEY_get0_public_key(key.get())));
|
||
|
||
// This should never happen outside of a bug, but |EC_POINT_is_on_curve|
|
||
// rejects points not on the curve.
|
||
OPENSSL_memset(&p->raw.X, 0, sizeof(p->raw.X));
|
||
EXPECT_FALSE(EC_POINT_is_on_curve(group(), p.get(), nullptr));
|
||
|
||
// The point at infinity is always on the curve.
|
||
ASSERT_TRUE(EC_POINT_copy(p.get(), EC_KEY_get0_public_key(key.get())));
|
||
OPENSSL_memset(&p->raw.Z, 0, sizeof(p->raw.Z));
|
||
EXPECT_TRUE(EC_POINT_is_on_curve(group(), p.get(), nullptr));
|
||
}
|
||
|
||
TEST_P(ECCurveTest, Compare) {
|
||
bssl::UniquePtr<EC_KEY> key1(EC_KEY_new_by_curve_name(GetParam()));
|
||
ASSERT_TRUE(key1);
|
||
ASSERT_TRUE(EC_KEY_generate_key(key1.get()));
|
||
const EC_POINT *pub1 = EC_KEY_get0_public_key(key1.get());
|
||
|
||
bssl::UniquePtr<EC_KEY> key2(EC_KEY_new_by_curve_name(GetParam()));
|
||
ASSERT_TRUE(key2);
|
||
ASSERT_TRUE(EC_KEY_generate_key(key2.get()));
|
||
const EC_POINT *pub2 = EC_KEY_get0_public_key(key2.get());
|
||
|
||
// Two different points should not compare as equal.
|
||
EXPECT_EQ(1, EC_POINT_cmp(group(), pub1, pub2, nullptr));
|
||
|
||
// Serialize |pub1| and parse it back out. This gives a point in affine
|
||
// coordinates.
|
||
std::vector<uint8_t> serialized;
|
||
ASSERT_TRUE(
|
||
EncodeECPoint(&serialized, group(), pub1, POINT_CONVERSION_UNCOMPRESSED));
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_new(group()));
|
||
ASSERT_TRUE(p);
|
||
ASSERT_TRUE(EC_POINT_oct2point(group(), p.get(), serialized.data(),
|
||
serialized.size(), nullptr));
|
||
|
||
// The points should be equal.
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), p.get(), pub1, nullptr));
|
||
|
||
// Add something to the point. It no longer compares as equal.
|
||
ASSERT_TRUE(EC_POINT_add(group(), p.get(), p.get(), pub2, nullptr));
|
||
EXPECT_EQ(1, EC_POINT_cmp(group(), p.get(), pub1, nullptr));
|
||
|
||
// Negate |pub2|. It should no longer compare as equal. This tests that we
|
||
// check both x and y coordinate.
|
||
bssl::UniquePtr<EC_POINT> q(EC_POINT_new(group()));
|
||
ASSERT_TRUE(q);
|
||
ASSERT_TRUE(EC_POINT_copy(q.get(), pub2));
|
||
ASSERT_TRUE(EC_POINT_invert(group(), q.get(), nullptr));
|
||
EXPECT_EQ(1, EC_POINT_cmp(group(), q.get(), pub2, nullptr));
|
||
|
||
// Return |p| to the original value. It should be equal to |pub1| again.
|
||
ASSERT_TRUE(EC_POINT_add(group(), p.get(), p.get(), q.get(), nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), p.get(), pub1, nullptr));
|
||
|
||
// Infinity compares as equal to itself, but not other points.
|
||
bssl::UniquePtr<EC_POINT> inf1(EC_POINT_new(group())),
|
||
inf2(EC_POINT_new(group()));
|
||
ASSERT_TRUE(inf1);
|
||
ASSERT_TRUE(inf2);
|
||
ASSERT_TRUE(EC_POINT_set_to_infinity(group(), inf1.get()));
|
||
// |q| is currently -|pub2|.
|
||
ASSERT_TRUE(EC_POINT_add(group(), inf2.get(), pub2, q.get(), nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), inf1.get(), inf2.get(), nullptr));
|
||
EXPECT_EQ(1, EC_POINT_cmp(group(), inf1.get(), p.get(), nullptr));
|
||
}
|
||
|
||
TEST_P(ECCurveTest, GenerateFIPS) {
|
||
// Generate an EC_KEY.
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(GetParam()));
|
||
ASSERT_TRUE(key);
|
||
ASSERT_TRUE(EC_KEY_generate_key_fips(key.get()));
|
||
}
|
||
|
||
TEST_P(ECCurveTest, AddingEqualPoints) {
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(GetParam()));
|
||
ASSERT_TRUE(key);
|
||
ASSERT_TRUE(EC_KEY_generate_key(key.get()));
|
||
|
||
bssl::UniquePtr<EC_POINT> p1(EC_POINT_new(group()));
|
||
ASSERT_TRUE(p1);
|
||
ASSERT_TRUE(EC_POINT_copy(p1.get(), EC_KEY_get0_public_key(key.get())));
|
||
|
||
bssl::UniquePtr<EC_POINT> p2(EC_POINT_new(group()));
|
||
ASSERT_TRUE(p2);
|
||
ASSERT_TRUE(EC_POINT_copy(p2.get(), EC_KEY_get0_public_key(key.get())));
|
||
|
||
bssl::UniquePtr<EC_POINT> double_p1(EC_POINT_new(group()));
|
||
ASSERT_TRUE(double_p1);
|
||
bssl::UniquePtr<BN_CTX> ctx(BN_CTX_new());
|
||
ASSERT_TRUE(ctx);
|
||
ASSERT_TRUE(EC_POINT_dbl(group(), double_p1.get(), p1.get(), ctx.get()));
|
||
|
||
bssl::UniquePtr<EC_POINT> p1_plus_p2(EC_POINT_new(group()));
|
||
ASSERT_TRUE(p1_plus_p2);
|
||
ASSERT_TRUE(
|
||
EC_POINT_add(group(), p1_plus_p2.get(), p1.get(), p2.get(), ctx.get()));
|
||
|
||
EXPECT_EQ(0,
|
||
EC_POINT_cmp(group(), double_p1.get(), p1_plus_p2.get(), ctx.get()))
|
||
<< "A+A != 2A";
|
||
}
|
||
|
||
TEST_P(ECCurveTest, MulZero) {
|
||
bssl::UniquePtr<EC_POINT> point(EC_POINT_new(group()));
|
||
ASSERT_TRUE(point);
|
||
bssl::UniquePtr<BIGNUM> zero(BN_new());
|
||
ASSERT_TRUE(zero);
|
||
BN_zero(zero.get());
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point.get(), zero.get(), nullptr, nullptr,
|
||
nullptr));
|
||
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group(), point.get()))
|
||
<< "g * 0 did not return point at infinity.";
|
||
|
||
// Test that zero times an arbitrary point is also infinity. The generator is
|
||
// used as the arbitrary point.
|
||
bssl::UniquePtr<EC_POINT> generator(EC_POINT_new(group()));
|
||
ASSERT_TRUE(generator);
|
||
ASSERT_TRUE(EC_POINT_mul(group(), generator.get(), BN_value_one(), nullptr,
|
||
nullptr, nullptr));
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point.get(), nullptr, generator.get(),
|
||
zero.get(), nullptr));
|
||
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group(), point.get()))
|
||
<< "p * 0 did not return point at infinity.";
|
||
}
|
||
|
||
// Test that multiplying by the order produces ∞ and, moreover, that callers may
|
||
// do so. |EC_POINT_mul| is almost exclusively used with reduced scalars, with
|
||
// this exception. This comes from consumers following NIST SP 800-56A section
|
||
// 5.6.2.3.2. (Though all our curves have cofactor one, so this check isn't
|
||
// useful.)
|
||
TEST_P(ECCurveTest, MulOrder) {
|
||
// Test that g × order = ∞.
|
||
bssl::UniquePtr<EC_POINT> point(EC_POINT_new(group()));
|
||
ASSERT_TRUE(point);
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point.get(), EC_GROUP_get0_order(group()),
|
||
nullptr, nullptr, nullptr));
|
||
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group(), point.get()))
|
||
<< "g * order did not return point at infinity.";
|
||
|
||
// Test that p × order = ∞, for some arbitrary p.
|
||
bssl::UniquePtr<BIGNUM> forty_two(BN_new());
|
||
ASSERT_TRUE(forty_two);
|
||
ASSERT_TRUE(BN_set_word(forty_two.get(), 42));
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point.get(), forty_two.get(), nullptr,
|
||
nullptr, nullptr));
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point.get(), nullptr, point.get(),
|
||
EC_GROUP_get0_order(group()), nullptr));
|
||
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group(), point.get()))
|
||
<< "p * order did not return point at infinity.";
|
||
}
|
||
|
||
// Test that |EC_POINT_mul| works with out-of-range scalars. The operation will
|
||
// not be constant-time, but we'll compute the right answer.
|
||
TEST_P(ECCurveTest, MulOutOfRange) {
|
||
bssl::UniquePtr<BIGNUM> n_minus_one(BN_dup(EC_GROUP_get0_order(group())));
|
||
ASSERT_TRUE(n_minus_one);
|
||
ASSERT_TRUE(BN_sub_word(n_minus_one.get(), 1));
|
||
|
||
bssl::UniquePtr<BIGNUM> minus_one(BN_new());
|
||
ASSERT_TRUE(minus_one);
|
||
ASSERT_TRUE(BN_one(minus_one.get()));
|
||
BN_set_negative(minus_one.get(), 1);
|
||
|
||
bssl::UniquePtr<BIGNUM> seven(BN_new());
|
||
ASSERT_TRUE(seven);
|
||
ASSERT_TRUE(BN_set_word(seven.get(), 7));
|
||
|
||
bssl::UniquePtr<BIGNUM> ten_n_plus_seven(
|
||
BN_dup(EC_GROUP_get0_order(group())));
|
||
ASSERT_TRUE(ten_n_plus_seven);
|
||
ASSERT_TRUE(BN_mul_word(ten_n_plus_seven.get(), 10));
|
||
ASSERT_TRUE(BN_add_word(ten_n_plus_seven.get(), 7));
|
||
|
||
bssl::UniquePtr<EC_POINT> point1(EC_POINT_new(group())),
|
||
point2(EC_POINT_new(group()));
|
||
ASSERT_TRUE(point1);
|
||
ASSERT_TRUE(point2);
|
||
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point1.get(), n_minus_one.get(), nullptr,
|
||
nullptr, nullptr));
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point2.get(), minus_one.get(), nullptr,
|
||
nullptr, nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), point1.get(), point2.get(), nullptr))
|
||
<< "-1 * G and (n-1) * G did not give the same result";
|
||
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point1.get(), seven.get(), nullptr, nullptr,
|
||
nullptr));
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point2.get(), ten_n_plus_seven.get(),
|
||
nullptr, nullptr, nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), point1.get(), point2.get(), nullptr))
|
||
<< "7 * G and (10n + 7) * G did not give the same result";
|
||
}
|
||
|
||
// Test that 10×∞ + G = G.
|
||
TEST_P(ECCurveTest, Mul) {
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_new(group()));
|
||
ASSERT_TRUE(p);
|
||
bssl::UniquePtr<EC_POINT> result(EC_POINT_new(group()));
|
||
ASSERT_TRUE(result);
|
||
bssl::UniquePtr<BIGNUM> n(BN_new());
|
||
ASSERT_TRUE(n);
|
||
ASSERT_TRUE(EC_POINT_set_to_infinity(group(), p.get()));
|
||
ASSERT_TRUE(BN_set_word(n.get(), 10));
|
||
|
||
// First check that 10×∞ = ∞.
|
||
ASSERT_TRUE(
|
||
EC_POINT_mul(group(), result.get(), nullptr, p.get(), n.get(), nullptr));
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group(), result.get()));
|
||
|
||
// Now check that 10×∞ + G = G.
|
||
const EC_POINT *generator = EC_GROUP_get0_generator(group());
|
||
ASSERT_TRUE(EC_POINT_mul(group(), result.get(), BN_value_one(), p.get(),
|
||
n.get(), nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), result.get(), generator, nullptr));
|
||
}
|
||
|
||
TEST_P(ECCurveTest, MulNonMinimal) {
|
||
bssl::UniquePtr<BIGNUM> forty_two(BN_new());
|
||
ASSERT_TRUE(forty_two);
|
||
ASSERT_TRUE(BN_set_word(forty_two.get(), 42));
|
||
|
||
// Compute g × 42.
|
||
bssl::UniquePtr<EC_POINT> point(EC_POINT_new(group()));
|
||
ASSERT_TRUE(point);
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point.get(), forty_two.get(), nullptr,
|
||
nullptr, nullptr));
|
||
|
||
// Compute it again with a non-minimal 42, much larger than the scalar.
|
||
ASSERT_TRUE(bn_resize_words(forty_two.get(), 64));
|
||
|
||
bssl::UniquePtr<EC_POINT> point2(EC_POINT_new(group()));
|
||
ASSERT_TRUE(point2);
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point2.get(), forty_two.get(), nullptr,
|
||
nullptr, nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), point.get(), point2.get(), nullptr));
|
||
}
|
||
|
||
// Test that EC_KEY_set_private_key rejects invalid values.
|
||
TEST_P(ECCurveTest, SetInvalidPrivateKey) {
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(GetParam()));
|
||
ASSERT_TRUE(key);
|
||
|
||
bssl::UniquePtr<BIGNUM> bn(BN_dup(BN_value_one()));
|
||
ASSERT_TRUE(bn);
|
||
BN_set_negative(bn.get(), 1);
|
||
EXPECT_FALSE(EC_KEY_set_private_key(key.get(), bn.get()))
|
||
<< "Unexpectedly set a key of -1";
|
||
ERR_clear_error();
|
||
|
||
ASSERT_TRUE(
|
||
BN_copy(bn.get(), EC_GROUP_get0_order(EC_KEY_get0_group(key.get()))));
|
||
EXPECT_FALSE(EC_KEY_set_private_key(key.get(), bn.get()))
|
||
<< "Unexpectedly set a key of the group order.";
|
||
ERR_clear_error();
|
||
|
||
BN_zero(bn.get());
|
||
EXPECT_FALSE(EC_KEY_set_private_key(key.get(), bn.get()))
|
||
<< "Unexpectedly set a key of 0";
|
||
ERR_clear_error();
|
||
}
|
||
|
||
TEST_P(ECCurveTest, IgnoreOct2PointReturnValue) {
|
||
bssl::UniquePtr<BIGNUM> forty_two(BN_new());
|
||
ASSERT_TRUE(forty_two);
|
||
ASSERT_TRUE(BN_set_word(forty_two.get(), 42));
|
||
|
||
// Compute g × 42.
|
||
bssl::UniquePtr<EC_POINT> point(EC_POINT_new(group()));
|
||
ASSERT_TRUE(point);
|
||
ASSERT_TRUE(EC_POINT_mul(group(), point.get(), forty_two.get(), nullptr,
|
||
nullptr, nullptr));
|
||
|
||
// Serialize the point.
|
||
std::vector<uint8_t> serialized;
|
||
ASSERT_TRUE(EncodeECPoint(&serialized, group(), point.get(),
|
||
POINT_CONVERSION_UNCOMPRESSED));
|
||
|
||
// Create a serialized point that is not on the curve.
|
||
serialized[serialized.size() - 1]++;
|
||
|
||
ASSERT_FALSE(EC_POINT_oct2point(group(), point.get(), serialized.data(),
|
||
serialized.size(), nullptr));
|
||
// After a failure, |point| should have been set to the generator to defend
|
||
// against code that doesn't check the return value.
|
||
ASSERT_EQ(0, EC_POINT_cmp(group(), point.get(),
|
||
EC_GROUP_get0_generator(group()), nullptr));
|
||
}
|
||
|
||
TEST_P(ECCurveTest, DoubleSpecialCase) {
|
||
const EC_POINT *g = EC_GROUP_get0_generator(group());
|
||
|
||
bssl::UniquePtr<EC_POINT> two_g(EC_POINT_new(group()));
|
||
ASSERT_TRUE(two_g);
|
||
ASSERT_TRUE(EC_POINT_dbl(group(), two_g.get(), g, nullptr));
|
||
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_new(group()));
|
||
ASSERT_TRUE(p);
|
||
ASSERT_TRUE(EC_POINT_mul(group(), p.get(), BN_value_one(), g, BN_value_one(),
|
||
nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), p.get(), two_g.get(), nullptr));
|
||
|
||
EC_SCALAR one;
|
||
ASSERT_TRUE(ec_bignum_to_scalar(group(), &one, BN_value_one()));
|
||
ASSERT_TRUE(
|
||
ec_point_mul_scalar_public(group(), &p->raw, &one, &g->raw, &one));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), p.get(), two_g.get(), nullptr));
|
||
}
|
||
|
||
// This a regression test for a P-224 bug, but we may as well run it for all
|
||
// curves.
|
||
TEST_P(ECCurveTest, P224Bug) {
|
||
// P = -G
|
||
const EC_POINT *g = EC_GROUP_get0_generator(group());
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_dup(g, group()));
|
||
ASSERT_TRUE(p);
|
||
ASSERT_TRUE(EC_POINT_invert(group(), p.get(), nullptr));
|
||
|
||
// Compute 31 * P + 32 * G = G
|
||
bssl::UniquePtr<EC_POINT> ret(EC_POINT_new(group()));
|
||
ASSERT_TRUE(ret);
|
||
bssl::UniquePtr<BIGNUM> bn31(BN_new()), bn32(BN_new());
|
||
ASSERT_TRUE(bn31);
|
||
ASSERT_TRUE(bn32);
|
||
ASSERT_TRUE(BN_set_word(bn31.get(), 31));
|
||
ASSERT_TRUE(BN_set_word(bn32.get(), 32));
|
||
ASSERT_TRUE(EC_POINT_mul(group(), ret.get(), bn32.get(), p.get(), bn31.get(),
|
||
nullptr));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), ret.get(), g, nullptr));
|
||
|
||
// Repeat the computation with |ec_point_mul_scalar_public|, which ties the
|
||
// additions together.
|
||
EC_SCALAR sc31, sc32;
|
||
ASSERT_TRUE(ec_bignum_to_scalar(group(), &sc31, bn31.get()));
|
||
ASSERT_TRUE(ec_bignum_to_scalar(group(), &sc32, bn32.get()));
|
||
ASSERT_TRUE(
|
||
ec_point_mul_scalar_public(group(), &ret->raw, &sc32, &p->raw, &sc31));
|
||
EXPECT_EQ(0, EC_POINT_cmp(group(), ret.get(), g, nullptr));
|
||
}
|
||
|
||
TEST_P(ECCurveTest, GPlusMinusG) {
|
||
const EC_POINT *g = EC_GROUP_get0_generator(group());
|
||
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_dup(g, group()));
|
||
ASSERT_TRUE(p);
|
||
ASSERT_TRUE(EC_POINT_invert(group(), p.get(), nullptr));
|
||
|
||
bssl::UniquePtr<EC_POINT> sum(EC_POINT_new(group()));
|
||
ASSERT_TRUE(sum);
|
||
ASSERT_TRUE(EC_POINT_add(group(), sum.get(), g, p.get(), nullptr));
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group(), sum.get()));
|
||
}
|
||
|
||
// Test that we refuse to encode or decode the point at infinity.
|
||
TEST_P(ECCurveTest, EncodeInfinity) {
|
||
// The point at infinity is encoded as a single zero byte, but we do not
|
||
// support it.
|
||
static const uint8_t kInfinity[] = {0};
|
||
bssl::UniquePtr<EC_POINT> inf(EC_POINT_new(group()));
|
||
ASSERT_TRUE(inf);
|
||
EXPECT_FALSE(EC_POINT_oct2point(group(), inf.get(), kInfinity,
|
||
sizeof(kInfinity), nullptr));
|
||
|
||
// Encoding it also fails.
|
||
ASSERT_TRUE(EC_POINT_set_to_infinity(group(), inf.get()));
|
||
uint8_t buf[128];
|
||
EXPECT_EQ(
|
||
0u, EC_POINT_point2oct(group(), inf.get(), POINT_CONVERSION_UNCOMPRESSED,
|
||
buf, sizeof(buf), nullptr));
|
||
|
||
// Measuring the length of the encoding also fails.
|
||
EXPECT_EQ(
|
||
0u, EC_POINT_point2oct(group(), inf.get(), POINT_CONVERSION_UNCOMPRESSED,
|
||
nullptr, 0, nullptr));
|
||
}
|
||
|
||
static std::vector<int> AllCurves() {
|
||
const size_t num_curves = EC_get_builtin_curves(nullptr, 0);
|
||
std::vector<EC_builtin_curve> curves(num_curves);
|
||
EC_get_builtin_curves(curves.data(), num_curves);
|
||
std::vector<int> nids;
|
||
for (const auto &curve : curves) {
|
||
nids.push_back(curve.nid);
|
||
}
|
||
return nids;
|
||
}
|
||
|
||
static std::string CurveToString(const testing::TestParamInfo<int> ¶ms) {
|
||
return OBJ_nid2sn(params.param);
|
||
}
|
||
|
||
INSTANTIATE_TEST_SUITE_P(All, ECCurveTest, testing::ValuesIn(AllCurves()),
|
||
CurveToString);
|
||
|
||
static const EC_GROUP *GetCurve(FileTest *t, const char *key) {
|
||
std::string curve_name;
|
||
if (!t->GetAttribute(&curve_name, key)) {
|
||
return nullptr;
|
||
}
|
||
|
||
if (curve_name == "P-224") {
|
||
return EC_group_p224();
|
||
}
|
||
if (curve_name == "P-256") {
|
||
return EC_group_p256();
|
||
}
|
||
if (curve_name == "P-384") {
|
||
return EC_group_p384();
|
||
}
|
||
if (curve_name == "P-521") {
|
||
return EC_group_p521();
|
||
}
|
||
|
||
t->PrintLine("Unknown curve '%s'", curve_name.c_str());
|
||
return nullptr;
|
||
}
|
||
|
||
static bssl::UniquePtr<BIGNUM> GetBIGNUM(FileTest *t, const char *key) {
|
||
std::vector<uint8_t> bytes;
|
||
if (!t->GetBytes(&bytes, key)) {
|
||
return nullptr;
|
||
}
|
||
|
||
return bssl::UniquePtr<BIGNUM>(
|
||
BN_bin2bn(bytes.data(), bytes.size(), nullptr));
|
||
}
|
||
|
||
TEST(ECTest, ScalarBaseMultVectors) {
|
||
bssl::UniquePtr<BN_CTX> ctx(BN_CTX_new());
|
||
ASSERT_TRUE(ctx);
|
||
|
||
FileTestGTest(
|
||
"crypto/fipsmodule/ec/ec_scalar_base_mult_tests.txt", [&](FileTest *t) {
|
||
const EC_GROUP *group = GetCurve(t, "Curve");
|
||
ASSERT_TRUE(group);
|
||
bssl::UniquePtr<BIGNUM> n = GetBIGNUM(t, "N");
|
||
ASSERT_TRUE(n);
|
||
bssl::UniquePtr<BIGNUM> x = GetBIGNUM(t, "X");
|
||
ASSERT_TRUE(x);
|
||
bssl::UniquePtr<BIGNUM> y = GetBIGNUM(t, "Y");
|
||
ASSERT_TRUE(y);
|
||
bool is_infinity = BN_is_zero(x.get()) && BN_is_zero(y.get());
|
||
|
||
bssl::UniquePtr<BIGNUM> px(BN_new());
|
||
ASSERT_TRUE(px);
|
||
bssl::UniquePtr<BIGNUM> py(BN_new());
|
||
ASSERT_TRUE(py);
|
||
auto check_point = [&](const EC_POINT *p) {
|
||
if (is_infinity) {
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group, p));
|
||
} else {
|
||
ASSERT_TRUE(EC_POINT_get_affine_coordinates_GFp(
|
||
group, p, px.get(), py.get(), ctx.get()));
|
||
EXPECT_EQ(0, BN_cmp(x.get(), px.get()));
|
||
EXPECT_EQ(0, BN_cmp(y.get(), py.get()));
|
||
}
|
||
};
|
||
|
||
const EC_POINT *g = EC_GROUP_get0_generator(group);
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_new(group));
|
||
ASSERT_TRUE(p);
|
||
// Test single-point multiplication.
|
||
ASSERT_TRUE(
|
||
EC_POINT_mul(group, p.get(), n.get(), nullptr, nullptr, ctx.get()));
|
||
check_point(p.get());
|
||
|
||
ASSERT_TRUE(
|
||
EC_POINT_mul(group, p.get(), nullptr, g, n.get(), ctx.get()));
|
||
check_point(p.get());
|
||
});
|
||
}
|
||
|
||
// These tests take a very long time, but are worth running when we make
|
||
// non-trivial changes to the EC code.
|
||
TEST(ECTest, DISABLED_ScalarBaseMultVectorsTwoPoint) {
|
||
bssl::UniquePtr<BN_CTX> ctx(BN_CTX_new());
|
||
ASSERT_TRUE(ctx);
|
||
|
||
FileTestGTest(
|
||
"crypto/fipsmodule/ec/ec_scalar_base_mult_tests.txt", [&](FileTest *t) {
|
||
const EC_GROUP *group = GetCurve(t, "Curve");
|
||
ASSERT_TRUE(group);
|
||
bssl::UniquePtr<BIGNUM> n = GetBIGNUM(t, "N");
|
||
ASSERT_TRUE(n);
|
||
bssl::UniquePtr<BIGNUM> x = GetBIGNUM(t, "X");
|
||
ASSERT_TRUE(x);
|
||
bssl::UniquePtr<BIGNUM> y = GetBIGNUM(t, "Y");
|
||
ASSERT_TRUE(y);
|
||
bool is_infinity = BN_is_zero(x.get()) && BN_is_zero(y.get());
|
||
|
||
bssl::UniquePtr<BIGNUM> px(BN_new());
|
||
ASSERT_TRUE(px);
|
||
bssl::UniquePtr<BIGNUM> py(BN_new());
|
||
ASSERT_TRUE(py);
|
||
auto check_point = [&](const EC_POINT *p) {
|
||
if (is_infinity) {
|
||
EXPECT_TRUE(EC_POINT_is_at_infinity(group, p));
|
||
} else {
|
||
ASSERT_TRUE(EC_POINT_get_affine_coordinates_GFp(
|
||
group, p, px.get(), py.get(), ctx.get()));
|
||
EXPECT_EQ(0, BN_cmp(x.get(), px.get()));
|
||
EXPECT_EQ(0, BN_cmp(y.get(), py.get()));
|
||
}
|
||
};
|
||
|
||
const EC_POINT *g = EC_GROUP_get0_generator(group);
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_new(group));
|
||
ASSERT_TRUE(p);
|
||
bssl::UniquePtr<BIGNUM> a(BN_new()), b(BN_new());
|
||
for (int i = -64; i < 64; i++) {
|
||
SCOPED_TRACE(i);
|
||
ASSERT_TRUE(BN_set_word(a.get(), abs(i)));
|
||
if (i < 0) {
|
||
ASSERT_TRUE(BN_sub(a.get(), EC_GROUP_get0_order(group), a.get()));
|
||
}
|
||
|
||
ASSERT_TRUE(BN_copy(b.get(), n.get()));
|
||
ASSERT_TRUE(BN_sub(b.get(), b.get(), a.get()));
|
||
if (BN_is_negative(b.get())) {
|
||
ASSERT_TRUE(BN_add(b.get(), b.get(), EC_GROUP_get0_order(group)));
|
||
}
|
||
|
||
ASSERT_TRUE(
|
||
EC_POINT_mul(group, p.get(), a.get(), g, b.get(), ctx.get()));
|
||
check_point(p.get());
|
||
|
||
EC_SCALAR a_scalar, b_scalar;
|
||
ASSERT_TRUE(ec_bignum_to_scalar(group, &a_scalar, a.get()));
|
||
ASSERT_TRUE(ec_bignum_to_scalar(group, &b_scalar, b.get()));
|
||
ASSERT_TRUE(ec_point_mul_scalar_public(group, &p->raw, &a_scalar,
|
||
&g->raw, &b_scalar));
|
||
check_point(p.get());
|
||
}
|
||
});
|
||
}
|
||
|
||
static std::vector<uint8_t> HexToBytes(const char *str) {
|
||
std::vector<uint8_t> ret;
|
||
if (!DecodeHex(&ret, str)) {
|
||
abort();
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
TEST(ECTest, DeriveFromSecret) {
|
||
struct DeriveTest {
|
||
const EC_GROUP *group;
|
||
std::vector<uint8_t> secret;
|
||
std::vector<uint8_t> expected_priv;
|
||
std::vector<uint8_t> expected_pub;
|
||
};
|
||
const DeriveTest kDeriveTests[] = {
|
||
{EC_group_p256(), HexToBytes(""),
|
||
HexToBytes(
|
||
"b98a86a71efb51ebdac4759937b977e9b0c05224675bb2b6a58ba306e237f4b8"),
|
||
HexToBytes(
|
||
"04fbe6cab439918e00231a2ff073cdc25823998864a9eb36f809095a1a919ece875"
|
||
"a145803fbe89a6cde53936e3c6d9c253ed3d38f5f58cae455c27e95645ceda9")},
|
||
{EC_group_p256(), HexToBytes("123456"),
|
||
HexToBytes(
|
||
"44a72bc62087b88e5ab7126766177ed0d8f1ed09ad066cd746527fc201105a7e"),
|
||
HexToBytes(
|
||
"04ec0555cd76e991fef7f5504343937d0f38696db3360a4854052cb0d84a377a5a0"
|
||
"ff64c352755c28692b4ae085c2b817db9a1eddbd22e9cf39c12751e0870791b")},
|
||
{EC_group_p256(), HexToBytes("00000000000000000000000000000000"),
|
||
HexToBytes(
|
||
"7ca1e2c83e6a5f2c1b3e7d58180226f269930c4b9fbe2a275096079630b7c57d"),
|
||
HexToBytes(
|
||
"0442ef70c8fc0fbe383ed0a0da36f39f9a590f3feebc07863cc858c9a8ef0465731"
|
||
"0408c249bd4d61929c54b71ffe056e6b4fa1eb537039b43d1c175f0ceab0f89")},
|
||
{EC_group_p256(),
|
||
HexToBytes(
|
||
"de9c9b35543aaa0fba039e34e8ca9695da3225c7161c9e3a8c70356cac28c780"),
|
||
HexToBytes(
|
||
"659f5abf3b62b9931c29d6ed0722efd2349fa56f54e708cf3272f620f1bc44d0"),
|
||
HexToBytes(
|
||
"046741f806b593bf3a3d4a9d76bdcb9b0d7874633cbea8f42c05e78561f7e8ec362"
|
||
"b9b6f1913ded796fbdafe7f210cea897ac22a4e580c06a60f2659fd09f1830f")},
|
||
{EC_group_p384(), HexToBytes("123456"),
|
||
HexToBytes("95cd90d548997de090c7622708eccb7edc1b1bd78d2422235ad97406dada"
|
||
"076555309da200096f6e4b36c46002beee89"),
|
||
HexToBytes(
|
||
"04007b2d026aa7636fa912c3f970d62bb6c10fa81c8f3290ed90b2d701696d1c6b9"
|
||
"5af88ce13e962996a7ac37e16527cb5d69bd081b8641d07634cf84b438600ec9434"
|
||
"15ac6bd7a0236f7ab0ea31ece67df03fa11646ea2b75e73d1b5e45b75c18")},
|
||
};
|
||
|
||
for (const auto &test : kDeriveTests) {
|
||
SCOPED_TRACE(Bytes(test.secret));
|
||
|
||
bssl::UniquePtr<EC_KEY> key(EC_KEY_derive_from_secret(
|
||
test.group, test.secret.data(), test.secret.size()));
|
||
ASSERT_TRUE(key);
|
||
|
||
std::vector<uint8_t> priv(BN_num_bytes(EC_GROUP_get0_order(test.group)));
|
||
ASSERT_TRUE(BN_bn2bin_padded(priv.data(), priv.size(),
|
||
EC_KEY_get0_private_key(key.get())));
|
||
EXPECT_EQ(Bytes(priv), Bytes(test.expected_priv));
|
||
|
||
uint8_t *pub = nullptr;
|
||
size_t pub_len =
|
||
EC_KEY_key2buf(key.get(), POINT_CONVERSION_UNCOMPRESSED, &pub, nullptr);
|
||
bssl::UniquePtr<uint8_t> free_pub(pub);
|
||
EXPECT_NE(pub_len, 0u);
|
||
EXPECT_EQ(Bytes(pub, pub_len), Bytes(test.expected_pub));
|
||
}
|
||
}
|
||
|
||
TEST(ECTest, HashToCurve) {
|
||
auto hash_to_curve_p384_sha512_draft07 =
|
||
[](const EC_GROUP *group, EC_POINT *out, const uint8_t *dst,
|
||
size_t dst_len, const uint8_t *msg, size_t msg_len) -> int {
|
||
if (EC_GROUP_cmp(group, out->group, NULL) != 0) {
|
||
return 0;
|
||
}
|
||
return ec_hash_to_curve_p384_xmd_sha512_sswu_draft07(group, &out->raw, dst,
|
||
dst_len, msg, msg_len);
|
||
};
|
||
|
||
struct HashToCurveTest {
|
||
int (*hash_to_curve)(const EC_GROUP *group, EC_POINT *out,
|
||
const uint8_t *dst, size_t dst_len, const uint8_t *msg,
|
||
size_t msg_len);
|
||
const EC_GROUP *group;
|
||
const char *dst;
|
||
const char *msg;
|
||
const char *x_hex;
|
||
const char *y_hex;
|
||
};
|
||
const HashToCurveTest kTests[] = {
|
||
// See RFC 9380, appendix J.1.1.
|
||
{&EC_hash_to_curve_p256_xmd_sha256_sswu, EC_group_p256(),
|
||
"QUUX-V01-CS02-with-P256_XMD:SHA-256_SSWU_RO_", "",
|
||
"2c15230b26dbc6fc9a37051158c95b79656e17a1a920b11394ca91"
|
||
"c44247d3e4",
|
||
"8a7a74985cc5c776cdfe4b1f19884970453912e9d31528c060be9a"
|
||
"b5c43e8415"},
|
||
{&EC_hash_to_curve_p256_xmd_sha256_sswu, EC_group_p256(),
|
||
"QUUX-V01-CS02-with-P256_XMD:SHA-256_SSWU_RO_", "abc",
|
||
"0bb8b87485551aa43ed54f009230450b492fead5f1cc91658775da"
|
||
"c4a3388a0f",
|
||
"5c41b3d0731a27a7b14bc0bf0ccded2d8751f83493404c84a88e71"
|
||
"ffd424212e"},
|
||
{&EC_hash_to_curve_p256_xmd_sha256_sswu, EC_group_p256(),
|
||
"QUUX-V01-CS02-with-P256_XMD:SHA-256_SSWU_RO_", "abcdef0123456789",
|
||
"65038ac8f2b1def042a5df0b33b1f4eca6bff7cb0f9c6c15268118"
|
||
"64e544ed80",
|
||
"cad44d40a656e7aff4002a8de287abc8ae0482b5ae825822bb870d"
|
||
"6df9b56ca3"},
|
||
{&EC_hash_to_curve_p256_xmd_sha256_sswu, EC_group_p256(),
|
||
"QUUX-V01-CS02-with-P256_XMD:SHA-256_SSWU_RO_",
|
||
"q128_qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq"
|
||
"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq"
|
||
"qqqqqqqqqqqqqqqqqqqqqqqqq",
|
||
"4be61ee205094282ba8a2042bcb48d88dfbb609301c49aa8b07853"
|
||
"3dc65a0b5d",
|
||
"98f8df449a072c4721d241a3b1236d3caccba603f916ca680f4539"
|
||
"d2bfb3c29e"},
|
||
{&EC_hash_to_curve_p256_xmd_sha256_sswu, EC_group_p256(),
|
||
"QUUX-V01-CS02-with-P256_XMD:SHA-256_SSWU_RO_",
|
||
"a512_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
|
||
"457ae2981f70ca85d8e24c308b14db22f3e3862c5ea0f652ca38b5"
|
||
"e49cd64bc5",
|
||
"ecb9f0eadc9aeed232dabc53235368c1394c78de05dd96893eefa6"
|
||
"2b0f4757dc"},
|
||
|
||
// See draft-irtf-cfrg-hash-to-curve-07, appendix G.2.1.
|
||
{hash_to_curve_p384_sha512_draft07, EC_group_p384(),
|
||
"P384_XMD:SHA-512_SSWU_RO_TESTGEN", "",
|
||
"2fc0b9efdd63a8e43b4db88dc12f03c798f6fd91bccac0c9096185"
|
||
"4386e58fdc54fc2a01f0f358759054ce1f9b762025",
|
||
"949b936fabb72cdb02cd7980b86cb6a3adf286658e81301648851d"
|
||
"b8a49d9bec00ccb57698d559fc5960fa5030a8e54b"},
|
||
{hash_to_curve_p384_sha512_draft07, EC_group_p384(),
|
||
"P384_XMD:SHA-512_SSWU_RO_TESTGEN", "abc",
|
||
"4f3338035391e8ce8ce40c974136f0edc97f392ffd44a643338741"
|
||
"8ed1b8c2603487e1688ec151f048fbc6b2c138c92f",
|
||
"152b90aef6558be328a3168855fb1906452e7167b0f7c8a56ff9d4"
|
||
"fa87d6fb522cdf8e409db54418b2c764fd26260757"},
|
||
{hash_to_curve_p384_sha512_draft07, EC_group_p384(),
|
||
"P384_XMD:SHA-512_SSWU_RO_TESTGEN", "abcdef0123456789",
|
||
"e9e5d7ac397e123d060ad44301cbc8eb972f6e64ebcff29dcc9b9a"
|
||
"10357902aace2240c580fec85e5b427d98b4e80703",
|
||
"916cb8963521ad75105be43cc4148e5a5bbb4fcf107f1577e4f7fa"
|
||
"3ca58cd786aa76890c8e687d2353393bc16c78ec4d"},
|
||
{hash_to_curve_p384_sha512_draft07, EC_group_p384(),
|
||
"P384_XMD:SHA-512_SSWU_RO_TESTGEN",
|
||
"a512_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
|
||
"41941db59a7b8b633bd5bfa462f1e29a9f18e5a341445d90fc6eb9"
|
||
"37f2913224287b9dfb64742851f760eb14ca115ff9",
|
||
"1510e764f1be968d661b7aaecb26a6d38c98e5205ca150f0ae426d"
|
||
"2c3983c68e3a9ffb283c6ae4891d891b5705500475"},
|
||
};
|
||
|
||
for (const auto &test : kTests) {
|
||
SCOPED_TRACE(test.dst);
|
||
SCOPED_TRACE(test.msg);
|
||
|
||
bssl::UniquePtr<EC_POINT> p(EC_POINT_new(test.group));
|
||
ASSERT_TRUE(p);
|
||
ASSERT_TRUE(test.hash_to_curve(
|
||
test.group, p.get(), reinterpret_cast<const uint8_t *>(test.dst),
|
||
strlen(test.dst), reinterpret_cast<const uint8_t *>(test.msg),
|
||
strlen(test.msg)));
|
||
|
||
std::vector<uint8_t> buf;
|
||
ASSERT_TRUE(EncodeECPoint(&buf, test.group, p.get(),
|
||
POINT_CONVERSION_UNCOMPRESSED));
|
||
size_t field_len = (buf.size() - 1) / 2;
|
||
EXPECT_EQ(test.x_hex, EncodeHex(bssl::Span(buf).subspan(1, field_len)));
|
||
EXPECT_EQ(test.y_hex,
|
||
EncodeHex(bssl::Span(buf).subspan(1 + field_len, field_len)));
|
||
}
|
||
|
||
// hash-to-curve functions should check for the wrong group.
|
||
EC_JACOBIAN raw;
|
||
bssl::UniquePtr<EC_POINT> p_p384(EC_POINT_new(EC_group_p384()));
|
||
ASSERT_TRUE(p_p384);
|
||
bssl::UniquePtr<EC_POINT> p_p224(EC_POINT_new(EC_group_p224()));
|
||
ASSERT_TRUE(p_p224);
|
||
static const uint8_t kDST[] = {0, 1, 2, 3};
|
||
static const uint8_t kMessage[] = {4, 5, 6, 7};
|
||
EXPECT_FALSE(ec_hash_to_curve_p384_xmd_sha384_sswu(
|
||
EC_group_p224(), &raw, kDST, sizeof(kDST), kMessage, sizeof(kMessage)));
|
||
EXPECT_FALSE(EC_hash_to_curve_p384_xmd_sha384_sswu(
|
||
EC_group_p224(), p_p224.get(), kDST, sizeof(kDST), kMessage,
|
||
sizeof(kMessage)));
|
||
EXPECT_FALSE(EC_hash_to_curve_p384_xmd_sha384_sswu(
|
||
EC_group_p224(), p_p384.get(), kDST, sizeof(kDST), kMessage,
|
||
sizeof(kMessage)));
|
||
EXPECT_FALSE(EC_hash_to_curve_p384_xmd_sha384_sswu(
|
||
EC_group_p384(), p_p224.get(), kDST, sizeof(kDST), kMessage,
|
||
sizeof(kMessage)));
|
||
|
||
// Zero-length DSTs are not allowed.
|
||
EXPECT_FALSE(ec_hash_to_curve_p384_xmd_sha384_sswu(
|
||
EC_group_p384(), &raw, nullptr, 0, kMessage, sizeof(kMessage)));
|
||
}
|
||
|
||
TEST(ECTest, HashToScalar) {
|
||
struct HashToScalarTest {
|
||
int (*hash_to_scalar)(const EC_GROUP *group, EC_SCALAR *out,
|
||
const uint8_t *dst, size_t dst_len,
|
||
const uint8_t *msg, size_t msg_len);
|
||
const EC_GROUP *group;
|
||
const char *dst;
|
||
const char *msg;
|
||
const char *result_hex;
|
||
};
|
||
const HashToScalarTest kTests[] = {
|
||
{&ec_hash_to_scalar_p384_xmd_sha512_draft07, EC_group_p384(),
|
||
"P384_XMD:SHA-512_SCALAR_TEST", "",
|
||
"9687acc2de56c3cf94c0e05b6811a21aa480092254ec0532bdce63"
|
||
"140ecd340f09dc2d45d77e21fb0aa76f7707b8a676"},
|
||
{&ec_hash_to_scalar_p384_xmd_sha512_draft07, EC_group_p384(),
|
||
"P384_XMD:SHA-512_SCALAR_TEST", "abcdef0123456789",
|
||
"8f8076022a68233cbcecaceae68c2068f132724f001caa78619eff"
|
||
"1ffc58fa871db73fe9034fc9cf853c384ed34b5666"},
|
||
{&ec_hash_to_scalar_p384_xmd_sha512_draft07, EC_group_p384(),
|
||
"P384_XMD:SHA-512_SCALAR_TEST",
|
||
"a512_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
|
||
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
|
||
"750f2fae7d2b2f41ac737d180c1d4363d85a1504798b4976d40921"
|
||
"1ddb3651c13a5b4daba9975cdfce18336791131915"},
|
||
};
|
||
|
||
for (const auto &test : kTests) {
|
||
SCOPED_TRACE(test.dst);
|
||
SCOPED_TRACE(test.msg);
|
||
|
||
EC_SCALAR scalar;
|
||
ASSERT_TRUE(test.hash_to_scalar(
|
||
test.group, &scalar, reinterpret_cast<const uint8_t *>(test.dst),
|
||
strlen(test.dst), reinterpret_cast<const uint8_t *>(test.msg),
|
||
strlen(test.msg)));
|
||
uint8_t buf[EC_MAX_BYTES];
|
||
size_t len;
|
||
ec_scalar_to_bytes(test.group, buf, &len, &scalar);
|
||
EXPECT_EQ(test.result_hex, EncodeHex(bssl::Span(buf, len)));
|
||
}
|
||
|
||
// hash-to-scalar functions should check for the wrong group.
|
||
EC_SCALAR scalar;
|
||
static const uint8_t kDST[] = {0, 1, 2, 3};
|
||
static const uint8_t kMessage[] = {4, 5, 6, 7};
|
||
EXPECT_FALSE(ec_hash_to_scalar_p384_xmd_sha512_draft07(
|
||
EC_group_p224(), &scalar, kDST, sizeof(kDST), kMessage,
|
||
sizeof(kMessage)));
|
||
}
|
||
|
||
} // namespace
|