/* Copyright (c) 2017, Google Inc.

 *

 * Permission to use, copy, modify, and/or distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY

 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION

 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN

 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#ifndef HEADER_SSL_TEST_FUZZER

#define HEADER_SSL_TEST_FUZZER

#include <assert.h>

#include <stdlib.h>

#include <string.h>

#include <algorithm>

#include <vector>

#include <openssl/bio.h>

#include <openssl/bytestring.h>

#include <openssl/err.h>

#include <openssl/evp.h>

#include <openssl/hpke.h>

#include <openssl/rand.h>

#include <openssl/rsa.h>

#include <openssl/ssl.h>

#include <openssl/x509.h>

#include "../../crypto/internal.h"

#include "./fuzzer_tags.h"

namespace {

const uint8_t kP256KeyPKCS8[] = {

    0x30, 0x81, 0x87, 0x02, 0x01, 0x00, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86,

    0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d,

    0x03, 0x01, 0x07, 0x04, 0x6d, 0x30, 0x6b, 0x02, 0x01, 0x01, 0x04, 0x20,

    0x43, 0x09, 0xc0, 0x67, 0x75, 0x21, 0x47, 0x9d, 0xa8, 0xfa, 0x16, 0xdf,

    0x15, 0x73, 0x61, 0x34, 0x68, 0x6f, 0xe3, 0x8e, 0x47, 0x91, 0x95, 0xab,

    0x79, 0x4a, 0x72, 0x14, 0xcb, 0xe2, 0x49, 0x4f, 0xa1, 0x44, 0x03, 0x42,

    0x00, 0x04, 0xde, 0x09, 0x08, 0x07, 0x03, 0x2e, 0x8f, 0x37, 0x9a, 0xd5,

    0xad, 0xe5, 0xc6, 0x9d, 0xd4, 0x63, 0xc7, 0x4a, 0xe7, 0x20, 0xcb, 0x90,

    0xa0, 0x1f, 0x18, 0x18, 0x72, 0xb5, 0x21, 0x88, 0x38, 0xc0, 0xdb, 0xba,

    0xf6, 0x99, 0xd8, 0xa5, 0x3b, 0x83, 0xe9, 0xe3, 0xd5, 0x61, 0x99, 0x73,

    0x42, 0xc6, 0x6c, 0xe8, 0x0a, 0x95, 0x40, 0x41, 0x3b, 0x0d, 0x10, 0xa7,

    0x4a, 0x93, 0xdb, 0x5a, 0xe7, 0xec,

};

const uint8_t kOCSPResponse[] = {0x01, 0x02, 0x03, 0x04};

const uint8_t kSCT[] = {0x00, 0x06, 0x00, 0x04, 0x05, 0x06, 0x07, 0x08};

const uint8_t kCertificateDER[] = {

    0x30, 0x82, 0x02, 0xff, 0x30, 0x82, 0x01, 0xe7, 0xa0, 0x03, 0x02, 0x01,

    0x02, 0x02, 0x11, 0x00, 0xb1, 0x84, 0xee, 0x34, 0x99, 0x98, 0x76, 0xfb,

    0x6f, 0xb2, 0x15, 0xc8, 0x47, 0x79, 0x05, 0x9b, 0x30, 0x0d, 0x06, 0x09,

    0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30,

    0x12, 0x31, 0x10, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, 0x07,

    0x41, 0x63, 0x6d, 0x65, 0x20, 0x43, 0x6f, 0x30, 0x1e, 0x17, 0x0d, 0x31,

    0x35, 0x31, 0x31, 0x30, 0x37, 0x30, 0x30, 0x32, 0x34, 0x35, 0x36, 0x5a,

    0x17, 0x0d, 0x31, 0x36, 0x31, 0x31, 0x30, 0x36, 0x30, 0x30, 0x32, 0x34,

    0x35, 0x36, 0x5a, 0x30, 0x12, 0x31, 0x10, 0x30, 0x0e, 0x06, 0x03, 0x55,

    0x04, 0x0a, 0x13, 0x07, 0x41, 0x63, 0x6d, 0x65, 0x20, 0x43, 0x6f, 0x30,

    0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,

    0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, 0x30,

    0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xce, 0x47, 0xcb, 0x11,

    0xbb, 0xd2, 0x9d, 0x8e, 0x9e, 0xd2, 0x1e, 0x14, 0xaf, 0xc7, 0xea, 0xb6,

    0xc9, 0x38, 0x2a, 0x6f, 0xb3, 0x7e, 0xfb, 0xbc, 0xfc, 0x59, 0x42, 0xb9,

    0x56, 0xf0, 0x4c, 0x3f, 0xf7, 0x31, 0x84, 0xbe, 0xac, 0x03, 0x9e, 0x71,

    0x91, 0x85, 0xd8, 0x32, 0xbd, 0x00, 0xea, 0xac, 0x65, 0xf6, 0x03, 0xc8,

    0x0f, 0x8b, 0xfd, 0x6e, 0x58, 0x88, 0x04, 0x41, 0x92, 0x74, 0xa6, 0x57,

    0x2e, 0x8e, 0x88, 0xd5, 0x3d, 0xda, 0x14, 0x3e, 0x63, 0x88, 0x22, 0xe3,

    0x53, 0xe9, 0xba, 0x39, 0x09, 0xac, 0xfb, 0xd0, 0x4c, 0xf2, 0x3c, 0x20,

    0xd6, 0x97, 0xe6, 0xed, 0xf1, 0x62, 0x1e, 0xe5, 0xc9, 0x48, 0xa0, 0xca,

    0x2e, 0x3c, 0x14, 0x5a, 0x82, 0xd4, 0xed, 0xb1, 0xe3, 0x43, 0xc1, 0x2a,

    0x59, 0xa5, 0xb9, 0xc8, 0x48, 0xa7, 0x39, 0x23, 0x74, 0xa7, 0x37, 0xb0,

    0x6f, 0xc3, 0x64, 0x99, 0x6c, 0xa2, 0x82, 0xc8, 0xf6, 0xdb, 0x86, 0x40,

    0xce, 0xd1, 0x85, 0x9f, 0xce, 0x69, 0xf4, 0x15, 0x2a, 0x23, 0xca, 0xea,

    0xb7, 0x7b, 0xdf, 0xfb, 0x43, 0x5f, 0xff, 0x7a, 0x49, 0x49, 0x0e, 0xe7,

    0x02, 0x51, 0x45, 0x13, 0xe8, 0x90, 0x64, 0x21, 0x0c, 0x26, 0x2b, 0x5d,

    0xfc, 0xe4, 0xb5, 0x86, 0x89, 0x43, 0x22, 0x4c, 0xf3, 0x3b, 0xf3, 0x09,

    0xc4, 0xa4, 0x10, 0x80, 0xf2, 0x46, 0xe2, 0x46, 0x8f, 0x76, 0x50, 0xbf,

    0xaf, 0x2b, 0x90, 0x1b, 0x78, 0xc7, 0xcf, 0xc1, 0x77, 0xd0, 0xfb, 0xa9,

    0xfb, 0xc9, 0x66, 0x5a, 0xc5, 0x9b, 0x31, 0x41, 0x67, 0x01, 0xbe, 0x33,

    0x10, 0xba, 0x05, 0x58, 0xed, 0x76, 0x53, 0xde, 0x5d, 0xc1, 0xe8, 0xbb,

    0x9f, 0xf1, 0xcd, 0xfb, 0xdf, 0x64, 0x7f, 0xd7, 0x18, 0xab, 0x0f, 0x94,

    0x28, 0x95, 0x4a, 0xcc, 0x6a, 0xa9, 0x50, 0xc7, 0x05, 0x47, 0x10, 0x41,

    0x02, 0x03, 0x01, 0x00, 0x01, 0xa3, 0x50, 0x30, 0x4e, 0x30, 0x0e, 0x06,

    0x03, 0x55, 0x1d, 0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x05,

    0xa0, 0x30, 0x13, 0x06, 0x03, 0x55, 0x1d, 0x25, 0x04, 0x0c, 0x30, 0x0a,

    0x06, 0x08, 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x01, 0x30, 0x0c,

    0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x02, 0x30, 0x00,

    0x30, 0x19, 0x06, 0x03, 0x55, 0x1d, 0x11, 0x04, 0x12, 0x30, 0x10, 0x82,

    0x0e, 0x66, 0x75, 0x7a, 0x7a, 0x2e, 0x62, 0x6f, 0x72, 0x69, 0x6e, 0x67,

    0x73, 0x73, 0x6c, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,

    0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x03, 0x82, 0x01, 0x01, 0x00, 0x92,

    0xde, 0xef, 0x96, 0x06, 0x7b, 0xff, 0x71, 0x7d, 0x4e, 0xa0, 0x7d, 0xae,

    0xb8, 0x22, 0xb4, 0x2c, 0xf7, 0x96, 0x9c, 0x37, 0x1d, 0x8f, 0xe7, 0xd9,

    0x47, 0xff, 0x3f, 0xe9, 0x35, 0x95, 0x0e, 0xdd, 0xdc, 0x7f, 0xc8, 0x8a,

    0x1e, 0x36, 0x1d, 0x38, 0x47, 0xfc, 0x76, 0xd2, 0x1f, 0x98, 0xa1, 0x36,

    0xac, 0xc8, 0x70, 0x38, 0x0a, 0x3d, 0x51, 0x8d, 0x0f, 0x03, 0x1b, 0xef,

    0x62, 0xa1, 0xcb, 0x2b, 0x4a, 0x8c, 0x12, 0x2b, 0x54, 0x50, 0x9a, 0x6b,

    0xfe, 0xaf, 0xd9, 0xf6, 0xbf, 0x58, 0x11, 0x58, 0x5e, 0xe5, 0x86, 0x1e,

    0x3b, 0x6b, 0x30, 0x7e, 0x72, 0x89, 0xe8, 0x6b, 0x7b, 0xb7, 0xaf, 0xef,

    0x8b, 0xa9, 0x3e, 0xb0, 0xcd, 0x0b, 0xef, 0xb0, 0x0c, 0x96, 0x2b, 0xc5,

    0x3b, 0xd5, 0xf1, 0xc2, 0xae, 0x3a, 0x60, 0xd9, 0x0f, 0x75, 0x37, 0x55,

    0x4d, 0x62, 0xd2, 0xed, 0x96, 0xac, 0x30, 0x6b, 0xda, 0xa1, 0x48, 0x17,

    0x96, 0x23, 0x85, 0x9a, 0x57, 0x77, 0xe9, 0x22, 0xa2, 0x37, 0x03, 0xba,

    0x49, 0x77, 0x40, 0x3b, 0x76, 0x4b, 0xda, 0xc1, 0x04, 0x57, 0x55, 0x34,

    0x22, 0x83, 0x45, 0x29, 0xab, 0x2e, 0x11, 0xff, 0x0d, 0xab, 0x55, 0xb1,

    0xa7, 0x58, 0x59, 0x05, 0x25, 0xf9, 0x1e, 0x3d, 0xb7, 0xac, 0x04, 0x39,

    0x2c, 0xf9, 0xaf, 0xb8, 0x68, 0xfb, 0x8e, 0x35, 0x71, 0x32, 0xff, 0x70,

    0xe9, 0x46, 0x6d, 0x5c, 0x06, 0x90, 0x88, 0x23, 0x48, 0x0c, 0x50, 0xeb,

    0x0a, 0xa9, 0xae, 0xe8, 0xfc, 0xbe, 0xa5, 0x76, 0x94, 0xd7, 0x64, 0x22,

    0x38, 0x98, 0x17, 0xa4, 0x3a, 0xa7, 0x59, 0x9f, 0x1d, 0x3b, 0x75, 0x90,

    0x1a, 0x81, 0xef, 0x19, 0xfb, 0x2b, 0xb7, 0xa7, 0x64, 0x61, 0x22, 0xa4,

    0x6f, 0x7b, 0xfa, 0x58, 0xbb, 0x8c, 0x4e, 0x77, 0x67, 0xd0, 0x5d, 0x58,

    0x76, 0x8a, 0xbb,

};

const uint8_t kRSAPrivateKeyDER[] = {

    0x30, 0x82, 0x04, 0xa5, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00,

    0xce, 0x47, 0xcb, 0x11, 0xbb, 0xd2, 0x9d, 0x8e, 0x9e, 0xd2, 0x1e, 0x14,

    0xaf, 0xc7, 0xea, 0xb6, 0xc9, 0x38, 0x2a, 0x6f, 0xb3, 0x7e, 0xfb, 0xbc,

    0xfc, 0x59, 0x42, 0xb9, 0x56, 0xf0, 0x4c, 0x3f, 0xf7, 0x31, 0x84, 0xbe,

    0xac, 0x03, 0x9e, 0x71, 0x91, 0x85, 0xd8, 0x32, 0xbd, 0x00, 0xea, 0xac,

    0x65, 0xf6, 0x03, 0xc8, 0x0f, 0x8b, 0xfd, 0x6e, 0x58, 0x88, 0x04, 0x41,

    0x92, 0x74, 0xa6, 0x57, 0x2e, 0x8e, 0x88, 0xd5, 0x3d, 0xda, 0x14, 0x3e,

    0x63, 0x88, 0x22, 0xe3, 0x53, 0xe9, 0xba, 0x39, 0x09, 0xac, 0xfb, 0xd0,

    0x4c, 0xf2, 0x3c, 0x20, 0xd6, 0x97, 0xe6, 0xed, 0xf1, 0x62, 0x1e, 0xe5,

    0xc9, 0x48, 0xa0, 0xca, 0x2e, 0x3c, 0x14, 0x5a, 0x82, 0xd4, 0xed, 0xb1,

    0xe3, 0x43, 0xc1, 0x2a, 0x59, 0xa5, 0xb9, 0xc8, 0x48, 0xa7, 0x39, 0x23,

    0x74, 0xa7, 0x37, 0xb0, 0x6f, 0xc3, 0x64, 0x99, 0x6c, 0xa2, 0x82, 0xc8,

    0xf6, 0xdb, 0x86, 0x40, 0xce, 0xd1, 0x85, 0x9f, 0xce, 0x69, 0xf4, 0x15,

    0x2a, 0x23, 0xca, 0xea, 0xb7, 0x7b, 0xdf, 0xfb, 0x43, 0x5f, 0xff, 0x7a,

    0x49, 0x49, 0x0e, 0xe7, 0x02, 0x51, 0x45, 0x13, 0xe8, 0x90, 0x64, 0x21,

    0x0c, 0x26, 0x2b, 0x5d, 0xfc, 0xe4, 0xb5, 0x86, 0x89, 0x43, 0x22, 0x4c,

    0xf3, 0x3b, 0xf3, 0x09, 0xc4, 0xa4, 0x10, 0x80, 0xf2, 0x46, 0xe2, 0x46,

    0x8f, 0x76, 0x50, 0xbf, 0xaf, 0x2b, 0x90, 0x1b, 0x78, 0xc7, 0xcf, 0xc1,

    0x77, 0xd0, 0xfb, 0xa9, 0xfb, 0xc9, 0x66, 0x5a, 0xc5, 0x9b, 0x31, 0x41,

    0x67, 0x01, 0xbe, 0x33, 0x10, 0xba, 0x05, 0x58, 0xed, 0x76, 0x53, 0xde,

    0x5d, 0xc1, 0xe8, 0xbb, 0x9f, 0xf1, 0xcd, 0xfb, 0xdf, 0x64, 0x7f, 0xd7,

    0x18, 0xab, 0x0f, 0x94, 0x28, 0x95, 0x4a, 0xcc, 0x6a, 0xa9, 0x50, 0xc7,

    0x05, 0x47, 0x10, 0x41, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x82, 0x01,

    0x01, 0x00, 0xa8, 0x47, 0xb9, 0x4a, 0x06, 0x47, 0x93, 0x71, 0x3d, 0xef,

    0x7b, 0xca, 0xb4, 0x7c, 0x0a, 0xe6, 0x82, 0xd0, 0xe7, 0x0d, 0xa9, 0x08,

    0xf6, 0xa4, 0xfd, 0xd8, 0x73, 0xae, 0x6f, 0x56, 0x29, 0x5e, 0x25, 0x72,

    0xa8, 0x30, 0x44, 0x73, 0xcf, 0x56, 0x26, 0xb9, 0x61, 0xde, 0x42, 0x81,

    0xf4, 0xf0, 0x1f, 0x5d, 0xcb, 0x47, 0xf2, 0x26, 0xe9, 0xe0, 0x93, 0x28,

    0xa3, 0x10, 0x3b, 0x42, 0x1e, 0x51, 0x11, 0x12, 0x06, 0x5e, 0xaf, 0xce,

    0xb0, 0xa5, 0x14, 0xdd, 0x82, 0x58, 0xa1, 0xa4, 0x12, 0xdf, 0x65, 0x1d,

    0x51, 0x70, 0x64, 0xd5, 0x58, 0x68, 0x11, 0xa8, 0x6a, 0x23, 0xc2, 0xbf,

    0xa1, 0x25, 0x24, 0x47, 0xb3, 0xa4, 0x3c, 0x83, 0x96, 0xb7, 0x1f, 0xf4,

    0x44, 0xd4, 0xd1, 0xe9, 0xfc, 0x33, 0x68, 0x5e, 0xe2, 0x68, 0x99, 0x9c,

    0x91, 0xe8, 0x72, 0xc9, 0xd7, 0x8c, 0x80, 0x20, 0x8e, 0x77, 0x83, 0x4d,

    0xe4, 0xab, 0xf9, 0x74, 0xa1, 0xdf, 0xd3, 0xc0, 0x0d, 0x5b, 0x05, 0x51,

    0xc2, 0x6f, 0xb2, 0x91, 0x02, 0xec, 0xc0, 0x02, 0x1a, 0x5c, 0x91, 0x05,

    0xf1, 0xe3, 0xfa, 0x65, 0xc2, 0xad, 0x24, 0xe6, 0xe5, 0x3c, 0xb6, 0x16,

    0xf1, 0xa1, 0x67, 0x1a, 0x9d, 0x37, 0x56, 0xbf, 0x01, 0xd7, 0x3b, 0x35,

    0x30, 0x57, 0x73, 0xf4, 0xf0, 0x5e, 0xa7, 0xe8, 0x0a, 0xc1, 0x94, 0x17,

    0xcf, 0x0a, 0xbd, 0xf5, 0x31, 0xa7, 0x2d, 0xf7, 0xf5, 0xd9, 0x8c, 0xc2,

    0x01, 0xbd, 0xda, 0x16, 0x8e, 0xb9, 0x30, 0x40, 0xa6, 0x6e, 0xbd, 0xcd,

    0x4d, 0x84, 0x67, 0x4e, 0x0b, 0xce, 0xd5, 0xef, 0xf8, 0x08, 0x63, 0x02,

    0xc6, 0xc7, 0xf7, 0x67, 0x92, 0xe2, 0x23, 0x9d, 0x27, 0x22, 0x1d, 0xc6,

    0x67, 0x5e, 0x66, 0xbf, 0x03, 0xb8, 0xa9, 0x67, 0xd4, 0x39, 0xd8, 0x75,

    0xfa, 0xe8, 0xed, 0x56, 0xb8, 0x81, 0x02, 0x81, 0x81, 0x00, 0xf7, 0x46,

    0x68, 0xc6, 0x13, 0xf8, 0xba, 0x0f, 0x83, 0xdb, 0x05, 0xa8, 0x25, 0x00,

    0x70, 0x9c, 0x9e, 0x8b, 0x12, 0x34, 0x0d, 0x96, 0xcf, 0x0d, 0x98, 0x9b,

    0x8d, 0x9c, 0x96, 0x78, 0xd1, 0x3c, 0x01, 0x8c, 0xb9, 0x35, 0x5c, 0x20,

    0x42, 0xb4, 0x38, 0xe3, 0xd6, 0x54, 0xe7, 0x55, 0xd6, 0x26, 0x8a, 0x0c,

    0xf6, 0x1f, 0xe0, 0x04, 0xc1, 0x22, 0x42, 0x19, 0x61, 0xc4, 0x94, 0x7c,

    0x07, 0x2e, 0x80, 0x52, 0xfe, 0x8d, 0xe6, 0x92, 0x3a, 0x91, 0xfe, 0x72,

    0x99, 0xe1, 0x2a, 0x73, 0x76, 0xb1, 0x24, 0x20, 0x67, 0xde, 0x28, 0xcb,

    0x0e, 0xe6, 0x52, 0xb5, 0xfa, 0xfb, 0x8b, 0x1e, 0x6a, 0x1d, 0x09, 0x26,

    0xb9, 0xa7, 0x61, 0xba, 0xf8, 0x79, 0xd2, 0x66, 0x57, 0x28, 0xd7, 0x31,

    0xb5, 0x0b, 0x27, 0x19, 0x1e, 0x6f, 0x46, 0xfc, 0x54, 0x95, 0xeb, 0x78,

    0x01, 0xb6, 0xd9, 0x79, 0x5a, 0x4d, 0x02, 0x81, 0x81, 0x00, 0xd5, 0x8f,

    0x16, 0x53, 0x2f, 0x57, 0x93, 0xbf, 0x09, 0x75, 0xbf, 0x63, 0x40, 0x3d,

    0x27, 0xfd, 0x23, 0x21, 0xde, 0x9b, 0xe9, 0x73, 0x3f, 0x49, 0x02, 0xd2,

    0x38, 0x96, 0xcf, 0xc3, 0xba, 0x92, 0x07, 0x87, 0x52, 0xa9, 0x35, 0xe3,

    0x0c, 0xe4, 0x2f, 0x05, 0x7b, 0x37, 0xa5, 0x40, 0x9c, 0x3b, 0x94, 0xf7,

    0xad, 0xa0, 0xee, 0x3a, 0xa8, 0xfb, 0x1f, 0x11, 0x1f, 0xd8, 0x9a, 0x80,

    0x42, 0x3d, 0x7f, 0xa4, 0xb8, 0x9a, 0xaa, 0xea, 0x72, 0xc1, 0xe3, 0xed,

    0x06, 0x60, 0x92, 0x37, 0xf9, 0xba, 0xfb, 0x9e, 0xed, 0x05, 0xa6, 0xd4,

    0x72, 0x68, 0x4f, 0x63, 0xfe, 0xd6, 0x10, 0x0d, 0x4f, 0x0a, 0x93, 0xc6,

    0xb9, 0xd7, 0xaf, 0xfd, 0xd9, 0x57, 0x7d, 0xcb, 0x75, 0xe8, 0x93, 0x2b,

    0xae, 0x4f, 0xea, 0xd7, 0x30, 0x0b, 0x58, 0x44, 0x82, 0x0f, 0x84, 0x5d,

    0x62, 0x11, 0x78, 0xea, 0x5f, 0xc5, 0x02, 0x81, 0x81, 0x00, 0x82, 0x0c,

    0xc1, 0xe6, 0x0b, 0x72, 0xf1, 0x48, 0x5f, 0xac, 0xbd, 0x98, 0xe5, 0x7d,

    0x09, 0xbd, 0x15, 0x95, 0x47, 0x09, 0xa1, 0x6c, 0x03, 0x91, 0xbf, 0x05,

    0x70, 0xc1, 0x3e, 0x52, 0x64, 0x99, 0x0e, 0xa7, 0x98, 0x70, 0xfb, 0xf6,

    0xeb, 0x9e, 0x25, 0x9d, 0x8e, 0x88, 0x30, 0xf2, 0xf0, 0x22, 0x6c, 0xd0,

    0xcc, 0x51, 0x8f, 0x5c, 0x70, 0xc7, 0x37, 0xc4, 0x69, 0xab, 0x1d, 0xfc,

    0xed, 0x3a, 0x03, 0xbb, 0xa2, 0xad, 0xb6, 0xea, 0x89, 0x6b, 0x67, 0x4b,

    0x96, 0xaa, 0xd9, 0xcc, 0xc8, 0x4b, 0xfa, 0x18, 0x21, 0x08, 0xb2, 0xa3,

    0xb9, 0x3e, 0x61, 0x99, 0xdc, 0x5a, 0x97, 0x9c, 0x73, 0x6a, 0xb9, 0xf9,

    0x68, 0x03, 0x24, 0x5f, 0x55, 0x77, 0x9c, 0xb4, 0xbe, 0x7a, 0x78, 0x53,

    0x68, 0x48, 0x69, 0x53, 0xc8, 0xb1, 0xf5, 0xbf, 0x98, 0x2d, 0x11, 0x1e,

    0x98, 0xa8, 0x36, 0x50, 0xa0, 0xb1, 0x02, 0x81, 0x81, 0x00, 0x90, 0x88,

    0x30, 0x71, 0xc7, 0xfe, 0x9b, 0x6d, 0x95, 0x37, 0x6d, 0x79, 0xfc, 0x85,

    0xe7, 0x44, 0x78, 0xbc, 0x79, 0x6e, 0x47, 0x86, 0xc9, 0xf3, 0xdd, 0xc6,

    0xec, 0xa9, 0x94, 0x9f, 0x40, 0xeb, 0x87, 0xd0, 0xdb, 0xee, 0xcd, 0x1b,

    0x87, 0x23, 0xff, 0x76, 0xd4, 0x37, 0x8a, 0xcd, 0xb9, 0x6e, 0xd1, 0x98,

    0xf6, 0x97, 0x8d, 0xe3, 0x81, 0x6d, 0xc3, 0x4e, 0xd1, 0xa0, 0xc4, 0x9f,

    0xbd, 0x34, 0xe5, 0xe8, 0x53, 0x4f, 0xca, 0x10, 0xb5, 0xed, 0xe7, 0x16,

    0x09, 0x54, 0xde, 0x60, 0xa7, 0xd1, 0x16, 0x6e, 0x2e, 0xb7, 0xbe, 0x7a,

    0xd5, 0x9b, 0x26, 0xef, 0xe4, 0x0e, 0x77, 0xfa, 0xa9, 0xdd, 0xdc, 0xb9,

    0x88, 0x19, 0x23, 0x70, 0xc7, 0xe1, 0x60, 0xaf, 0x8c, 0x73, 0x04, 0xf7,

    0x71, 0x17, 0x81, 0x36, 0x75, 0xbb, 0x97, 0xd7, 0x75, 0xb6, 0x8e, 0xbc,

    0xac, 0x9c, 0x6a, 0x9b, 0x24, 0x89, 0x02, 0x81, 0x80, 0x5a, 0x2b, 0xc7,

    0x6b, 0x8c, 0x65, 0xdb, 0x04, 0x73, 0xab, 0x25, 0xe1, 0x5b, 0xbc, 0x3c,

    0xcf, 0x5a, 0x3c, 0x04, 0xae, 0x97, 0x2e, 0xfd, 0xa4, 0x97, 0x1f, 0x05,

    0x17, 0x27, 0xac, 0x7c, 0x30, 0x85, 0xb4, 0x82, 0x3f, 0x5b, 0xb7, 0x94,

    0x3b, 0x7f, 0x6c, 0x0c, 0xc7, 0x16, 0xc6, 0xa0, 0xbd, 0x80, 0xb0, 0x81,

    0xde, 0xa0, 0x23, 0xa6, 0xf6, 0x75, 0x33, 0x51, 0x35, 0xa2, 0x75, 0x55,

    0x70, 0x4d, 0x42, 0xbb, 0xcf, 0x54, 0xe4, 0xdb, 0x2d, 0x88, 0xa0, 0x7a,

    0xf2, 0x17, 0xa7, 0xdd, 0x13, 0x44, 0x9f, 0x5f, 0x6b, 0x2c, 0x42, 0x42,

    0x8b, 0x13, 0x4d, 0xf9, 0x5b, 0xf8, 0x33, 0x42, 0xd9, 0x9e, 0x50, 0x1c,

    0x7c, 0xbc, 0xfa, 0x62, 0x85, 0x0b, 0xcf, 0x99, 0xda, 0x9e, 0x04, 0x90,

    0xb2, 0xc6, 0xb2, 0x0a, 0x2a, 0x7c, 0x6d, 0x6a, 0x40, 0xfc, 0xf5, 0x50,

    0x98, 0x46, 0x89, 0x82, 0x40,

};

const uint8_t kALPNProtocols[] = {

    0x01, 'a', 0x02, 'a', 'a', 0x03, 'a', 'a', 'a',

};

const uint8_t kECHKey[] = {

    0x35, 0x6d, 0x45, 0x06, 0xb3, 0x88, 0x89, 0x2e, 0xd6, 0x87, 0x84,

    0xd2, 0x2d, 0x6f, 0x83, 0x48, 0xad, 0xf2, 0xfd, 0x08, 0x51, 0x73,

    0x10, 0xa0, 0xb8, 0xdd, 0xe9, 0x96, 0x6a, 0xde, 0xbc, 0x82,

};

int ALPNSelectCallback(SSL *ssl, const uint8_t **out, uint8_t *out_len,

                       const uint8_t *in, unsigned in_len, void *arg) {

  static const uint8_t kProtocol[] = {'a', 'a'};

  *out = kProtocol;

  *out_len = sizeof(kProtocol);

  return SSL_TLSEXT_ERR_OK;

}

int NPNSelectCallback(SSL *ssl, uint8_t **out, uint8_t *out_len,

                      const uint8_t *in, unsigned in_len, void *arg) {

  static const uint8_t kProtocol[] = {'a', 'a'};

  *out = const_cast<uint8_t *>(kProtocol);

  *out_len = sizeof(kProtocol);

  return SSL_TLSEXT_ERR_OK;

}

int NPNAdvertiseCallback(SSL *ssl, const uint8_t **out, unsigned *out_len,

                         void *arg) {

  static const uint8_t kProtocols[] = {

      0x01, 'a', 0x02, 'a', 'a', 0x03, 'a', 'a', 'a',

  };

  *out = kProtocols;

  *out_len = sizeof(kProtocols);

  return SSL_TLSEXT_ERR_OK;

}

class TLSFuzzer {

 public:

  enum Protocol {

    kTLS,

    kDTLS,

  };

  enum Role {

    kClient,

    kServer,

  };

  TLSFuzzer(Protocol protocol, Role role)

      : debug_(getenv("BORINGSSL_FUZZER_DEBUG") != nullptr),

        protocol_(protocol),

        role_(role) {

    if (!Init()) {

      abort();

    }

  }

  static void MoveBIOs(SSL *dest, SSL *src) {

    BIO *rbio = SSL_get_rbio(src);

    BIO_up_ref(rbio);

    SSL_set0_rbio(dest, rbio);

    BIO *wbio = SSL_get_wbio(src);

    BIO_up_ref(wbio);

    SSL_set0_wbio(dest, wbio);

    SSL_set0_rbio(src, nullptr);

    SSL_set0_wbio(src, nullptr);

  }

  int TestOneInput(const uint8_t *buf, size_t len) {

    RAND_reset_for_fuzzing();

    CBS cbs;

    CBS_init(&cbs, buf, len);

    bssl::UniquePtr<SSL> ssl = SetupTest(&cbs);

    if (!ssl) {

      if (debug_) {

        fprintf(stderr, "Error parsing parameters.\n");

      }

      return 0;

    }

    if (role_ == kClient) {

      SSL_set_renegotiate_mode(ssl.get(), ssl_renegotiate_freely);

      SSL_set_tlsext_host_name(ssl.get(), "hostname");

    }

    // ssl_handoff may or may not be used.

    bssl::UniquePtr<SSL> ssl_handoff(SSL_new(ctx_.get()));

    bssl::UniquePtr<SSL> ssl_handback(SSL_new(ctx_.get()));

    SSL_set_accept_state(ssl_handoff.get());

    SSL_set0_rbio(ssl.get(), MakeBIO(CBS_data(&cbs), CBS_len(&cbs)).release());

    SSL_set0_wbio(ssl.get(), BIO_new(BIO_s_mem()));

    SSL *ssl_handshake = ssl.get();

    bool handshake_successful = false;

    bool handback_successful = false;

    for (;;) {

      int ret = SSL_do_handshake(ssl_handshake);

      if (ret < 0 && SSL_get_error(ssl_handshake, ret) == SSL_ERROR_HANDOFF) {

        MoveBIOs(ssl_handoff.get(), ssl.get());

        // Ordinarily we would call SSL_serialize_handoff(ssl.get().  But for

        // fuzzing, use the serialized handoff that's getting fuzzed.

        if (!bssl::SSL_apply_handoff(ssl_handoff.get(), handoff_)) {

          if (debug_) {

            fprintf(stderr, "Handoff failed.\n");

          }

          break;

        }

        ssl_handshake = ssl_handoff.get();

      } else if (ret < 0 &&

                 SSL_get_error(ssl_handshake, ret) == SSL_ERROR_HANDBACK) {

        MoveBIOs(ssl_handback.get(), ssl_handoff.get());

        if (!bssl::SSL_apply_handback(ssl_handback.get(), handback_)) {

          if (debug_) {

            fprintf(stderr, "Handback failed.\n");

          }

          break;

        }

        handback_successful = true;

        ssl_handshake = ssl_handback.get();

      } else {

        handshake_successful = ret == 1;

        break;

      }

    }

    if (debug_) {

      if (!handshake_successful) {

        fprintf(stderr, "Handshake failed.\n");

      } else if (handback_successful) {

        fprintf(stderr, "Handback successful.\n");

      }

    }

    if (handshake_successful) {

      // Keep reading application data until error or EOF.

      uint8_t tmp[1024];

      for (;;) {

        if (SSL_read(ssl_handshake, tmp, sizeof(tmp)) <= 0) {

          break;

        }

      }

    }

    if (debug_) {

      ERR_print_errors_fp(stderr);

    }

    ERR_clear_error();

    return 0;

  }

 private:

  // Init initializes |ctx_| with settings common to all inputs.

  bool Init() {

    ctx_.reset(SSL_CTX_new(protocol_ == kDTLS ? DTLS_method() : TLS_method()));

    bssl::UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());

    bssl::UniquePtr<RSA> privkey(RSA_private_key_from_bytes(

        kRSAPrivateKeyDER, sizeof(kRSAPrivateKeyDER)));

    if (!ctx_ || !privkey || !pkey ||

        !EVP_PKEY_set1_RSA(pkey.get(), privkey.get()) ||

        !SSL_CTX_use_PrivateKey(ctx_.get(), pkey.get())) {

      return false;

    }

    const uint8_t *bufp = kCertificateDER;

    bssl::UniquePtr<X509> cert(d2i_X509(NULL, &bufp, sizeof(kCertificateDER)));

    if (!cert ||

        !SSL_CTX_use_certificate(ctx_.get(), cert.get()) ||

        !SSL_CTX_set_ocsp_response(ctx_.get(), kOCSPResponse,

                                   sizeof(kOCSPResponse)) ||

        !SSL_CTX_set_signed_cert_timestamp_list(ctx_.get(), kSCT,

                                                sizeof(kSCT))) {

      return false;

    }

    // When accepting peer certificates, allow any certificate.

    SSL_CTX_set_cert_verify_callback(

        ctx_.get(),

        [](X509_STORE_CTX *store_ctx, void *arg) -> int { return 1; }, nullptr);

    SSL_CTX_enable_signed_cert_timestamps(ctx_.get());

    SSL_CTX_enable_ocsp_stapling(ctx_.get());

    // Enable versions and ciphers that are off by default.

    if (!SSL_CTX_set_strict_cipher_list(ctx_.get(), "ALL:3DES")) {

      return false;

    }

    static const uint16_t kGroups[] = {

        SSL_GROUP_X25519_KYBER768_DRAFT00, SSL_GROUP_X25519,

        SSL_GROUP_SECP256R1, SSL_GROUP_SECP384R1, SSL_GROUP_SECP521R1};

    if (!SSL_CTX_set1_group_ids(ctx_.get(), kGroups,

                                OPENSSL_ARRAY_SIZE(kGroups))) {

      return false;

    }

    SSL_CTX_set_early_data_enabled(ctx_.get(), 1);

    SSL_CTX_set_next_proto_select_cb(ctx_.get(), NPNSelectCallback, nullptr);

    SSL_CTX_set_next_protos_advertised_cb(ctx_.get(), NPNAdvertiseCallback,

                                          nullptr);

    SSL_CTX_set_alpn_select_cb(ctx_.get(), ALPNSelectCallback, nullptr);

    if (SSL_CTX_set_alpn_protos(ctx_.get(), kALPNProtocols,

                                sizeof(kALPNProtocols)) != 0) {

      return false;

    }

    CBS cbs;

    CBS_init(&cbs, kP256KeyPKCS8, sizeof(kP256KeyPKCS8));

    pkey.reset(EVP_parse_private_key(&cbs));

    if (!pkey || !SSL_CTX_set1_tls_channel_id(ctx_.get(), pkey.get())) {

      return false;

    }

    SSL_CTX_set_tls_channel_id_enabled(ctx_.get(), 1);

    if (role_ == kServer) {

      bssl::UniquePtr<SSL_ECH_KEYS> keys(SSL_ECH_KEYS_new());

      bssl::ScopedEVP_HPKE_KEY key;

      uint8_t *ech_config;

      size_t ech_config_len;

      if (!keys ||

          !EVP_HPKE_KEY_init(key.get(), EVP_hpke_x25519_hkdf_sha256(), kECHKey,

                             sizeof(kECHKey)) ||

          // Match |echConfig| in |addEncryptedClientHelloTests| from runner.go.

          !SSL_marshal_ech_config(&ech_config, &ech_config_len,

                                  /*config_id=*/42, key.get(), "public.example",

                                  /*max_name_len=*/64)) {

        return false;

      }

      bssl::UniquePtr<uint8_t> free_ech_config(ech_config);

      if (!SSL_ECH_KEYS_add(keys.get(), /*is_retry_config=*/true, ech_config,

                            ech_config_len, key.get()) ||

          !SSL_CTX_set1_ech_keys(ctx_.get(), keys.get())) {

        return false;

      }

    }

    return true;

  }

  // SetupTest parses parameters from |cbs| and returns a newly-configured |SSL|

  // object or nullptr on error. On success, the caller should feed the

  // remaining input in |cbs| to the SSL stack.

  bssl::UniquePtr<SSL> SetupTest(CBS *cbs) {

    // |ctx| is shared between runs, so we must clear any modifications to it

    // made later on in this function.

    SSL_CTX_flush_sessions(ctx_.get(), 0);

    handoff_ = {};

    handback_ = {};

    bssl::UniquePtr<SSL> ssl(SSL_new(ctx_.get()));

    if (role_ == kServer) {

      SSL_set_accept_state(ssl.get());

    } else {

      SSL_set_connect_state(ssl.get());

    }

    for (;;) {

      uint16_t tag;

      if (!CBS_get_u16(cbs, &tag)) {

        return nullptr;

      }

      switch (tag) {

        case kDataTag:

          return ssl;

        case kSessionTag: {

          CBS data;

          if (!CBS_get_u24_length_prefixed(cbs, &data)) {

            return nullptr;

          }

          bssl::UniquePtr<SSL_SESSION> session(SSL_SESSION_from_bytes(

              CBS_data(&data), CBS_len(&data), ctx_.get()));

          if (!session) {

            return nullptr;

          }

          if (role_ == kServer) {

            SSL_CTX_add_session(ctx_.get(), session.get());

          } else {

            SSL_set_session(ssl.get(), session.get());

          }

          break;

        }

        case kRequestClientCert:

          if (role_ == kClient) {

            return nullptr;

          }

          SSL_set_verify(ssl.get(), SSL_VERIFY_PEER, nullptr);

          break;

        case kHandoffTag: {

          CBS handoff;

          if (!CBS_get_u24_length_prefixed(cbs, &handoff)) {

            return nullptr;

          }

          handoff_.assign(CBS_data(&handoff),

                          CBS_data(&handoff) + CBS_len(&handoff));

          bssl::SSL_set_handoff_mode(ssl.get(), 1);

          break;

        }

        case kHandbackTag: {

          CBS handback;

          if (!CBS_get_u24_length_prefixed(cbs, &handback)) {

            return nullptr;

          }

          handback_.assign(CBS_data(&handback),

                           CBS_data(&handback) + CBS_len(&handback));

          bssl::SSL_set_handoff_mode(ssl.get(), 1);

          break;

        }

        case kHintsTag: {

          CBS hints;

          if (!CBS_get_u24_length_prefixed(cbs, &hints)) {

            return nullptr;

          }

          SSL_set_handshake_hints(ssl.get(), CBS_data(&hints), CBS_len(&hints));

          break;

        }

        default:

          return nullptr;

      }

    }

  }

  struct BIOData {

    Protocol protocol;

    CBS cbs;

  };

  bssl::UniquePtr<BIO> MakeBIO(const uint8_t *in, size_t len) {

    BIOData *b = new BIOData;

    b->protocol = protocol_;

    CBS_init(&b->cbs, in, len);

    bssl::UniquePtr<BIO> bio(BIO_new(&kBIOMethod));

    bio->init = 1;

    bio->ptr = b;

    return bio;

  }

  static int BIORead(BIO *bio, char *out, int len) {

    assert(bio->method == &kBIOMethod);

    BIOData *b = reinterpret_cast<BIOData *>(bio->ptr);

    if (b->protocol == kTLS) {

      len = std::min(static_cast<size_t>(len), CBS_len(&b->cbs));

      memcpy(out, CBS_data(&b->cbs), len);

      CBS_skip(&b->cbs, len);

      return len;

    }

    // Preserve packet boundaries for DTLS.

    CBS packet;

    if (!CBS_get_u24_length_prefixed(&b->cbs, &packet)) {

      return -1;

    }

    len = std::min(static_cast<size_t>(len), CBS_len(&packet));

    memcpy(out, CBS_data(&packet), len);

    return len;

  }

  static int BIODestroy(BIO *bio) {

    assert(bio->method == &kBIOMethod);

    BIOData *b = reinterpret_cast<BIOData *>(bio->ptr);

    delete b;

    return 1;

  }

  static const BIO_METHOD kBIOMethod;

  bool debug_;

  Protocol protocol_;

  Role role_;

  bssl::UniquePtr<SSL_CTX> ctx_;

  std::vector<uint8_t> handoff_, handback_;

};

const BIO_METHOD TLSFuzzer::kBIOMethod = {

    0,        // type

    nullptr,  // name

    nullptr,  // bwrite

    TLSFuzzer::BIORead,

    nullptr,  // bputs

    nullptr,  // bgets

    nullptr,  // ctrl

    nullptr,  // create

    TLSFuzzer::BIODestroy,

    nullptr,  // callback_ctrl

};

}  // namespace

#endif  // HEADER_SSL_TEST_FUZZER