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Diffstat (limited to 'src/tool/speed.cc')
-rw-r--r-- | src/tool/speed.cc | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/src/tool/speed.cc b/src/tool/speed.cc new file mode 100644 index 0000000..2df6f90 --- /dev/null +++ b/src/tool/speed.cc @@ -0,0 +1,329 @@ +/* Copyright (c) 2014, 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. */ + +#include <string> +#include <functional> +#include <memory> +#include <vector> + +#include <stdint.h> +#include <string.h> +#include <time.h> + +#include <openssl/aead.h> +#include <openssl/bio.h> +#include <openssl/digest.h> +#include <openssl/obj.h> +#include <openssl/rsa.h> + +#if defined(OPENSSL_WINDOWS) +#pragma warning(push, 3) +#include <Windows.h> +#pragma warning(pop) +#elif defined(OPENSSL_APPLE) +#include <sys/time.h> +#endif + + +extern "C" { +// These values are DER encoded, RSA private keys. +extern const uint8_t kDERRSAPrivate2048[]; +extern size_t kDERRSAPrivate2048Len; +extern const uint8_t kDERRSAPrivate4096[]; +extern size_t kDERRSAPrivate4096Len; +} + +// TimeResults represents the results of benchmarking a function. +struct TimeResults { + // num_calls is the number of function calls done in the time period. + unsigned num_calls; + // us is the number of microseconds that elapsed in the time period. + unsigned us; + + void Print(const std::string &description) { + printf("Did %u %s operations in %uus (%.1f ops/sec)\n", num_calls, + description.c_str(), us, + (static_cast<double>(num_calls) / us) * 1000000); + } + + void PrintWithBytes(const std::string &description, size_t bytes_per_call) { + printf("Did %u %s operations in %uus (%.1f ops/sec): %.1f MB/s\n", + num_calls, description.c_str(), us, + (static_cast<double>(num_calls) / us) * 1000000, + static_cast<double>(bytes_per_call * num_calls) / us); + } +}; + +#if defined(OPENSSL_WINDOWS) +static uint64_t time_now() { return GetTickCount64() * 1000; } +#elif defined(OPENSSL_APPLE) +static uint64_t time_now() { + struct timeval tv; + uint64_t ret; + + gettimeofday(&tv, NULL); + ret = tv.tv_sec; + ret *= 1000000; + ret += tv.tv_usec; + return ret; +} +#else +static uint64_t time_now() { + struct timespec ts; + clock_gettime(CLOCK_MONOTONIC, &ts); + + uint64_t ret = ts.tv_sec; + ret *= 1000000; + ret += ts.tv_nsec / 1000; + return ret; +} +#endif + +static bool TimeFunction(TimeResults *results, std::function<bool()> func) { + // kTotalMS is the total amount of time that we'll aim to measure a function + // for. + static const uint64_t kTotalUS = 3000000; + uint64_t start = time_now(), now, delta; + unsigned done = 0, iterations_between_time_checks; + + if (!func()) { + return false; + } + now = time_now(); + delta = now - start; + if (delta == 0) { + iterations_between_time_checks = 250; + } else { + // Aim for about 100ms between time checks. + iterations_between_time_checks = + static_cast<double>(100000) / static_cast<double>(delta); + if (iterations_between_time_checks > 1000) { + iterations_between_time_checks = 1000; + } else if (iterations_between_time_checks < 1) { + iterations_between_time_checks = 1; + } + } + + for (;;) { + for (unsigned i = 0; i < iterations_between_time_checks; i++) { + if (!func()) { + return false; + } + done++; + } + + now = time_now(); + if (now - start > kTotalUS) { + break; + } + } + + results->us = now - start; + results->num_calls = done; + return true; +} + +static bool SpeedRSA(const std::string& key_name, RSA *key) { + TimeResults results; + + std::unique_ptr<uint8_t[]> sig(new uint8_t[RSA_size(key)]); + const uint8_t fake_sha256_hash[32] = {0}; + unsigned sig_len; + + if (!TimeFunction(&results, + [key, &sig, &fake_sha256_hash, &sig_len]() -> bool { + return RSA_sign(NID_sha256, fake_sha256_hash, sizeof(fake_sha256_hash), + sig.get(), &sig_len, key); + })) { + fprintf(stderr, "RSA_sign failed.\n"); + BIO_print_errors_fp(stderr); + return false; + } + results.Print(key_name + " signing"); + + if (!TimeFunction(&results, + [key, &fake_sha256_hash, &sig, sig_len]() -> bool { + return RSA_verify(NID_sha256, fake_sha256_hash, + sizeof(fake_sha256_hash), sig.get(), sig_len, key); + })) { + fprintf(stderr, "RSA_verify failed.\n"); + BIO_print_errors_fp(stderr); + return false; + } + results.Print(key_name + " verify"); + + return true; +} + +template<typename T> +struct free_functor { + void operator()(T* ptr) { + free(ptr); + } +}; + +static uint8_t *align(uint8_t *in, unsigned alignment) { + return reinterpret_cast<uint8_t *>( + (reinterpret_cast<uintptr_t>(in) + alignment) & ~(alignment - 1)); +} + +static bool SpeedAEADChunk(const EVP_AEAD *aead, const std::string &name, + size_t chunk_len, size_t ad_len) { + static const unsigned kAlignment = 16; + + EVP_AEAD_CTX ctx; + const size_t key_len = EVP_AEAD_key_length(aead); + const size_t nonce_len = EVP_AEAD_nonce_length(aead); + const size_t overhead_len = EVP_AEAD_max_overhead(aead); + + std::unique_ptr<uint8_t[]> key(new uint8_t[key_len]); + memset(key.get(), 0, key_len); + std::unique_ptr<uint8_t[]> nonce(new uint8_t[nonce_len]); + memset(nonce.get(), 0, nonce_len); + std::unique_ptr<uint8_t, free_functor<uint8_t>> in_storage( + new uint8_t[chunk_len + kAlignment]); + std::unique_ptr<uint8_t, free_functor<uint8_t>> out_storage( + new uint8_t[chunk_len + overhead_len + kAlignment]); + std::unique_ptr<uint8_t[]> ad(new uint8_t[ad_len]); + memset(ad.get(), 0, ad_len); + + uint8_t *const in = align(in_storage.get(), kAlignment); + memset(in, 0, chunk_len); + uint8_t *const out = align(out_storage.get(), kAlignment); + memset(out, 0, chunk_len + overhead_len); + + if (!EVP_AEAD_CTX_init(&ctx, aead, key.get(), key_len, + EVP_AEAD_DEFAULT_TAG_LENGTH, NULL)) { + fprintf(stderr, "Failed to create EVP_AEAD_CTX.\n"); + BIO_print_errors_fp(stderr); + return false; + } + + TimeResults results; + if (!TimeFunction(&results, [chunk_len, overhead_len, nonce_len, ad_len, in, + out, &ctx, &nonce, &ad]() -> bool { + size_t out_len; + + return EVP_AEAD_CTX_seal( + &ctx, out, &out_len, chunk_len + overhead_len, nonce.get(), + nonce_len, in, chunk_len, ad.get(), ad_len); + })) { + fprintf(stderr, "EVP_AEAD_CTX_seal failed.\n"); + BIO_print_errors_fp(stderr); + return false; + } + + results.PrintWithBytes(name + " seal", chunk_len); + + EVP_AEAD_CTX_cleanup(&ctx); + + return true; +} + +static bool SpeedAEAD(const EVP_AEAD *aead, const std::string &name, + size_t ad_len) { + return SpeedAEADChunk(aead, name + " (16 bytes)", 16, ad_len) && + SpeedAEADChunk(aead, name + " (1350 bytes)", 1350, ad_len) && + SpeedAEADChunk(aead, name + " (8192 bytes)", 8192, ad_len); +} + +static bool SpeedHashChunk(const EVP_MD *md, const std::string &name, + size_t chunk_len) { + EVP_MD_CTX *ctx = EVP_MD_CTX_create(); + uint8_t scratch[8192]; + + if (chunk_len > sizeof(scratch)) { + return false; + } + + TimeResults results; + if (!TimeFunction(&results, [ctx, md, chunk_len, &scratch]() -> bool { + uint8_t digest[EVP_MAX_MD_SIZE]; + unsigned int md_len; + + return EVP_DigestInit_ex(ctx, md, NULL /* ENGINE */) && + EVP_DigestUpdate(ctx, scratch, chunk_len) && + EVP_DigestFinal_ex(ctx, digest, &md_len); + })) { + fprintf(stderr, "EVP_DigestInit_ex failed.\n"); + BIO_print_errors_fp(stderr); + return false; + } + + results.PrintWithBytes(name, chunk_len); + + EVP_MD_CTX_destroy(ctx); + + return true; +} +static bool SpeedHash(const EVP_MD *md, const std::string &name) { + return SpeedHashChunk(md, name + " (16 bytes)", 16) && + SpeedHashChunk(md, name + " (256 bytes)", 256) && + SpeedHashChunk(md, name + " (8192 bytes)", 8192); +} + +bool Speed(const std::vector<std::string> &args) { + const uint8_t *inp; + + RSA *key = NULL; + inp = kDERRSAPrivate2048; + if (NULL == d2i_RSAPrivateKey(&key, &inp, kDERRSAPrivate2048Len)) { + fprintf(stderr, "Failed to parse RSA key.\n"); + BIO_print_errors_fp(stderr); + return false; + } + + if (!SpeedRSA("RSA 2048", key)) { + return false; + } + + RSA_free(key); + key = NULL; + + inp = kDERRSAPrivate4096; + if (NULL == d2i_RSAPrivateKey(&key, &inp, kDERRSAPrivate4096Len)) { + fprintf(stderr, "Failed to parse 4096-bit RSA key.\n"); + BIO_print_errors_fp(stderr); + return 1; + } + + if (!SpeedRSA("RSA 4096", key)) { + return false; + } + + RSA_free(key); + + // kTLSADLen is the number of bytes of additional data that TLS passes to + // AEADs. + static const size_t kTLSADLen = 13; + // kLegacyADLen is the number of bytes that TLS passes to the "legacy" AEADs. + // These are AEADs that weren't originally defined as AEADs, but which we use + // via the AEAD interface. In order for that to work, they have some TLS + // knowledge in them and construct a couple of the AD bytes internally. + static const size_t kLegacyADLen = kTLSADLen - 2; + + if (!SpeedAEAD(EVP_aead_aes_128_gcm(), "AES-128-GCM", kTLSADLen) || + !SpeedAEAD(EVP_aead_aes_256_gcm(), "AES-256-GCM", kTLSADLen) || + !SpeedAEAD(EVP_aead_chacha20_poly1305(), "ChaCha20-Poly1305", kTLSADLen) || + !SpeedAEAD(EVP_aead_rc4_md5_tls(), "RC4-MD5", kLegacyADLen) || + !SpeedAEAD(EVP_aead_aes_128_cbc_sha1_tls(), "AES-128-CBC-SHA1", kLegacyADLen) || + !SpeedAEAD(EVP_aead_aes_256_cbc_sha1_tls(), "AES-256-CBC-SHA1", kLegacyADLen) || + !SpeedHash(EVP_sha1(), "SHA-1") || + !SpeedHash(EVP_sha256(), "SHA-256") || + !SpeedHash(EVP_sha512(), "SHA-512")) { + return false; + } + + return 0; +} |