315 lines
12 KiB
C++
315 lines
12 KiB
C++
/* Copyright (c) 2014, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <memory>
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#include <vector>
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#include <gtest/gtest.h>
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#include <openssl/asn1.h>
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#include <openssl/bytestring.h>
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#include <openssl/crypto.h>
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#include <openssl/digest.h>
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#include <openssl/err.h>
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#include <openssl/md4.h>
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#include <openssl/md5.h>
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#include <openssl/nid.h>
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#include <openssl/obj.h>
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#include <openssl/sha.h>
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#include "../internal.h"
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#include "../test/test_util.h"
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struct MD {
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// name is the name of the digest.
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const char* name;
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// md_func is the digest to test.
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const EVP_MD *(*func)(void);
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// one_shot_func is the convenience one-shot version of the
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// digest.
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uint8_t *(*one_shot_func)(const uint8_t *, size_t, uint8_t *);
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};
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static const MD md4 = { "MD4", &EVP_md4, nullptr };
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static const MD md5 = { "MD5", &EVP_md5, &MD5 };
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static const MD sha1 = { "SHA1", &EVP_sha1, &SHA1 };
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static const MD sha224 = { "SHA224", &EVP_sha224, &SHA224 };
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static const MD sha256 = { "SHA256", &EVP_sha256, &SHA256 };
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static const MD sha384 = { "SHA384", &EVP_sha384, &SHA384 };
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static const MD sha512 = { "SHA512", &EVP_sha512, &SHA512 };
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static const MD md5_sha1 = { "MD5-SHA1", &EVP_md5_sha1, nullptr };
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struct DigestTestVector {
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// md is the digest to test.
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const MD &md;
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// input is a NUL-terminated string to hash.
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const char *input;
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// repeat is the number of times to repeat input.
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size_t repeat;
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// expected_hex is the expected digest in hexadecimal.
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const char *expected_hex;
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};
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static const DigestTestVector kTestVectors[] = {
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// MD4 tests, from RFC 1320. (crypto/md4 does not provide a
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// one-shot MD4 function.)
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{ md4, "", 1, "31d6cfe0d16ae931b73c59d7e0c089c0" },
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{ md4, "a", 1, "bde52cb31de33e46245e05fbdbd6fb24" },
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{ md4, "abc", 1, "a448017aaf21d8525fc10ae87aa6729d" },
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{ md4, "message digest", 1, "d9130a8164549fe818874806e1c7014b" },
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{ md4, "abcdefghijklmnopqrstuvwxyz", 1,
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"d79e1c308aa5bbcdeea8ed63df412da9" },
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{ md4,
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", 1,
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"043f8582f241db351ce627e153e7f0e4" },
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{ md4, "1234567890", 8, "e33b4ddc9c38f2199c3e7b164fcc0536" },
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// MD5 tests, from RFC 1321.
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{ md5, "", 1, "d41d8cd98f00b204e9800998ecf8427e" },
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{ md5, "a", 1, "0cc175b9c0f1b6a831c399e269772661" },
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{ md5, "abc", 1, "900150983cd24fb0d6963f7d28e17f72" },
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{ md5, "message digest", 1, "f96b697d7cb7938d525a2f31aaf161d0" },
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{ md5, "abcdefghijklmnopqrstuvwxyz", 1,
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"c3fcd3d76192e4007dfb496cca67e13b" },
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{ md5,
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", 1,
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"d174ab98d277d9f5a5611c2c9f419d9f" },
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{ md5, "1234567890", 8, "57edf4a22be3c955ac49da2e2107b67a" },
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// SHA-1 tests, from RFC 3174.
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{ sha1, "abc", 1, "a9993e364706816aba3e25717850c26c9cd0d89d" },
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{ sha1,
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 1,
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"84983e441c3bd26ebaae4aa1f95129e5e54670f1" },
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{ sha1, "a", 1000000, "34aa973cd4c4daa4f61eeb2bdbad27316534016f" },
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{ sha1,
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"0123456701234567012345670123456701234567012345670123456701234567", 10,
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"dea356a2cddd90c7a7ecedc5ebb563934f460452" },
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// SHA-224 tests, from RFC 3874.
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{ sha224, "abc", 1,
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"23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7" },
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{ sha224,
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 1,
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"75388b16512776cc5dba5da1fd890150b0c6455cb4f58b1952522525" },
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{ sha224,
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"a", 1000000,
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"20794655980c91d8bbb4c1ea97618a4bf03f42581948b2ee4ee7ad67" },
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// SHA-256 tests, from NIST.
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{ sha256, "abc", 1,
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"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad" },
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{ sha256,
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 1,
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"248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1" },
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// SHA-384 tests, from NIST.
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{ sha384, "abc", 1,
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"cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed"
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"8086072ba1e7cc2358baeca134c825a7" },
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{ sha384,
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"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
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"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", 1,
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"09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712"
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"fcc7c71a557e2db966c3e9fa91746039" },
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// SHA-512 tests, from NIST.
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{ sha512, "abc", 1,
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"ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"
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"2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f" },
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{ sha512,
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"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
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"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", 1,
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"8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018"
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"501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909" },
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// MD5-SHA1 tests.
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{ md5_sha1, "abc", 1,
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"900150983cd24fb0d6963f7d28e17f72a9993e364706816aba3e25717850c26c9cd0d89d" },
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};
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static void CompareDigest(const DigestTestVector *test,
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const uint8_t *digest,
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size_t digest_len) {
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static const char kHexTable[] = "0123456789abcdef";
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char digest_hex[2*EVP_MAX_MD_SIZE + 1];
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for (size_t i = 0; i < digest_len; i++) {
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digest_hex[2*i] = kHexTable[digest[i] >> 4];
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digest_hex[2*i + 1] = kHexTable[digest[i] & 0xf];
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}
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digest_hex[2*digest_len] = '\0';
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EXPECT_STREQ(test->expected_hex, digest_hex);
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}
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static void TestDigest(const DigestTestVector *test) {
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bssl::ScopedEVP_MD_CTX ctx;
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// Test the input provided.
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ASSERT_TRUE(EVP_DigestInit_ex(ctx.get(), test->md.func(), NULL));
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for (size_t i = 0; i < test->repeat; i++) {
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ASSERT_TRUE(EVP_DigestUpdate(ctx.get(), test->input, strlen(test->input)));
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}
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std::unique_ptr<uint8_t[]> digest(new uint8_t[EVP_MD_size(test->md.func())]);
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unsigned digest_len;
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ASSERT_TRUE(EVP_DigestFinal_ex(ctx.get(), digest.get(), &digest_len));
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CompareDigest(test, digest.get(), digest_len);
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// Test the input one character at a time.
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ASSERT_TRUE(EVP_DigestInit_ex(ctx.get(), test->md.func(), NULL));
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ASSERT_TRUE(EVP_DigestUpdate(ctx.get(), NULL, 0));
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for (size_t i = 0; i < test->repeat; i++) {
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for (const char *p = test->input; *p; p++) {
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ASSERT_TRUE(EVP_DigestUpdate(ctx.get(), p, 1));
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}
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}
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ASSERT_TRUE(EVP_DigestFinal_ex(ctx.get(), digest.get(), &digest_len));
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EXPECT_EQ(EVP_MD_size(test->md.func()), digest_len);
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CompareDigest(test, digest.get(), digest_len);
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// Test with unaligned input.
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ASSERT_TRUE(EVP_DigestInit_ex(ctx.get(), test->md.func(), NULL));
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std::vector<char> unaligned(strlen(test->input) + 1);
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char *ptr = unaligned.data();
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if ((reinterpret_cast<uintptr_t>(ptr) & 1) == 0) {
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ptr++;
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}
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OPENSSL_memcpy(ptr, test->input, strlen(test->input));
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for (size_t i = 0; i < test->repeat; i++) {
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ASSERT_TRUE(EVP_DigestUpdate(ctx.get(), ptr, strlen(test->input)));
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}
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ASSERT_TRUE(EVP_DigestFinal_ex(ctx.get(), digest.get(), &digest_len));
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CompareDigest(test, digest.get(), digest_len);
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// Make a copy of the digest in the initial state.
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ASSERT_TRUE(EVP_DigestInit_ex(ctx.get(), test->md.func(), NULL));
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bssl::ScopedEVP_MD_CTX copy;
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ASSERT_TRUE(EVP_MD_CTX_copy_ex(copy.get(), ctx.get()));
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for (size_t i = 0; i < test->repeat; i++) {
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ASSERT_TRUE(EVP_DigestUpdate(copy.get(), test->input, strlen(test->input)));
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}
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ASSERT_TRUE(EVP_DigestFinal_ex(copy.get(), digest.get(), &digest_len));
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CompareDigest(test, digest.get(), digest_len);
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// Make a copy of the digest with half the input provided.
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size_t half = strlen(test->input) / 2;
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ASSERT_TRUE(EVP_DigestUpdate(ctx.get(), test->input, half));
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ASSERT_TRUE(EVP_MD_CTX_copy_ex(copy.get(), ctx.get()));
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ASSERT_TRUE(EVP_DigestUpdate(copy.get(), test->input + half,
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strlen(test->input) - half));
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for (size_t i = 1; i < test->repeat; i++) {
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ASSERT_TRUE(EVP_DigestUpdate(copy.get(), test->input, strlen(test->input)));
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}
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ASSERT_TRUE(EVP_DigestFinal_ex(copy.get(), digest.get(), &digest_len));
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CompareDigest(test, digest.get(), digest_len);
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// Test the one-shot function.
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if (test->md.one_shot_func && test->repeat == 1) {
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uint8_t *out = test->md.one_shot_func((const uint8_t *)test->input,
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strlen(test->input), digest.get());
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// One-shot functions return their supplied buffers.
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EXPECT_EQ(digest.get(), out);
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CompareDigest(test, digest.get(), EVP_MD_size(test->md.func()));
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}
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}
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TEST(DigestTest, TestVectors) {
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for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kTestVectors); i++) {
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SCOPED_TRACE(i);
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TestDigest(&kTestVectors[i]);
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}
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}
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TEST(DigestTest, Getters) {
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EXPECT_EQ(EVP_sha512(), EVP_get_digestbyname("RSA-SHA512"));
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EXPECT_EQ(EVP_sha512(), EVP_get_digestbyname("sha512WithRSAEncryption"));
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EXPECT_EQ(nullptr, EVP_get_digestbyname("nonsense"));
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EXPECT_EQ(EVP_sha512(), EVP_get_digestbyname("SHA512"));
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EXPECT_EQ(EVP_sha512(), EVP_get_digestbyname("sha512"));
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EXPECT_EQ(EVP_sha512(), EVP_get_digestbynid(NID_sha512));
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EXPECT_EQ(nullptr, EVP_get_digestbynid(NID_sha512WithRSAEncryption));
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EXPECT_EQ(nullptr, EVP_get_digestbynid(NID_undef));
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bssl::UniquePtr<ASN1_OBJECT> obj(OBJ_txt2obj("1.3.14.3.2.26", 0));
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ASSERT_TRUE(obj);
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EXPECT_EQ(EVP_sha1(), EVP_get_digestbyobj(obj.get()));
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EXPECT_EQ(EVP_md5_sha1(), EVP_get_digestbyobj(OBJ_nid2obj(NID_md5_sha1)));
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EXPECT_EQ(EVP_sha1(), EVP_get_digestbyobj(OBJ_nid2obj(NID_sha1)));
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}
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TEST(DigestTest, ASN1) {
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bssl::ScopedCBB cbb;
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ASSERT_TRUE(CBB_init(cbb.get(), 0));
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EXPECT_FALSE(EVP_marshal_digest_algorithm(cbb.get(), EVP_md5_sha1()));
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static const uint8_t kSHA256[] = {0x30, 0x0d, 0x06, 0x09, 0x60,
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0x86, 0x48, 0x01, 0x65, 0x03,
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0x04, 0x02, 0x01, 0x05, 0x00};
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static const uint8_t kSHA256NoParam[] = {0x30, 0x0b, 0x06, 0x09, 0x60,
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0x86, 0x48, 0x01, 0x65, 0x03,
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0x04, 0x02, 0x01};
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static const uint8_t kSHA256GarbageParam[] = {
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0x30, 0x0e, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01,
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0x65, 0x03, 0x04, 0x02, 0x01, 0x02, 0x01, 0x2a};
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// Serialize SHA-256.
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cbb.Reset();
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ASSERT_TRUE(CBB_init(cbb.get(), 0));
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ASSERT_TRUE(EVP_marshal_digest_algorithm(cbb.get(), EVP_sha256()));
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uint8_t *der;
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size_t der_len;
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ASSERT_TRUE(CBB_finish(cbb.get(), &der, &der_len));
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bssl::UniquePtr<uint8_t> free_der(der);
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EXPECT_EQ(Bytes(kSHA256), Bytes(der, der_len));
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// Parse SHA-256.
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CBS cbs;
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CBS_init(&cbs, kSHA256, sizeof(kSHA256));
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EXPECT_EQ(EVP_sha256(), EVP_parse_digest_algorithm(&cbs));
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EXPECT_EQ(0u, CBS_len(&cbs));
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// Missing parameters are tolerated for compatibility.
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CBS_init(&cbs, kSHA256NoParam, sizeof(kSHA256NoParam));
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EXPECT_EQ(EVP_sha256(), EVP_parse_digest_algorithm(&cbs));
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EXPECT_EQ(0u, CBS_len(&cbs));
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// Garbage parameters are not.
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CBS_init(&cbs, kSHA256GarbageParam, sizeof(kSHA256GarbageParam));
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EXPECT_FALSE(EVP_parse_digest_algorithm(&cbs));
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}
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TEST(DigestTest, TransformBlocks) {
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uint8_t blocks[SHA256_CBLOCK * 10];
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for (size_t i = 0; i < sizeof(blocks); i++) {
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blocks[i] = i*3;
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}
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SHA256_CTX ctx1;
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SHA256_Init(&ctx1);
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SHA256_Update(&ctx1, blocks, sizeof(blocks));
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SHA256_CTX ctx2;
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SHA256_Init(&ctx2);
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SHA256_TransformBlocks(ctx2.h, blocks, sizeof(blocks) / SHA256_CBLOCK);
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EXPECT_TRUE(0 == OPENSSL_memcmp(ctx1.h, ctx2.h, sizeof(ctx1.h)));
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}
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