thodg/libgit2/tests/util/sha256.c

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• Hash : b900981c
  Author :
  Date : 2021-12-12T14:25:25
  

  sha: add sha256 algorithm Add support for a SHA256 hash algorithm, and add the "builtin" SHA256 hash engine (from RFC 6234).

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• tests/util/sha256.c

• #include "clar_libgit2.h"
  #include "hash.h"
  
  #define FIXTURE_DIR "sha1"
  
  #ifdef GIT_SHA256_WIN32
  static git_hash_win32_provider_t orig_provider;
  #endif
  
  void test_sha256__initialize(void)
  {
  #ifdef GIT_SHA256_WIN32
  	orig_provider = git_hash_win32_provider();
  #endif
  
  	cl_fixture_sandbox(FIXTURE_DIR);
  }
  
  void test_sha256__cleanup(void)
  {
  #ifdef GIT_SHA256_WIN32
  	git_hash_win32_set_provider(orig_provider);
  #endif
  
  	cl_fixture_cleanup(FIXTURE_DIR);
  }
  
  static int sha256_file(unsigned char *out, const char *filename)
  {
  	git_hash_ctx ctx;
  	char buf[2048];
  	int fd, ret;
  	ssize_t read_len;
  
  	fd = p_open(filename, O_RDONLY);
  	cl_assert(fd >= 0);
  
  	cl_git_pass(git_hash_ctx_init(&ctx, GIT_HASH_ALGORITHM_SHA256));
  
  	while ((read_len = p_read(fd, buf, 2048)) > 0)
  		cl_git_pass(git_hash_update(&ctx, buf, (size_t)read_len));
  
  	cl_assert_equal_i(0, read_len);
  	p_close(fd);
  
  	ret = git_hash_final(out, &ctx);
  	git_hash_ctx_cleanup(&ctx);
  
  	return ret;
  }
  
  void test_sha256__empty(void)
  {
  	unsigned char expected[GIT_HASH_SHA256_SIZE] = {
  		0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14,
  		0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
  		0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
  		0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55
  	};
  	unsigned char actual[GIT_HASH_SHA256_SIZE];
  
  	cl_git_pass(sha256_file(actual, FIXTURE_DIR "/empty"));
  	cl_assert_equal_i(0, memcmp(expected, actual, GIT_HASH_SHA256_SIZE));
  }
  
  void test_sha256__hello(void)
  {
  	unsigned char expected[GIT_HASH_SHA256_SIZE] = {
  		0xaa, 0x32, 0x7f, 0xae, 0x5c, 0x91, 0x58, 0x3a,
  		0x4f, 0xb6, 0x54, 0xcc, 0xb6, 0xc2, 0xb1, 0x0c,
  		0x77, 0xd7, 0x49, 0xc9, 0x91, 0x2a, 0x8d, 0x6b,
  		0x47, 0x26, 0x13, 0xc0, 0xa0, 0x4b, 0x4d, 0xad
  	};
  	unsigned char actual[GIT_HASH_SHA256_SIZE];
  
  	cl_git_pass(sha256_file(actual, FIXTURE_DIR "/hello_c"));
  	cl_assert_equal_i(0, memcmp(expected, actual, GIT_HASH_SHA256_SIZE));
  }
  
  void test_sha256__pdf(void)
  {
  	unsigned char expected[GIT_HASH_SHA256_SIZE] = {
  		0x2b, 0xb7, 0x87, 0xa7, 0x3e, 0x37, 0x35, 0x2f,
  		0x92, 0x38, 0x3a, 0xbe, 0x7e, 0x29, 0x02, 0x93,
  		0x6d, 0x10, 0x59, 0xad, 0x9f, 0x1b, 0xa6, 0xda,
  		0xaa, 0x9c, 0x1e, 0x58, 0xee, 0x69, 0x70, 0xd0
  	};
  	unsigned char actual[GIT_HASH_SHA256_SIZE];
  
  	cl_git_pass(sha256_file(actual, FIXTURE_DIR "/shattered-1.pdf"));
  	cl_assert_equal_i(0, memcmp(expected, actual, GIT_HASH_SHA256_SIZE));
  }
  
  void test_sha256__win32_providers(void)
  {
  #ifdef GIT_SHA256_WIN32
  	unsigned char expected[GIT_HASH_SHA256_SIZE] = {
  		0x2b, 0xb7, 0x87, 0xa7, 0x3e, 0x37, 0x35, 0x2f,
  		0x92, 0x38, 0x3a, 0xbe, 0x7e, 0x29, 0x02, 0x93,
  		0x6d, 0x10, 0x59, 0xad, 0x9f, 0x1b, 0xa6, 0xda,
  		0xaa, 0x9c, 0x1e, 0x58, 0xee, 0x69, 0x70, 0xd0
  	};
  	unsigned char actual[GIT_HASH_SHA256_SIZE];
  
  	git_hash_win32_set_provider(GIT_HASH_WIN32_CRYPTOAPI);
  	cl_git_pass(sha256_file(actual, FIXTURE_DIR "/shattered-1.pdf"));
  	cl_assert_equal_i(0, memcmp(expected, actual, GIT_HASH_SHA256_SIZE));
  
  	git_hash_win32_set_provider(GIT_HASH_WIN32_CNG);
  	cl_git_pass(sha256_file(actual, FIXTURE_DIR "/shattered-1.pdf"));
  	cl_assert_equal_i(0, memcmp(expected, actual, GIT_HASH_SHA256_SIZE));
  #endif
  }
  

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