From 645e9084b34afb9f6ba591fc82eb9a8393259015 Mon Sep 17 00:00:00 2001 From: Mitya Selivanov Date: Sat, 4 Feb 2023 13:07:00 +0100 Subject: sha256 --- source/kit/CMakeLists.txt | 8 +- source/kit/sha256.c | 146 +++++++++++++++++++++++++++++++++++ source/kit/sha256.h | 29 +++++++ source/test/unittests/CMakeLists.txt | 2 +- source/test/unittests/sha256.test.c | 42 ++++++++++ 5 files changed, 223 insertions(+), 4 deletions(-) create mode 100644 source/kit/sha256.c create mode 100644 source/kit/sha256.h create mode 100644 source/test/unittests/sha256.test.c diff --git a/source/kit/CMakeLists.txt b/source/kit/CMakeLists.txt index 4113668..e776a29 100644 --- a/source/kit/CMakeLists.txt +++ b/source/kit/CMakeLists.txt @@ -2,9 +2,10 @@ target_sources( kit PRIVATE input_buffer.c bigint.c status.c secure_random.c - thread.posix.c atomic.win32.c condition_variable.c thread.win32.c - move_back.c input_stream.c file.c string_ref.c async_function.c - allocator.c array_ref.c dynamic_array.c mutex.c mersenne_twister_64.c + sha256.c thread.posix.c atomic.win32.c condition_variable.c + thread.win32.c move_back.c input_stream.c file.c string_ref.c + async_function.c allocator.c array_ref.c dynamic_array.c mutex.c + mersenne_twister_64.c PUBLIC $ $ @@ -22,6 +23,7 @@ target_sources( $ $ $ + $ $ $ $) diff --git a/source/kit/sha256.c b/source/kit/sha256.c new file mode 100644 index 0000000..5d6a37a --- /dev/null +++ b/source/kit/sha256.c @@ -0,0 +1,146 @@ +#include "sha256.h" + +#include +#include + +#define ROTLEFT(a, b) (((a) << (b)) | ((a) >> (32 - (b)))) +#define ROTRIGHT(a, b) (((a) >> (b)) | ((a) << (32 - (b)))) + +#define CH(x, y, z) (((x) & (y)) ^ (~(x) & (z))) +#define MAJ(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) +#define EP0(x) (ROTRIGHT(x, 2) ^ ROTRIGHT(x, 13) ^ ROTRIGHT(x, 22)) +#define EP1(x) (ROTRIGHT(x, 6) ^ ROTRIGHT(x, 11) ^ ROTRIGHT(x, 25)) +#define SIG0(x) (ROTRIGHT(x, 7) ^ ROTRIGHT(x, 18) ^ ((x) >> 3)) +#define SIG1(x) (ROTRIGHT(x, 17) ^ ROTRIGHT(x, 19) ^ ((x) >> 10)) + +static const uint32_t k[64] = { + 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, + 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, + 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, + 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, + 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, + 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, + 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, + 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, + 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, + 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, + 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 +}; + +static void sha256_transform(uint32_t *const state, + const uint8_t *const data) { + assert(state != NULL); + assert(data != NULL); + + uint32_t a, b, c, d, e, f, g, h, i, j, t1, t2, m[64]; + + for (i = 0, j = 0; i < 16; ++i, j += 4) + m[i] = ((uint32_t) data[j] << 24) | + ((uint32_t) data[j + 1] << 16) | + ((uint32_t) data[j + 2] << 8) | ((uint32_t) data[j + 3]); + for (; i < 64; ++i) + m[i] = SIG1(m[i - 2]) + m[i - 7] + SIG0(m[i - 15]) + m[i - 16]; + + a = state[0]; + b = state[1]; + c = state[2]; + d = state[3]; + e = state[4]; + f = state[5]; + g = state[6]; + h = state[7]; + + for (i = 0; i < 64; ++i) { + t1 = h + EP1(e) + CH(e, f, g) + k[i] + m[i]; + t2 = EP0(a) + MAJ(a, b, c); + h = g; + g = f; + f = e; + e = d + t1; + d = c; + c = b; + b = a; + a = t1 + t2; + } + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + state[4] += e; + state[5] += f; + state[6] += g; + state[7] += h; +} + +kit_sha256_hash_t kit_sha256(ptrdiff_t const in_size, + uint8_t const *const in_data) { + assert(in_size >= 0); + assert(in_data != NULL); + + uint32_t state[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, + 0xa54ff53a, 0x510e527f, 0x9b05688c, + 0x1f83d9ab, 0x5be0cd19 }; + + uint8_t data[64]; + + ptrdiff_t i; + ptrdiff_t datalen = 0; + ptrdiff_t bitlen = 0; + + if (in_data != NULL) + for (i = 0; i < in_size; ++i) { + data[datalen] = in_data[i]; + datalen++; + + if (datalen != 64) + continue; + + sha256_transform(state, data); + bitlen += 512; + datalen = 0; + } + + i = datalen; + + if (datalen < 56) { + data[i++] = 0x80; + while (i < 56) data[i++] = 0x00; + } else { + data[i++] = 0x80; + while (i < 64) data[i++] = 0x00; + + sha256_transform(state, data); + memset(data, 0, 56); + } + + bitlen += datalen * 8; + data[63] = bitlen; + data[62] = bitlen >> 8; + data[61] = bitlen >> 16; + data[60] = bitlen >> 24; + data[59] = bitlen >> 32; + data[58] = bitlen >> 40; + data[57] = bitlen >> 48; + data[56] = bitlen >> 56; + + sha256_transform(state, data); + + kit_sha256_hash_t hash; + memset(&hash, 0, sizeof hash); + + for (i = 0; i < 4; ++i) { + hash.v[i] = (state[0] >> (24 - i * 8)) & 0xff; + hash.v[i + 4] = (state[1] >> (24 - i * 8)) & 0xff; + hash.v[i + 8] = (state[2] >> (24 - i * 8)) & 0xff; + hash.v[i + 12] = (state[3] >> (24 - i * 8)) & 0xff; + hash.v[i + 16] = (state[4] >> (24 - i * 8)) & 0xff; + hash.v[i + 20] = (state[5] >> (24 - i * 8)) & 0xff; + hash.v[i + 24] = (state[6] >> (24 - i * 8)) & 0xff; + hash.v[i + 28] = (state[7] >> (24 - i * 8)) & 0xff; + } + + return hash; +} diff --git a/source/kit/sha256.h b/source/kit/sha256.h new file mode 100644 index 0000000..806bff3 --- /dev/null +++ b/source/kit/sha256.h @@ -0,0 +1,29 @@ +#ifndef KIT_SHA256_H +#define KIT_SHA256_H + +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +enum { KIT_SHA256_BLOCK_SIZE = 32 }; + +typedef struct { + uint8_t v[KIT_SHA256_BLOCK_SIZE]; +} kit_sha256_hash_t; + +kit_sha256_hash_t kit_sha256(ptrdiff_t size, uint8_t const *data); + +#ifdef __cplusplus +} +#endif + +#ifndef KIT_DISABLE_SHORT_NAMES +# define SHA256_BLOCK_SIZE KIT_SHA256_BLOCK_SIZE +# define sha256_hash_t kit_sha256_hash_t +# define sha256 kit_sha256 +#endif + +#endif diff --git a/source/test/unittests/CMakeLists.txt b/source/test/unittests/CMakeLists.txt index 2ebc195..a73ca6e 100644 --- a/source/test/unittests/CMakeLists.txt +++ b/source/test/unittests/CMakeLists.txt @@ -3,6 +3,6 @@ target_sources( PRIVATE async_function.test.c bigint.test.c mutex.test.c test_duration.test.c main.test.c string_ref.test.c atomic.test.c thread.test.c - array_ref.test.c input_stream.test.c lower_bound.test.c + array_ref.test.c input_stream.test.c sha256.test.c lower_bound.test.c secure_random.test.c condition_variable.test.c mersenne_twister_64.test.c input_buffer.test.c move_back.test.c dynamic_array.test.c file.test.c) diff --git a/source/test/unittests/sha256.test.c b/source/test/unittests/sha256.test.c new file mode 100644 index 0000000..e74b286 --- /dev/null +++ b/source/test/unittests/sha256.test.c @@ -0,0 +1,42 @@ +#include "../../kit/sha256.h" +#include "../../kit/array_ref.h" + +#define KIT_TEST_FILE sha256_64 +#include "../../kit_test/test.h" + +#include + +TEST("sha256") { + uint8_t text1[] = "abc"; + uint8_t text2[] = + "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"; + + uint8_t text3[1000000]; + memset(text3, 'a', sizeof text3); + + uint8_t hash1[] = { + 0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea, 0x41, 0x41, 0x40, + 0xde, 0x5d, 0xae, 0x22, 0x23, 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, + 0x7a, 0x9c, 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad + }; + uint8_t hash2[] = { + 0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8, 0xe5, 0xc0, 0x26, + 0x93, 0x0c, 0x3e, 0x60, 0x39, 0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, + 0x21, 0x67, 0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1 + }; + uint8_t hash3[] = { + 0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92, 0x81, 0xa1, 0xc7, + 0xe2, 0x84, 0xd7, 0x3e, 0x67, 0xf1, 0x80, 0x9a, 0x48, 0xa4, 0x97, + 0x20, 0x0e, 0x04, 0x6d, 0x39, 0xcc, 0xc7, 0x11, 0x2c, 0xd0 + }; + + REQUIRE(ar_equal_bytes(1, SHA256_BLOCK_SIZE, + sha256((sizeof text1) - 1, text1).v, 1, + SHA256_BLOCK_SIZE, hash1)); + REQUIRE(ar_equal_bytes(1, SHA256_BLOCK_SIZE, + sha256((sizeof text2) - 1, text2).v, 1, + SHA256_BLOCK_SIZE, hash2)); + REQUIRE(ar_equal_bytes(1, SHA256_BLOCK_SIZE, + sha256(sizeof text3, text3).v, 1, + SHA256_BLOCK_SIZE, hash3)); +} -- cgit v1.2.3