git / moonbite-core / src/crypto/blake3/blake3_impl.h · raw
#ifndef BLAKE3_IMPL_H#define BLAKE3_IMPL_H#include <assert.h>#include <stdbool.h>#include <stddef.h>#include <stdint.h>#include <string.h>#include "blake3.h"// internal flagsenum blake3_flags { CHUNK_START = 1 << 0, CHUNK_END = 1 << 1, PARENT = 1 << 2, ROOT = 1 << 3, KEYED_HASH = 1 << 4, DERIVE_KEY_CONTEXT = 1 << 5, DERIVE_KEY_MATERIAL = 1 << 6,};// This C implementation tries to support recent versions of GCC, Clang, and// MSVC.#if defined(_MSC_VER)#define INLINE static __forceinline#else#define INLINE static inline __attribute__((always_inline))#endif#if defined(__x86_64__) || defined(_M_X64) #define IS_X86#define IS_X86_64#endif#if defined(__i386__) || defined(_M_IX86)#define IS_X86#define IS_X86_32#endif#if defined(IS_X86)#if defined(_MSC_VER)#include <intrin.h>#endif#include <immintrin.h>#endif#if defined(IS_X86)#define MAX_SIMD_DEGREE 16#elif defined(BLAKE3_USE_NEON)#define MAX_SIMD_DEGREE 4#else#define MAX_SIMD_DEGREE 1#endif// There are some places where we want a static size that's equal to the// MAX_SIMD_DEGREE, but also at least 2.#define MAX_SIMD_DEGREE_OR_2 (MAX_SIMD_DEGREE > 2 ? MAX_SIMD_DEGREE : 2)static const uint32_t IV[8] = {0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL, 0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL};static const uint8_t MSG_SCHEDULE[7][16] = { {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, {2, 6, 3, 10, 7, 0, 4, 13, 1, 11, 12, 5, 9, 14, 15, 8}, {3, 4, 10, 12, 13, 2, 7, 14, 6, 5, 9, 0, 11, 15, 8, 1}, {10, 7, 12, 9, 14, 3, 13, 15, 4, 0, 11, 2, 5, 8, 1, 6}, {12, 13, 9, 11, 15, 10, 14, 8, 7, 2, 5, 3, 0, 1, 6, 4}, {9, 14, 11, 5, 8, 12, 15, 1, 13, 3, 0, 10, 2, 6, 4, 7}, {11, 15, 5, 0, 1, 9, 8, 6, 14, 10, 2, 12, 3, 4, 7, 13},};/* Find index of the highest set bit *//* x is assumed to be nonzero. */static unsigned int highest_one(uint64_t x) {#if defined(__GNUC__) || defined(__clang__) return 63 ^ __builtin_clzll(x);#elif defined(_MSC_VER) && defined(IS_X86_64) unsigned long index; _BitScanReverse64(&index, x); return index;#elif defined(_MSC_VER) && defined(IS_X86_32) if(x >> 32) { unsigned long index; _BitScanReverse(&index, x >> 32); return 32 + index; } else { unsigned long index; _BitScanReverse(&index, x); return index; }#else unsigned int c = 0; if(x & 0xffffffff00000000ULL) { x >>= 32; c += 32; } if(x & 0x00000000ffff0000ULL) { x >>= 16; c += 16; } if(x & 0x000000000000ff00ULL) { x >>= 8; c += 8; } if(x & 0x00000000000000f0ULL) { x >>= 4; c += 4; } if(x & 0x000000000000000cULL) { x >>= 2; c += 2; } if(x & 0x0000000000000002ULL) { c += 1; } return c;#endif}// Count the number of 1 bits.INLINE unsigned int popcnt(uint64_t x) {#if defined(__GNUC__) || defined(__clang__) return __builtin_popcountll(x);#else unsigned int count = 0; while (x != 0) { count += 1; x &= x - 1; } return count;#endif}// Largest power of two less than or equal to x. As a special case, returns 1// when x is 0. INLINE uint64_t round_down_to_power_of_2(uint64_t x) { return 1ULL << highest_one(x | 1);}INLINE uint32_t counter_low(uint64_t counter) { return (uint32_t)counter; }INLINE uint32_t counter_high(uint64_t counter) { return (uint32_t)(counter >> 32);}INLINE uint32_t load32(const void *src) { const uint8_t *p = (const uint8_t *)src; return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) | ((uint32_t)(p[2]) << 16) | ((uint32_t)(p[3]) << 24);}INLINE void load_key_words(const uint8_t key[BLAKE3_KEY_LEN], uint32_t key_words[8]) { key_words[0] = load32(&key[0 * 4]); key_words[1] = load32(&key[1 * 4]); key_words[2] = load32(&key[2 * 4]); key_words[3] = load32(&key[3 * 4]); key_words[4] = load32(&key[4 * 4]); key_words[5] = load32(&key[5 * 4]); key_words[6] = load32(&key[6 * 4]); key_words[7] = load32(&key[7 * 4]);}INLINE void store32(void *dst, uint32_t w) { uint8_t *p = (uint8_t *)dst; p[0] = (uint8_t)(w >> 0); p[1] = (uint8_t)(w >> 8); p[2] = (uint8_t)(w >> 16); p[3] = (uint8_t)(w >> 24);}INLINE void store_cv_words(uint8_t bytes_out[32], uint32_t cv_words[8]) { store32(&bytes_out[0 * 4], cv_words[0]); store32(&bytes_out[1 * 4], cv_words[1]); store32(&bytes_out[2 * 4], cv_words[2]); store32(&bytes_out[3 * 4], cv_words[3]); store32(&bytes_out[4 * 4], cv_words[4]); store32(&bytes_out[5 * 4], cv_words[5]); store32(&bytes_out[6 * 4], cv_words[6]); store32(&bytes_out[7 * 4], cv_words[7]);}void blake3_compress_in_place(uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags);void blake3_compress_xof(const uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags, uint8_t out[64]);void blake3_hash_many(const uint8_t *const *inputs, size_t num_inputs, size_t blocks, const uint32_t key[8], uint64_t counter, bool increment_counter, uint8_t flags, uint8_t flags_start, uint8_t flags_end, uint8_t *out);size_t blake3_simd_degree(void);// Declarations for implementation-specific functions.void blake3_compress_in_place_portable(uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags);void blake3_compress_xof_portable(const uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags, uint8_t out[64]);void blake3_hash_many_portable(const uint8_t *const *inputs, size_t num_inputs, size_t blocks, const uint32_t key[8], uint64_t counter, bool increment_counter, uint8_t flags, uint8_t flags_start, uint8_t flags_end, uint8_t *out);#if defined(IS_X86)#if !defined(BLAKE3_NO_SSE2)void blake3_compress_in_place_sse2(uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags);void blake3_compress_xof_sse2(const uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags, uint8_t out[64]);void blake3_hash_many_sse2(const uint8_t *const *inputs, size_t num_inputs, size_t blocks, const uint32_t key[8], uint64_t counter, bool increment_counter, uint8_t flags, uint8_t flags_start, uint8_t flags_end, uint8_t *out);#endif#if !defined(BLAKE3_NO_SSE41)void blake3_compress_in_place_sse41(uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags);void blake3_compress_xof_sse41(const uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags, uint8_t out[64]);void blake3_hash_many_sse41(const uint8_t *const *inputs, size_t num_inputs, size_t blocks, const uint32_t key[8], uint64_t counter, bool increment_counter, uint8_t flags, uint8_t flags_start, uint8_t flags_end, uint8_t *out);#endif#if !defined(BLAKE3_NO_AVX2)void blake3_hash_many_avx2(const uint8_t *const *inputs, size_t num_inputs, size_t blocks, const uint32_t key[8], uint64_t counter, bool increment_counter, uint8_t flags, uint8_t flags_start, uint8_t flags_end, uint8_t *out);#endif#if !defined(BLAKE3_NO_AVX512)void blake3_compress_in_place_avx512(uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags);void blake3_compress_xof_avx512(const uint32_t cv[8], const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len, uint64_t counter, uint8_t flags, uint8_t out[64]);void blake3_hash_many_avx512(const uint8_t *const *inputs, size_t num_inputs, size_t blocks, const uint32_t key[8], uint64_t counter, bool increment_counter, uint8_t flags, uint8_t flags_start, uint8_t flags_end, uint8_t *out);#endif#endif#if defined(BLAKE3_USE_NEON)void blake3_hash_many_neon(const uint8_t *const *inputs, size_t num_inputs, size_t blocks, const uint32_t key[8], uint64_t counter, bool increment_counter, uint8_t flags, uint8_t flags_start, uint8_t flags_end, uint8_t *out);#endif#endif /* BLAKE3_IMPL_H */