| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #define SHA256_DIGEST_SIZE 32 |
| |
| struct sha256_ctx { |
| uint32_t H[8]; |
| |
| union { |
| uint64_t total64; |
| #define TOTAL64_low (1 - (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)) |
| #define TOTAL64_high (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) |
| uint32_t total[2]; |
| }; |
| |
| uint32_t buflen; |
| |
| union { |
| uint8_t buffer[128]; /* NB: always correctly aligned for UINT32. */ |
| uint32_t buffer32[32]; |
| uint64_t buffer64[16]; |
| }; |
| }; |
| |
| void sha256_init_ctx(struct sha256_ctx *ctx); |
| uint8_t *sha256_finish_ctx(struct sha256_ctx *ctx, uint8_t resbuf[static SHA256_DIGEST_SIZE]); |
| void sha256_process_bytes(const void *buffer, size_t len, struct sha256_ctx *ctx); |
| |
| static inline void sha256_process_bytes_and_size(const void *buffer, size_t len, struct sha256_ctx *ctx) { |
| sha256_process_bytes(&len, sizeof(len), ctx); |
| sha256_process_bytes(buffer, len, ctx); |
| } |
| |
| uint8_t* sha256_direct(const void *buffer, size_t sz, uint8_t result[static SHA256_DIGEST_SIZE]); |
| |
| #define SHA256_DIRECT(buffer, sz) sha256_direct(buffer, sz, (uint8_t[SHA256_DIGEST_SIZE]) {}) |