From 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:49:52 +0200 Subject: Adding upstream version 255.4. Signed-off-by: Daniel Baumann --- src/fundamental/sha256.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 src/fundamental/sha256.h (limited to 'src/fundamental/sha256.h') diff --git a/src/fundamental/sha256.h b/src/fundamental/sha256.h new file mode 100644 index 0000000..dbb08e3 --- /dev/null +++ b/src/fundamental/sha256.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include +#include + +#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]) {}) -- cgit v1.2.3