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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Common values for SHA-2 algorithms
*
* Copyright 2022 NXP
*/
#ifndef _CRYPTO_SHA2_H
#define _CRYPTO_SHA2_H
#include <linux/types.h>
#define SHA256_DIGEST_SIZE 32
#define SHA256_BLOCK_SIZE 64
#define SHA256_H0 0x6a09e667UL
#define SHA256_H1 0xbb67ae85UL
#define SHA256_H2 0x3c6ef372UL
#define SHA256_H3 0xa54ff53aUL
#define SHA256_H4 0x510e527fUL
#define SHA256_H5 0x9b05688cUL
#define SHA256_H6 0x1f83d9abUL
#define SHA256_H7 0x5be0cd19UL
struct sha256_state {
uint32_t state[SHA256_DIGEST_SIZE / 4];
uint64_t count;
uint8_t buf[SHA256_BLOCK_SIZE];
};
/*
* Stand-alone implementation of the SHA256 algorithm.
*/
static inline void sha256_init(struct sha256_state *sctx)
{
sctx->state[0] = SHA256_H0;
sctx->state[1] = SHA256_H1;
sctx->state[2] = SHA256_H2;
sctx->state[3] = SHA256_H3;
sctx->state[4] = SHA256_H4;
sctx->state[5] = SHA256_H5;
sctx->state[6] = SHA256_H6;
sctx->state[7] = SHA256_H7;
sctx->count = 0;
}
void sha256_ce(const unsigned char *data, unsigned int ilen, unsigned char *output);
#endif /* _CRYPTO_SHA2_H */
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