diff options
Diffstat (limited to 'include/crypto/sha2.h')
| -rw-r--r-- | include/crypto/sha2.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/crypto/sha2.h b/include/crypto/sha2.h new file mode 100644 index 0000000000..1d787e16d9 --- /dev/null +++ b/include/crypto/sha2.h @@ -0,0 +1,50 @@ +/* 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 */ |