/* SPDX-License-Identifier: GPL-2.0 *//* * Common values for SHA-2 algorithms */ #ifndef _CRYPTO_SHA2_H#define _CRYPTO_SHA2_H #include <linux/types.h> #define SHA224_DIGEST_SIZE	28#define SHA224_BLOCK_SIZE	64 #define SHA256_DIGEST_SIZE      32#define SHA256_BLOCK_SIZE       64 #define SHA384_DIGEST_SIZE      48#define SHA384_BLOCK_SIZE       128 #define SHA512_DIGEST_SIZE      64#define SHA512_BLOCK_SIZE       128 #define SHA224_H0	0xc1059ed8UL#define SHA224_H1	0x367cd507UL#define SHA224_H2	0x3070dd17UL#define SHA224_H3	0xf70e5939UL#define SHA224_H4	0xffc00b31UL#define SHA224_H5	0x68581511UL#define SHA224_H6	0x64f98fa7UL#define SHA224_H7	0xbefa4fa4UL #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 #define SHA384_H0	0xcbbb9d5dc1059ed8ULL#define SHA384_H1	0x629a292a367cd507ULL#define SHA384_H2	0x9159015a3070dd17ULL#define SHA384_H3	0x152fecd8f70e5939ULL#define SHA384_H4	0x67332667ffc00b31ULL#define SHA384_H5	0x8eb44a8768581511ULL#define SHA384_H6	0xdb0c2e0d64f98fa7ULL#define SHA384_H7	0x47b5481dbefa4fa4ULL #define SHA512_H0	0x6a09e667f3bcc908ULL#define SHA512_H1	0xbb67ae8584caa73bULL#define SHA512_H2	0x3c6ef372fe94f82bULL#define SHA512_H3	0xa54ff53a5f1d36f1ULL#define SHA512_H4	0x510e527fade682d1ULL#define SHA512_H5	0x9b05688c2b3e6c1fULL#define SHA512_H6	0x1f83d9abfb41bd6bULL#define SHA512_H7	0x5be0cd19137e2179ULL extern const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE]; extern const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE]; extern const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE]; extern const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE]; struct sha256_state {	u32 state[SHA256_DIGEST_SIZE / 4];	u64 count;	u8 buf[SHA256_BLOCK_SIZE];}; struct sha512_state {	u64 state[SHA512_DIGEST_SIZE / 8];	u64 count[2];	u8 buf[SHA512_BLOCK_SIZE];}; struct shash_desc; extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data,			      unsigned int len); extern int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,			       unsigned int len, u8 *hash); extern int crypto_sha512_update(struct shash_desc *desc, const u8 *data,			      unsigned int len); extern int crypto_sha512_finup(struct shash_desc *desc, const u8 *data,			       unsigned int len, u8 *hash); /* * Stand-alone implementation of the SHA256 algorithm. It is designed to * have as little dependencies as possible so it can be used in the * kexec_file purgatory. In other cases you should generally use the * hash APIs from include/crypto/hash.h. Especially when hashing large * amounts of data as those APIs may be hw-accelerated. * * For details see lib/crypto/sha256.c */ 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_update(struct sha256_state *sctx, const u8 *data, unsigned int len);void sha256_final(struct sha256_state *sctx, u8 *out);void sha256(const u8 *data, unsigned int len, u8 *out); static inline void sha224_init(struct sha256_state *sctx){	sctx->state[0] = SHA224_H0;	sctx->state[1] = SHA224_H1;	sctx->state[2] = SHA224_H2;	sctx->state[3] = SHA224_H3;	sctx->state[4] = SHA224_H4;	sctx->state[5] = SHA224_H5;	sctx->state[6] = SHA224_H6;	sctx->state[7] = SHA224_H7;	sctx->count = 0;}void sha224_update(struct sha256_state *sctx, const u8 *data, unsigned int len);void sha224_final(struct sha256_state *sctx, u8 *out); #endif /* _CRYPTO_SHA2_H */