mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 08:28:13 +00:00
a24d22b225
Currently <crypto/sha.h> contains declarations for both SHA-1 and SHA-2, and <crypto/sha3.h> contains declarations for SHA-3. This organization is inconsistent, but more importantly SHA-1 is no longer considered to be cryptographically secure. So to the extent possible, SHA-1 shouldn't be grouped together with any of the other SHA versions, and usage of it should be phased out. Therefore, split <crypto/sha.h> into two headers <crypto/sha1.h> and <crypto/sha2.h>, and make everyone explicitly specify whether they want the declarations for SHA-1, SHA-2, or both. This avoids making the SHA-1 declarations visible to files that don't want anything to do with SHA-1. It also prepares for potentially moving sha1.h into a new insecure/ or dangerous/ directory. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/* 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 */
|