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lib/crypto: sha3: Support arch overrides of one-shot digest functions 

Add support for architecture-specific overrides of sha3_224(),
sha3_256(), sha3_384(), and sha3_512().  This will be used to implement
these functions more efficiently on s390 than is possible via the usual
init + update + final flow.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Harald Freudenberger <freude@linux.ibm.com>
Link: https://lore.kernel.org/r/20251026055032.1413733-12-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
pull/1354/merge
Eric Biggers 2025-10-25 22:50:28 -07:00
parent 04171105d3
commit 0354d3c1f1
1 changed files with 37 additions and 0 deletions
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37
lib/crypto/sha3.c
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@ -280,10 +280,41 @@ void shake_squeeze(struct shake_ctx *shake_ctx, u8 *out, size_t out_len)
}
EXPORT_SYMBOL_GPL(shake_squeeze);
#ifndef sha3_224_arch
static inline bool sha3_224_arch(const u8 *in, size_t in_len,
u8 out[SHA3_224_DIGEST_SIZE])
{
return false;
}
#endif
#ifndef sha3_256_arch
static inline bool sha3_256_arch(const u8 *in, size_t in_len,
u8 out[SHA3_256_DIGEST_SIZE])
{
return false;
}
#endif
#ifndef sha3_384_arch
static inline bool sha3_384_arch(const u8 *in, size_t in_len,
u8 out[SHA3_384_DIGEST_SIZE])
{
return false;
}
#endif
#ifndef sha3_512_arch
static inline bool sha3_512_arch(const u8 *in, size_t in_len,
u8 out[SHA3_512_DIGEST_SIZE])
{
return false;
}
#endif
void sha3_224(const u8 *in, size_t in_len, u8 out[SHA3_224_DIGEST_SIZE])
{
struct sha3_ctx ctx;
if (sha3_224_arch(in, in_len, out))
return;
sha3_224_init(&ctx);
sha3_update(&ctx, in, in_len);
sha3_final(&ctx, out);
@ -294,6 +325,8 @@ void sha3_256(const u8 *in, size_t in_len, u8 out[SHA3_256_DIGEST_SIZE])
{
struct sha3_ctx ctx;
if (sha3_256_arch(in, in_len, out))
return;
sha3_256_init(&ctx);
sha3_update(&ctx, in, in_len);
sha3_final(&ctx, out);
@ -304,6 +337,8 @@ void sha3_384(const u8 *in, size_t in_len, u8 out[SHA3_384_DIGEST_SIZE])
{
struct sha3_ctx ctx;
if (sha3_384_arch(in, in_len, out))
return;
sha3_384_init(&ctx);
sha3_update(&ctx, in, in_len);
sha3_final(&ctx, out);
@ -314,6 +349,8 @@ void sha3_512(const u8 *in, size_t in_len, u8 out[SHA3_512_DIGEST_SIZE])
{
struct sha3_ctx ctx;
if (sha3_512_arch(in, in_len, out))
return;
sha3_512_init(&ctx);
sha3_update(&ctx, in, in_len);
sha3_final(&ctx, out);