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| author | Eric Biggers <ebiggers@kernel.org> | 2025-10-25 22:50:28 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@kernel.org> | 2025-11-05 20:02:35 -0800 |
| commit | 0354d3c1f1b8628e60eceb304b6d2ef75eea6f41 (patch) | |
| tree | 833f0c77ff02c0692369627bcc2df1a2967a222d | |
| parent | 04171105d33ae77945791a637d23b76789f3bef9 (diff) | |
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>
| -rw-r--r-- | lib/crypto/sha3.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/crypto/sha3.c b/lib/crypto/sha3.c index 8434f9bff138..32b7074de792 100644 --- a/lib/crypto/sha3.c +++ b/lib/crypto/sha3.c @@ -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); |