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lib/crypto: sha1: Add at_least decoration to fixed-size array params

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Add the at_least (i.e. 'static') decoration to the fixed-size array
parameters of the sha1 library functions.  This causes clang to warn
when a too-small array of known size is passed.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com>
Link: https://lore.kernel.org/r/20251122194206.31822-6-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
This commit is contained in:
Eric Biggers
2025-11-22 11:42:05 -08:00
parent c2099fa616
commit d5cc4e731d
1 changed files with 7 additions and 5 deletions
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12
include/crypto/sha1.h
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@@ -84,7 +84,7 @@ void sha1_update(struct sha1_ctx *ctx, const u8 *data, size_t len);
*
* Context: Any context.
*/
void sha1_final(struct sha1_ctx *ctx, u8 out[SHA1_DIGEST_SIZE]);
void sha1_final(struct sha1_ctx *ctx, u8 out[at_least SHA1_DIGEST_SIZE]);
/**
* sha1() - Compute SHA-1 message digest in one shot
@@ -94,7 +94,7 @@ void sha1_final(struct sha1_ctx *ctx, u8 out[SHA1_DIGEST_SIZE]);
*
* Context: Any context.
*/
void sha1(const u8 *data, size_t len, u8 out[SHA1_DIGEST_SIZE]);
void sha1(const u8 *data, size_t len, u8 out[at_least SHA1_DIGEST_SIZE]);
/**
* struct hmac_sha1_key - Prepared key for HMAC-SHA1
@@ -181,7 +181,8 @@ static inline void hmac_sha1_update(struct hmac_sha1_ctx *ctx,
*
* Context: Any context.
*/
void hmac_sha1_final(struct hmac_sha1_ctx *ctx, u8 out[SHA1_DIGEST_SIZE]);
void hmac_sha1_final(struct hmac_sha1_ctx *ctx,
u8 out[at_least SHA1_DIGEST_SIZE]);
/**
* hmac_sha1() - Compute HMAC-SHA1 in one shot, using a prepared key
@@ -195,7 +196,8 @@ void hmac_sha1_final(struct hmac_sha1_ctx *ctx, u8 out[SHA1_DIGEST_SIZE]);
* Context: Any context.
*/
void hmac_sha1(const struct hmac_sha1_key *key,
const u8 *data, size_t data_len, u8 out[SHA1_DIGEST_SIZE]);
const u8 *data, size_t data_len,
u8 out[at_least SHA1_DIGEST_SIZE]);
/**
* hmac_sha1_usingrawkey() - Compute HMAC-SHA1 in one shot, using a raw key
@@ -212,6 +214,6 @@ void hmac_sha1(const struct hmac_sha1_key *key,
*/
void hmac_sha1_usingrawkey(const u8 *raw_key, size_t raw_key_len,
const u8 *data, size_t data_len,
u8 out[SHA1_DIGEST_SIZE]);
u8 out[at_least SHA1_DIGEST_SIZE]);
#endif /* _CRYPTO_SHA1_H */