kernel/linux.git/crypto/shash.c, branch v7.0.10

crypto: api - remove unnecessary forward declarations

2026-01-23T05:48:43+00:00

Add the __maybe_unused attribute to the function definitions and remove the now-unnecessary forward declarations. Signed-off-by: Thorsten Blum Signed-off-by: Herbert Xu

crypto: shash - Use unregister_shashes in register_shashes

2026-01-23T05:48:42+00:00

Replace the for loop with a call to crypto_unregister_shashes(). Return 'ret' immediately and remove the goto statement to simplify the error handling code. No functional changes. Signed-off-by: Thorsten Blum Signed-off-by: Herbert Xu

crypto: shash - Fix buffer overrun in import function

2025-05-27T05:43:32+00:00

Only set the partial block length to zero if the algorithm is block-only. Otherwise the descriptor context could be empty, e.g., for digest_null. Reported-by: syzbot+4851c19615d35f0e4d68@syzkaller.appspotmail.com Fixes: 7650f826f7b2 ("crypto: shash - Handle partial blocks in API") Signed-off-by: Herbert Xu

crypto: shash - Set reqsize in shash_alg

2025-05-19T05:48:19+00:00

Make reqsize static for shash algorithms. Signed-off-by: Herbert Xu

crypto: hash - Add export_core and import_core hooks

2025-05-19T05:48:19+00:00

Add export_core and import_core hooks. These are intended to be used by algorithms which are wrappers around block-only algorithms, but are not themselves block-only, e.g., hmac. Signed-off-by: Herbert Xu

crypto: shash - Mark shash algorithms as REQ_VIRT

2025-05-05T10:20:46+00:00

Mark shash algorithms with the REQ_VIRT bit as they can handle virtual addresses as is. Signed-off-by: Herbert Xu

crypto: shash - Cap state size to HASH_MAX_STATESIZE

2025-05-05T10:20:46+00:00

Now that all shash algorithms have converted over to the generic export format, limit the shash state size to HASH_MAX_STATESIZE. Signed-off-by: Herbert Xu

crypto: hash - Fix clone error handling

2025-04-28T11:40:54+00:00

Do not copy the exit function in crypto_clone_tfm as it should only be set after init_tfm or clone_tfm has succeeded. Move the setting into crypto_clone_ahash and crypto_clone_shash instead. Also clone the fb if necessary. Signed-off-by: Herbert Xu

crypto: shash - Handle partial blocks in API

2025-04-23T03:33:46+00:00

Provide an option to handle the partial blocks in the shash API. Almost every hash algorithm has a block size and are only able to hash partial blocks on finalisation. Rather than duplicating the partial block handling many times, add this functionality to the shash API. It is optional (e.g., hmac would never need this by relying on the partial block handling of the underlying hash), and to enable it set the bit CRYPTO_AHASH_ALG_BLOCK_ONLY. The export format is always that of the underlying hash export, plus the partial block buffer, followed by a single-byte for the partial block length. Set the bit CRYPTO_AHASH_ALG_FINAL_NONZERO to withhold an extra byte in the partial block. This will come in handy when this is extended to ahash where hardware often can't deal with a zero-length final. It will also be used for algorithms requiring an extra block for finalisation (e.g., cmac). As an optimisation, set the bit CRYPTO_AHASH_ALG_FINUP_MAX if the algorithm wishes to get as much data as possible instead of just the last partial block. The descriptor will be zeroed after finalisation. Signed-off-by: Herbert Xu

crypto: shash - Remove dynamic descsize

2025-04-16T07:36:24+00:00

As all users of the dynamic descsize have been converted to use a static one instead, remove support for dynamic descsize. Signed-off-by: Herbert Xu