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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2025-05-15 13:54:35 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2025-05-19 13:48:19 +0800 |
| commit | c6a12f394c488cf6a7ca35c1ad51e0e88897de2e (patch) | |
| tree | 19333bd2b6830051ddd0e4a8d41633bec9b7a82c /include/crypto | |
| parent | cd5a4d53069ccd7cd48d201c981d5a8a99c93fc4 (diff) | |
| download | linux-c6a12f394c488cf6a7ca35c1ad51e0e88897de2e.tar.gz linux-c6a12f394c488cf6a7ca35c1ad51e0e88897de2e.tar.bz2 linux-c6a12f394c488cf6a7ca35c1ad51e0e88897de2e.zip | |
crypto: hash - Add export_core and import_core hooks
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 <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/hash.h | 10 | ||||
| -rw-r--r-- | include/crypto/internal/hash.h | 3 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h index 9fc9daaaaab4..bf177cf9be10 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -129,6 +129,10 @@ struct ahash_request { * data so the transformation can continue from this point onward. No * data processing happens at this point. Driver must not use * req->result. + * @export_core: Export partial state without partial block. Only defined + * for algorithms that are not block-only. + * @import_core: Import partial state without partial block. Only defined + * for algorithms that are not block-only. * @init_tfm: Initialize the cryptographic transformation object. * This function is called only once at the instantiation * time, right after the transformation context was @@ -151,6 +155,8 @@ struct ahash_alg { int (*digest)(struct ahash_request *req); int (*export)(struct ahash_request *req, void *out); int (*import)(struct ahash_request *req, const void *in); + int (*export_core)(struct ahash_request *req, void *out); + int (*import_core)(struct ahash_request *req, const void *in); int (*setkey)(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen); int (*init_tfm)(struct crypto_ahash *tfm); @@ -200,6 +206,8 @@ struct shash_desc { * @digest: see struct ahash_alg * @export: see struct ahash_alg * @import: see struct ahash_alg + * @export_core: see struct ahash_alg + * @import_core: see struct ahash_alg * @setkey: see struct ahash_alg * @init_tfm: Initialize the cryptographic transformation object. * This function is called only once at the instantiation @@ -230,6 +238,8 @@ struct shash_alg { unsigned int len, u8 *out); int (*export)(struct shash_desc *desc, void *out); int (*import)(struct shash_desc *desc, const void *in); + int (*export_core)(struct shash_desc *desc, void *out); + int (*import_core)(struct shash_desc *desc, const void *in); int (*setkey)(struct crypto_shash *tfm, const u8 *key, unsigned int keylen); int (*init_tfm)(struct crypto_shash *tfm); diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h index ef5ea75ac5c8..e9de2bc34a10 100644 --- a/include/crypto/internal/hash.h +++ b/include/crypto/internal/hash.h @@ -20,6 +20,9 @@ /* Set this bit if finup can deal with multiple blocks. */ #define CRYPTO_AHASH_ALG_FINUP_MAX 0x04000000 +/* This bit is set by the Crypto API if export_core is not supported. */ +#define CRYPTO_AHASH_ALG_NO_EXPORT_CORE 0x08000000 + #define HASH_FBREQ_ON_STACK(name, req) \ char __##name##_req[sizeof(struct ahash_request) + \ MAX_SYNC_HASH_REQSIZE] CRYPTO_MINALIGN_ATTR; \ |