Analogous to crypto_grab_skcipher() and crypto_spawn_skcipher_alg(),
these are useful for algorithms that need to use a shash sub-algorithm,
possibly in addition to other sub-algorithms.
Signed-off-by: Alex Cope <alexcope@xxxxxxxxxx>
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
crypto/shash.c | 8 ++++++++
include/crypto/internal/hash.h | 8 ++++++++
2 files changed, 16 insertions(+)
diff --git a/crypto/shash.c b/crypto/shash.c
index a051541..55a5535 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -536,6 +536,14 @@ void shash_free_instance(struct crypto_instance *inst)
}
EXPORT_SYMBOL_GPL(shash_free_instance);
+int crypto_grab_shash(struct crypto_shash_spawn *spawn,
+ const char *name, u32 type, u32 mask)
+{
+ spawn->base.frontend = &crypto_shash_type;
+ return crypto_grab_spawn(&spawn->base, name, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_grab_shash);
+
int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
struct shash_alg *alg,
struct crypto_instance *inst)
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 1d4f365..54e4425 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -99,6 +99,8 @@ int shash_register_instance(struct crypto_template *tmpl,
struct shash_instance *inst);
void shash_free_instance(struct crypto_instance *inst);
+int crypto_grab_shash(struct crypto_shash_spawn *spawn,
+ const char *name, u32 type, u32 mask);
int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
struct shash_alg *alg,
struct crypto_instance *inst);
@@ -108,6 +110,12 @@ static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
crypto_drop_spawn(&spawn->base);
}
+static inline struct shash_alg *crypto_spawn_shash_alg(
+ struct crypto_shash_spawn *spawn)
+{
+ return container_of(spawn->base.alg, struct shash_alg, base);
+}
+
struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
--
2.8.0.rc3.226.g39d4020
--
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