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-rw-r--r--include/crypto/hash.h46
1 files changed, 28 insertions, 18 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 0ed31fd80242..2d1849dffb80 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -71,12 +71,11 @@ struct ahash_request {
/**
* struct ahash_alg - asynchronous message digest definition
- * @init: Initialize the transformation context. Intended only to initialize the
+ * @init: **[mandatory]** Initialize the transformation context. Intended only to initialize the
* state of the HASH transformation at the beginning. This shall fill in
* the internal structures used during the entire duration of the whole
* transformation. No data processing happens at this point.
- * Note: mandatory.
- * @update: Push a chunk of data into the driver for transformation. This
+ * @update: **[mandatory]** Push a chunk of data into the driver for transformation. This
* function actually pushes blocks of data from upper layers into the
* driver, which then passes those to the hardware as seen fit. This
* function must not finalize the HASH transformation by calculating the
@@ -85,20 +84,17 @@ struct ahash_request {
* context, as this function may be called in parallel with the same
* transformation object. Data processing can happen synchronously
* [SHASH] or asynchronously [AHASH] at this point.
- * Note: mandatory.
- * @final: Retrieve result from the driver. This function finalizes the
+ * @final: **[mandatory]** Retrieve result from the driver. This function finalizes the
* transformation and retrieves the resulting hash from the driver and
* pushes it back to upper layers. No data processing happens at this
* point unless hardware requires it to finish the transformation
* (then the data buffered by the device driver is processed).
- * Note: mandatory.
- * @finup: Combination of @update and @final. This function is effectively a
+ * @finup: **[optional]** Combination of @update and @final. This function is effectively a
* combination of @update and @final calls issued in sequence. As some
* hardware cannot do @update and @final separately, this callback was
* added to allow such hardware to be used at least by IPsec. Data
* processing can happen synchronously [SHASH] or asynchronously [AHASH]
* at this point.
- * Note: optional.
* @digest: Combination of @init and @update and @final. This function
* effectively behaves as the entire chain of operations, @init,
* @update and @final issued in sequence. Just like @finup, this was
@@ -210,7 +206,6 @@ struct crypto_ahash {
unsigned int keylen);
unsigned int reqsize;
- bool has_setkey;
struct crypto_tfm base;
};
@@ -410,11 +405,6 @@ static inline void *ahash_request_ctx(struct ahash_request *req)
int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen);
-static inline bool crypto_ahash_has_setkey(struct crypto_ahash *tfm)
-{
- return tfm->has_setkey;
-}
-
/**
* crypto_ahash_finup() - update and finalize message digest
* @req: reference to the ahash_request handle that holds all information
@@ -487,7 +477,12 @@ static inline int crypto_ahash_export(struct ahash_request *req, void *out)
*/
static inline int crypto_ahash_import(struct ahash_request *req, const void *in)
{
- return crypto_ahash_reqtfm(req)->import(req, in);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+
+ if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
+ return -ENOKEY;
+
+ return tfm->import(req, in);
}
/**
@@ -503,7 +498,12 @@ static inline int crypto_ahash_import(struct ahash_request *req, const void *in)
*/
static inline int crypto_ahash_init(struct ahash_request *req)
{
- return crypto_ahash_reqtfm(req)->init(req);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+
+ if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
+ return -ENOKEY;
+
+ return tfm->init(req);
}
/**
@@ -855,7 +855,12 @@ static inline int crypto_shash_export(struct shash_desc *desc, void *out)
*/
static inline int crypto_shash_import(struct shash_desc *desc, const void *in)
{
- return crypto_shash_alg(desc->tfm)->import(desc, in);
+ struct crypto_shash *tfm = desc->tfm;
+
+ if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
+ return -ENOKEY;
+
+ return crypto_shash_alg(tfm)->import(desc, in);
}
/**
@@ -871,7 +876,12 @@ static inline int crypto_shash_import(struct shash_desc *desc, const void *in)
*/
static inline int crypto_shash_init(struct shash_desc *desc)
{
- return crypto_shash_alg(desc->tfm)->init(desc);
+ struct crypto_shash *tfm = desc->tfm;
+
+ if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
+ return -ENOKEY;
+
+ return crypto_shash_alg(tfm)->init(desc);
}
/**