summaryrefslogtreecommitdiffstats
path: root/include/crypto/akcipher.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/crypto/akcipher.h')
-rw-r--r--include/crypto/akcipher.h11
1 files changed, 6 insertions, 5 deletions
diff --git a/include/crypto/akcipher.h b/include/crypto/akcipher.h
index c37cc59e9bf2..b5e11de4d497 100644
--- a/include/crypto/akcipher.h
+++ b/include/crypto/akcipher.h
@@ -98,7 +98,7 @@ struct akcipher_alg {
unsigned int keylen);
int (*set_priv_key)(struct crypto_akcipher *tfm, const void *key,
unsigned int keylen);
- int (*max_size)(struct crypto_akcipher *tfm);
+ unsigned int (*max_size)(struct crypto_akcipher *tfm);
int (*init)(struct crypto_akcipher *tfm);
void (*exit)(struct crypto_akcipher *tfm);
@@ -257,13 +257,14 @@ static inline void akcipher_request_set_crypt(struct akcipher_request *req,
/**
* crypto_akcipher_maxsize() - Get len for output buffer
*
- * Function returns the dest buffer size required for a given key
+ * Function returns the dest buffer size required for a given key.
+ * Function assumes that the key is already set in the transformation. If this
+ * function is called without a setkey or with a failed setkey, you will end up
+ * in a NULL dereference.
*
* @tfm: AKCIPHER tfm handle allocated with crypto_alloc_akcipher()
- *
- * Return: minimum len for output buffer or error code in key hasn't been set
*/
-static inline int crypto_akcipher_maxsize(struct crypto_akcipher *tfm)
+static inline unsigned int crypto_akcipher_maxsize(struct crypto_akcipher *tfm)
{
struct akcipher_alg *alg = crypto_akcipher_alg(tfm);