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-rw-r--r--include/crypto/hash.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 6361892ea737..aef819247fe8 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -14,6 +14,7 @@
#define _CRYPTO_HASH_H
#include <linux/crypto.h>
+#include <linux/string.h>
struct crypto_ahash;
@@ -550,6 +551,12 @@ static inline void ahash_request_free(struct ahash_request *req)
kzfree(req);
}
+static inline void ahash_request_zero(struct ahash_request *req)
+{
+ memzero_explicit(req, sizeof(*req) +
+ crypto_ahash_reqsize(crypto_ahash_reqtfm(req)));
+}
+
static inline struct ahash_request *ahash_request_cast(
struct crypto_async_request *req)
{
@@ -872,4 +879,10 @@ int crypto_shash_final(struct shash_desc *desc, u8 *out);
int crypto_shash_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out);
+static inline void shash_desc_zero(struct shash_desc *desc)
+{
+ memzero_explicit(desc,
+ sizeof(*desc) + crypto_shash_descsize(desc->tfm));
+}
+
#endif /* _CRYPTO_HASH_H */