As the size of an skcipher_request is variable, it's awkward to
zero it explicitly. This patch adds a helper to do that which
should be used when it is created on the stack.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index 2f07b4f..905490c 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -445,6 +451,13 @@ static inline void skcipher_request_free(struct skcipher_request *req)
kzfree(req);
}
+static inline void skcipher_request_zero(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+
+ memzero_explicit(req, sizeof(*req) + crypto_skcipher_reqsize(tfm));
+}
+
/**
* skcipher_request_set_callback() - set asynchronous callback function
* @req: request handle
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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