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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-22 23:21:10 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-25 22:42:12 +0800 |
| commit | 1aaa753d918c48c603195a468766e6a2b32b87f9 (patch) | |
| tree | 5e5a893be728bd981bc3019308c6318f4d61915d | |
| parent | e67ffe0af4d450e95e5f9bb7d081500e30777857 (diff) | |
| download | linux-1aaa753d918c48c603195a468766e6a2b32b87f9.tar.gz linux-1aaa753d918c48c603195a468766e6a2b32b87f9.tar.bz2 linux-1aaa753d918c48c603195a468766e6a2b32b87f9.zip | |
crypto: skcipher - Add helper to zero stack request
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@gondor.apana.org.au>
| -rw-r--r-- | include/crypto/skcipher.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h index 2f07b4fce3e0..f7a03a17bc1d 100644 --- a/include/crypto/skcipher.h +++ b/include/crypto/skcipher.h @@ -445,6 +445,13 @@ 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 |