diff options
| 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 /include/crypto/skcipher.h | |
| parent | crypto: hash - Add helpers to zero stack request/descriptor (diff) | |
| download | linux-dev-1aaa753d918c48c603195a468766e6a2b32b87f9.tar.xz linux-dev-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>
Diffstat (limited to 'include/crypto/skcipher.h')
| -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 |