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KEYS: Use memzero_explicit() for secret data

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I don't think GCC has figured out how to optimize the memset() away, but
they might eventually so let's future proof this code a bit.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
This commit is contained in:
Dan Carpenter 2017-02-09 17:18:00 +00:00 committed by James Morris
parent 57cb17e764
commit 5217660379
1 changed files with 1 additions and 1 deletions
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security/keys/encrypted-keys/encrypted.c
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@ -985,7 +985,7 @@ static void encrypted_destroy(struct key *key)
if (!epayload)
return;
memset(epayload->decrypted_data, 0, epayload->decrypted_datalen);
memzero_explicit(epayload->decrypted_data, epayload->decrypted_datalen);
kfree(key->payload.data[0]);
}