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| author |   Stephan Mueller <smueller@chronox.de> | 2016-05-26 23:38:12 +0200 |
|---|---|---|
| committer |   James Morris <james.l.morris@oracle.com> | 2016-06-03 16:14:34 +1000 |
| commit | 4693fc734d675c5518ea9bd4c9623db45bc37402 (patch) | |
| tree | 54dcf2388f5868c5d5a8ab4faf3b64a8e2fa4f79 /security/keys/internal.h | |
| parent | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm (diff) | |
| download | linux-dev-4693fc734d675c5518ea9bd4c9623db45bc37402.tar.xz linux-dev-4693fc734d675c5518ea9bd4c9623db45bc37402.zip | |
KEYS: Add placeholder for KDF usage with DH
The values computed during Diffie-Hellman key exchange are often used
in combination with key derivation functions to create cryptographic
keys. Add a placeholder for a later implementation to configure a
key derivation function that will transform the Diffie-Hellman
result returned by the KEYCTL_DH_COMPUTE command.
[This patch was stripped down from a patch produced by Mat Martineau that
had a bug in the compat code - so for the moment Stephan's patch simply
requires that the placeholder argument must be NULL]
Original-signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to '')
| -rw-r--r-- | security/keys/internal.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/security/keys/internal.h b/security/keys/internal.h index 8ec7a528365d..a705a7d92ad7 100644 --- a/security/keys/internal.h +++ b/security/keys/internal.h @@ -260,10 +260,11 @@ static inline long keyctl_get_persistent(uid_t uid, key_serial_t destring) #ifdef CONFIG_KEY_DH_OPERATIONS extern long keyctl_dh_compute(struct keyctl_dh_params __user *, char __user *, - size_t); + size_t, void __user *); #else static inline long keyctl_dh_compute(struct keyctl_dh_params __user *params, - char __user *buffer, size_t buflen) + char __user *buffer, size_t buflen, + void __user *reserved) { return -EOPNOTSUPP; } |