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authorSteve French <smfrench@gmail.com>2013-06-27 08:45:05 +0400
committerSteve French <smfrench@gmail.com>2013-06-27 08:45:05 +0400
commit429b46f4fdaf9c9007b7c0fc371b94e40c3764b2 (patch)
tree7643a60439f4e81159e6327539a0983270e38331 /fs/cifs/cifspdu.h
parentf87ab88b4065a9ef00620224c4fafadc201a430c (diff)
downloadlinux-429b46f4fdaf9c9007b7c0fc371b94e40c3764b2.tar.xz
[CIFS] SMB3 Signing enablement
SMB3 uses a much faster method of signing (which is also better in other ways), AES-CMAC. With the kernel now supporting AES-CMAC since last release, we are overdue to allow SMB3 signing (today only CIFS and SMB2 and SMB2.1, but not SMB3 and SMB3.1 can sign) - and we need this also for checking secure negotation and also per-share encryption (two other new SMB3 features which we need to implement). This patch needs some work in a few areas - for example we need to move signing for SMB2/SMB3 from per-socket to per-user (we may be able to use the "nosharesock" mount option in the interim for the multiuser case), and Shirish found a bug in the earlier authentication overhaul (setting signing flags properly) - but those can be done in followon patches. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/cifspdu.h')
-rw-r--r--fs/cifs/cifspdu.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 7e8523c5c18e..11ca24a8e054 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -142,6 +142,11 @@
*/
#define CIFS_SESS_KEY_SIZE (16)
+/*
+ * Size of the smb3 signing key
+ */
+#define SMB3_SIGN_KEY_SIZE (16)
+
#define CIFS_CLIENT_CHALLENGE_SIZE (8)
#define CIFS_SERVER_CHALLENGE_SIZE (8)
#define CIFS_HMAC_MD5_HASH_SIZE (16)