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authorShirish Pargaonkar <shirishpargaonkar@gmail.com>2010-10-21 15:42:55 +0400
committerSteve French <sfrench@us.ibm.com>2010-10-26 22:20:10 +0400
commit21e733930be6458e0c33482b6783e7c15ba984eb (patch)
tree1458ccf45529649267451a7e06fcd25d9c7ab0ac /fs/cifs/cifspdu.h
parent6573e9b73e19c0f6b9dfa2b399267ea0f42d6c6b (diff)
downloadlinux-21e733930be6458e0c33482b6783e7c15ba984eb.tar.xz
NTLM auth and sign - Allocate session key/client response dynamically
Start calculating auth response within a session. Move/Add pertinet data structures like session key, server challenge and ntlmv2_hash in a session structure. We should do the calculations within a session before copying session key and response over to server data structures because a session setup can fail. Only after a very first smb session succeeds, it copy/make its session key, session key of smb connection. This key stays with the smb connection throughout its life. sequence_number within server is set to 0x2. The authentication Message Authentication Key (mak) which consists of session key followed by client response within structure session_key is now dynamic. Every authentication type allocates the key + response sized memory within its session structure and later either assigns or frees it once the client response is sent and if session's session key becomes connetion's session key. ntlm/ntlmi authentication functions are rearranged. A function named setup_ntlm_resp(), similar to setup_ntlmv2_resp(), replaces function cifs_calculate_session_key(). size of CIFS_SESS_KEY_SIZE is changed to 16, to reflect the byte size of the key it holds. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifspdu.h')
-rw-r--r--fs/cifs/cifspdu.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index b0f4b5656d4c..a152cd6db99b 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -131,9 +131,14 @@
#define CIFS_CRYPTO_KEY_SIZE (8)
/*
+ * Size of the ntlm client response
+ */
+#define CIFS_AUTH_RESP_SIZE (24)
+
+/*
* Size of the session key (crypto key encrypted with the password
*/
-#define CIFS_SESS_KEY_SIZE (24)
+#define CIFS_SESS_KEY_SIZE (16)
/*
* Maximum user name length