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CIFS: Enable signing in SMB2

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Use hmac-sha256 and rather than hmac-md5 that is used for CIFS/SMB.

Signature field in SMB2 header is 16 bytes instead of 8 bytes.

Automatically enable signing by client when requested by the server
when signing ability is available to the client.

Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky
2012-09-18 16:20:30 -07:00
committed by Steve French
parent 009d344398
commit 3c1bf7e48e
9 changed files with 253 additions and 28 deletions
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2
fs/cifs/smb2proto.h
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@@ -39,6 +39,8 @@ extern char *smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr);
extern __le16 *cifs_convert_path_to_utf16(const char *from,
struct cifs_sb_info *cifs_sb);
extern int smb2_verify_signature2(struct kvec *, unsigned int,
struct TCP_Server_Info *);
extern int smb2_check_receive(struct mid_q_entry *mid,
struct TCP_Server_Info *server, bool log_error);
extern int smb2_setup_request(struct cifs_ses *ses, struct kvec *iov,