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authorShirish Pargaonkar <shirishpargaonkar@gmail.com>2011-01-27 09:58:04 -0600
committerSteve French <sfrench@us.ibm.com>2011-01-27 19:58:13 +0000
commitee2c9258501f83d3ed0fd09ce5df1cec53312cf0 (patch)
tree2690ab3e75343be23a4969846a0c71f0df842dc7 /fs/cifs/md4.c
parentd39454ffe4a3c85428483b8a8a8e5e797b6363d5 (diff)
downloadop-kernel-dev-ee2c9258501f83d3ed0fd09ce5df1cec53312cf0.zip
op-kernel-dev-ee2c9258501f83d3ed0fd09ce5df1cec53312cf0.tar.gz
cifs: More crypto cleanup (try #2)
Replaced md4 hashing function local to cifs module with kernel crypto APIs. As a result, md4 hashing function and its supporting functions in file md4.c are not needed anymore. Cleaned up function declarations, removed forward function declarations, and removed a header file that is being deleted from being included. Verified that sec=ntlm/i, sec=ntlmv2/i, and sec=ntlmssp/i work correctly. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/md4.c')
-rw-r--r--fs/cifs/md4.c205
1 files changed, 0 insertions, 205 deletions
diff --git a/fs/cifs/md4.c b/fs/cifs/md4.c
deleted file mode 100644
index a725c26..0000000
--- a/fs/cifs/md4.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
- a implementation of MD4 designed for use in the SMB authentication protocol
- Copyright (C) Andrew Tridgell 1997-1998.
- Modified by Steve French (sfrench@us.ibm.com) 2002-2003
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-#include <linux/module.h>
-#include <linux/fs.h>
-#include "cifsencrypt.h"
-
-/* NOTE: This code makes no attempt to be fast! */
-
-static __u32
-F(__u32 X, __u32 Y, __u32 Z)
-{
- return (X & Y) | ((~X) & Z);
-}
-
-static __u32
-G(__u32 X, __u32 Y, __u32 Z)
-{
- return (X & Y) | (X & Z) | (Y & Z);
-}
-
-static __u32
-H(__u32 X, __u32 Y, __u32 Z)
-{
- return X ^ Y ^ Z;
-}
-
-static __u32
-lshift(__u32 x, int s)
-{
- x &= 0xFFFFFFFF;
- return ((x << s) & 0xFFFFFFFF) | (x >> (32 - s));
-}
-
-#define ROUND1(a,b,c,d,k,s) (*a) = lshift((*a) + F(*b,*c,*d) + X[k], s)
-#define ROUND2(a,b,c,d,k,s) (*a) = lshift((*a) + G(*b,*c,*d) + X[k] + (__u32)0x5A827999,s)
-#define ROUND3(a,b,c,d,k,s) (*a) = lshift((*a) + H(*b,*c,*d) + X[k] + (__u32)0x6ED9EBA1,s)
-
-/* this applies md4 to 64 byte chunks */
-static void
-mdfour64(__u32 *M, __u32 *A, __u32 *B, __u32 *C, __u32 *D)
-{
- int j;
- __u32 AA, BB, CC, DD;
- __u32 X[16];
-
-
- for (j = 0; j < 16; j++)
- X[j] = M[j];
-
- AA = *A;
- BB = *B;
- CC = *C;
- DD = *D;
-
- ROUND1(A, B, C, D, 0, 3);
- ROUND1(D, A, B, C, 1, 7);
- ROUND1(C, D, A, B, 2, 11);
- ROUND1(B, C, D, A, 3, 19);
- ROUND1(A, B, C, D, 4, 3);
- ROUND1(D, A, B, C, 5, 7);
- ROUND1(C, D, A, B, 6, 11);
- ROUND1(B, C, D, A, 7, 19);
- ROUND1(A, B, C, D, 8, 3);
- ROUND1(D, A, B, C, 9, 7);
- ROUND1(C, D, A, B, 10, 11);
- ROUND1(B, C, D, A, 11, 19);
- ROUND1(A, B, C, D, 12, 3);
- ROUND1(D, A, B, C, 13, 7);
- ROUND1(C, D, A, B, 14, 11);
- ROUND1(B, C, D, A, 15, 19);
-
- ROUND2(A, B, C, D, 0, 3);
- ROUND2(D, A, B, C, 4, 5);
- ROUND2(C, D, A, B, 8, 9);
- ROUND2(B, C, D, A, 12, 13);
- ROUND2(A, B, C, D, 1, 3);
- ROUND2(D, A, B, C, 5, 5);
- ROUND2(C, D, A, B, 9, 9);
- ROUND2(B, C, D, A, 13, 13);
- ROUND2(A, B, C, D, 2, 3);
- ROUND2(D, A, B, C, 6, 5);
- ROUND2(C, D, A, B, 10, 9);
- ROUND2(B, C, D, A, 14, 13);
- ROUND2(A, B, C, D, 3, 3);
- ROUND2(D, A, B, C, 7, 5);
- ROUND2(C, D, A, B, 11, 9);
- ROUND2(B, C, D, A, 15, 13);
-
- ROUND3(A, B, C, D, 0, 3);
- ROUND3(D, A, B, C, 8, 9);
- ROUND3(C, D, A, B, 4, 11);
- ROUND3(B, C, D, A, 12, 15);
- ROUND3(A, B, C, D, 2, 3);
- ROUND3(D, A, B, C, 10, 9);
- ROUND3(C, D, A, B, 6, 11);
- ROUND3(B, C, D, A, 14, 15);
- ROUND3(A, B, C, D, 1, 3);
- ROUND3(D, A, B, C, 9, 9);
- ROUND3(C, D, A, B, 5, 11);
- ROUND3(B, C, D, A, 13, 15);
- ROUND3(A, B, C, D, 3, 3);
- ROUND3(D, A, B, C, 11, 9);
- ROUND3(C, D, A, B, 7, 11);
- ROUND3(B, C, D, A, 15, 15);
-
- *A += AA;
- *B += BB;
- *C += CC;
- *D += DD;
-
- *A &= 0xFFFFFFFF;
- *B &= 0xFFFFFFFF;
- *C &= 0xFFFFFFFF;
- *D &= 0xFFFFFFFF;
-
- for (j = 0; j < 16; j++)
- X[j] = 0;
-}
-
-static void
-copy64(__u32 *M, unsigned char *in)
-{
- int i;
-
- for (i = 0; i < 16; i++)
- M[i] = (in[i * 4 + 3] << 24) | (in[i * 4 + 2] << 16) |
- (in[i * 4 + 1] << 8) | (in[i * 4 + 0] << 0);
-}
-
-static void
-copy4(unsigned char *out, __u32 x)
-{
- out[0] = x & 0xFF;
- out[1] = (x >> 8) & 0xFF;
- out[2] = (x >> 16) & 0xFF;
- out[3] = (x >> 24) & 0xFF;
-}
-
-/* produce a md4 message digest from data of length n bytes */
-void
-mdfour(unsigned char *out, unsigned char *in, int n)
-{
- unsigned char buf[128];
- __u32 M[16];
- __u32 b = n * 8;
- int i;
- __u32 A = 0x67452301;
- __u32 B = 0xefcdab89;
- __u32 C = 0x98badcfe;
- __u32 D = 0x10325476;
-
- while (n > 64) {
- copy64(M, in);
- mdfour64(M, &A, &B, &C, &D);
- in += 64;
- n -= 64;
- }
-
- for (i = 0; i < 128; i++)
- buf[i] = 0;
- memcpy(buf, in, n);
- buf[n] = 0x80;
-
- if (n <= 55) {
- copy4(buf + 56, b);
- copy64(M, buf);
- mdfour64(M, &A, &B, &C, &D);
- } else {
- copy4(buf + 120, b);
- copy64(M, buf);
- mdfour64(M, &A, &B, &C, &D);
- copy64(M, buf + 64);
- mdfour64(M, &A, &B, &C, &D);
- }
-
- for (i = 0; i < 128; i++)
- buf[i] = 0;
- copy64(M, buf);
-
- copy4(out, A);
- copy4(out + 4, B);
- copy4(out + 8, C);
- copy4(out + 12, D);
-
- A = B = C = D = 0;
-}
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