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Diffstat (limited to 'fs/cifs/md4.c')
-rw-r--r-- | fs/cifs/md4.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/fs/cifs/md4.c b/fs/cifs/md4.c deleted file mode 100644 index a725c2609d67..000000000000 --- a/fs/cifs/md4.c +++ /dev/null | |||
@@ -1,205 +0,0 @@ | |||
1 | /* | ||
2 | Unix SMB/Netbios implementation. | ||
3 | Version 1.9. | ||
4 | a implementation of MD4 designed for use in the SMB authentication protocol | ||
5 | Copyright (C) Andrew Tridgell 1997-1998. | ||
6 | Modified by Steve French (sfrench@us.ibm.com) 2002-2003 | ||
7 | |||
8 | This program is free software; you can redistribute it and/or modify | ||
9 | it under the terms of the GNU General Public License as published by | ||
10 | the Free Software Foundation; either version 2 of the License, or | ||
11 | (at your option) any later version. | ||
12 | |||
13 | This program is distributed in the hope that it will be useful, | ||
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 | GNU General Public License for more details. | ||
17 | |||
18 | You should have received a copy of the GNU General Public License | ||
19 | along with this program; if not, write to the Free Software | ||
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
21 | */ | ||
22 | #include <linux/module.h> | ||
23 | #include <linux/fs.h> | ||
24 | #include "cifsencrypt.h" | ||
25 | |||
26 | /* NOTE: This code makes no attempt to be fast! */ | ||
27 | |||
28 | static __u32 | ||
29 | F(__u32 X, __u32 Y, __u32 Z) | ||
30 | { | ||
31 | return (X & Y) | ((~X) & Z); | ||
32 | } | ||
33 | |||
34 | static __u32 | ||
35 | G(__u32 X, __u32 Y, __u32 Z) | ||
36 | { | ||
37 | return (X & Y) | (X & Z) | (Y & Z); | ||
38 | } | ||
39 | |||
40 | static __u32 | ||
41 | H(__u32 X, __u32 Y, __u32 Z) | ||
42 | { | ||
43 | return X ^ Y ^ Z; | ||
44 | } | ||
45 | |||
46 | static __u32 | ||
47 | lshift(__u32 x, int s) | ||
48 | { | ||
49 | x &= 0xFFFFFFFF; | ||
50 | return ((x << s) & 0xFFFFFFFF) | (x >> (32 - s)); | ||
51 | } | ||
52 | |||
53 | #define ROUND1(a,b,c,d,k,s) (*a) = lshift((*a) + F(*b,*c,*d) + X[k], s) | ||
54 | #define ROUND2(a,b,c,d,k,s) (*a) = lshift((*a) + G(*b,*c,*d) + X[k] + (__u32)0x5A827999,s) | ||
55 | #define ROUND3(a,b,c,d,k,s) (*a) = lshift((*a) + H(*b,*c,*d) + X[k] + (__u32)0x6ED9EBA1,s) | ||
56 | |||
57 | /* this applies md4 to 64 byte chunks */ | ||
58 | static void | ||
59 | mdfour64(__u32 *M, __u32 *A, __u32 *B, __u32 *C, __u32 *D) | ||
60 | { | ||
61 | int j; | ||
62 | __u32 AA, BB, CC, DD; | ||
63 | __u32 X[16]; | ||
64 | |||
65 | |||
66 | for (j = 0; j < 16; j++) | ||
67 | X[j] = M[j]; | ||
68 | |||
69 | AA = *A; | ||
70 | BB = *B; | ||
71 | CC = *C; | ||
72 | DD = *D; | ||
73 | |||
74 | ROUND1(A, B, C, D, 0, 3); | ||
75 | ROUND1(D, A, B, C, 1, 7); | ||
76 | ROUND1(C, D, A, B, 2, 11); | ||
77 | ROUND1(B, C, D, A, 3, 19); | ||
78 | ROUND1(A, B, C, D, 4, 3); | ||
79 | ROUND1(D, A, B, C, 5, 7); | ||
80 | ROUND1(C, D, A, B, 6, 11); | ||
81 | ROUND1(B, C, D, A, 7, 19); | ||
82 | ROUND1(A, B, C, D, 8, 3); | ||
83 | ROUND1(D, A, B, C, 9, 7); | ||
84 | ROUND1(C, D, A, B, 10, 11); | ||
85 | ROUND1(B, C, D, A, 11, 19); | ||
86 | ROUND1(A, B, C, D, 12, 3); | ||
87 | ROUND1(D, A, B, C, 13, 7); | ||
88 | ROUND1(C, D, A, B, 14, 11); | ||
89 | ROUND1(B, C, D, A, 15, 19); | ||
90 | |||
91 | ROUND2(A, B, C, D, 0, 3); | ||
92 | ROUND2(D, A, B, C, 4, 5); | ||
93 | ROUND2(C, D, A, B, 8, 9); | ||
94 | ROUND2(B, C, D, A, 12, 13); | ||
95 | ROUND2(A, B, C, D, 1, 3); | ||
96 | ROUND2(D, A, B, C, 5, 5); | ||
97 | ROUND2(C, D, A, B, 9, 9); | ||
98 | ROUND2(B, C, D, A, 13, 13); | ||
99 | ROUND2(A, B, C, D, 2, 3); | ||
100 | ROUND2(D, A, B, C, 6, 5); | ||
101 | ROUND2(C, D, A, B, 10, 9); | ||
102 | ROUND2(B, C, D, A, 14, 13); | ||
103 | ROUND2(A, B, C, D, 3, 3); | ||
104 | ROUND2(D, A, B, C, 7, 5); | ||
105 | ROUND2(C, D, A, B, 11, 9); | ||
106 | ROUND2(B, C, D, A, 15, 13); | ||
107 | |||
108 | ROUND3(A, B, C, D, 0, 3); | ||
109 | ROUND3(D, A, B, C, 8, 9); | ||
110 | ROUND3(C, D, A, B, 4, 11); | ||
111 | ROUND3(B, C, D, A, 12, 15); | ||
112 | ROUND3(A, B, C, D, 2, 3); | ||
113 | ROUND3(D, A, B, C, 10, 9); | ||
114 | ROUND3(C, D, A, B, 6, 11); | ||
115 | ROUND3(B, C, D, A, 14, 15); | ||
116 | ROUND3(A, B, C, D, 1, 3); | ||
117 | ROUND3(D, A, B, C, 9, 9); | ||
118 | ROUND3(C, D, A, B, 5, 11); | ||
119 | ROUND3(B, C, D, A, 13, 15); | ||
120 | ROUND3(A, B, C, D, 3, 3); | ||
121 | ROUND3(D, A, B, C, 11, 9); | ||
122 | ROUND3(C, D, A, B, 7, 11); | ||
123 | ROUND3(B, C, D, A, 15, 15); | ||
124 | |||
125 | *A += AA; | ||
126 | *B += BB; | ||
127 | *C += CC; | ||
128 | *D += DD; | ||
129 | |||
130 | *A &= 0xFFFFFFFF; | ||
131 | *B &= 0xFFFFFFFF; | ||
132 | *C &= 0xFFFFFFFF; | ||
133 | *D &= 0xFFFFFFFF; | ||
134 | |||
135 | for (j = 0; j < 16; j++) | ||
136 | X[j] = 0; | ||
137 | } | ||
138 | |||
139 | static void | ||
140 | copy64(__u32 *M, unsigned char *in) | ||
141 | { | ||
142 | int i; | ||
143 | |||
144 | for (i = 0; i < 16; i++) | ||
145 | M[i] = (in[i * 4 + 3] << 24) | (in[i * 4 + 2] << 16) | | ||
146 | (in[i * 4 + 1] << 8) | (in[i * 4 + 0] << 0); | ||
147 | } | ||
148 | |||
149 | static void | ||
150 | copy4(unsigned char *out, __u32 x) | ||
151 | { | ||
152 | out[0] = x & 0xFF; | ||
153 | out[1] = (x >> 8) & 0xFF; | ||
154 | out[2] = (x >> 16) & 0xFF; | ||
155 | out[3] = (x >> 24) & 0xFF; | ||
156 | } | ||
157 | |||
158 | /* produce a md4 message digest from data of length n bytes */ | ||
159 | void | ||
160 | mdfour(unsigned char *out, unsigned char *in, int n) | ||
161 | { | ||
162 | unsigned char buf[128]; | ||
163 | __u32 M[16]; | ||
164 | __u32 b = n * 8; | ||
165 | int i; | ||
166 | __u32 A = 0x67452301; | ||
167 | __u32 B = 0xefcdab89; | ||
168 | __u32 C = 0x98badcfe; | ||
169 | __u32 D = 0x10325476; | ||
170 | |||
171 | while (n > 64) { | ||
172 | copy64(M, in); | ||
173 | mdfour64(M, &A, &B, &C, &D); | ||
174 | in += 64; | ||
175 | n -= 64; | ||
176 | } | ||
177 | |||
178 | for (i = 0; i < 128; i++) | ||
179 | buf[i] = 0; | ||
180 | memcpy(buf, in, n); | ||
181 | buf[n] = 0x80; | ||
182 | |||
183 | if (n <= 55) { | ||
184 | copy4(buf + 56, b); | ||
185 | copy64(M, buf); | ||
186 | mdfour64(M, &A, &B, &C, &D); | ||
187 | } else { | ||
188 | copy4(buf + 120, b); | ||
189 | copy64(M, buf); | ||
190 | mdfour64(M, &A, &B, &C, &D); | ||
191 | copy64(M, buf + 64); | ||
192 | mdfour64(M, &A, &B, &C, &D); | ||
193 | } | ||
194 | |||
195 | for (i = 0; i < 128; i++) | ||
196 | buf[i] = 0; | ||
197 | copy64(M, buf); | ||
198 | |||
199 | copy4(out, A); | ||
200 | copy4(out + 4, B); | ||
201 | copy4(out + 8, C); | ||
202 | copy4(out + 12, D); | ||
203 | |||
204 | A = B = C = D = 0; | ||
205 | } | ||