diff options
author | David S. Miller <davem@davemloft.net> | 2011-08-03 22:45:10 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2011-08-06 21:32:45 -0400 |
commit | bc0b96b54a21246e377122d54569eef71cec535f (patch) | |
tree | b9cb6230c79da4b3a146af7d08c6c26f8d72024c | |
parent | de96355c111679dd6e2c5c73e25e814c72510c58 (diff) |
crypto: Move md5_transform to lib/md5.c
We are going to use this for TCP/IP sequence number and fragment ID
generation.
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | crypto/md5.c | 92 | ||||
-rw-r--r-- | include/linux/cryptohash.h | 5 | ||||
-rw-r--r-- | lib/Makefile | 2 | ||||
-rw-r--r-- | lib/md5.c | 95 |
4 files changed, 102 insertions, 92 deletions
diff --git a/crypto/md5.c b/crypto/md5.c index 30efc7dad891..7febeaab923b 100644 --- a/crypto/md5.c +++ b/crypto/md5.c | |||
@@ -21,99 +21,9 @@ | |||
21 | #include <linux/module.h> | 21 | #include <linux/module.h> |
22 | #include <linux/string.h> | 22 | #include <linux/string.h> |
23 | #include <linux/types.h> | 23 | #include <linux/types.h> |
24 | #include <linux/cryptohash.h> | ||
24 | #include <asm/byteorder.h> | 25 | #include <asm/byteorder.h> |
25 | 26 | ||
26 | #define F1(x, y, z) (z ^ (x & (y ^ z))) | ||
27 | #define F2(x, y, z) F1(z, x, y) | ||
28 | #define F3(x, y, z) (x ^ y ^ z) | ||
29 | #define F4(x, y, z) (y ^ (x | ~z)) | ||
30 | |||
31 | #define MD5STEP(f, w, x, y, z, in, s) \ | ||
32 | (w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x) | ||
33 | |||
34 | static void md5_transform(u32 *hash, u32 const *in) | ||
35 | { | ||
36 | u32 a, b, c, d; | ||
37 | |||
38 | a = hash[0]; | ||
39 | b = hash[1]; | ||
40 | c = hash[2]; | ||
41 | d = hash[3]; | ||
42 | |||
43 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); | ||
44 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); | ||
45 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); | ||
46 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); | ||
47 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); | ||
48 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); | ||
49 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); | ||
50 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); | ||
51 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); | ||
52 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); | ||
53 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); | ||
54 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); | ||
55 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); | ||
56 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); | ||
57 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); | ||
58 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); | ||
59 | |||
60 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); | ||
61 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); | ||
62 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); | ||
63 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); | ||
64 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); | ||
65 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); | ||
66 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); | ||
67 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); | ||
68 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); | ||
69 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); | ||
70 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); | ||
71 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); | ||
72 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); | ||
73 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); | ||
74 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); | ||
75 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); | ||
76 | |||
77 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); | ||
78 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); | ||
79 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); | ||
80 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); | ||
81 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); | ||
82 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); | ||
83 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); | ||
84 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); | ||
85 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); | ||
86 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); | ||
87 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); | ||
88 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); | ||
89 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); | ||
90 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); | ||
91 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); | ||
92 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); | ||
93 | |||
94 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); | ||
95 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); | ||
96 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); | ||
97 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); | ||
98 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); | ||
99 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); | ||
100 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); | ||
101 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); | ||
102 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); | ||
103 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); | ||
104 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); | ||
105 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); | ||
106 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); | ||
107 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); | ||
108 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); | ||
109 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); | ||
110 | |||
111 | hash[0] += a; | ||
112 | hash[1] += b; | ||
113 | hash[2] += c; | ||
114 | hash[3] += d; | ||
115 | } | ||
116 | |||
117 | /* XXX: this stuff can be optimized */ | 27 | /* XXX: this stuff can be optimized */ |
118 | static inline void le32_to_cpu_array(u32 *buf, unsigned int words) | 28 | static inline void le32_to_cpu_array(u32 *buf, unsigned int words) |
119 | { | 29 | { |
diff --git a/include/linux/cryptohash.h b/include/linux/cryptohash.h index ec78a4bbe1d5..d2984fbebbc0 100644 --- a/include/linux/cryptohash.h +++ b/include/linux/cryptohash.h | |||
@@ -8,6 +8,11 @@ | |||
8 | void sha_init(__u32 *buf); | 8 | void sha_init(__u32 *buf); |
9 | void sha_transform(__u32 *digest, const char *data, __u32 *W); | 9 | void sha_transform(__u32 *digest, const char *data, __u32 *W); |
10 | 10 | ||
11 | #define MD5_DIGEST_WORDS 4 | ||
12 | #define MD5_MESSAGE_BYTES 64 | ||
13 | |||
14 | void md5_transform(__u32 *hash, __u32 const *in); | ||
15 | |||
11 | __u32 half_md4_transform(__u32 buf[4], __u32 const in[8]); | 16 | __u32 half_md4_transform(__u32 buf[4], __u32 const in[8]); |
12 | 17 | ||
13 | #endif | 18 | #endif |
diff --git a/lib/Makefile b/lib/Makefile index 6457af4a7caf..d5d175c8a6ca 100644 --- a/lib/Makefile +++ b/lib/Makefile | |||
@@ -10,7 +10,7 @@ endif | |||
10 | lib-y := ctype.o string.o vsprintf.o cmdline.o \ | 10 | lib-y := ctype.o string.o vsprintf.o cmdline.o \ |
11 | rbtree.o radix-tree.o dump_stack.o timerqueue.o\ | 11 | rbtree.o radix-tree.o dump_stack.o timerqueue.o\ |
12 | idr.o int_sqrt.o extable.o prio_tree.o \ | 12 | idr.o int_sqrt.o extable.o prio_tree.o \ |
13 | sha1.o irq_regs.o reciprocal_div.o argv_split.o \ | 13 | sha1.o md5.o irq_regs.o reciprocal_div.o argv_split.o \ |
14 | proportions.o prio_heap.o ratelimit.o show_mem.o \ | 14 | proportions.o prio_heap.o ratelimit.o show_mem.o \ |
15 | is_single_threaded.o plist.o decompress.o find_next_bit.o | 15 | is_single_threaded.o plist.o decompress.o find_next_bit.o |
16 | 16 | ||
diff --git a/lib/md5.c b/lib/md5.c new file mode 100644 index 000000000000..c777180e1f2f --- /dev/null +++ b/lib/md5.c | |||
@@ -0,0 +1,95 @@ | |||
1 | #include <linux/kernel.h> | ||
2 | #include <linux/module.h> | ||
3 | #include <linux/cryptohash.h> | ||
4 | |||
5 | #define F1(x, y, z) (z ^ (x & (y ^ z))) | ||
6 | #define F2(x, y, z) F1(z, x, y) | ||
7 | #define F3(x, y, z) (x ^ y ^ z) | ||
8 | #define F4(x, y, z) (y ^ (x | ~z)) | ||
9 | |||
10 | #define MD5STEP(f, w, x, y, z, in, s) \ | ||
11 | (w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x) | ||
12 | |||
13 | void md5_transform(__u32 *hash, __u32 const *in) | ||
14 | { | ||
15 | u32 a, b, c, d; | ||
16 | |||
17 | a = hash[0]; | ||
18 | b = hash[1]; | ||
19 | c = hash[2]; | ||
20 | d = hash[3]; | ||
21 | |||
22 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); | ||
23 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); | ||
24 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); | ||
25 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); | ||
26 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); | ||
27 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); | ||
28 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); | ||
29 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); | ||
30 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); | ||
31 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); | ||
32 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); | ||
33 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); | ||
34 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); | ||
35 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); | ||
36 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); | ||
37 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); | ||
38 | |||
39 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); | ||
40 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); | ||
41 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); | ||
42 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); | ||
43 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); | ||
44 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); | ||
45 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); | ||
46 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); | ||
47 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); | ||
48 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); | ||
49 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); | ||
50 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); | ||
51 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); | ||
52 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); | ||
53 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); | ||
54 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); | ||
55 | |||
56 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); | ||
57 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); | ||
58 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); | ||
59 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); | ||
60 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); | ||
61 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); | ||
62 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); | ||
63 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); | ||
64 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); | ||
65 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); | ||
66 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); | ||
67 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); | ||
68 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); | ||
69 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); | ||
70 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); | ||
71 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); | ||
72 | |||
73 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); | ||
74 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); | ||
75 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); | ||
76 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); | ||
77 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); | ||
78 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); | ||
79 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); | ||
80 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); | ||
81 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); | ||
82 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); | ||
83 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); | ||
84 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); | ||
85 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); | ||
86 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); | ||
87 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); | ||
88 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); | ||
89 | |||
90 | hash[0] += a; | ||
91 | hash[1] += b; | ||
92 | hash[2] += c; | ||
93 | hash[3] += d; | ||
94 | } | ||
95 | EXPORT_SYMBOL(md5_transform); | ||