aboutsummaryrefslogtreecommitdiffstats
path: root/modules/alg_ia32/md4core.S
blob: ddc5c261469dc6f4b12b892470caa94ff84abec7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/*************************************************
* MD4 Source File                                *
* (C) 1999-2006 The Botan Project                *
*************************************************/

#include <botan/asm_macr.h>

START_LISTING(md4core.S)

START_FUNCTION(md4_core)
   SPILL_REGS()

#define PUSHED 4

   ASSIGN(EBP, ARG(2)) /* input block */
   ASSIGN(EDI, ARG(3)) /* expanded words */

   ZEROIZE(ESI)

START_LOOP(.LOAD_INPUT)
   ADD_IMM(ESI, 4)

   ASSIGN(EAX, ARRAY4(EBP, 0))
   ASSIGN(EBX, ARRAY4(EBP, 1))
   ASSIGN(ECX, ARRAY4(EBP, 2))
   ASSIGN(EDX, ARRAY4(EBP, 3))

   ADD_IMM(EBP, 16)

   ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-4), EAX)
   ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-3), EBX)
   ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-2), ECX)
   ASSIGN(ARRAY4_INDIRECT(EDI,ESI,-1), EDX)
LOOP_UNTIL_EQ(ESI, 16, .LOAD_INPUT)

   ASSIGN(EBP, ARG(1))
   ASSIGN(EAX, ARRAY4(EBP, 0))
   ASSIGN(EBX, ARRAY4(EBP, 1))
   ASSIGN(ECX, ARRAY4(EBP, 2))
   ASSIGN(EDX, ARRAY4(EBP, 3))

#define MSG EDI
#define T1 ESI
#define T2 EBP

#define FF(A, B, C, D, N, S)          \
   ASSIGN(T1, ARRAY4(MSG, N))       ; \
   ASSIGN(T2, C)                    ; \
   XOR(T2, D)                       ; \
   AND(T2, B)                       ; \
   XOR(T2, D)                       ; \
   ADD(A, T1)                       ; \
   ADD(A, T2)                       ; \
   ROTL_IMM(A, S)                   ;

#define GG(A, B, C, D, N, S)          \
   ASSIGN(T1, ARRAY4(MSG, N))       ; \
   ASSIGN(T2, B)                    ; \
   OR(T2, C)                        ; \
   AND(T2, D)                       ; \
   ADD3_IMM(A, T1, 0x5A827999)      ; \
   ASSIGN(T1, B)                    ; \
   AND(T1, C)                       ; \
   OR(T2, T1)                       ; \
   ADD(A, T2)                       ; \
   ROTL_IMM(A, S)                   ;

#define HH(A, B, C, D, N, S)          \
   ASSIGN(T1, ARRAY4(MSG, N))       ; \
   ASSIGN(T2, B)                    ; \
   XOR(T2, C)                       ; \
   XOR(T2, D)                       ; \
   ADD3_IMM(A, T1, 0x6ED9EBA1)      ; \
   ADD(A, T2)                       ; \
   ROTL_IMM(A, S)                   ;

   FF(EAX,EBX,ECX,EDX, 0, 3);
   FF(EDX,EAX,EBX,ECX, 1, 7);
   FF(ECX,EDX,EAX,EBX, 2,11);
   FF(EBX,ECX,EDX,EAX, 3,19);
   FF(EAX,EBX,ECX,EDX, 4, 3);
   FF(EDX,EAX,EBX,ECX, 5, 7);
   FF(ECX,EDX,EAX,EBX, 6,11);
   FF(EBX,ECX,EDX,EAX, 7,19);
   FF(EAX,EBX,ECX,EDX, 8, 3);
   FF(EDX,EAX,EBX,ECX, 9, 7);
   FF(ECX,EDX,EAX,EBX,10,11);
   FF(EBX,ECX,EDX,EAX,11,19);
   FF(EAX,EBX,ECX,EDX,12, 3);
   FF(EDX,EAX,EBX,ECX,13, 7);
   FF(ECX,EDX,EAX,EBX,14,11);
   FF(EBX,ECX,EDX,EAX,15,19);

   GG(EAX,EBX,ECX,EDX, 0, 3);
   GG(EDX,EAX,EBX,ECX, 4, 5);
   GG(ECX,EDX,EAX,EBX, 8, 9);
   GG(EBX,ECX,EDX,EAX,12,13);
   GG(EAX,EBX,ECX,EDX, 1, 3);
   GG(EDX,EAX,EBX,ECX, 5, 5);
   GG(ECX,EDX,EAX,EBX, 9, 9);
   GG(EBX,ECX,EDX,EAX,13,13);
   GG(EAX,EBX,ECX,EDX, 2, 3);
   GG(EDX,EAX,EBX,ECX, 6, 5);
   GG(ECX,EDX,EAX,EBX,10, 9);
   GG(EBX,ECX,EDX,EAX,14,13);
   GG(EAX,EBX,ECX,EDX, 3, 3);
   GG(EDX,EAX,EBX,ECX, 7, 5);
   GG(ECX,EDX,EAX,EBX,11, 9);
   GG(EBX,ECX,EDX,EAX,15,13);

   HH(EAX,EBX,ECX,EDX, 0, 3);
   HH(EDX,EAX,EBX,ECX, 8, 9);
   HH(ECX,EDX,EAX,EBX, 4,11);
   HH(EBX,ECX,EDX,EAX,12,15);
   HH(EAX,EBX,ECX,EDX, 2, 3);
   HH(EDX,EAX,EBX,ECX,10, 9);
   HH(ECX,EDX,EAX,EBX, 6,11);
   HH(EBX,ECX,EDX,EAX,14,15);
   HH(EAX,EBX,ECX,EDX, 1, 3);
   HH(EDX,EAX,EBX,ECX, 9, 9);
   HH(ECX,EDX,EAX,EBX, 5,11);
   HH(EBX,ECX,EDX,EAX,13,15);
   HH(EAX,EBX,ECX,EDX, 3, 3);
   HH(EDX,EAX,EBX,ECX,11, 9);
   HH(ECX,EDX,EAX,EBX, 7,11);
   HH(EBX,ECX,EDX,EAX,15,15);

   ASSIGN(EBP, ARG(1))
   ADD(ARRAY4(EBP, 0), EAX)
   ADD(ARRAY4(EBP, 1), EBX)
   ADD(ARRAY4(EBP, 2), ECX)
   ADD(ARRAY4(EBP, 3), EDX)

   RESTORE_REGS()
END_FUNCTION(md4_core)