miden-crypto/arch/arm64-sve/rpo_hash.h
arch/arm64-sve/rpo_hash.hRaw
1#ifndef RPO_SVE_RPO_HASH_H
2#define RPO_SVE_RPO_HASH_H
3
4#include <arm_sve.h>
5#include <stddef.h>
6#include <stdint.h>
7#include <string.h>
8
9#define COPY(NAME, VIN1, VIN2, SIN3) \
10 svuint64_t NAME ## _1 = VIN1; \
11 svuint64_t NAME ## _2 = VIN2; \
12 uint64_t NAME ## _3[4]; \
13 memcpy(NAME ## _3, SIN3, 4 * sizeof(uint64_t))
14
15#define MULTIPLY(PRED, DEST, OP) \
16 mul(PRED, &DEST ## _1, &OP ## _1, &DEST ## _2, &OP ## _2, DEST ## _3, OP ## _3)
17
18#define SQUARE(PRED, NAME) \
19 sq(PRED, &NAME ## _1, &NAME ## _2, NAME ## _3)
20
21#define SQUARE_DEST(PRED, DEST, SRC) \
22 COPY(DEST, SRC ## _1, SRC ## _2, SRC ## _3); \
23 SQUARE(PRED, DEST);
24
25#define POW_ACC(PRED, NAME, CNT, TAIL) \
26 for (size_t i = 0; i < CNT; i++) { \
27 SQUARE(PRED, NAME); \
28 } \
29 MULTIPLY(PRED, NAME, TAIL);
30
31#define POW_ACC_DEST(PRED, DEST, CNT, HEAD, TAIL) \
32 COPY(DEST, HEAD ## _1, HEAD ## _2, HEAD ## _3); \
33 POW_ACC(PRED, DEST, CNT, TAIL)
34
35extern inline void add_constants(
36 svbool_t pg,
37 svuint64_t *state1,
38 svuint64_t *const1,
39 svuint64_t *state2,
40 svuint64_t *const2,
41 uint64_t *state3,
42 uint64_t *const3
43) {
44 uint64_t Ms = 0xFFFFFFFF00000001ull;
45 svuint64_t Mv = svindex_u64(Ms, 0);
46
47 uint64_t p_1 = Ms - const3[0];
48 uint64_t p_2 = Ms - const3[1];
49 uint64_t p_3 = Ms - const3[2];
50 uint64_t p_4 = Ms - const3[3];
51
52 uint64_t x_1, x_2, x_3, x_4;
53 uint32_t adj_1 = -__builtin_sub_overflow(state3[0], p_1, &x_1);
54 uint32_t adj_2 = -__builtin_sub_overflow(state3[1], p_2, &x_2);
55 uint32_t adj_3 = -__builtin_sub_overflow(state3[2], p_3, &x_3);
56 uint32_t adj_4 = -__builtin_sub_overflow(state3[3], p_4, &x_4);
57
58 state3[0] = x_1 - (uint64_t)adj_1;
59 state3[1] = x_2 - (uint64_t)adj_2;
60 state3[2] = x_3 - (uint64_t)adj_3;
61 state3[3] = x_4 - (uint64_t)adj_4;
62
63 svuint64_t p1 = svsub_x(pg, Mv, *const1);
64 svuint64_t p2 = svsub_x(pg, Mv, *const2);
65
66 svuint64_t x1 = svsub_x(pg, *state1, p1);
67 svuint64_t x2 = svsub_x(pg, *state2, p2);
68
69 svbool_t pt1 = svcmplt_u64(pg, *state1, p1);
70 svbool_t pt2 = svcmplt_u64(pg, *state2, p2);
71
72 *state1 = svsub_m(pt1, x1, (uint32_t)-1);
73 *state2 = svsub_m(pt2, x2, (uint32_t)-1);
74}
75
76extern inline void mul(
77 svbool_t pg,
78 svuint64_t *r1,
79 const svuint64_t *op1,
80 svuint64_t *r2,
81 const svuint64_t *op2,
82 uint64_t *r3,
83 const uint64_t *op3
84) {
85 __uint128_t x_1 = r3[0];
86 __uint128_t x_2 = r3[1];
87 __uint128_t x_3 = r3[2];
88 __uint128_t x_4 = r3[3];
89
90 x_1 *= (__uint128_t) op3[0];
91 x_2 *= (__uint128_t) op3[1];
92 x_3 *= (__uint128_t) op3[2];
93 x_4 *= (__uint128_t) op3[3];
94
95 uint64_t x0_1 = x_1;
96 uint64_t x0_2 = x_2;
97 uint64_t x0_3 = x_3;
98 uint64_t x0_4 = x_4;
99
100 svuint64_t l1 = svmul_x(pg, *r1, *op1);
101 svuint64_t l2 = svmul_x(pg, *r2, *op2);
102
103 uint64_t x1_1 = (x_1 >> 64);
104 uint64_t x1_2 = (x_2 >> 64);
105 uint64_t x1_3 = (x_3 >> 64);
106 uint64_t x1_4 = (x_4 >> 64);
107
108 uint64_t a_1, a_2, a_3, a_4;
109 uint64_t e_1 = __builtin_add_overflow(x0_1, (x0_1 << 32), &a_1);
110 uint64_t e_2 = __builtin_add_overflow(x0_2, (x0_2 << 32), &a_2);
111 uint64_t e_3 = __builtin_add_overflow(x0_3, (x0_3 << 32), &a_3);
112 uint64_t e_4 = __builtin_add_overflow(x0_4, (x0_4 << 32), &a_4);
113
114 svuint64_t ls1 = svlsl_x(pg, l1, 32);
115 svuint64_t ls2 = svlsl_x(pg, l2, 32);
116
117 svuint64_t a1 = svadd_x(pg, l1, ls1);
118 svuint64_t a2 = svadd_x(pg, l2, ls2);
119
120 svbool_t e1 = svcmplt(pg, a1, l1);
121 svbool_t e2 = svcmplt(pg, a2, l2);
122
123 svuint64_t as1 = svlsr_x(pg, a1, 32);
124 svuint64_t as2 = svlsr_x(pg, a2, 32);
125
126 svuint64_t b1 = svsub_x(pg, a1, as1);
127 svuint64_t b2 = svsub_x(pg, a2, as2);
128
129 b1 = svsub_m(e1, b1, 1);
130 b2 = svsub_m(e2, b2, 1);
131
132 uint64_t b_1 = a_1 - (a_1 >> 32) - e_1;
133 uint64_t b_2 = a_2 - (a_2 >> 32) - e_2;
134 uint64_t b_3 = a_3 - (a_3 >> 32) - e_3;
135 uint64_t b_4 = a_4 - (a_4 >> 32) - e_4;
136
137 uint64_t r_1, r_2, r_3, r_4;
138 uint32_t c_1 = __builtin_sub_overflow(x1_1, b_1, &r_1);
139 uint32_t c_2 = __builtin_sub_overflow(x1_2, b_2, &r_2);
140 uint32_t c_3 = __builtin_sub_overflow(x1_3, b_3, &r_3);
141 uint32_t c_4 = __builtin_sub_overflow(x1_4, b_4, &r_4);
142
143 svuint64_t h1 = svmulh_x(pg, *r1, *op1);
144 svuint64_t h2 = svmulh_x(pg, *r2, *op2);
145
146 svuint64_t tr1 = svsub_x(pg, h1, b1);
147 svuint64_t tr2 = svsub_x(pg, h2, b2);
148
149 svbool_t c1 = svcmplt_u64(pg, h1, b1);
150 svbool_t c2 = svcmplt_u64(pg, h2, b2);
151
152 *r1 = svsub_m(c1, tr1, (uint32_t) -1);
153 *r2 = svsub_m(c2, tr2, (uint32_t) -1);
154
155 uint32_t minus1_1 = 0 - c_1;
156 uint32_t minus1_2 = 0 - c_2;
157 uint32_t minus1_3 = 0 - c_3;
158 uint32_t minus1_4 = 0 - c_4;
159
160 r3[0] = r_1 - (uint64_t)minus1_1;
161 r3[1] = r_2 - (uint64_t)minus1_2;
162 r3[2] = r_3 - (uint64_t)minus1_3;
163 r3[3] = r_4 - (uint64_t)minus1_4;
164}
165
166extern inline void sq(svbool_t pg, svuint64_t *a, svuint64_t *b, uint64_t *c) {
167 mul(pg, a, a, b, b, c, c);
168}
169
170extern inline void apply_sbox(
171 svbool_t pg,
172 svuint64_t *state1,
173 svuint64_t *state2,
174 uint64_t *state3
175) {
176 COPY(x, *state1, *state2, state3); // copy input to x
177 SQUARE(pg, x); // x contains input^2
178 mul(pg, state1, &x_1, state2, &x_2, state3, x_3); // state contains input^3
179 SQUARE(pg, x); // x contains input^4
180 mul(pg, state1, &x_1, state2, &x_2, state3, x_3); // state contains input^7
181}
182
183extern inline void apply_inv_sbox(
184 svbool_t pg,
185 svuint64_t *state_1,
186 svuint64_t *state_2,
187 uint64_t *state_3
188) {
189 // base^10
190 COPY(t1, *state_1, *state_2, state_3);
191 SQUARE(pg, t1);
192
193 // base^100
194 SQUARE_DEST(pg, t2, t1);
195
196 // base^100100
197 POW_ACC_DEST(pg, t3, 3, t2, t2);
198
199 // base^100100100100
200 POW_ACC_DEST(pg, t4, 6, t3, t3);
201
202 // compute base^100100100100100100100100
203 POW_ACC_DEST(pg, t5, 12, t4, t4);
204
205 // compute base^100100100100100100100100100100
206 POW_ACC_DEST(pg, t6, 6, t5, t3);
207
208 // compute base^1001001001001001001001001001000100100100100100100100100100100
209 POW_ACC_DEST(pg, t7, 31, t6, t6);
210
211 // compute base^1001001001001001001001001001000110110110110110110110110110110111
212 SQUARE(pg, t7);
213 MULTIPLY(pg, t7, t6);
214 SQUARE(pg, t7);
215 SQUARE(pg, t7);
216 MULTIPLY(pg, t7, t1);
217 MULTIPLY(pg, t7, t2);
218 mul(pg, state_1, &t7_1, state_2, &t7_2, state_3, t7_3);
219}
220
221#endif //RPO_SVE_RPO_HASH_H