Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/openssh/src/ge25519.c |
Switch to Source code | Preprocessed file |
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1 | - | |||||||
2 | static const crypto_sign_ed25519_ref_fe25519 ge25519_ecd = {{0xA3, 0x78, 0x59, 0x13, 0xCA, 0x4D, 0xEB, 0x75, 0xAB, 0xD8, 0x41, 0x41, 0x4D, 0x0A, 0x70, 0x00, | - | ||||||
3 | 0x98, 0xE8, 0x79, 0x77, 0x79, 0x40, 0xC7, 0x8C, 0x73, 0xFE, 0x6F, 0x2B, 0xEE, 0x6C, 0x03, 0x52}}; | - | ||||||
4 | - | |||||||
5 | static const crypto_sign_ed25519_ref_fe25519 ge25519_ec2d = {{0x59, 0xF1, 0xB2, 0x26, 0x94, 0x9B, 0xD6, 0xEB, 0x56, 0xB1, 0x83, 0x82, 0x9A, 0x14, 0xE0, 0x00, | - | ||||||
6 | 0x30, 0xD1, 0xF3, 0xEE, 0xF2, 0x80, 0x8E, 0x19, 0xE7, 0xFC, 0xDF, 0x56, 0xDC, 0xD9, 0x06, 0x24}}; | - | ||||||
7 | - | |||||||
8 | static const crypto_sign_ed25519_ref_fe25519 ge25519_sqrtm1 = {{0xB0, 0xA0, 0x0E, 0x4A, 0x27, 0x1B, 0xEE, 0xC4, 0x78, 0xE4, 0x2F, 0xAD, 0x06, 0x18, 0x43, 0x2F, | - | ||||||
9 | 0xA7, 0xD7, 0xFB, 0x3D, 0x99, 0x00, 0x4D, 0x2B, 0x0B, 0xDF, 0xC1, 0x4F, 0x80, 0x24, 0x83, 0x2B}}; | - | ||||||
10 | - | |||||||
11 | - | |||||||
12 | - | |||||||
13 | typedef struct | - | ||||||
14 | { | - | ||||||
15 | crypto_sign_ed25519_ref_fe25519 x; | - | ||||||
16 | crypto_sign_ed25519_ref_fe25519 z; | - | ||||||
17 | crypto_sign_ed25519_ref_fe25519 y; | - | ||||||
18 | crypto_sign_ed25519_ref_fe25519 t; | - | ||||||
19 | } ge25519_p1p1; | - | ||||||
20 | - | |||||||
21 | typedef struct | - | ||||||
22 | { | - | ||||||
23 | crypto_sign_ed25519_ref_fe25519 x; | - | ||||||
24 | crypto_sign_ed25519_ref_fe25519 y; | - | ||||||
25 | crypto_sign_ed25519_ref_fe25519 z; | - | ||||||
26 | } ge25519_p2; | - | ||||||
27 | - | |||||||
28 | typedef struct | - | ||||||
29 | { | - | ||||||
30 | crypto_sign_ed25519_ref_fe25519 x; | - | ||||||
31 | crypto_sign_ed25519_ref_fe25519 y; | - | ||||||
32 | } ge25519_aff; | - | ||||||
33 | - | |||||||
34 | - | |||||||
35 | - | |||||||
36 | const crypto_sign_ed25519_ref_ge25519 crypto_sign_ed25519_ref_ge25519_base = {{{0x1A, 0xD5, 0x25, 0x8F, 0x60, 0x2D, 0x56, 0xC9, 0xB2, 0xA7, 0x25, 0x95, 0x60, 0xC7, 0x2C, 0x69, | - | ||||||
37 | 0x5C, 0xDC, 0xD6, 0xFD, 0x31, 0xE2, 0xA4, 0xC0, 0xFE, 0x53, 0x6E, 0xCD, 0xD3, 0x36, 0x69, 0x21}}, | - | ||||||
38 | {{0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, | - | ||||||
39 | 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66}}, | - | ||||||
40 | {{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | - | ||||||
41 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}, | - | ||||||
42 | {{0xA3, 0xDD, 0xB7, 0xA5, 0xB3, 0x8A, 0xDE, 0x6D, 0xF5, 0x52, 0x51, 0x77, 0x80, 0x9F, 0xF0, 0x20, | - | ||||||
43 | 0x7D, 0xE3, 0xAB, 0x64, 0x8E, 0x4E, 0xEA, 0x66, 0x65, 0x76, 0x8B, 0xD7, 0x0F, 0x5F, 0x87, 0x67}}}; | - | ||||||
44 | - | |||||||
45 | - | |||||||
46 | static const ge25519_aff ge25519_base_multiples_affine[425] = { | - | ||||||
47 | }; | - | ||||||
48 | - | |||||||
49 | static void p1p1_to_p2(ge25519_p2 *r, const ge25519_p1p1 *p) | - | ||||||
50 | { | - | ||||||
51 | crypto_sign_ed25519_ref_fe25519_mul(&r->x, &p->x, &p->t); | - | ||||||
52 | crypto_sign_ed25519_ref_fe25519_mul(&r->y, &p->y, &p->z); | - | ||||||
53 | crypto_sign_ed25519_ref_fe25519_mul(&r->z, &p->z, &p->t); | - | ||||||
54 | } executed 5340538 times by 2 tests: end of block Executed by:
| 5340538 | ||||||
55 | - | |||||||
56 | static void p1p1_to_p3(crypto_sign_ed25519_ref_ge25519 *r, const ge25519_p1p1 *p) | - | ||||||
57 | { | - | ||||||
58 | p1p1_to_p2((ge25519_p2 *)r, p); | - | ||||||
59 | crypto_sign_ed25519_ref_fe25519_mul(&r->t, &p->x, &p->y); | - | ||||||
60 | } executed 1846116 times by 2 tests: end of block Executed by:
| 1846116 | ||||||
61 | - | |||||||
62 | static void ge25519_mixadd2(crypto_sign_ed25519_ref_ge25519 *r, const ge25519_aff *q) | - | ||||||
63 | { | - | ||||||
64 | crypto_sign_ed25519_ref_fe25519 a,b,t1,t2,c,d,e,f,g,h,qt; | - | ||||||
65 | crypto_sign_ed25519_ref_fe25519_mul(&qt, &q->x, &q->y); | - | ||||||
66 | crypto_sign_ed25519_ref_fe25519_sub(&a, &r->y, &r->x); | - | ||||||
67 | crypto_sign_ed25519_ref_fe25519_add(&b, &r->y, &r->x); | - | ||||||
68 | crypto_sign_ed25519_ref_fe25519_sub(&t1, &q->y, &q->x); | - | ||||||
69 | crypto_sign_ed25519_ref_fe25519_add(&t2, &q->y, &q->x); | - | ||||||
70 | crypto_sign_ed25519_ref_fe25519_mul(&a, &a, &t1); | - | ||||||
71 | crypto_sign_ed25519_ref_fe25519_mul(&b, &b, &t2); | - | ||||||
72 | crypto_sign_ed25519_ref_fe25519_sub(&e, &b, &a); | - | ||||||
73 | crypto_sign_ed25519_ref_fe25519_add(&h, &b, &a); | - | ||||||
74 | crypto_sign_ed25519_ref_fe25519_mul(&c, &r->t, &qt); | - | ||||||
75 | crypto_sign_ed25519_ref_fe25519_mul(&c, &c, &ge25519_ec2d); | - | ||||||
76 | crypto_sign_ed25519_ref_fe25519_add(&d, &r->z, &r->z); | - | ||||||
77 | crypto_sign_ed25519_ref_fe25519_sub(&f, &d, &c); | - | ||||||
78 | crypto_sign_ed25519_ref_fe25519_add(&g, &d, &c); | - | ||||||
79 | crypto_sign_ed25519_ref_fe25519_mul(&r->x, &e, &f); | - | ||||||
80 | crypto_sign_ed25519_ref_fe25519_mul(&r->y, &h, &g); | - | ||||||
81 | crypto_sign_ed25519_ref_fe25519_mul(&r->z, &g, &f); | - | ||||||
82 | crypto_sign_ed25519_ref_fe25519_mul(&r->t, &e, &h); | - | ||||||
83 | } executed 6552 times by 3 tests: end of block Executed by:
| 6552 | ||||||
84 | - | |||||||
85 | static void add_p1p1(ge25519_p1p1 *r, const crypto_sign_ed25519_ref_ge25519 *p, const crypto_sign_ed25519_ref_ge25519 *q) | - | ||||||
86 | { | - | ||||||
87 | crypto_sign_ed25519_ref_fe25519 a, b, c, d, t; | - | ||||||
88 | - | |||||||
89 | crypto_sign_ed25519_ref_fe25519_sub(&a, &p->y, &p->x); | - | ||||||
90 | crypto_sign_ed25519_ref_fe25519_sub(&t, &q->y, &q->x); | - | ||||||
91 | crypto_sign_ed25519_ref_fe25519_mul(&a, &a, &t); | - | ||||||
92 | crypto_sign_ed25519_ref_fe25519_add(&b, &p->x, &p->y); | - | ||||||
93 | crypto_sign_ed25519_ref_fe25519_add(&t, &q->x, &q->y); | - | ||||||
94 | crypto_sign_ed25519_ref_fe25519_mul(&b, &b, &t); | - | ||||||
95 | crypto_sign_ed25519_ref_fe25519_mul(&c, &p->t, &q->t); | - | ||||||
96 | crypto_sign_ed25519_ref_fe25519_mul(&c, &c, &ge25519_ec2d); | - | ||||||
97 | crypto_sign_ed25519_ref_fe25519_mul(&d, &p->z, &q->z); | - | ||||||
98 | crypto_sign_ed25519_ref_fe25519_add(&d, &d, &d); | - | ||||||
99 | crypto_sign_ed25519_ref_fe25519_sub(&r->x, &b, &a); | - | ||||||
100 | crypto_sign_ed25519_ref_fe25519_sub(&r->t, &d, &c); | - | ||||||
101 | crypto_sign_ed25519_ref_fe25519_add(&r->z, &d, &c); | - | ||||||
102 | crypto_sign_ed25519_ref_fe25519_add(&r->y, &b, &a); | - | ||||||
103 | } executed 1790428 times by 2 tests: end of block Executed by:
| 1790428 | ||||||
104 | - | |||||||
105 | - | |||||||
106 | static void dbl_p1p1(ge25519_p1p1 *r, const ge25519_p2 *p) | - | ||||||
107 | { | - | ||||||
108 | crypto_sign_ed25519_ref_fe25519 a,b,c,d; | - | ||||||
109 | crypto_sign_ed25519_ref_fe25519_square(&a, &p->x); | - | ||||||
110 | crypto_sign_ed25519_ref_fe25519_square(&b, &p->y); | - | ||||||
111 | crypto_sign_ed25519_ref_fe25519_square(&c, &p->z); | - | ||||||
112 | crypto_sign_ed25519_ref_fe25519_add(&c, &c, &c); | - | ||||||
113 | crypto_sign_ed25519_ref_fe25519_neg(&d, &a); | - | ||||||
114 | - | |||||||
115 | crypto_sign_ed25519_ref_fe25519_add(&r->x, &p->x, &p->y); | - | ||||||
116 | crypto_sign_ed25519_ref_fe25519_square(&r->x, &r->x); | - | ||||||
117 | crypto_sign_ed25519_ref_fe25519_sub(&r->x, &r->x, &a); | - | ||||||
118 | crypto_sign_ed25519_ref_fe25519_sub(&r->x, &r->x, &b); | - | ||||||
119 | crypto_sign_ed25519_ref_fe25519_add(&r->z, &d, &b); | - | ||||||
120 | crypto_sign_ed25519_ref_fe25519_sub(&r->t, &r->z, &c); | - | ||||||
121 | crypto_sign_ed25519_ref_fe25519_sub(&r->y, &d, &b); | - | ||||||
122 | } executed 3550110 times by 2 tests: end of block Executed by:
| 3550110 | ||||||
123 | - | |||||||
124 | - | |||||||
125 | static void cmov_aff(ge25519_aff *r, const ge25519_aff *p, unsigned char b) | - | ||||||
126 | { | - | ||||||
127 | crypto_sign_ed25519_ref_fe25519_cmov(&r->x, &p->x, b); | - | ||||||
128 | crypto_sign_ed25519_ref_fe25519_cmov(&r->y, &p->y, b); | - | ||||||
129 | } executed 26520 times by 3 tests: end of block Executed by:
| 26520 | ||||||
130 | - | |||||||
131 | static unsigned char equal(signed char b,signed char c) | - | ||||||
132 | { | - | ||||||
133 | unsigned char ub = b; | - | ||||||
134 | unsigned char uc = c; | - | ||||||
135 | unsigned char x = ub ^ uc; | - | ||||||
136 | crypto_uint32 y = x; | - | ||||||
137 | y -= 1; | - | ||||||
138 | y >>= 31; | - | ||||||
139 | return executed 46410 times by 3 tests: y;return y; Executed by:
executed 46410 times by 3 tests: return y; Executed by:
| 46410 | ||||||
140 | } | - | ||||||
141 | - | |||||||
142 | static unsigned char negative(signed char b) | - | ||||||
143 | { | - | ||||||
144 | unsigned long long x = b; | - | ||||||
145 | x >>= 63; | - | ||||||
146 | return executed 6630 times by 3 tests: x;return x; Executed by:
executed 6630 times by 3 tests: return x; Executed by:
| 6630 | ||||||
147 | } | - | ||||||
148 | - | |||||||
149 | static void choose_t(ge25519_aff *t, unsigned long long pos, signed char b) | - | ||||||
150 | { | - | ||||||
151 | - | |||||||
152 | crypto_sign_ed25519_ref_fe25519 v; | - | ||||||
153 | *t = ge25519_base_multiples_affine[5*pos+0]; | - | ||||||
154 | cmov_aff(t, &ge25519_base_multiples_affine[5*pos+1],equal(b,1) | equal(b,-1)); | - | ||||||
155 | cmov_aff(t, &ge25519_base_multiples_affine[5*pos+2],equal(b,2) | equal(b,-2)); | - | ||||||
156 | cmov_aff(t, &ge25519_base_multiples_affine[5*pos+3],equal(b,3) | equal(b,-3)); | - | ||||||
157 | cmov_aff(t, &ge25519_base_multiples_affine[5*pos+4],equal(b,-4)); | - | ||||||
158 | crypto_sign_ed25519_ref_fe25519_neg(&v, &t->x); | - | ||||||
159 | crypto_sign_ed25519_ref_fe25519_cmov(&t->x, &v, negative(b)); | - | ||||||
160 | } executed 6630 times by 3 tests: end of block Executed by:
| 6630 | ||||||
161 | - | |||||||
162 | static void setneutral(crypto_sign_ed25519_ref_ge25519 *r) | - | ||||||
163 | { | - | ||||||
164 | crypto_sign_ed25519_ref_fe25519_setzero(&r->x); | - | ||||||
165 | crypto_sign_ed25519_ref_fe25519_setone(&r->y); | - | ||||||
166 | crypto_sign_ed25519_ref_fe25519_setone(&r->z); | - | ||||||
167 | crypto_sign_ed25519_ref_fe25519_setzero(&r->t); | - | ||||||
168 | } executed 13922 times by 2 tests: end of block Executed by:
| 13922 | ||||||
169 | - | |||||||
170 | - | |||||||
171 | - | |||||||
172 | - | |||||||
173 | - | |||||||
174 | - | |||||||
175 | int crypto_sign_ed25519_ref_unpackneg_vartime(crypto_sign_ed25519_ref_ge25519 *r, const unsigned char p[32]) | - | ||||||
176 | { | - | ||||||
177 | unsigned char par; | - | ||||||
178 | crypto_sign_ed25519_ref_fe25519 t, chk, num, den, den2, den4, den6; | - | ||||||
179 | crypto_sign_ed25519_ref_fe25519_setone(&r->z); | - | ||||||
180 | par = p[31] >> 7; | - | ||||||
181 | crypto_sign_ed25519_ref_fe25519_unpack(&r->y, p); | - | ||||||
182 | crypto_sign_ed25519_ref_fe25519_square(&num, &r->y); | - | ||||||
183 | crypto_sign_ed25519_ref_fe25519_mul(&den, &num, &ge25519_ecd); | - | ||||||
184 | crypto_sign_ed25519_ref_fe25519_sub(&num, &num, &r->z); | - | ||||||
185 | crypto_sign_ed25519_ref_fe25519_add(&den, &r->z, &den); | - | ||||||
186 | - | |||||||
187 | - | |||||||
188 | - | |||||||
189 | crypto_sign_ed25519_ref_fe25519_square(&den2, &den); | - | ||||||
190 | crypto_sign_ed25519_ref_fe25519_square(&den4, &den2); | - | ||||||
191 | crypto_sign_ed25519_ref_fe25519_mul(&den6, &den4, &den2); | - | ||||||
192 | crypto_sign_ed25519_ref_fe25519_mul(&t, &den6, &num); | - | ||||||
193 | crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &den); | - | ||||||
194 | - | |||||||
195 | crypto_sign_ed25519_ref_fe25519_pow2523(&t, &t); | - | ||||||
196 | - | |||||||
197 | crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &num); | - | ||||||
198 | crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &den); | - | ||||||
199 | crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &den); | - | ||||||
200 | crypto_sign_ed25519_ref_fe25519_mul(&r->x, &t, &den); | - | ||||||
201 | - | |||||||
202 | - | |||||||
203 | crypto_sign_ed25519_ref_fe25519_square(&chk, &r->x); | - | ||||||
204 | crypto_sign_ed25519_ref_fe25519_mul(&chk, &chk, &den); | - | ||||||
205 | if (!crypto_sign_ed25519_ref_fe25519_iseq_vartime(&chk, &num)
| 216-14183 | ||||||
206 | crypto_sign_ed25519_ref_fe25519_mul(&r->x, &r->x, &ge25519_sqrtm1); executed 14183 times by 2 tests: crypto_sign_ed25519_ref_fe25519_mul(&r->x, &r->x, &ge25519_sqrtm1); Executed by:
| 14183 | ||||||
207 | - | |||||||
208 | - | |||||||
209 | crypto_sign_ed25519_ref_fe25519_square(&chk, &r->x); | - | ||||||
210 | crypto_sign_ed25519_ref_fe25519_mul(&chk, &chk, &den); | - | ||||||
211 | if (!crypto_sign_ed25519_ref_fe25519_iseq_vartime(&chk, &num)
| 477-13922 | ||||||
212 | return executed 477 times by 1 test: -1;return -1; Executed by:
executed 477 times by 1 test: return -1; Executed by:
| 477 | ||||||
213 | - | |||||||
214 | - | |||||||
215 | if(crypto_sign_ed25519_ref_fe25519_getparity(&r->x) != (1-par)
| 227-13695 | ||||||
216 | crypto_sign_ed25519_ref_fe25519_neg(&r->x, &r->x); executed 227 times by 2 tests: crypto_sign_ed25519_ref_fe25519_neg(&r->x, &r->x); Executed by:
| 227 | ||||||
217 | - | |||||||
218 | crypto_sign_ed25519_ref_fe25519_mul(&r->t, &r->x, &r->y); | - | ||||||
219 | return executed 13922 times by 2 tests: 0;return 0; Executed by:
executed 13922 times by 2 tests: return 0; Executed by:
| 13922 | ||||||
220 | } | - | ||||||
221 | - | |||||||
222 | void crypto_sign_ed25519_ref_pack(unsigned char r[32], const crypto_sign_ed25519_ref_ge25519 *p) | - | ||||||
223 | { | - | ||||||
224 | crypto_sign_ed25519_ref_fe25519 tx, ty, zi; | - | ||||||
225 | crypto_sign_ed25519_ref_fe25519_invert(&zi, &p->z); | - | ||||||
226 | crypto_sign_ed25519_ref_fe25519_mul(&tx, &p->x, &zi); | - | ||||||
227 | crypto_sign_ed25519_ref_fe25519_mul(&ty, &p->y, &zi); | - | ||||||
228 | crypto_sign_ed25519_ref_fe25519_pack(r, &ty); | - | ||||||
229 | r[31] ^= crypto_sign_ed25519_ref_fe25519_getparity(&tx) << 7; | - | ||||||
230 | } executed 14000 times by 3 tests: end of block Executed by:
| 14000 | ||||||
231 | - | |||||||
232 | int crypto_sign_ed25519_ref_isneutral_vartime(const crypto_sign_ed25519_ref_ge25519 *p) | - | ||||||
233 | { | - | ||||||
234 | int ret = 1; | - | ||||||
235 | if(!crypto_sign_ed25519_ref_fe25519_iszero(&p->x)
never executed: ret = 0; | 0 | ||||||
236 | if(!crypto_sign_ed25519_ref_fe25519_iseq_vartime(&p->y, &p->z)
never executed: ret = 0; | 0 | ||||||
237 | return never executed: ret;return ret; never executed: return ret; | 0 | ||||||
238 | } | - | ||||||
239 | - | |||||||
240 | - | |||||||
241 | void crypto_sign_ed25519_ref_double_scalarmult_vartime(crypto_sign_ed25519_ref_ge25519 *r, const crypto_sign_ed25519_ref_ge25519 *p1, const crypto_sign_ed25519_ref_sc25519 *s1, const crypto_sign_ed25519_ref_ge25519 *p2, const crypto_sign_ed25519_ref_sc25519 *s2) | - | ||||||
242 | { | - | ||||||
243 | ge25519_p1p1 tp1p1; | - | ||||||
244 | crypto_sign_ed25519_ref_ge25519 pre[16]; | - | ||||||
245 | unsigned char b[127]; | - | ||||||
246 | int i; | - | ||||||
247 | - | |||||||
248 | - | |||||||
249 | setneutral(pre); | - | ||||||
250 | pre[1] = *p1; | - | ||||||
251 | dbl_p1p1(&tp1p1,(ge25519_p2 *)p1); p1p1_to_p3( &pre[2], &tp1p1); | - | ||||||
252 | add_p1p1(&tp1p1,&pre[1], &pre[2]); p1p1_to_p3( &pre[3], &tp1p1); | - | ||||||
253 | pre[4] = *p2; | - | ||||||
254 | add_p1p1(&tp1p1,&pre[1], &pre[4]); p1p1_to_p3( &pre[5], &tp1p1); | - | ||||||
255 | add_p1p1(&tp1p1,&pre[2], &pre[4]); p1p1_to_p3( &pre[6], &tp1p1); | - | ||||||
256 | add_p1p1(&tp1p1,&pre[3], &pre[4]); p1p1_to_p3( &pre[7], &tp1p1); | - | ||||||
257 | dbl_p1p1(&tp1p1,(ge25519_p2 *)p2); p1p1_to_p3( &pre[8], &tp1p1); | - | ||||||
258 | add_p1p1(&tp1p1,&pre[1], &pre[8]); p1p1_to_p3( &pre[9], &tp1p1); | - | ||||||
259 | dbl_p1p1(&tp1p1,(ge25519_p2 *)&pre[5]); p1p1_to_p3(&pre[10], &tp1p1); | - | ||||||
260 | add_p1p1(&tp1p1,&pre[3], &pre[8]); p1p1_to_p3(&pre[11], &tp1p1); | - | ||||||
261 | add_p1p1(&tp1p1,&pre[4], &pre[8]); p1p1_to_p3(&pre[12], &tp1p1); | - | ||||||
262 | add_p1p1(&tp1p1,&pre[1],&pre[12]); p1p1_to_p3(&pre[13], &tp1p1); | - | ||||||
263 | add_p1p1(&tp1p1,&pre[2],&pre[12]); p1p1_to_p3(&pre[14], &tp1p1); | - | ||||||
264 | add_p1p1(&tp1p1,&pre[3],&pre[12]); p1p1_to_p3(&pre[15], &tp1p1); | - | ||||||
265 | - | |||||||
266 | crypto_sign_ed25519_ref_sc25519_2interleave2(b,s1,s2); | - | ||||||
267 | - | |||||||
268 | - | |||||||
269 | *r = pre[b[126]]; | - | ||||||
270 | for(i=125;i>=0
| 13922-1754172 | ||||||
271 | { | - | ||||||
272 | dbl_p1p1(&tp1p1, (ge25519_p2 *)r); | - | ||||||
273 | p1p1_to_p2((ge25519_p2 *) r, &tp1p1); | - | ||||||
274 | dbl_p1p1(&tp1p1, (ge25519_p2 *)r); | - | ||||||
275 | if(b[i]!=0
| 102964-1651208 | ||||||
276 | { | - | ||||||
277 | p1p1_to_p3(r, &tp1p1); | - | ||||||
278 | add_p1p1(&tp1p1, r, &pre[b[i]]); | - | ||||||
279 | } executed 1651208 times by 2 tests: end of block Executed by:
| 1651208 | ||||||
280 | if(i != 0
executed 1740250 times by 2 tests: p1p1_to_p2((ge25519_p2 *)r, &tp1p1); Executed by:
| 13922-1740250 | ||||||
281 | else p1p1_to_p3(r, &tp1p1); executed 13922 times by 2 tests: p1p1_to_p3(r, &tp1p1); Executed by:
| 13922 | ||||||
282 | } | - | ||||||
283 | } executed 13922 times by 2 tests: end of block Executed by:
| 13922 | ||||||
284 | - | |||||||
285 | void crypto_sign_ed25519_ref_scalarmult_base(crypto_sign_ed25519_ref_ge25519 *r, const crypto_sign_ed25519_ref_sc25519 *s) | - | ||||||
286 | { | - | ||||||
287 | signed char b[85]; | - | ||||||
288 | int i; | - | ||||||
289 | ge25519_aff t; | - | ||||||
290 | crypto_sign_ed25519_ref_sc25519_window3(b,s); | - | ||||||
291 | - | |||||||
292 | choose_t((ge25519_aff *)r, 0, b[0]); | - | ||||||
293 | crypto_sign_ed25519_ref_fe25519_setone(&r->z); | - | ||||||
294 | crypto_sign_ed25519_ref_fe25519_mul(&r->t, &r->x, &r->y); | - | ||||||
295 | for(i=1;i<85
| 78-6552 | ||||||
296 | { | - | ||||||
297 | choose_t(&t, (unsigned long long) i, b[i]); | - | ||||||
298 | ge25519_mixadd2(r, &t); | - | ||||||
299 | } executed 6552 times by 3 tests: end of block Executed by:
| 6552 | ||||||
300 | } executed 78 times by 3 tests: end of block Executed by:
| 78 | ||||||
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