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poly1305-donna.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/poly1305/poly1305-donna.c
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7-
8-
9static inline void poly1305_init(poly1305_context *ctx,-
10 const unsigned char key[32]);-
11static inline void poly1305_update(poly1305_context *ctx,-
12 const unsigned char *m, size_t bytes);-
13static inline void poly1305_finish(poly1305_context *ctx,-
14 unsigned char mac[16]);-
15typedef struct poly1305_state_internal_t {-
16 unsigned long r[5];-
17 unsigned long h[5];-
18 unsigned long pad[4];-
19 size_t leftover;-
20 unsigned char buffer[16];-
21 unsigned char final;-
22} poly1305_state_internal_t;-
23-
24-
25static unsigned long-
26U8TO32(const unsigned char *p)-
27{-
28 return
executed 22834 times by 4 tests: return (((unsigned long)(p[0] & 0xff)) | ((unsigned long)(p[1] & 0xff) << 8) | ((unsigned long)(p[2] & 0xff) << 16) | ((unsigned long)(p[3] & 0xff) << 24));
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
 (((unsigned long)(p[0] & 0xff)) |
executed 22834 times by 4 tests: return (((unsigned long)(p[0] & 0xff)) | ((unsigned long)(p[1] & 0xff) << 8) | ((unsigned long)(p[2] & 0xff) << 16) | ((unsigned long)(p[3] & 0xff) << 24));
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
22834
29 ((unsigned long)(p[1] & 0xff) << 8) |
executed 22834 times by 4 tests: return (((unsigned long)(p[0] & 0xff)) | ((unsigned long)(p[1] & 0xff) << 8) | ((unsigned long)(p[2] & 0xff) << 16) | ((unsigned long)(p[3] & 0xff) << 24));
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
22834
30 ((unsigned long)(p[2] & 0xff) << 16) |
executed 22834 times by 4 tests: return (((unsigned long)(p[0] & 0xff)) | ((unsigned long)(p[1] & 0xff) << 8) | ((unsigned long)(p[2] & 0xff) << 16) | ((unsigned long)(p[3] & 0xff) << 24));
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
22834
31 ((unsigned long)(p[3] & 0xff) << 24));
executed 22834 times by 4 tests: return (((unsigned long)(p[0] & 0xff)) | ((unsigned long)(p[1] & 0xff) << 8) | ((unsigned long)(p[2] & 0xff) << 16) | ((unsigned long)(p[3] & 0xff) << 24));
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
22834
32}-
33-
34-
35static void-
36U32TO8(unsigned char *p, unsigned long v)-
37{-
38 p[0] = (v) & 0xff;-
39 p[1] = (v >> 8) & 0xff;-
40 p[2] = (v >> 16) & 0xff;-
41 p[3] = (v >> 24) & 0xff;-
42}
executed 1704 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
1704
43-
44static inline void-
45poly1305_init(poly1305_context *ctx, const unsigned char key[32])-
46{-
47 poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;-
48-
49-
50 st->r[0] = (U8TO32(&key[0])) & 0x3ffffff;-
51 st->r[1] = (U8TO32(&key[3]) >> 2) & 0x3ffff03;-
52 st->r[2] = (U8TO32(&key[6]) >> 4) & 0x3ffc0ff;-
53 st->r[3] = (U8TO32(&key[9]) >> 6) & 0x3f03fff;-
54 st->r[4] = (U8TO32(&key[12]) >> 8) & 0x00fffff;-
55-
56-
57 st->h[0] = 0;-
58 st->h[1] = 0;-
59 st->h[2] = 0;-
60 st->h[3] = 0;-
61 st->h[4] = 0;-
62-
63-
64 st->pad[0] = U8TO32(&key[16]);-
65 st->pad[1] = U8TO32(&key[20]);-
66 st->pad[2] = U8TO32(&key[24]);-
67 st->pad[3] = U8TO32(&key[28]);-
68-
69 st->leftover = 0;-
70 st->final = 0;-
71}
executed 426 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
426
72-
73static void-
74poly1305_blocks(poly1305_state_internal_t *st, const unsigned char *m, size_t bytes)-
75{-
76 const unsigned long hibit = (
(st->final)Description
TRUEevaluated 242 times by 1 test
Evaluated by:
  • poly1305test
FALSEevaluated 1009 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
st->final)
(st->final)Description
TRUEevaluated 242 times by 1 test
Evaluated by:
  • poly1305test
FALSEevaluated 1009 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
 ? 0 : (1 << 24);		242-1009
77 unsigned long r0, r1, r2, r3, r4;-
78 unsigned long s1, s2, s3, s4;-
79 unsigned long h0, h1, h2, h3, h4;-
80 unsigned long long d0, d1, d2, d3, d4;-
81 unsigned long c;-
82-
83 r0 = st->r[0];-
84 r1 = st->r[1];-
85 r2 = st->r[2];-
86 r3 = st->r[3];-
87 r4 = st->r[4];-
88-
89 s1 = r1 * 5;-
90 s2 = r2 * 5;-
91 s3 = r3 * 5;-
92 s4 = r4 * 5;-
93-
94 h0 = st->h[0];-
95 h1 = st->h[1];-
96 h2 = st->h[2];-
97 h3 = st->h[3];-
98 h4 = st->h[4];-
99-
100 while (bytes >= 16
bytes >= 16Description
TRUEevaluated 3800 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
FALSEevaluated 1251 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
) {		1251-3800
101-
102 h0 += (U8TO32(m + 0)) & 0x3ffffff;-
103 h1 += (U8TO32(m + 3) >> 2) & 0x3ffffff;-
104 h2 += (U8TO32(m + 6) >> 4) & 0x3ffffff;-
105 h3 += (U8TO32(m + 9) >> 6) & 0x3ffffff;-
106 h4 += (U8TO32(m + 12) >> 8) | hibit;-
107-
108-
109 d0 = ((unsigned long long)h0 * r0) +-
110 ((unsigned long long)h1 * s4) +-
111 ((unsigned long long)h2 * s3) +-
112 ((unsigned long long)h3 * s2) +-
113 ((unsigned long long)h4 * s1);-
114 d1 = ((unsigned long long)h0 * r1) +-
115 ((unsigned long long)h1 * r0) +-
116 ((unsigned long long)h2 * s4) +-
117 ((unsigned long long)h3 * s3) +-
118 ((unsigned long long)h4 * s2);-
119 d2 = ((unsigned long long)h0 * r2) +-
120 ((unsigned long long)h1 * r1) +-
121 ((unsigned long long)h2 * r0) +-
122 ((unsigned long long)h3 * s4) +-
123 ((unsigned long long)h4 * s3);-
124 d3 = ((unsigned long long)h0 * r3) +-
125 ((unsigned long long)h1 * r2) +-
126 ((unsigned long long)h2 * r1) +-
127 ((unsigned long long)h3 * r0) +-
128 ((unsigned long long)h4 * s4);-
129 d4 = ((unsigned long long)h0 * r4) +-
130 ((unsigned long long)h1 * r3) +-
131 ((unsigned long long)h2 * r2) +-
132 ((unsigned long long)h3 * r1) +-
133 ((unsigned long long)h4 * r0);-
134-
135-
136 c = (unsigned long)(d0 >> 26);-
137 h0 = (unsigned long)d0 & 0x3ffffff;-
138 d1 += c;-
139 c = (unsigned long)(d1 >> 26);-
140 h1 = (unsigned long)d1 & 0x3ffffff;-
141 d2 += c;-
142 c = (unsigned long)(d2 >> 26);-
143 h2 = (unsigned long)d2 & 0x3ffffff;-
144 d3 += c;-
145 c = (unsigned long)(d3 >> 26);-
146 h3 = (unsigned long)d3 & 0x3ffffff;-
147 d4 += c;-
148 c = (unsigned long)(d4 >> 26);-
149 h4 = (unsigned long)d4 & 0x3ffffff;-
150 h0 += c * 5;-
151 c = (h0 >> 26);-
152 h0 = h0 & 0x3ffffff;-
153 h1 += c;-
154-
155 m += 16;-
156 bytes -= 16;-
157 }
executed 3800 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
3800
158-
159 st->h[0] = h0;-
160 st->h[1] = h1;-
161 st->h[2] = h2;-
162 st->h[3] = h3;-
163 st->h[4] = h4;-
164}
executed 1251 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
1251
165-
166static inline void-
167poly1305_update(poly1305_context *ctx, const unsigned char *m, size_t bytes)-
168{-
169 poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;-
170 size_t i;-
171-
172-
173 if (st->leftover
st->leftoverDescription
TRUEevaluated 381 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
FALSEevaluated 1017 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
) {		381-1017
174 size_t want = (16 - st->leftover);-
175 if (want > bytes
want > bytesDescription
TRUEevaluated 5 times by 1 test
Evaluated by:
  • poly1305test
FALSEevaluated 376 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
)		5-376
176 want = bytes;
executed 5 times by 1 test: want = bytes;
Executed by:
  • poly1305test
5
177 for (i = 0; i < want
i < wantDescription
TRUEevaluated 2420 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
FALSEevaluated 381 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
; i++)		381-2420
178 st->buffer[st->leftover + i] = m[i];
executed 2420 times by 4 tests: st->buffer[st->leftover + i] = m[i];
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
2420
179 bytes -= want;-
180 m += want;-
181 st->leftover += want;-
182 if (st->leftover < 16
st->leftover < 16Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • poly1305test
FALSEevaluated 376 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
)		5-376
183 return;
executed 5 times by 1 test: return;
Executed by:
  • poly1305test
5
184 poly1305_blocks(st, st->buffer, 16);-
185 st->leftover = 0;-
186 }
executed 376 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
376
187-
188-
189 if (bytes >= 16
bytes >= 16Description
TRUEevaluated 633 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
FALSEevaluated 760 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
) {		633-760
190 size_t want = (bytes & ~(16 - 1));-
191 poly1305_blocks(st, m, want);-
192 m += want;-
193 bytes -= want;-
194 }
executed 633 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
633
195-
196-
197 if (bytes
bytesDescription
TRUEevaluated 618 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
FALSEevaluated 775 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
) {		618-775
198 for (i = 0; i < bytes
i < bytesDescription
TRUEevaluated 5522 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
FALSEevaluated 618 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
; i++)		618-5522
199 st->buffer[st->leftover + i] = m[i];
executed 5522 times by 4 tests: st->buffer[st->leftover + i] = m[i];
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
5522
200 st->leftover += bytes;-
201 }
executed 618 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
618
202}
executed 1393 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
1393
203-
204static inline void-
205poly1305_finish(poly1305_context *ctx, unsigned char mac[16])-
206{-
207 poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;-
208 unsigned long h0, h1, h2, h3, h4, c;-
209 unsigned long g0, g1, g2, g3, g4;-
210 unsigned long long f;-
211 unsigned long mask;-
212-
213-
214 if (st->leftover
st->leftoverDescription
TRUEevaluated 242 times by 1 test
Evaluated by:
  • poly1305test
FALSEevaluated 184 times by 4 tests
Evaluated by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
) {		184-242
215 size_t i = st->leftover;-
216 st->buffer[i++] = 1;-
217 for (; i < 16
i < 16Description
TRUEevaluated 1704 times by 1 test
Evaluated by:
  • poly1305test
FALSEevaluated 242 times by 1 test
Evaluated by:
  • poly1305test
; i++)		242-1704
218 st->buffer[i] = 0;
executed 1704 times by 1 test: st->buffer[i] = 0;
Executed by:
  • poly1305test
1704
219 st->final = 1;-
220 poly1305_blocks(st, st->buffer, 16);-
221 }
executed 242 times by 1 test: end of block
Executed by:
  • poly1305test
242
222-
223-
224 h0 = st->h[0];-
225 h1 = st->h[1];-
226 h2 = st->h[2];-
227 h3 = st->h[3];-
228 h4 = st->h[4];-
229-
230 c = h1 >> 26;-
231 h1 = h1 & 0x3ffffff;-
232 h2 += c;-
233 c = h2 >> 26;-
234 h2 = h2 & 0x3ffffff;-
235 h3 += c;-
236 c = h3 >> 26;-
237 h3 = h3 & 0x3ffffff;-
238 h4 += c;-
239 c = h4 >> 26;-
240 h4 = h4 & 0x3ffffff;-
241 h0 += c * 5;-
242 c = h0 >> 26;-
243 h0 = h0 & 0x3ffffff;-
244 h1 += c;-
245-
246-
247 g0 = h0 + 5;-
248 c = g0 >> 26;-
249 g0 &= 0x3ffffff;-
250 g1 = h1 + c;-
251 c = g1 >> 26;-
252 g1 &= 0x3ffffff;-
253 g2 = h2 + c;-
254 c = g2 >> 26;-
255 g2 &= 0x3ffffff;-
256 g3 = h3 + c;-
257 c = g3 >> 26;-
258 g3 &= 0x3ffffff;-
259 g4 = h4 + c - (1 << 26);-
260-
261-
262 mask = (g4 >> ((sizeof(unsigned long) * 8) - 1)) - 1;-
263 g0 &= mask;-
264 g1 &= mask;-
265 g2 &= mask;-
266 g3 &= mask;-
267 g4 &= mask;-
268 mask = ~mask;-
269 h0 = (h0 & mask) | g0;-
270 h1 = (h1 & mask) | g1;-
271 h2 = (h2 & mask) | g2;-
272 h3 = (h3 & mask) | g3;-
273 h4 = (h4 & mask) | g4;-
274-
275-
276 h0 = ((h0) | (h1 << 26)) & 0xffffffff;-
277 h1 = ((h1 >> 6) | (h2 << 20)) & 0xffffffff;-
278 h2 = ((h2 >> 12) | (h3 << 14)) & 0xffffffff;-
279 h3 = ((h3 >> 18) | (h4 << 8)) & 0xffffffff;-
280-
281-
282 f = (unsigned long long)h0 + st->pad[0];-
283 h0 = (unsigned long)f;-
284 f = (unsigned long long)h1 + st->pad[1] + (f >> 32);-
285 h1 = (unsigned long)f;-
286 f = (unsigned long long)h2 + st->pad[2] + (f >> 32);-
287 h2 = (unsigned long)f;-
288 f = (unsigned long long)h3 + st->pad[3] + (f >> 32);-
289 h3 = (unsigned long)f;-
290-
291 U32TO8(mac + 0, h0);-
292 U32TO8(mac + 4, h1);-
293 U32TO8(mac + 8, h2);-
294 U32TO8(mac + 12, h3);-
295-
296-
297 st->h[0] = 0;-
298 st->h[1] = 0;-
299 st->h[2] = 0;-
300 st->h[3] = 0;-
301 st->h[4] = 0;-
302 st->r[0] = 0;-
303 st->r[1] = 0;-
304 st->r[2] = 0;-
305 st->r[3] = 0;-
306 st->r[4] = 0;-
307 st->pad[0] = 0;-
308 st->pad[1] = 0;-
309 st->pad[2] = 0;-
310 st->pad[3] = 0;-
311}
executed 426 times by 4 tests: end of block
Executed by:
  • aeadtest
  • poly1305test
  • ssltest
  • tlstest
426
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