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f_impl.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/ec/curve448/arch_32/f_impl.c
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1/*-
2 * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.-
3 * Copyright 2014 Cryptography Research, Inc.-
4 *-
5 * Licensed under the OpenSSL license (the "License"). You may not use-
6 * this file except in compliance with the License. You can obtain a copy-
7 * in the file LICENSE in the source distribution or at-
8 * https://www.openssl.org/source/license.html-
9 *-
10 * Originally written by Mike Hamburg-
11 */-
12-
13#include "field.h"-
14-
15void gf_mul(gf_s * RESTRICT cs, const gf as, const gf bs)-
16{-
17 const uint32_t *a = as->limb, *b = bs->limb;-
18 uint32_t *c = cs->limb;-
19 uint64_t accum0 = 0, accum1 = 0, accum2 = 0;-
20 uint32_t mask = (1 << 28) - 1;-
21 uint32_t aa[8], bb[8];-
22 int i, j;-
23-
24 for (i = 0; i < 8; i++) {
i < 8Description
TRUEevaluated 38013344 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
FALSEevaluated 4751668 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
4751668-38013344
25 aa[i] = a[i] + a[i + 8];-
26 bb[i] = b[i] + b[i + 8];-
27 }
executed 38013344 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
38013344
28-
29 for (j = 0; j < 8; j++) {
j < 8Description
TRUEevaluated 38013344 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
FALSEevaluated 4751668 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
4751668-38013344
30 accum2 = 0;-
31 for (i = 0; i < j + 1; i++) {
i < j + 1Description
TRUEevaluated 171060048 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
FALSEevaluated 38013344 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
38013344-171060048
32 accum2 += widemul(a[j - i], b[i]);-
33 accum1 += widemul(aa[j - i], bb[i]);-
34 accum0 += widemul(a[8 + j - i], b[8 + i]);-
35 }
executed 171060048 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
171060048
36 accum1 -= accum2;-
37 accum0 += accum2;-
38 accum2 = 0;-
39 for (i = j + 1; i < 8; i++) {
i < 8Description
TRUEevaluated 133046704 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
FALSEevaluated 38013344 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
38013344-133046704
40 accum0 -= widemul(a[8 + j - i], b[i]);-
41 accum2 += widemul(aa[8 + j - i], bb[i]);-
42 accum1 += widemul(a[16 + j - i], b[8 + i]);-
43 }
executed 133046704 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
133046704
44 accum1 += accum2;-
45 accum0 += accum2;-
46 c[j] = ((uint32_t)(accum0)) & mask;-
47 c[j + 8] = ((uint32_t)(accum1)) & mask;-
48 accum0 >>= 28;-
49 accum1 >>= 28;-
50 }
executed 38013344 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
38013344
51-
52 accum0 += accum1;-
53 accum0 += c[8];-
54 accum1 += c[0];-
55 c[8] = ((uint32_t)(accum0)) & mask;-
56 c[0] = ((uint32_t)(accum1)) & mask;-
57-
58 accum0 >>= 28;-
59 accum1 >>= 28;-
60 c[9] += ((uint32_t)(accum0));-
61 c[1] += ((uint32_t)(accum1));-
62}
executed 4751668 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
4751668
63-
64void gf_mulw_unsigned(gf_s * RESTRICT cs, const gf as, uint32_t b)-
65{-
66 const uint32_t *a = as->limb;-
67 uint32_t *c = cs->limb;-
68 uint64_t accum0 = 0, accum8 = 0;-
69 uint32_t mask = (1 << 28) - 1;-
70 int i;-
71-
72 assert(b <= mask);-
73-
74 for (i = 0; i < 8; i++) {
i < 8Description
TRUEevaluated 3634968 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
FALSEevaluated 454371 times by 2 tests
Evaluated by:
  • curve448_internal_test
  • libcrypto.so.1.1
454371-3634968
75 accum0 += widemul(b, a[i]);-
76 accum8 += widemul(b, a[i + 8]);-
77 c[i] = accum0 & mask;-
78 accum0 >>= 28;-
79 c[i + 8] = accum8 & mask;-
80 accum8 >>= 28;-
81 }
executed 3634968 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
3634968
82-
83 accum0 += accum8 + c[8];-
84 c[8] = ((uint32_t)accum0) & mask;-
85 c[9] += (uint32_t)(accum0 >> 28);-
86-
87 accum8 += c[0];-
88 c[0] = ((uint32_t)accum8) & mask;-
89 c[1] += (uint32_t)(accum8 >> 28);-
90}
executed 454371 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
454371
91-
92void gf_sqr(gf_s * RESTRICT cs, const gf as)-
93{-
94 gf_mul(cs, as, as); /* Performs better with a dedicated square */-
95}
executed 2358815 times by 2 tests: end of block
Executed by:
  • curve448_internal_test
  • libcrypto.so.1.1
2358815
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