OpenCoverage

dh_asn1.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/dh/dh_asn1.c
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1/*-
2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.-
3 *-
4 * Licensed under the OpenSSL license (the "License"). You may not use-
5 * this file except in compliance with the License. You can obtain a copy-
6 * in the file LICENSE in the source distribution or at-
7 * https://www.openssl.org/source/license.html-
8 */-
9-
10#include <stdio.h>-
11#include "internal/cryptlib.h"-
12#include <openssl/bn.h>-
13#include "dh_locl.h"-
14#include <openssl/objects.h>-
15#include <openssl/asn1t.h>-
16-
17/* Override the default free and new methods */-
18static int dh_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,-
19 void *exarg)-
20{-
21 if (operation == ASN1_OP_NEW_PRE) {
operation == 0Description
TRUEevaluated 5953 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 12104 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
5953-12104
22 *pval = (ASN1_VALUE *)DH_new();-
23 if (*pval != NULL)
*pval != ((void *)0)Description
TRUEevaluated 5953 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-5953
24 return 2;
executed 5953 times by 1 test: return 2;
Executed by:
  • libcrypto.so.1.1
5953
25 return 0;
never executed: return 0;
0
26 } else if (operation == ASN1_OP_FREE_PRE) {
operation == 2Description
TRUEevaluated 5909 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 6195 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
5909-6195
27 DH_free((DH *)*pval);-
28 *pval = NULL;-
29 return 2;
executed 5909 times by 1 test: return 2;
Executed by:
  • libcrypto.so.1.1
5909
30 }-
31 return 1;
executed 6195 times by 1 test: return 1;
Executed by:
  • libcrypto.so.1.1
6195
32}-
33-
34ASN1_SEQUENCE_cb(DHparams, dh_cb) = {-
35 ASN1_SIMPLE(DH, p, BIGNUM),-
36 ASN1_SIMPLE(DH, g, BIGNUM),-
37 ASN1_OPT_EMBED(DH, length, ZINT32),-
38} ASN1_SEQUENCE_END_cb(DH, DHparams)-
39-
40IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DH, DHparams, DHparams)
executed 3352 times by 1 test: return (DH *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, (&(DHparams_it)));
Executed by:
  • libcrypto.so.1.1
executed 22 times by 1 test: return ASN1_item_i2d((ASN1_VALUE *)a, out, (&(DHparams_it)));
Executed by:
  • libcrypto.so.1.1
22-3352
41-
42/*-
43 * Internal only structures for handling X9.42 DH: this gets translated to or-
44 * from a DH structure straight away.-
45 */-
46-
47typedef struct {-
48 ASN1_BIT_STRING *seed;-
49 BIGNUM *counter;-
50} int_dhvparams;-
51-
52typedef struct {-
53 BIGNUM *p;-
54 BIGNUM *q;-
55 BIGNUM *g;-
56 BIGNUM *j;-
57 int_dhvparams *vparams;-
58} int_dhx942_dh;-
59-
60ASN1_SEQUENCE(DHvparams) = {-
61 ASN1_SIMPLE(int_dhvparams, seed, ASN1_BIT_STRING),-
62 ASN1_SIMPLE(int_dhvparams, counter, BIGNUM)-
63} static_ASN1_SEQUENCE_END_name(int_dhvparams, DHvparams)-
64-
65ASN1_SEQUENCE(DHxparams) = {-
66 ASN1_SIMPLE(int_dhx942_dh, p, BIGNUM),-
67 ASN1_SIMPLE(int_dhx942_dh, g, BIGNUM),-
68 ASN1_SIMPLE(int_dhx942_dh, q, BIGNUM),-
69 ASN1_OPT(int_dhx942_dh, j, BIGNUM),-
70 ASN1_OPT(int_dhx942_dh, vparams, DHvparams),-
71} static_ASN1_SEQUENCE_END_name(int_dhx942_dh, DHxparams)-
72-
73int_dhx942_dh *d2i_int_dhx(int_dhx942_dh **a,-
74 const unsigned char **pp, long length);-
75int i2d_int_dhx(const int_dhx942_dh *a, unsigned char **pp);-
76-
77IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(int_dhx942_dh, DHxparams, int_dhx)
executed 5506 times by 1 test: return (int_dhx942_dh *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, (&(DHxparams_it)));
Executed by:
  • libcrypto.so.1.1
executed 31 times by 1 test: return ASN1_item_i2d((ASN1_VALUE *)a, out, (&(DHxparams_it)));
Executed by:
  • libcrypto.so.1.1
31-5506
78-
79/* Application public function: read in X9.42 DH parameters into DH structure */-
80-
81DH *d2i_DHxparams(DH **a, const unsigned char **pp, long length)-
82{-
83 int_dhx942_dh *dhx = NULL;-
84 DH *dh = NULL;-
85 dh = DH_new();-
86 if (dh == NULL)
dh == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 5506 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-5506
87 return NULL;
never executed: return ((void *)0) ;
0
88 dhx = d2i_int_dhx(NULL, pp, length);-
89 if (dhx == NULL) {
dhx == ((void *)0)Description
TRUEevaluated 5175 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 331 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
331-5175
90 DH_free(dh);-
91 return NULL;
executed 5175 times by 1 test: return ((void *)0) ;
Executed by:
  • libcrypto.so.1.1
5175
92 }-
93-
94 if (a) {
aDescription
TRUEnever evaluated
FALSEevaluated 331 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-331
95 DH_free(*a);-
96 *a = dh;-
97 }
never executed: end of block
0
98-
99 dh->p = dhx->p;-
100 dh->q = dhx->q;-
101 dh->g = dhx->g;-
102 dh->j = dhx->j;-
103-
104 if (dhx->vparams) {
dhx->vparamsDescription
TRUEevaluated 15 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 316 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
15-316
105 dh->seed = dhx->vparams->seed->data;-
106 dh->seedlen = dhx->vparams->seed->length;-
107 dh->counter = dhx->vparams->counter;-
108 dhx->vparams->seed->data = NULL;-
109 ASN1_BIT_STRING_free(dhx->vparams->seed);-
110 OPENSSL_free(dhx->vparams);-
111 dhx->vparams = NULL;-
112 }
executed 15 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
15
113-
114 OPENSSL_free(dhx);-
115 return dh;
executed 331 times by 1 test: return dh;
Executed by:
  • libcrypto.so.1.1
331
116}-
117-
118int i2d_DHxparams(const DH *dh, unsigned char **pp)-
119{-
120 int_dhx942_dh dhx;-
121 int_dhvparams dhv;-
122 ASN1_BIT_STRING bs;-
123 dhx.p = dh->p;-
124 dhx.g = dh->g;-
125 dhx.q = dh->q;-
126 dhx.j = dh->j;-
127 if (dh->counter && dh->seed && dh->seedlen > 0) {
dh->counterDescription
TRUEevaluated 15 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 16 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
dh->seedDescription
TRUEevaluated 13 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 2 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
dh->seedlen > 0Description
TRUEevaluated 13 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-16
128 bs.flags = ASN1_STRING_FLAG_BITS_LEFT;-
129 bs.data = dh->seed;-
130 bs.length = dh->seedlen;-
131 dhv.seed = &bs;-
132 dhv.counter = dh->counter;-
133 dhx.vparams = &dhv;-
134 } else
executed 13 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
13
135 dhx.vparams = NULL;
executed 18 times by 1 test: dhx.vparams = ((void *)0) ;
Executed by:
  • libcrypto.so.1.1
18
136-
137 return i2d_int_dhx(&dhx, pp);
executed 31 times by 1 test: return i2d_int_dhx(&dhx, pp);
Executed by:
  • libcrypto.so.1.1
31
138}-
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