OpenCoverage

dsa_lib.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/dsa/dsa_lib.c
Source codeSwitch to Preprocessed file
LineSourceCount
1/*-
2 * Copyright 1995-2018 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 "internal/refcount.h"-
13#include <openssl/bn.h>-
14#include "dsa_locl.h"-
15#include <openssl/asn1.h>-
16#include <openssl/engine.h>-
17#include <openssl/dh.h>-
18-
19DSA *DSA_new(void)-
20{-
21 return DSA_new_method(NULL);
executed 15144 times by 1 test: return DSA_new_method( ((void *)0) );
Executed by:
  • libcrypto.so.1.1
15144
22}-
23-
24int DSA_set_method(DSA *dsa, const DSA_METHOD *meth)-
25{-
26 /*-
27 * NB: The caller is specifically setting a method, so it's not up to us-
28 * to deal with which ENGINE it comes from.-
29 */-
30 const DSA_METHOD *mtmp;-
31 mtmp = dsa->meth;-
32 if (mtmp->finish)
mtmp->finishDescription
TRUEnever evaluated
FALSEnever evaluated
0
33 mtmp->finish(dsa);
never executed: mtmp->finish(dsa);
0
34#ifndef OPENSSL_NO_ENGINE-
35 ENGINE_finish(dsa->engine);-
36 dsa->engine = NULL;-
37#endif-
38 dsa->meth = meth;-
39 if (meth->init)
meth->initDescription
TRUEnever evaluated
FALSEnever evaluated
0
40 meth->init(dsa);
never executed: meth->init(dsa);
0
41 return 1;
never executed: return 1;
0
42}-
43-
44const DSA_METHOD *DSA_get_method(DSA *d)-
45{-
46 return d->meth;
never executed: return d->meth;
0
47}-
48-
49DSA *DSA_new_method(ENGINE *engine)-
50{-
51 DSA *ret = OPENSSL_zalloc(sizeof(*ret));-
52-
53 if (ret == NULL) {
ret == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-15144
54 DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);-
55 return NULL;
never executed: return ((void *)0) ;
0
56 }-
57-
58 ret->references = 1;-
59 ret->lock = CRYPTO_THREAD_lock_new();-
60 if (ret->lock == NULL) {
ret->lock == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-15144
61 DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);-
62 OPENSSL_free(ret);-
63 return NULL;
never executed: return ((void *)0) ;
0
64 }-
65-
66 ret->meth = DSA_get_default_method();-
67#ifndef OPENSSL_NO_ENGINE-
68 ret->flags = ret->meth->flags & ~DSA_FLAG_NON_FIPS_ALLOW; /* early default init */-
69 if (engine) {
engineDescription
TRUEnever evaluated
FALSEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-15144
70 if (!ENGINE_init(engine)) {
!ENGINE_init(engine)Description
TRUEnever evaluated
FALSEnever evaluated
0
71 DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_ENGINE_LIB);-
72 goto err;
never executed: goto err;
0
73 }-
74 ret->engine = engine;-
75 } else
never executed: end of block
0
76 ret->engine = ENGINE_get_default_DSA();
executed 15144 times by 1 test: ret->engine = ENGINE_get_default_DSA();
Executed by:
  • libcrypto.so.1.1
15144
77 if (ret->engine) {
ret->engineDescription
TRUEnever evaluated
FALSEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-15144
78 ret->meth = ENGINE_get_DSA(ret->engine);-
79 if (ret->meth == NULL) {
ret->meth == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
80 DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_ENGINE_LIB);-
81 goto err;
never executed: goto err;
0
82 }-
83 }
never executed: end of block
0
84#endif-
85-
86 ret->flags = ret->meth->flags & ~DSA_FLAG_NON_FIPS_ALLOW;-
87-
88 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DSA, ret, &ret->ex_data))
!CRYPTO_new_ex...&ret->ex_data)Description
TRUEnever evaluated
FALSEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-15144
89 goto err;
never executed: goto err;
0
90-
91 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
(ret->meth->in... ((void *)0) )Description
TRUEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
!ret->meth->init(ret)Description
TRUEnever evaluated
FALSEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-15144
92 DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_INIT_FAIL);-
93 goto err;
never executed: goto err;
0
94 }-
95-
96 return ret;
executed 15144 times by 1 test: return ret;
Executed by:
  • libcrypto.so.1.1
15144
97-
98 err:-
99 DSA_free(ret);-
100 return NULL;
never executed: return ((void *)0) ;
0
101}-
102-
103void DSA_free(DSA *r)-
104{-
105 int i;-
106-
107 if (r == NULL)
r == ((void *)0)Description
TRUEevaluated 3658 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 17014 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
3658-17014
108 return;
executed 3658 times by 1 test: return;
Executed by:
  • libcrypto.so.1.1
3658
109-
110 CRYPTO_DOWN_REF(&r->references, &i, r->lock);-
111 REF_PRINT_COUNT("DSA", r);-
112 if (i > 0)
i > 0Description
TRUEevaluated 1870 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
1870-15144
113 return;
executed 1870 times by 1 test: return;
Executed by:
  • libcrypto.so.1.1
1870
114 REF_ASSERT_ISNT(i < 0);-
115-
116 if (r->meth != NULL && r->meth->finish != NULL)
r->meth != ((void *)0)Description
TRUEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
r->meth->finish != ((void *)0)Description
TRUEevaluated 15144 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-15144
117 r->meth->finish(r);
executed 15144 times by 1 test: r->meth->finish(r);
Executed by:
  • libcrypto.so.1.1
15144
118#ifndef OPENSSL_NO_ENGINE-
119 ENGINE_finish(r->engine);-
120#endif-
121-
122 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DSA, r, &r->ex_data);-
123-
124 CRYPTO_THREAD_lock_free(r->lock);-
125-
126 BN_clear_free(r->p);-
127 BN_clear_free(r->q);-
128 BN_clear_free(r->g);-
129 BN_clear_free(r->pub_key);-
130 BN_clear_free(r->priv_key);-
131 OPENSSL_free(r);-
132}
executed 15144 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
15144
133-
134int DSA_up_ref(DSA *r)-
135{-
136 int i;-
137-
138 if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
CRYPTO_UP_REF(... r->lock) <= 0Description
TRUEnever evaluated
FALSEevaluated 1870 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1870
139 return 0;
never executed: return 0;
0
140-
141 REF_PRINT_COUNT("DSA", r);-
142 REF_ASSERT_ISNT(i < 2);-
143 return ((i > 1) ? 1 : 0);
executed 1870 times by 1 test: return ((i > 1) ? 1 : 0);
Executed by:
  • libcrypto.so.1.1
(i > 1)Description
TRUEevaluated 1870 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-1870
144}-
145-
146int DSA_size(const DSA *r)-
147{-
148 int ret, i;-
149 ASN1_INTEGER bs;-
150 unsigned char buf[4]; /* 4 bytes looks really small. However,-
151 * i2d_ASN1_INTEGER() will not look beyond-
152 * the first byte, as long as the second-
153 * parameter is NULL. */-
154-
155 i = BN_num_bits(r->q);-
156 bs.length = (i + 7) / 8;-
157 bs.data = buf;-
158 bs.type = V_ASN1_INTEGER;-
159 /* If the top bit is set the asn1 encoding is 1 larger. */-
160 buf[0] = 0xff;-
161-
162 i = i2d_ASN1_INTEGER(&bs, NULL);-
163 i += i; /* r and s */-
164 ret = ASN1_object_size(1, i, V_ASN1_SEQUENCE);-
165 return ret;
executed 368 times by 1 test: return ret;
Executed by:
  • libcrypto.so.1.1
368
166}-
167-
168int DSA_set_ex_data(DSA *d, int idx, void *arg)-
169{-
170 return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
never executed: return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
0
171}-
172-
173void *DSA_get_ex_data(DSA *d, int idx)-
174{-
175 return CRYPTO_get_ex_data(&d->ex_data, idx);
never executed: return CRYPTO_get_ex_data(&d->ex_data, idx);
0
176}-
177-
178int DSA_security_bits(const DSA *d)-
179{-
180 if (d->p && d->q)
d->pDescription
TRUEevaluated 2017 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
d->qDescription
TRUEevaluated 2017 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-2017
181 return BN_security_bits(BN_num_bits(d->p), BN_num_bits(d->q));
executed 2017 times by 1 test: return BN_security_bits(BN_num_bits(d->p), BN_num_bits(d->q));
Executed by:
  • libcrypto.so.1.1
2017
182 return -1;
never executed: return -1;
0
183}-
184-
185#ifndef OPENSSL_NO_DH-
186DH *DSA_dup_DH(const DSA *r)-
187{-
188 /*-
189 * DSA has p, q, g, optional pub_key, optional priv_key. DH has p,-
190 * optional length, g, optional pub_key, optional priv_key, optional q.-
191 */-
192-
193 DH *ret = NULL;-
194 BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL, *priv_key = NULL;-
195-
196 if (r == NULL)
r == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
197 goto err;
never executed: goto err;
0
198 ret = DH_new();-
199 if (ret == NULL)
ret == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
200 goto err;
never executed: goto err;
0
201 if (r->p != NULL || r->g != NULL || r->q != NULL) {
r->p != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
r->g != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
r->q != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
202 if (r->p == NULL || r->g == NULL || r->q == NULL) {
r->p == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
r->g == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
r->q == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
203 /* Shouldn't happen */-
204 goto err;
never executed: goto err;
0
205 }-
206 p = BN_dup(r->p);-
207 g = BN_dup(r->g);-
208 q = BN_dup(r->q);-
209 if (p == NULL || g == NULL || q == NULL || !DH_set0_pqg(ret, p, q, g))
p == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
g == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
q == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
!DH_set0_pqg(ret, p, q, g)Description
TRUEnever evaluated
FALSEnever evaluated
0
210 goto err;
never executed: goto err;
0
211 p = g = q = NULL;-
212 }
never executed: end of block
0
213-
214 if (r->pub_key != NULL) {
r->pub_key != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
215 pub_key = BN_dup(r->pub_key);-
216 if (pub_key == NULL)
pub_key == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
217 goto err;
never executed: goto err;
0
218 if (r->priv_key != NULL) {
r->priv_key != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
219 priv_key = BN_dup(r->priv_key);-
220 if (priv_key == NULL)
priv_key == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
221 goto err;
never executed: goto err;
0
222 }
never executed: end of block
0
223 if (!DH_set0_key(ret, pub_key, priv_key))
!DH_set0_key(r...key, priv_key)Description
TRUEnever evaluated
FALSEnever evaluated
0
224 goto err;
never executed: goto err;
0
225 } else if (r->priv_key != NULL) {
never executed: end of block
r->priv_key != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
226 /* Shouldn't happen */-
227 goto err;
never executed: goto err;
0
228 }-
229-
230 return ret;
never executed: return ret;
0
231-
232 err:-
233 BN_free(p);-
234 BN_free(g);-
235 BN_free(q);-
236 BN_free(pub_key);-
237 BN_free(priv_key);-
238 DH_free(ret);-
239 return NULL;
never executed: return ((void *)0) ;
0
240}-
241#endif-
242-
243void DSA_get0_pqg(const DSA *d,-
244 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)-
245{-
246 if (p != NULL)
p != ((void *)0)Description
TRUEevaluated 10 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-10
247 *p = d->p;
executed 10 times by 1 test: *p = d->p;
Executed by:
  • libcrypto.so.1.1
10
248 if (q != NULL)
q != ((void *)0)Description
TRUEevaluated 9 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
1-9
249 *q = d->q;
executed 9 times by 1 test: *q = d->q;
Executed by:
  • libcrypto.so.1.1
9
250 if (g != NULL)
g != ((void *)0)Description
TRUEevaluated 9 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 1 time by 1 test
Evaluated by:
  • libcrypto.so.1.1
1-9
251 *g = d->g;
executed 9 times by 1 test: *g = d->g;
Executed by:
  • libcrypto.so.1.1
9
252}
executed 10 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
10
253-
254int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)-
255{-
256 /* If the fields p, q and g in d are NULL, the corresponding input-
257 * parameters MUST be non-NULL.-
258 */-
259 if ((d->p == NULL && p == NULL)
d->p == ((void *)0)Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
p == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-4
260 || (d->q == NULL && q == NULL)
d->q == ((void *)0)Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
q == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-4
261 || (d->g == NULL && g == NULL))
d->g == ((void *)0)Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
g == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-4
262 return 0;
never executed: return 0;
0
263-
264 if (p != NULL) {
p != ((void *)0)Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-4
265 BN_free(d->p);-
266 d->p = p;-
267 }
executed 4 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
4
268 if (q != NULL) {
q != ((void *)0)Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-4
269 BN_free(d->q);-
270 d->q = q;-
271 }
executed 4 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
4
272 if (g != NULL) {
g != ((void *)0)Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-4
273 BN_free(d->g);-
274 d->g = g;-
275 }
executed 4 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
4
276-
277 return 1;
executed 4 times by 1 test: return 1;
Executed by:
  • libcrypto.so.1.1
4
278}-
279-
280void DSA_get0_key(const DSA *d,-
281 const BIGNUM **pub_key, const BIGNUM **priv_key)-
282{-
283 if (pub_key != NULL)
pub_key != ((void *)0)Description
TRUEevaluated 8 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-8
284 *pub_key = d->pub_key;
executed 8 times by 1 test: *pub_key = d->pub_key;
Executed by:
  • libcrypto.so.1.1
8
285 if (priv_key != NULL)
priv_key != ((void *)0)Description
TRUEevaluated 8 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-8
286 *priv_key = d->priv_key;
executed 8 times by 1 test: *priv_key = d->priv_key;
Executed by:
  • libcrypto.so.1.1
8
287}
executed 8 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
8
288-
289int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)-
290{-
291 /* If the field pub_key in d is NULL, the corresponding input-
292 * parameters MUST be non-NULL. The priv_key field may-
293 * be left NULL.-
294 */-
295 if (d->pub_key == NULL && pub_key == NULL)
d->pub_key == ((void *)0)Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
pub_key == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 3 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-3
296 return 0;
never executed: return 0;
0
297-
298 if (pub_key != NULL) {
pub_key != ((void *)0)Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEnever evaluated
0-3
299 BN_free(d->pub_key);-
300 d->pub_key = pub_key;-
301 }
executed 3 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
3
302 if (priv_key != NULL) {
priv_key != ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 3 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-3
303 BN_free(d->priv_key);-
304 d->priv_key = priv_key;-
305 }
never executed: end of block
0
306-
307 return 1;
executed 3 times by 1 test: return 1;
Executed by:
  • libcrypto.so.1.1
3
308}-
309-
310const BIGNUM *DSA_get0_p(const DSA *d)-
311{-
312 return d->p;
never executed: return d->p;
0
313}-
314-
315const BIGNUM *DSA_get0_q(const DSA *d)-
316{-
317 return d->q;
executed 6 times by 1 test: return d->q;
Executed by:
  • libcrypto.so.1.1
6
318}-
319-
320const BIGNUM *DSA_get0_g(const DSA *d)-
321{-
322 return d->g;
never executed: return d->g;
0
323}-
324-
325const BIGNUM *DSA_get0_pub_key(const DSA *d)-
326{-
327 return d->pub_key;
never executed: return d->pub_key;
0
328}-
329-
330const BIGNUM *DSA_get0_priv_key(const DSA *d)-
331{-
332 return d->priv_key;
never executed: return d->priv_key;
0
333}-
334-
335void DSA_clear_flags(DSA *d, int flags)-
336{-
337 d->flags &= ~flags;-
338}
never executed: end of block
0
339-
340int DSA_test_flags(const DSA *d, int flags)-
341{-
342 return d->flags & flags;
never executed: return d->flags & flags;
0
343}-
344-
345void DSA_set_flags(DSA *d, int flags)-
346{-
347 d->flags |= flags;-
348}
never executed: end of block
0
349-
350ENGINE *DSA_get0_engine(DSA *d)-
351{-
352 return d->engine;
never executed: return d->engine;
0
353}-
354-
355int DSA_bits(const DSA *dsa)-
356{-
357 return BN_num_bits(dsa->p);
executed 18 times by 1 test: return BN_num_bits(dsa->p);
Executed by:
  • libcrypto.so.1.1
18
358}-
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