OpenCoverage

ec_kmeth.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/ec/ec_kmeth.c
Source codeSwitch to Preprocessed file
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1/*-
2 * Copyright 2015-2018 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 <string.h>-
11#include <openssl/ec.h>-
12#include <openssl/engine.h>-
13#include <openssl/err.h>-
14#include "ec_lcl.h"-
15-
16-
17static const EC_KEY_METHOD openssl_ec_key_method = {-
18 "OpenSSL EC_KEY method",-
19 0,-
20 0,0,0,0,0,0,-
21 ossl_ec_key_gen,-
22 ossl_ecdh_compute_key,-
23 ossl_ecdsa_sign,-
24 ossl_ecdsa_sign_setup,-
25 ossl_ecdsa_sign_sig,-
26 ossl_ecdsa_verify,-
27 ossl_ecdsa_verify_sig-
28};-
29-
30static const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;-
31-
32const EC_KEY_METHOD *EC_KEY_OpenSSL(void)-
33{-
34 return &openssl_ec_key_method;
never executed: return &openssl_ec_key_method;
0
35}-
36-
37const EC_KEY_METHOD *EC_KEY_get_default_method(void)-
38{-
39 return default_ec_key_meth;
executed 41090 times by 2 tests: return default_ec_key_meth;
Executed by:
  • libcrypto.so.1.1
  • sm2_internal_test
41090
40}-
41-
42void EC_KEY_set_default_method(const EC_KEY_METHOD *meth)-
43{-
44 if (meth == NULL)
meth == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
45 default_ec_key_meth = &openssl_ec_key_method;
never executed: default_ec_key_meth = &openssl_ec_key_method;
0
46 else-
47 default_ec_key_meth = meth;
never executed: default_ec_key_meth = meth;
0
48}-
49-
50const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key)-
51{-
52 return key->meth;
never executed: return key->meth;
0
53}-
54-
55int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth)-
56{-
57 void (*finish)(EC_KEY *key) = key->meth->finish;-
58-
59 if (finish != NULL)
finish != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
60 finish(key);
never executed: finish(key);
0
61-
62#ifndef OPENSSL_NO_ENGINE-
63 ENGINE_finish(key->engine);-
64 key->engine = NULL;-
65#endif-
66-
67 key->meth = meth;-
68 if (meth->init != NULL)
meth->init != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
69 return meth->init(key);
never executed: return meth->init(key);
0
70 return 1;
never executed: return 1;
0
71}-
72-
73EC_KEY *EC_KEY_new_method(ENGINE *engine)-
74{-
75 EC_KEY *ret = OPENSSL_zalloc(sizeof(*ret));-
76-
77 if (ret == NULL) {
ret == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 41090 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm2_internal_test
0-41090
78 ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_MALLOC_FAILURE);-
79 return NULL;
never executed: return ((void *)0) ;
0
80 }-
81-
82 ret->references = 1;-
83 ret->lock = CRYPTO_THREAD_lock_new();-
84 if (ret->lock == NULL) {
ret->lock == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 41090 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm2_internal_test
0-41090
85 ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_MALLOC_FAILURE);-
86 OPENSSL_free(ret);-
87 return NULL;
never executed: return ((void *)0) ;
0
88 }-
89-
90 ret->meth = EC_KEY_get_default_method();-
91#ifndef OPENSSL_NO_ENGINE-
92 if (engine != NULL) {
engine != ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 41090 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm2_internal_test
0-41090
93 if (!ENGINE_init(engine)) {
!ENGINE_init(engine)Description
TRUEnever evaluated
FALSEnever evaluated
0
94 ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);-
95 goto err;
never executed: goto err;
0
96 }-
97 ret->engine = engine;-
98 } else
never executed: end of block
0
99 ret->engine = ENGINE_get_default_EC();
executed 41090 times by 2 tests: ret->engine = ENGINE_get_default_EC();
Executed by:
  • libcrypto.so.1.1
  • sm2_internal_test
41090
100 if (ret->engine != NULL) {
ret->engine != ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 41090 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm2_internal_test
0-41090
101 ret->meth = ENGINE_get_EC(ret->engine);-
102 if (ret->meth == NULL) {
ret->meth == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
103 ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);-
104 goto err;
never executed: goto err;
0
105 }-
106 }
never executed: end of block
0
107#endif-
108-
109 ret->version = 1;-
110 ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;-
111-
112 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data)) {
!CRYPTO_new_ex...&ret->ex_data)Description
TRUEnever evaluated
FALSEevaluated 41090 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm2_internal_test
0-41090
113 goto err;
never executed: goto err;
0
114 }-
115-
116 if (ret->meth->init != NULL && ret->meth->init(ret) == 0) {
ret->meth->init != ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 41090 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm2_internal_test
ret->meth->init(ret) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0-41090
117 ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_INIT_FAIL);-
118 goto err;
never executed: goto err;
0
119 }-
120 return ret;
executed 41090 times by 2 tests: return ret;
Executed by:
  • libcrypto.so.1.1
  • sm2_internal_test
41090
121-
122 err:-
123 EC_KEY_free(ret);-
124 return NULL;
never executed: return ((void *)0) ;
0
125}-
126-
127int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,-
128 const EC_KEY *eckey,-
129 void *(*KDF) (const void *in, size_t inlen, void *out,-
130 size_t *outlen))-
131{-
132 unsigned char *sec = NULL;-
133 size_t seclen;-
134 if (eckey->meth->compute_key == NULL) {
eckey->meth->c...== ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1213 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1213
135 ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_OPERATION_NOT_SUPPORTED);-
136 return 0;
never executed: return 0;
0
137 }-
138 if (outlen > INT_MAX) {
outlen > 0x7fffffffDescription
TRUEnever evaluated
FALSEevaluated 1213 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1213
139 ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_INVALID_OUTPUT_LENGTH);-
140 return 0;
never executed: return 0;
0
141 }-
142 if (!eckey->meth->compute_key(&sec, &seclen, pub_key, eckey))
!eckey->meth->...ub_key, eckey)Description
TRUEevaluated 93 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 1120 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
93-1120
143 return 0;
executed 93 times by 1 test: return 0;
Executed by:
  • libcrypto.so.1.1
93
144 if (KDF != NULL) {
KDF != ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1120 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1120
145 KDF(sec, seclen, out, &outlen);-
146 } else {
never executed: end of block
0
147 if (outlen > seclen)
outlen > seclenDescription
TRUEnever evaluated
FALSEevaluated 1120 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1120
148 outlen = seclen;
never executed: outlen = seclen;
0
149 memcpy(out, sec, outlen);-
150 }
executed 1120 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
1120
151 OPENSSL_clear_free(sec, seclen);-
152 return outlen;
executed 1120 times by 1 test: return outlen;
Executed by:
  • libcrypto.so.1.1
1120
153}-
154-
155EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth)-
156{-
157 EC_KEY_METHOD *ret = OPENSSL_zalloc(sizeof(*meth));-
158-
159 if (ret == NULL)
ret == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
160 return NULL;
never executed: return ((void *)0) ;
0
161 if (meth != NULL)
meth != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
162 *ret = *meth;
never executed: *ret = *meth;
0
163 ret->flags |= EC_KEY_METHOD_DYNAMIC;-
164 return ret;
never executed: return ret;
0
165}-
166-
167void EC_KEY_METHOD_free(EC_KEY_METHOD *meth)-
168{-
169 if (meth->flags & EC_KEY_METHOD_DYNAMIC)
meth->flags & 1Description
TRUEnever evaluated
FALSEnever evaluated
0
170 OPENSSL_free(meth);
never executed: CRYPTO_free(meth, __FILE__, 170);
0
171}
never executed: end of block
0
172-
173void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,-
174 int (*init)(EC_KEY *key),-
175 void (*finish)(EC_KEY *key),-
176 int (*copy)(EC_KEY *dest, const EC_KEY *src),-
177 int (*set_group)(EC_KEY *key, const EC_GROUP *grp),-
178 int (*set_private)(EC_KEY *key,-
179 const BIGNUM *priv_key),-
180 int (*set_public)(EC_KEY *key,-
181 const EC_POINT *pub_key))-
182{-
183 meth->init = init;-
184 meth->finish = finish;-
185 meth->copy = copy;-
186 meth->set_group = set_group;-
187 meth->set_private = set_private;-
188 meth->set_public = set_public;-
189}
never executed: end of block
0
190-
191void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,-
192 int (*keygen)(EC_KEY *key))-
193{-
194 meth->keygen = keygen;-
195}
never executed: end of block
0
196-
197void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,-
198 int (*ckey)(unsigned char **psec,-
199 size_t *pseclen,-
200 const EC_POINT *pub_key,-
201 const EC_KEY *ecdh))-
202{-
203 meth->compute_key = ckey;-
204}
never executed: end of block
0
205-
206void EC_KEY_METHOD_set_sign(EC_KEY_METHOD *meth,-
207 int (*sign)(int type, const unsigned char *dgst,-
208 int dlen, unsigned char *sig,-
209 unsigned int *siglen,-
210 const BIGNUM *kinv, const BIGNUM *r,-
211 EC_KEY *eckey),-
212 int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,-
213 BIGNUM **kinvp, BIGNUM **rp),-
214 ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,-
215 int dgst_len,-
216 const BIGNUM *in_kinv,-
217 const BIGNUM *in_r,-
218 EC_KEY *eckey))-
219{-
220 meth->sign = sign;-
221 meth->sign_setup = sign_setup;-
222 meth->sign_sig = sign_sig;-
223}
never executed: end of block
0
224-
225void EC_KEY_METHOD_set_verify(EC_KEY_METHOD *meth,-
226 int (*verify)(int type, const unsigned-
227 char *dgst, int dgst_len,-
228 const unsigned char *sigbuf,-
229 int sig_len, EC_KEY *eckey),-
230 int (*verify_sig)(const unsigned char *dgst,-
231 int dgst_len,-
232 const ECDSA_SIG *sig,-
233 EC_KEY *eckey))-
234{-
235 meth->verify = verify;-
236 meth->verify_sig = verify_sig;-
237}
never executed: end of block
0
238-
239void EC_KEY_METHOD_get_init(const EC_KEY_METHOD *meth,-
240 int (**pinit)(EC_KEY *key),-
241 void (**pfinish)(EC_KEY *key),-
242 int (**pcopy)(EC_KEY *dest, const EC_KEY *src),-
243 int (**pset_group)(EC_KEY *key,-
244 const EC_GROUP *grp),-
245 int (**pset_private)(EC_KEY *key,-
246 const BIGNUM *priv_key),-
247 int (**pset_public)(EC_KEY *key,-
248 const EC_POINT *pub_key))-
249{-
250 if (pinit != NULL)
pinit != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
251 *pinit = meth->init;
never executed: *pinit = meth->init;
0
252 if (pfinish != NULL)
pfinish != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
253 *pfinish = meth->finish;
never executed: *pfinish = meth->finish;
0
254 if (pcopy != NULL)
pcopy != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
255 *pcopy = meth->copy;
never executed: *pcopy = meth->copy;
0
256 if (pset_group != NULL)
pset_group != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
257 *pset_group = meth->set_group;
never executed: *pset_group = meth->set_group;
0
258 if (pset_private != NULL)
pset_private != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
259 *pset_private = meth->set_private;
never executed: *pset_private = meth->set_private;
0
260 if (pset_public != NULL)
pset_public != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
261 *pset_public = meth->set_public;
never executed: *pset_public = meth->set_public;
0
262}
never executed: end of block
0
263-
264void EC_KEY_METHOD_get_keygen(const EC_KEY_METHOD *meth,-
265 int (**pkeygen)(EC_KEY *key))-
266{-
267 if (pkeygen != NULL)
pkeygen != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
268 *pkeygen = meth->keygen;
never executed: *pkeygen = meth->keygen;
0
269}
never executed: end of block
0
270-
271void EC_KEY_METHOD_get_compute_key(const EC_KEY_METHOD *meth,-
272 int (**pck)(unsigned char **pout,-
273 size_t *poutlen,-
274 const EC_POINT *pub_key,-
275 const EC_KEY *ecdh))-
276{-
277 if (pck != NULL)
pck != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
278 *pck = meth->compute_key;
never executed: *pck = meth->compute_key;
0
279}
never executed: end of block
0
280-
281void EC_KEY_METHOD_get_sign(const EC_KEY_METHOD *meth,-
282 int (**psign)(int type, const unsigned char *dgst,-
283 int dlen, unsigned char *sig,-
284 unsigned int *siglen,-
285 const BIGNUM *kinv, const BIGNUM *r,-
286 EC_KEY *eckey),-
287 int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,-
288 BIGNUM **kinvp, BIGNUM **rp),-
289 ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,-
290 int dgst_len,-
291 const BIGNUM *in_kinv,-
292 const BIGNUM *in_r,-
293 EC_KEY *eckey))-
294{-
295 if (psign != NULL)
psign != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
296 *psign = meth->sign;
never executed: *psign = meth->sign;
0
297 if (psign_setup != NULL)
psign_setup != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
298 *psign_setup = meth->sign_setup;
never executed: *psign_setup = meth->sign_setup;
0
299 if (psign_sig != NULL)
psign_sig != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
300 *psign_sig = meth->sign_sig;
never executed: *psign_sig = meth->sign_sig;
0
301}
never executed: end of block
0
302-
303void EC_KEY_METHOD_get_verify(const EC_KEY_METHOD *meth,-
304 int (**pverify)(int type, const unsigned-
305 char *dgst, int dgst_len,-
306 const unsigned char *sigbuf,-
307 int sig_len, EC_KEY *eckey),-
308 int (**pverify_sig)(const unsigned char *dgst,-
309 int dgst_len,-
310 const ECDSA_SIG *sig,-
311 EC_KEY *eckey))-
312{-
313 if (pverify != NULL)
pverify != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
314 *pverify = meth->verify;
never executed: *pverify = meth->verify;
0
315 if (pverify_sig != NULL)
pverify_sig != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
316 *pverify_sig = meth->verify_sig;
never executed: *pverify_sig = meth->verify_sig;
0
317}
never executed: end of block
0
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