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-rw-r--r--src/lib/libcrypto/ec/ec_pmeth.c185
1 files changed, 89 insertions, 96 deletions
diff --git a/src/lib/libcrypto/ec/ec_pmeth.c b/src/lib/libcrypto/ec/ec_pmeth.c
index c970d8c9ca..28f501070c 100644
--- a/src/lib/libcrypto/ec/ec_pmeth.c
+++ b/src/lib/libcrypto/ec/ec_pmeth.c
@@ -9,7 +9,7 @@
9 * are met: 9 * are met:
10 * 10 *
11 * 1. Redistributions of source code must retain the above copyright 11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer. 12 * notice, this list of conditions and the following disclaimer.
13 * 13 *
14 * 2. Redistributions in binary form must reproduce the above copyright 14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in 15 * notice, this list of conditions and the following disclaimer in
@@ -66,16 +66,16 @@
66 66
67/* EC pkey context structure */ 67/* EC pkey context structure */
68 68
69typedef struct 69typedef struct {
70 {
71 /* Key and paramgen group */ 70 /* Key and paramgen group */
72 EC_GROUP *gen_group; 71 EC_GROUP *gen_group;
73 /* message digest */ 72 /* message digest */
74 const EVP_MD *md; 73 const EVP_MD *md;
75 } EC_PKEY_CTX; 74} EC_PKEY_CTX;
76 75
77static int pkey_ec_init(EVP_PKEY_CTX *ctx) 76static int
78 { 77pkey_ec_init(EVP_PKEY_CTX * ctx)
78{
79 EC_PKEY_CTX *dctx; 79 EC_PKEY_CTX *dctx;
80 dctx = malloc(sizeof(EC_PKEY_CTX)); 80 dctx = malloc(sizeof(EC_PKEY_CTX));
81 if (!dctx) 81 if (!dctx)
@@ -86,55 +86,52 @@ static int pkey_ec_init(EVP_PKEY_CTX *ctx)
86 ctx->data = dctx; 86 ctx->data = dctx;
87 87
88 return 1; 88 return 1;
89 } 89}
90 90
91static int pkey_ec_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) 91static int
92 { 92pkey_ec_copy(EVP_PKEY_CTX * dst, EVP_PKEY_CTX * src)
93{
93 EC_PKEY_CTX *dctx, *sctx; 94 EC_PKEY_CTX *dctx, *sctx;
94 if (!pkey_ec_init(dst)) 95 if (!pkey_ec_init(dst))
95 return 0; 96 return 0;
96 sctx = src->data; 97 sctx = src->data;
97 dctx = dst->data; 98 dctx = dst->data;
98 if (sctx->gen_group) 99 if (sctx->gen_group) {
99 {
100 dctx->gen_group = EC_GROUP_dup(sctx->gen_group); 100 dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
101 if (!dctx->gen_group) 101 if (!dctx->gen_group)
102 return 0; 102 return 0;
103 } 103 }
104 dctx->md = sctx->md; 104 dctx->md = sctx->md;
105 return 1; 105 return 1;
106 } 106}
107 107
108static void pkey_ec_cleanup(EVP_PKEY_CTX *ctx) 108static void
109 { 109pkey_ec_cleanup(EVP_PKEY_CTX * ctx)
110{
110 EC_PKEY_CTX *dctx = ctx->data; 111 EC_PKEY_CTX *dctx = ctx->data;
111 if (dctx) 112 if (dctx) {
112 {
113 if (dctx->gen_group) 113 if (dctx->gen_group)
114 EC_GROUP_free(dctx->gen_group); 114 EC_GROUP_free(dctx->gen_group);
115 free(dctx); 115 free(dctx);
116 }
117 } 116 }
117}
118 118
119static int pkey_ec_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, 119static int
120 const unsigned char *tbs, size_t tbslen) 120pkey_ec_sign(EVP_PKEY_CTX * ctx, unsigned char *sig, size_t * siglen,
121 { 121 const unsigned char *tbs, size_t tbslen)
122{
122 int ret, type; 123 int ret, type;
123 unsigned int sltmp; 124 unsigned int sltmp;
124 EC_PKEY_CTX *dctx = ctx->data; 125 EC_PKEY_CTX *dctx = ctx->data;
125 EC_KEY *ec = ctx->pkey->pkey.ec; 126 EC_KEY *ec = ctx->pkey->pkey.ec;
126 127
127 if (!sig) 128 if (!sig) {
128 {
129 *siglen = ECDSA_size(ec); 129 *siglen = ECDSA_size(ec);
130 return 1; 130 return 1;
131 } 131 } else if (*siglen < (size_t) ECDSA_size(ec)) {
132 else if(*siglen < (size_t)ECDSA_size(ec))
133 {
134 ECerr(EC_F_PKEY_EC_SIGN, EC_R_BUFFER_TOO_SMALL); 132 ECerr(EC_F_PKEY_EC_SIGN, EC_R_BUFFER_TOO_SMALL);
135 return 0; 133 return 0;
136 } 134 }
137
138 if (dctx->md) 135 if (dctx->md)
139 type = EVP_MD_type(dctx->md); 136 type = EVP_MD_type(dctx->md);
140 else 137 else
@@ -145,14 +142,15 @@ static int pkey_ec_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
145 142
146 if (ret <= 0) 143 if (ret <= 0)
147 return ret; 144 return ret;
148 *siglen = (size_t)sltmp; 145 *siglen = (size_t) sltmp;
149 return 1; 146 return 1;
150 } 147}
151 148
152static int pkey_ec_verify(EVP_PKEY_CTX *ctx, 149static int
153 const unsigned char *sig, size_t siglen, 150pkey_ec_verify(EVP_PKEY_CTX * ctx,
154 const unsigned char *tbs, size_t tbslen) 151 const unsigned char *sig, size_t siglen,
155 { 152 const unsigned char *tbs, size_t tbslen)
153{
156 int ret, type; 154 int ret, type;
157 EC_PKEY_CTX *dctx = ctx->data; 155 EC_PKEY_CTX *dctx = ctx->data;
158 EC_KEY *ec = ctx->pkey->pkey.ec; 156 EC_KEY *ec = ctx->pkey->pkey.ec;
@@ -165,116 +163,111 @@ static int pkey_ec_verify(EVP_PKEY_CTX *ctx,
165 ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec); 163 ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec);
166 164
167 return ret; 165 return ret;
168 } 166}
169 167
170static int pkey_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen) 168static int
171 { 169pkey_ec_derive(EVP_PKEY_CTX * ctx, unsigned char *key, size_t * keylen)
170{
172 int ret; 171 int ret;
173 size_t outlen; 172 size_t outlen;
174 const EC_POINT *pubkey = NULL; 173 const EC_POINT *pubkey = NULL;
175 if (!ctx->pkey || !ctx->peerkey) 174 if (!ctx->pkey || !ctx->peerkey) {
176 {
177 ECerr(EC_F_PKEY_EC_DERIVE, EC_R_KEYS_NOT_SET); 175 ECerr(EC_F_PKEY_EC_DERIVE, EC_R_KEYS_NOT_SET);
178 return 0; 176 return 0;
179 } 177 }
180 178 if (!key) {
181 if (!key)
182 {
183 const EC_GROUP *group; 179 const EC_GROUP *group;
184 group = EC_KEY_get0_group(ctx->pkey->pkey.ec); 180 group = EC_KEY_get0_group(ctx->pkey->pkey.ec);
185 *keylen = (EC_GROUP_get_degree(group) + 7)/8; 181 *keylen = (EC_GROUP_get_degree(group) + 7) / 8;
186 return 1; 182 return 1;
187 } 183 }
188
189 pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec); 184 pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
190 185
191 /* NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is 186 /*
187 * NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is
192 * not an error, the result is truncated. 188 * not an error, the result is truncated.
193 */ 189 */
194 190
195 outlen = *keylen; 191 outlen = *keylen;
196 192
197 ret = ECDH_compute_key(key, outlen, pubkey, ctx->pkey->pkey.ec, 0); 193 ret = ECDH_compute_key(key, outlen, pubkey, ctx->pkey->pkey.ec, 0);
198 if (ret < 0) 194 if (ret < 0)
199 return ret; 195 return ret;
200 *keylen = ret; 196 *keylen = ret;
201 return 1; 197 return 1;
202 } 198}
203 199
204static int pkey_ec_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) 200static int
205 { 201pkey_ec_ctrl(EVP_PKEY_CTX * ctx, int type, int p1, void *p2)
202{
206 EC_PKEY_CTX *dctx = ctx->data; 203 EC_PKEY_CTX *dctx = ctx->data;
207 EC_GROUP *group; 204 EC_GROUP *group;
208 switch (type) 205 switch (type) {
209 { 206 case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
210 case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
211 group = EC_GROUP_new_by_curve_name(p1); 207 group = EC_GROUP_new_by_curve_name(p1);
212 if (group == NULL) 208 if (group == NULL) {
213 {
214 ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_CURVE); 209 ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_CURVE);
215 return 0; 210 return 0;
216 } 211 }
217 if (dctx->gen_group) 212 if (dctx->gen_group)
218 EC_GROUP_free(dctx->gen_group); 213 EC_GROUP_free(dctx->gen_group);
219 dctx->gen_group = group; 214 dctx->gen_group = group;
220 return 1; 215 return 1;
221 216
222 case EVP_PKEY_CTRL_MD: 217 case EVP_PKEY_CTRL_MD:
223 if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 && 218 if (EVP_MD_type((const EVP_MD *) p2) != NID_sha1 &&
224 EVP_MD_type((const EVP_MD *)p2) != NID_ecdsa_with_SHA1 && 219 EVP_MD_type((const EVP_MD *) p2) != NID_ecdsa_with_SHA1 &&
225 EVP_MD_type((const EVP_MD *)p2) != NID_sha224 && 220 EVP_MD_type((const EVP_MD *) p2) != NID_sha224 &&
226 EVP_MD_type((const EVP_MD *)p2) != NID_sha256 && 221 EVP_MD_type((const EVP_MD *) p2) != NID_sha256 &&
227 EVP_MD_type((const EVP_MD *)p2) != NID_sha384 && 222 EVP_MD_type((const EVP_MD *) p2) != NID_sha384 &&
228 EVP_MD_type((const EVP_MD *)p2) != NID_sha512) 223 EVP_MD_type((const EVP_MD *) p2) != NID_sha512) {
229 {
230 ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_DIGEST_TYPE); 224 ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_DIGEST_TYPE);
231 return 0; 225 return 0;
232 } 226 }
233 dctx->md = p2; 227 dctx->md = p2;
234 return 1; 228 return 1;
235 229
236 case EVP_PKEY_CTRL_PEER_KEY: 230 case EVP_PKEY_CTRL_PEER_KEY:
237 /* Default behaviour is OK */ 231 /* Default behaviour is OK */
238 case EVP_PKEY_CTRL_DIGESTINIT: 232 case EVP_PKEY_CTRL_DIGESTINIT:
239 case EVP_PKEY_CTRL_PKCS7_SIGN: 233 case EVP_PKEY_CTRL_PKCS7_SIGN:
240 case EVP_PKEY_CTRL_CMS_SIGN: 234 case EVP_PKEY_CTRL_CMS_SIGN:
241 return 1; 235 return 1;
242 236
243 default: 237 default:
244 return -2; 238 return -2;
245 239
246 }
247 } 240 }
248 241}
249static int pkey_ec_ctrl_str(EVP_PKEY_CTX *ctx, 242
250 const char *type, const char *value) 243static int
251 { 244pkey_ec_ctrl_str(EVP_PKEY_CTX * ctx,
252 if (!strcmp(type, "ec_paramgen_curve")) 245 const char *type, const char *value)
253 { 246{
247 if (!strcmp(type, "ec_paramgen_curve")) {
254 int nid; 248 int nid;
255 nid = OBJ_sn2nid(value); 249 nid = OBJ_sn2nid(value);
256 if (nid == NID_undef) 250 if (nid == NID_undef)
257 nid = OBJ_ln2nid(value); 251 nid = OBJ_ln2nid(value);
258 if (nid == NID_undef) 252 if (nid == NID_undef) {
259 {
260 ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE); 253 ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
261 return 0; 254 return 0;
262 }
263 return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
264 } 255 }
265 return -2; 256 return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
266 } 257 }
258 return -2;
259}
267 260
268static int pkey_ec_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) 261static int
269 { 262pkey_ec_paramgen(EVP_PKEY_CTX * ctx, EVP_PKEY * pkey)
263{
270 EC_KEY *ec = NULL; 264 EC_KEY *ec = NULL;
271 EC_PKEY_CTX *dctx = ctx->data; 265 EC_PKEY_CTX *dctx = ctx->data;
272 int ret = 0; 266 int ret = 0;
273 if (dctx->gen_group == NULL) 267 if (dctx->gen_group == NULL) {
274 {
275 ECerr(EC_F_PKEY_EC_PARAMGEN, EC_R_NO_PARAMETERS_SET); 268 ECerr(EC_F_PKEY_EC_PARAMGEN, EC_R_NO_PARAMETERS_SET);
276 return 0; 269 return 0;
277 } 270 }
278 ec = EC_KEY_new(); 271 ec = EC_KEY_new();
279 if (!ec) 272 if (!ec)
280 return 0; 273 return 0;
@@ -284,16 +277,16 @@ static int pkey_ec_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
284 else 277 else
285 EC_KEY_free(ec); 278 EC_KEY_free(ec);
286 return ret; 279 return ret;
287 } 280}
288 281
289static int pkey_ec_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) 282static int
290 { 283pkey_ec_keygen(EVP_PKEY_CTX * ctx, EVP_PKEY * pkey)
284{
291 EC_KEY *ec = NULL; 285 EC_KEY *ec = NULL;
292 if (ctx->pkey == NULL) 286 if (ctx->pkey == NULL) {
293 {
294 ECerr(EC_F_PKEY_EC_KEYGEN, EC_R_NO_PARAMETERS_SET); 287 ECerr(EC_F_PKEY_EC_KEYGEN, EC_R_NO_PARAMETERS_SET);
295 return 0; 288 return 0;
296 } 289 }
297 ec = EC_KEY_new(); 290 ec = EC_KEY_new();
298 if (!ec) 291 if (!ec)
299 return 0; 292 return 0;
@@ -302,7 +295,7 @@ static int pkey_ec_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
302 if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey)) 295 if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
303 return 0; 296 return 0;
304 return EC_KEY_generate_key(pkey->pkey.ec); 297 return EC_KEY_generate_key(pkey->pkey.ec);
305 } 298}
306 299
307const EVP_PKEY_METHOD ec_pkey_meth = { 300const EVP_PKEY_METHOD ec_pkey_meth = {
308 .pkey_id = EVP_PKEY_EC, 301 .pkey_id = EVP_PKEY_EC,