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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/asn1/ameth_lib.c
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2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib.h"
12 #include <openssl/asn1t.h>
13 #include <openssl/x509.h>
14 #include <openssl/engine.h>
15 #include "internal/asn1_int.h"
16 #include "internal/evp_int.h"
18 /* Keep this sorted in type order !! */
19 static const EVP_PKEY_ASN1_METHOD
*standard_methods
[] = {
20 #ifndef OPENSSL_NO_RSA
27 #ifndef OPENSSL_NO_DSA
38 #ifndef OPENSSL_NO_CMAC
49 typedef int sk_cmp_fn_type(const char *const *a
, const char *const *b
);
50 static STACK_OF(EVP_PKEY_ASN1_METHOD
) *app_methods
= NULL
;
56 for (i
= 0; i
< OSSL_NELEM(standard_methods
); i
++)
57 fprintf(stderr
, "Number %d id=%d (%s)\n", i
,
58 standard_methods
[i
]->pkey_id
,
59 OBJ_nid2sn(standard_methods
[i
]->pkey_id
));
63 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD
*,
64 const EVP_PKEY_ASN1_METHOD
*, ameth
);
66 static int ameth_cmp(const EVP_PKEY_ASN1_METHOD
*const *a
,
67 const EVP_PKEY_ASN1_METHOD
*const *b
)
69 return ((*a
)->pkey_id
- (*b
)->pkey_id
);
72 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD
*,
73 const EVP_PKEY_ASN1_METHOD
*, ameth
);
75 int EVP_PKEY_asn1_get_count(void)
77 int num
= OSSL_NELEM(standard_methods
);
79 num
+= sk_EVP_PKEY_ASN1_METHOD_num(app_methods
);
83 const EVP_PKEY_ASN1_METHOD
*EVP_PKEY_asn1_get0(int idx
)
85 int num
= OSSL_NELEM(standard_methods
);
89 return standard_methods
[idx
];
91 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods
, idx
);
94 static const EVP_PKEY_ASN1_METHOD
*pkey_asn1_find(int type
)
96 EVP_PKEY_ASN1_METHOD tmp
;
97 const EVP_PKEY_ASN1_METHOD
*t
= &tmp
, **ret
;
101 idx
= sk_EVP_PKEY_ASN1_METHOD_find(app_methods
, &tmp
);
103 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods
, idx
);
105 ret
= OBJ_bsearch_ameth(&t
, standard_methods
, OSSL_NELEM(standard_methods
));
112 * Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also
113 * search through engines and set *pe to a functional reference to the engine
114 * implementing 'type' or NULL if no engine implements it.
117 const EVP_PKEY_ASN1_METHOD
*EVP_PKEY_asn1_find(ENGINE
**pe
, int type
)
119 const EVP_PKEY_ASN1_METHOD
*t
;
122 t
= pkey_asn1_find(type
);
123 if (!t
|| !(t
->pkey_flags
& ASN1_PKEY_ALIAS
))
125 type
= t
->pkey_base_id
;
128 #ifndef OPENSSL_NO_ENGINE
130 /* type will contain the final unaliased type */
131 e
= ENGINE_get_pkey_asn1_meth_engine(type
);
134 return ENGINE_get_pkey_asn1_meth(e
, type
);
142 const EVP_PKEY_ASN1_METHOD
*EVP_PKEY_asn1_find_str(ENGINE
**pe
,
143 const char *str
, int len
)
146 const EVP_PKEY_ASN1_METHOD
*ameth
;
150 #ifndef OPENSSL_NO_ENGINE
152 ameth
= ENGINE_pkey_asn1_find_str(&e
, str
, len
);
155 * Convert structural into functional reference
166 for (i
= 0; i
< EVP_PKEY_asn1_get_count(); i
++) {
167 ameth
= EVP_PKEY_asn1_get0(i
);
168 if (ameth
->pkey_flags
& ASN1_PKEY_ALIAS
)
170 if (((int)strlen(ameth
->pem_str
) == len
)
171 && (strncasecmp(ameth
->pem_str
, str
, len
) == 0))
177 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD
*ameth
)
179 if (app_methods
== NULL
) {
180 app_methods
= sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp
);
181 if (app_methods
== NULL
)
184 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods
, ameth
))
186 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods
);
190 int EVP_PKEY_asn1_add_alias(int to
, int from
)
192 EVP_PKEY_ASN1_METHOD
*ameth
;
193 ameth
= EVP_PKEY_asn1_new(from
, ASN1_PKEY_ALIAS
, NULL
, NULL
);
196 ameth
->pkey_base_id
= to
;
197 if (!EVP_PKEY_asn1_add0(ameth
)) {
198 EVP_PKEY_asn1_free(ameth
);
204 int EVP_PKEY_asn1_get0_info(int *ppkey_id
, int *ppkey_base_id
,
205 int *ppkey_flags
, const char **pinfo
,
206 const char **ppem_str
,
207 const EVP_PKEY_ASN1_METHOD
*ameth
)
212 *ppkey_id
= ameth
->pkey_id
;
214 *ppkey_base_id
= ameth
->pkey_base_id
;
216 *ppkey_flags
= ameth
->pkey_flags
;
218 *pinfo
= ameth
->info
;
220 *ppem_str
= ameth
->pem_str
;
224 const EVP_PKEY_ASN1_METHOD
*EVP_PKEY_get0_asn1(EVP_PKEY
*pkey
)
229 EVP_PKEY_ASN1_METHOD
*EVP_PKEY_asn1_new(int id
, int flags
,
230 const char *pem_str
, const char *info
)
232 EVP_PKEY_ASN1_METHOD
*ameth
= OPENSSL_zalloc(sizeof(*ameth
));
238 ameth
->pkey_base_id
= id
;
239 ameth
->pkey_flags
= flags
| ASN1_PKEY_DYNAMIC
;
242 ameth
->info
= OPENSSL_strdup(info
);
248 ameth
->pem_str
= OPENSSL_strdup(pem_str
);
256 EVP_PKEY_asn1_free(ameth
);
261 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD
*dst
,
262 const EVP_PKEY_ASN1_METHOD
*src
)
265 dst
->pub_decode
= src
->pub_decode
;
266 dst
->pub_encode
= src
->pub_encode
;
267 dst
->pub_cmp
= src
->pub_cmp
;
268 dst
->pub_print
= src
->pub_print
;
270 dst
->priv_decode
= src
->priv_decode
;
271 dst
->priv_encode
= src
->priv_encode
;
272 dst
->priv_print
= src
->priv_print
;
274 dst
->old_priv_encode
= src
->old_priv_encode
;
275 dst
->old_priv_decode
= src
->old_priv_decode
;
277 dst
->pkey_size
= src
->pkey_size
;
278 dst
->pkey_bits
= src
->pkey_bits
;
280 dst
->param_decode
= src
->param_decode
;
281 dst
->param_encode
= src
->param_encode
;
282 dst
->param_missing
= src
->param_missing
;
283 dst
->param_copy
= src
->param_copy
;
284 dst
->param_cmp
= src
->param_cmp
;
285 dst
->param_print
= src
->param_print
;
287 dst
->pkey_free
= src
->pkey_free
;
288 dst
->pkey_ctrl
= src
->pkey_ctrl
;
290 dst
->item_sign
= src
->item_sign
;
291 dst
->item_verify
= src
->item_verify
;
295 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD
*ameth
)
297 if (ameth
&& (ameth
->pkey_flags
& ASN1_PKEY_DYNAMIC
)) {
298 OPENSSL_free(ameth
->pem_str
);
299 OPENSSL_free(ameth
->info
);
304 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD
*ameth
,
305 int (*pub_decode
) (EVP_PKEY
*pk
,
307 int (*pub_encode
) (X509_PUBKEY
*pub
,
309 int (*pub_cmp
) (const EVP_PKEY
*a
,
311 int (*pub_print
) (BIO
*out
,
312 const EVP_PKEY
*pkey
,
313 int indent
, ASN1_PCTX
*pctx
),
314 int (*pkey_size
) (const EVP_PKEY
*pk
),
315 int (*pkey_bits
) (const EVP_PKEY
*pk
))
317 ameth
->pub_decode
= pub_decode
;
318 ameth
->pub_encode
= pub_encode
;
319 ameth
->pub_cmp
= pub_cmp
;
320 ameth
->pub_print
= pub_print
;
321 ameth
->pkey_size
= pkey_size
;
322 ameth
->pkey_bits
= pkey_bits
;
325 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD
*ameth
,
326 int (*priv_decode
) (EVP_PKEY
*pk
,
329 int (*priv_encode
) (PKCS8_PRIV_KEY_INFO
*p8
,
331 int (*priv_print
) (BIO
*out
,
332 const EVP_PKEY
*pkey
,
336 ameth
->priv_decode
= priv_decode
;
337 ameth
->priv_encode
= priv_encode
;
338 ameth
->priv_print
= priv_print
;
341 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD
*ameth
,
342 int (*param_decode
) (EVP_PKEY
*pkey
,
343 const unsigned char **pder
,
345 int (*param_encode
) (const EVP_PKEY
*pkey
,
346 unsigned char **pder
),
347 int (*param_missing
) (const EVP_PKEY
*pk
),
348 int (*param_copy
) (EVP_PKEY
*to
,
349 const EVP_PKEY
*from
),
350 int (*param_cmp
) (const EVP_PKEY
*a
,
352 int (*param_print
) (BIO
*out
,
353 const EVP_PKEY
*pkey
,
354 int indent
, ASN1_PCTX
*pctx
))
356 ameth
->param_decode
= param_decode
;
357 ameth
->param_encode
= param_encode
;
358 ameth
->param_missing
= param_missing
;
359 ameth
->param_copy
= param_copy
;
360 ameth
->param_cmp
= param_cmp
;
361 ameth
->param_print
= param_print
;
364 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD
*ameth
,
365 void (*pkey_free
) (EVP_PKEY
*pkey
))
367 ameth
->pkey_free
= pkey_free
;
370 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD
*ameth
,
371 int (*pkey_ctrl
) (EVP_PKEY
*pkey
, int op
,
372 long arg1
, void *arg2
))
374 ameth
->pkey_ctrl
= pkey_ctrl
;
377 void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD
*ameth
,
378 int (*pkey_security_bits
) (const EVP_PKEY
381 ameth
->pkey_security_bits
= pkey_security_bits
;
384 void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD
*ameth
,
385 int (*item_verify
) (EVP_MD_CTX
*ctx
,
389 ASN1_BIT_STRING
*sig
,
391 int (*item_sign
) (EVP_MD_CTX
*ctx
,
396 ASN1_BIT_STRING
*sig
))
398 ameth
->item_sign
= item_sign
;
399 ameth
->item_verify
= item_verify
;