2 * Copyright 1995-2017 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 "internal/refcount.h"
13 #include <openssl/bn.h>
14 #include <openssl/err.h>
15 #include <openssl/objects.h>
16 #include <openssl/evp.h>
17 #include <openssl/x509.h>
18 #include <openssl/rsa.h>
19 #include <openssl/dsa.h>
20 #include <openssl/dh.h>
21 #include <openssl/engine.h>
23 #include "internal/asn1_int.h"
24 #include "internal/evp_int.h"
26 static void EVP_PKEY_free_it(EVP_PKEY *x);
28 int EVP_PKEY_bits(const EVP_PKEY *pkey)
30 if (pkey && pkey->ameth && pkey->ameth->pkey_bits)
31 return pkey->ameth->pkey_bits(pkey);
35 int EVP_PKEY_security_bits(const EVP_PKEY *pkey)
39 if (!pkey->ameth || !pkey->ameth->pkey_security_bits)
41 return pkey->ameth->pkey_security_bits(pkey);
44 int EVP_PKEY_size(EVP_PKEY *pkey)
46 if (pkey && pkey->ameth && pkey->ameth->pkey_size)
47 return pkey->ameth->pkey_size(pkey);
51 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
53 #ifndef OPENSSL_NO_DSA
54 if (pkey->type == EVP_PKEY_DSA) {
55 int ret = pkey->save_parameters;
58 pkey->save_parameters = mode;
63 if (pkey->type == EVP_PKEY_EC) {
64 int ret = pkey->save_parameters;
67 pkey->save_parameters = mode;
74 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
76 if (to->type == EVP_PKEY_NONE) {
77 if (EVP_PKEY_set_type(to, from->type) == 0)
79 } else if (to->type != from->type) {
80 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES);
84 if (EVP_PKEY_missing_parameters(from)) {
85 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS);
89 if (!EVP_PKEY_missing_parameters(to)) {
90 if (EVP_PKEY_cmp_parameters(to, from) == 1)
92 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS);
96 if (from->ameth && from->ameth->param_copy)
97 return from->ameth->param_copy(to, from);
102 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
104 if (pkey->ameth && pkey->ameth->param_missing)
105 return pkey->ameth->param_missing(pkey);
109 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
111 if (a->type != b->type)
113 if (a->ameth && a->ameth->param_cmp)
114 return a->ameth->param_cmp(a, b);
118 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
120 if (a->type != b->type)
125 /* Compare parameters if the algorithm has them */
126 if (a->ameth->param_cmp) {
127 ret = a->ameth->param_cmp(a, b);
132 if (a->ameth->pub_cmp)
133 return a->ameth->pub_cmp(a, b);
139 EVP_PKEY *EVP_PKEY_new(void)
141 EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret));
144 EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
147 ret->type = EVP_PKEY_NONE;
148 ret->save_type = EVP_PKEY_NONE;
150 ret->save_parameters = 1;
151 ret->lock = CRYPTO_THREAD_lock_new();
152 if (ret->lock == NULL) {
153 EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
160 int EVP_PKEY_up_ref(EVP_PKEY *pkey)
164 if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0)
167 REF_PRINT_COUNT("EVP_PKEY", pkey);
168 REF_ASSERT_ISNT(i < 2);
169 return ((i > 1) ? 1 : 0);
173 * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey
174 * is NULL just return 1 or 0 if the algorithm exists.
177 static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
179 const EVP_PKEY_ASN1_METHOD *ameth;
183 EVP_PKEY_free_it(pkey);
185 * If key type matches and a method exists then this lookup has
186 * succeeded once so just indicate success.
188 if ((type == pkey->save_type) && pkey->ameth)
190 #ifndef OPENSSL_NO_ENGINE
191 /* If we have ENGINEs release them */
192 ENGINE_finish(pkey->engine);
194 ENGINE_finish(pkey->pmeth_engine);
195 pkey->pmeth_engine = NULL;
199 ameth = EVP_PKEY_asn1_find_str(&e, str, len);
201 ameth = EVP_PKEY_asn1_find(&e, type);
202 #ifndef OPENSSL_NO_ENGINE
207 EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
214 pkey->type = pkey->ameth->pkey_id;
215 pkey->save_type = type;
220 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
222 return pkey_set_type(pkey, type, NULL, -1);
225 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
227 return pkey_set_type(pkey, EVP_PKEY_NONE, str, len);
229 #ifndef OPENSSL_NO_ENGINE
230 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
233 if (!ENGINE_init(e)) {
234 EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB);
237 if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
239 EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM);
243 ENGINE_finish(pkey->pmeth_engine);
244 pkey->pmeth_engine = e;
248 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
250 if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
252 pkey->pkey.ptr = key;
253 return (key != NULL);
256 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
258 return pkey->pkey.ptr;
261 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
263 ASN1_OCTET_STRING *os = NULL;
264 if (pkey->type != EVP_PKEY_HMAC) {
265 EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY);
268 os = EVP_PKEY_get0(pkey);
273 #ifndef OPENSSL_NO_POLY1305
274 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
276 ASN1_OCTET_STRING *os = NULL;
277 if (pkey->type != EVP_PKEY_POLY1305) {
278 EVPerr(EVP_F_EVP_PKEY_GET0_POLY1305, EVP_R_EXPECTING_A_POLY1305_KEY);
281 os = EVP_PKEY_get0(pkey);
287 #ifndef OPENSSL_NO_SIPHASH
288 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
290 ASN1_OCTET_STRING *os = NULL;
292 if (pkey->type != EVP_PKEY_SIPHASH) {
293 EVPerr(EVP_F_EVP_PKEY_GET0_SIPHASH, EVP_R_EXPECTING_A_SIPHASH_KEY);
296 os = EVP_PKEY_get0(pkey);
302 #ifndef OPENSSL_NO_RSA
303 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
305 int ret = EVP_PKEY_assign_RSA(pkey, key);
311 RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey)
313 if (pkey->type != EVP_PKEY_RSA) {
314 EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
317 return pkey->pkey.rsa;
320 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
322 RSA *ret = EVP_PKEY_get0_RSA(pkey);
329 #ifndef OPENSSL_NO_DSA
330 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
332 int ret = EVP_PKEY_assign_DSA(pkey, key);
338 DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey)
340 if (pkey->type != EVP_PKEY_DSA) {
341 EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY);
344 return pkey->pkey.dsa;
347 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
349 DSA *ret = EVP_PKEY_get0_DSA(pkey);
356 #ifndef OPENSSL_NO_EC
358 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
360 int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
366 EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey)
368 if (pkey->type != EVP_PKEY_EC) {
369 EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
372 return pkey->pkey.ec;
375 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
377 EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey);
384 #ifndef OPENSSL_NO_DH
386 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
388 int ret = EVP_PKEY_assign_DH(pkey, key);
394 DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey)
396 if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
397 EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY);
400 return pkey->pkey.dh;
403 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
405 DH *ret = EVP_PKEY_get0_DH(pkey);
412 int EVP_PKEY_type(int type)
415 const EVP_PKEY_ASN1_METHOD *ameth;
417 ameth = EVP_PKEY_asn1_find(&e, type);
419 ret = ameth->pkey_id;
422 #ifndef OPENSSL_NO_ENGINE
428 int EVP_PKEY_id(const EVP_PKEY *pkey)
433 int EVP_PKEY_base_id(const EVP_PKEY *pkey)
435 return EVP_PKEY_type(pkey->type);
438 void EVP_PKEY_free(EVP_PKEY *x)
445 CRYPTO_DOWN_REF(&x->references, &i, x->lock);
446 REF_PRINT_COUNT("EVP_PKEY", x);
449 REF_ASSERT_ISNT(i < 0);
451 CRYPTO_THREAD_lock_free(x->lock);
452 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
456 static void EVP_PKEY_free_it(EVP_PKEY *x)
458 /* internal function; x is never NULL */
459 if (x->ameth && x->ameth->pkey_free) {
460 x->ameth->pkey_free(x);
463 #ifndef OPENSSL_NO_ENGINE
464 ENGINE_finish(x->engine);
466 ENGINE_finish(x->pmeth_engine);
467 x->pmeth_engine = NULL;
471 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
474 BIO_indent(out, indent, 128);
475 BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
476 kstr, OBJ_nid2ln(pkey->type));
480 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
481 int indent, ASN1_PCTX *pctx)
483 if (pkey->ameth && pkey->ameth->pub_print)
484 return pkey->ameth->pub_print(out, pkey, indent, pctx);
486 return unsup_alg(out, pkey, indent, "Public Key");
489 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
490 int indent, ASN1_PCTX *pctx)
492 if (pkey->ameth && pkey->ameth->priv_print)
493 return pkey->ameth->priv_print(out, pkey, indent, pctx);
495 return unsup_alg(out, pkey, indent, "Private Key");
498 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
499 int indent, ASN1_PCTX *pctx)
501 if (pkey->ameth && pkey->ameth->param_print)
502 return pkey->ameth->param_print(out, pkey, indent, pctx);
503 return unsup_alg(out, pkey, indent, "Parameters");
506 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
508 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
510 return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
513 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
515 return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
518 int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
519 const unsigned char *pt, size_t ptlen)
523 if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen,
529 size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt)
532 rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt);