blob: ddcf0a491a99aaa71f62df76f450edc0cf1d0be9 [file] [log] [blame]
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#include <openssl/evp.h>
#include <assert.h>
#include <string.h>
#include <openssl/bio.h>
#include <openssl/dh.h>
#include <openssl/dsa.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/rsa.h>
#include "internal.h"
extern const EVP_PKEY_ASN1_METHOD ec_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meth;
EVP_PKEY *EVP_PKEY_new(void) {
EVP_PKEY *ret;
ret = OPENSSL_malloc(sizeof(EVP_PKEY));
if (ret == NULL) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_new, ERR_R_MALLOC_FAILURE);
return NULL;
}
memset(ret, 0, sizeof(EVP_PKEY));
ret->type = EVP_PKEY_NONE;
ret->references = 1;
return ret;
}
static void free_it(EVP_PKEY *pkey) {
if (pkey->ameth && pkey->ameth->pkey_free) {
pkey->ameth->pkey_free(pkey);
pkey->pkey.ptr = NULL;
pkey->type = EVP_PKEY_NONE;
}
}
void EVP_PKEY_free(EVP_PKEY *pkey) {
if (pkey == NULL) {
return;
}
if (CRYPTO_add(&pkey->references, -1, CRYPTO_LOCK_EVP_PKEY)) {
return;
}
free_it(pkey);
if (pkey->attributes) {
/* TODO(fork): layering: X509_ATTRIBUTE_free is an X.509 function. In
* practice this path isn't called but should be removed in the future. */
/*sk_X509_ATTRIBUTE_pop_free(pkey->attributes, X509_ATTRIBUTE_free);*/
assert(0);
}
OPENSSL_free(pkey);
}
int EVP_PKEY_is_opaque(const EVP_PKEY *pkey) {
if (pkey->ameth && pkey->ameth->pkey_opaque) {
return pkey->ameth->pkey_opaque(pkey);
}
return 0;
}
int EVP_PKEY_supports_digest(const EVP_PKEY *pkey, const EVP_MD *md) {
if (pkey->ameth && pkey->ameth->pkey_supports_digest) {
return pkey->ameth->pkey_supports_digest(pkey, md);
}
return 1;
}
int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
if (a->type != b->type) {
return -1;
}
if (a->ameth) {
int ret;
/* Compare parameters if the algorithm has them */
if (a->ameth->param_cmp) {
ret = a->ameth->param_cmp(a, b);
if (ret <= 0) {
return ret;
}
}
if (a->ameth->pub_cmp) {
return a->ameth->pub_cmp(a, b);
}
}
return -2;
}
EVP_PKEY *EVP_PKEY_dup(EVP_PKEY *pkey) {
CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
return pkey;
}
int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
if (to->type != from->type) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_copy_parameters, EVP_R_DIFFERENT_KEY_TYPES);
goto err;
}
if (EVP_PKEY_missing_parameters(from)) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_copy_parameters, EVP_R_MISSING_PARAMETERS);
goto err;
}
if (from->ameth && from->ameth->param_copy) {
return from->ameth->param_copy(to, from);
}
err:
return 0;
}
int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) {
if (pkey->ameth && pkey->ameth->param_missing) {
return pkey->ameth->param_missing(pkey);
}
return 0;
}
int EVP_PKEY_size(const EVP_PKEY *pkey) {
if (pkey && pkey->ameth && pkey->ameth->pkey_size) {
return pkey->ameth->pkey_size(pkey);
}
return 0;
}
int EVP_PKEY_bits(EVP_PKEY *pkey) {
if (pkey && pkey->ameth && pkey->ameth->pkey_bits) {
return pkey->ameth->pkey_bits(pkey);
}
return 0;
}
int EVP_PKEY_id(const EVP_PKEY *pkey) {
return pkey->type;
}
/* TODO(fork): remove the first argument. */
const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pengine, int nid) {
switch (nid) {
case EVP_PKEY_RSA:
case EVP_PKEY_RSA2:
return &rsa_asn1_meth;
case EVP_PKEY_HMAC:
return &hmac_asn1_meth;
case EVP_PKEY_EC:
return &ec_asn1_meth;
default:
return NULL;
}
}
int EVP_PKEY_type(int nid) {
const EVP_PKEY_ASN1_METHOD *meth = EVP_PKEY_asn1_find(NULL, nid);
if (meth == NULL) {
return NID_undef;
}
return meth->pkey_id;
}
EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e, const uint8_t *mac_key,
size_t mac_key_len) {
EVP_PKEY_CTX *mac_ctx = NULL;
EVP_PKEY *ret = NULL;
mac_ctx = EVP_PKEY_CTX_new_id(type, e);
if (!mac_ctx) {
return NULL;
}
if (!EVP_PKEY_keygen_init(mac_ctx) ||
!EVP_PKEY_CTX_ctrl(mac_ctx, -1, EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_SET_MAC_KEY, mac_key_len,
(uint8_t *)mac_key) ||
!EVP_PKEY_keygen(mac_ctx, &ret)) {
ret = NULL;
goto merr;
}
merr:
if (mac_ctx) {
EVP_PKEY_CTX_free(mac_ctx);
}
return ret;
}
int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) {
if (EVP_PKEY_assign_RSA(pkey, key)) {
RSA_up_ref(key);
return 1;
}
return 0;
}
int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key) {
return EVP_PKEY_assign(pkey, EVP_PKEY_RSA, key);
}
RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) {
if (pkey->type != EVP_PKEY_RSA) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_get1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
return NULL;
}
RSA_up_ref(pkey->pkey.rsa);
return pkey->pkey.rsa;
}
int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) {
if (EVP_PKEY_assign_DSA(pkey, key)) {
DSA_up_ref(key);
return 1;
}
return 0;
}
int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key) {
return EVP_PKEY_assign(pkey, EVP_PKEY_DSA, key);
}
DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) {
if (pkey->type != EVP_PKEY_DSA) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_get1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
return NULL;
}
DSA_up_ref(pkey->pkey.dsa);
return pkey->pkey.dsa;
}
int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
if (EVP_PKEY_assign_EC_KEY(pkey, key)) {
EC_KEY_up_ref(key);
return 1;
}
return 0;
}
int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
return EVP_PKEY_assign(pkey, EVP_PKEY_EC, key);
}
EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) {
if (pkey->type != EVP_PKEY_EC) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_get1_EC_KEY, EVP_R_EXPECTING_AN_EC_KEY_KEY);
return NULL;
}
EC_KEY_up_ref(pkey->pkey.ec);
return pkey->pkey.ec;
}
int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) {
if (EVP_PKEY_assign_DH(pkey, key)) {
DH_up_ref(key);
return 1;
}
return 0;
}
int EVP_PKEY_assign_DH(EVP_PKEY *pkey, DH *key) {
return EVP_PKEY_assign(pkey, EVP_PKEY_EC, key);
}
DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) {
if (pkey->type != EVP_PKEY_DH) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_get1_DH, EVP_R_EXPECTING_A_DH_KEY);
return NULL;
}
DH_up_ref(pkey->pkey.dh);
return pkey->pkey.dh;
}
int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) {
if (!EVP_PKEY_set_type(pkey, type)) {
return 0;
}
pkey->pkey.ptr = key;
return key != NULL;
}
const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pengine,
const char *name,
size_t len) {
if (len == 3 && memcmp(name, "RSA", 3) == 0) {
return &rsa_asn1_meth;
} else if (len == 4 && memcmp(name, "HMAC", 4) == 0) {
return &hmac_asn1_meth;
} if (len == 2 && memcmp(name, "EC", 2) == 0) {
return &ec_asn1_meth;
}
return NULL;
}
int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) {
const EVP_PKEY_ASN1_METHOD *ameth;
if (pkey && pkey->pkey.ptr) {
free_it(pkey);
}
ameth = EVP_PKEY_asn1_find(NULL, type);
if (ameth == NULL) {
OPENSSL_PUT_ERROR(EVP, EVP_PKEY_set_type, EVP_R_UNSUPPORTED_ALGORITHM);
ERR_add_error_dataf("algorithm %d (%s)", type, OBJ_nid2sn(type));
return 0;
}
if (pkey) {
pkey->ameth = ameth;
pkey->type = pkey->ameth->pkey_id;
}
return 1;
}
int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
if (a->type != b->type) {
return -1;
}
if (a->ameth && a->ameth->param_cmp) {
return a->ameth->param_cmp(a, b);
}
return -2;
}
static int print_unsupported(BIO *out, const EVP_PKEY *pkey, int indent,
const char *kstr) {
BIO_indent(out, indent, 128);
BIO_printf(out, "%s algorithm \"%s\" unsupported\n", kstr,
OBJ_nid2ln(pkey->type));
return 1;
}
int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
ASN1_PCTX *pctx) {
if (pkey->ameth && pkey->ameth->pub_print) {
return pkey->ameth->pub_print(out, pkey, indent, pctx);
}
return print_unsupported(out, pkey, indent, "Public Key");
}
int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
ASN1_PCTX *pctx) {
if (pkey->ameth && pkey->ameth->priv_print) {
return pkey->ameth->priv_print(out, pkey, indent, pctx);
}
return print_unsupported(out, pkey, indent, "Private Key");
}
int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
ASN1_PCTX *pctx) {
if (pkey->ameth && pkey->ameth->param_print) {
return pkey->ameth->param_print(out, pkey, indent, pctx);
}
return print_unsupported(out, pkey, indent, "Parameters");
}
int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, 0,
(void *)md);
}
int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_GET_MD,
0, (void *)out_md);
}
void OpenSSL_add_all_algorithms(void) {}
void EVP_cleanup(void) {}