mirror of
https://github.com/openssl/openssl.git
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99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
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* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* DSA low level APIs are deprecated for public use, but still ok for
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* internal use.
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*/
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#include "internal/deprecated.h"
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/bn.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/asn1.h>
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#include <openssl/rsa.h>
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#include <openssl/dsa.h>
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#include <openssl/ec.h>
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#include "crypto/evp.h"
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EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
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long length)
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{
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EVP_PKEY *ret;
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EVP_PKEY *copy = NULL;
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if ((a == NULL) || (*a == NULL)) {
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if ((ret = EVP_PKEY_new()) == NULL) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_EVP_LIB);
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return NULL;
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}
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} else {
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ret = *a;
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#ifndef OPENSSL_NO_EC
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if (evp_pkey_is_provided(ret)
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&& EVP_PKEY_get_base_id(ret) == EVP_PKEY_EC) {
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if (!evp_pkey_copy_downgraded(©, ret))
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goto err;
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}
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#endif
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}
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if ((type != EVP_PKEY_get_id(ret) || copy != NULL)
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&& !EVP_PKEY_set_type(ret, type)) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_EVP_LIB);
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goto err;
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}
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switch (EVP_PKEY_get_base_id(ret)) {
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case EVP_PKEY_RSA:
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if ((ret->pkey.rsa = d2i_RSAPublicKey(NULL, pp, length)) == NULL) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
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goto err;
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}
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break;
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#ifndef OPENSSL_NO_DSA
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case EVP_PKEY_DSA:
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if (!d2i_DSAPublicKey(&ret->pkey.dsa, pp, length)) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
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goto err;
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}
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break;
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#endif
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#ifndef OPENSSL_NO_EC
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case EVP_PKEY_EC:
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if (copy != NULL) {
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/* use downgraded parameters from copy */
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ret->pkey.ec = copy->pkey.ec;
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copy->pkey.ec = NULL;
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}
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if (!o2i_ECPublicKey(&ret->pkey.ec, pp, length)) {
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ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
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goto err;
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}
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break;
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#endif
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default:
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ERR_raise(ERR_LIB_ASN1, ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
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goto err;
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}
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if (a != NULL)
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(*a) = ret;
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EVP_PKEY_free(copy);
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return ret;
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err:
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if (a == NULL || *a != ret)
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EVP_PKEY_free(ret);
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EVP_PKEY_free(copy);
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return NULL;
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}
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