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