1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/bn.h>
13#include <openssl/evp.h>
14#include <openssl/objects.h>
15#include <openssl/asn1.h>
16#include <openssl/rsa.h>
17#include <openssl/dsa.h>
18#include <openssl/ec.h>
19
20#include "crypto/evp.h"
21
22EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
23 long length)
24{
25 EVP_PKEY *ret;
26
27 if ((a == NULL) || (*a == NULL)) {
28 if ((ret = EVP_PKEY_new()) == NULL) {
29 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_EVP_LIB);
30 return NULL;
31 }
32 } else
33 ret = *a;
34
35 if (type != EVP_PKEY_id(ret) && !EVP_PKEY_set_type(ret, type)) {
36 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_EVP_LIB);
37 goto err;
38 }
39
40 switch (EVP_PKEY_id(ret)) {
41#ifndef OPENSSL_NO_RSA
42 case EVP_PKEY_RSA:
43 if ((ret->pkey.rsa = d2i_RSAPublicKey(NULL, pp, length)) == NULL) {
44 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB);
45 goto err;
46 }
47 break;
48#endif
49#ifndef OPENSSL_NO_DSA
50 case EVP_PKEY_DSA:
51 /* TMP UGLY CAST */
52 if (!d2i_DSAPublicKey(&ret->pkey.dsa, pp, length)) {
53 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB);
54 goto err;
55 }
56 break;
57#endif
58#ifndef OPENSSL_NO_EC
59 case EVP_PKEY_EC:
60 if (!o2i_ECPublicKey(&ret->pkey.ec, pp, length)) {
61 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB);
62 goto err;
63 }
64 break;
65#endif
66 default:
67 ASN1err(ASN1_F_D2I_PUBLICKEY, ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
68 goto err;
69 }
70 if (a != NULL)
71 (*a) = ret;
72 return ret;
73 err:
74 if (a == NULL || *a != ret)
75 EVP_PKEY_free(ret);
76 return NULL;
77}
78