1 /*
2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3  *
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
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/rsa.h>
16 #include <openssl/dsa.h>
17 #include <openssl/ec.h>
18 
i2d_PublicKey(EVP_PKEY * a,unsigned char ** pp)19 int i2d_PublicKey(EVP_PKEY *a, unsigned char **pp)
20 {
21     switch (EVP_PKEY_id(a)) {
22 #ifndef OPENSSL_NO_RSA
23     case EVP_PKEY_RSA:
24         return i2d_RSAPublicKey(EVP_PKEY_get0_RSA(a), pp);
25 #endif
26 #ifndef OPENSSL_NO_DSA
27     case EVP_PKEY_DSA:
28         return i2d_DSAPublicKey(EVP_PKEY_get0_DSA(a), pp);
29 #endif
30 #ifndef OPENSSL_NO_EC
31     case EVP_PKEY_EC:
32         return i2o_ECPublicKey(EVP_PKEY_get0_EC_KEY(a), pp);
33 #endif
34     default:
35         ASN1err(ASN1_F_I2D_PUBLICKEY, ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
36         return -1;
37     }
38 }
39