1 /* 2 * Copyright 1995-2019 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/asn1.h> 16 #include <openssl/rsa.h> 17 #include <openssl/dsa.h> 18 #include <openssl/ec.h> 19 20 #include "crypto/evp.h" 21 22 EVP_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