/* crypto/asn1/d2i_pr.c */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include <stdio.h> #include "cryptlib.h" #include <openssl/bn.h> #include <openssl/evp.h> #include <openssl/objects.h> #include <openssl/asn1.h> #ifndef OPENSSL_NO_RSA #include <openssl/rsa.h> #endif #ifndef OPENSSL_NO_DSA #include <openssl/dsa.h> #endif EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, unsigned char **pp, long length) { EVP_PKEY *ret; if ((a == NULL) || (*a == NULL)) { if ((ret=EVP_PKEY_new()) == NULL) { ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_EVP_LIB); return(NULL); } } else ret= *a; ret->save_type=type; ret->type=EVP_PKEY_type(type); switch (ret->type) { #ifndef OPENSSL_NO_RSA case EVP_PKEY_RSA: if ((ret->pkey.rsa=d2i_RSAPrivateKey(NULL, (const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */ { ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB); goto err; } break; #endif #ifndef OPENSSL_NO_DSA case EVP_PKEY_DSA: if ((ret->pkey.dsa=d2i_DSAPrivateKey(NULL, (const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */ { ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB); goto err; } break; #endif default: ASN1err(ASN1_F_D2I_PRIVATEKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE); goto err; /* break; */ } if (a != NULL) (*a)=ret; return(ret); err: if ((ret != NULL) && ((a == NULL) || (*a != ret))) EVP_PKEY_free(ret); return(NULL); } /* This works like d2i_PrivateKey() except it automatically works out the type */ EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, unsigned char **pp, long length) { STACK_OF(ASN1_TYPE) *inkey; unsigned char *p; int keytype; p = *pp; /* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE): * by analyzing it we can determine the passed structure: this * assumes the input is surrounded by an ASN1 SEQUENCE. */ inkey = d2i_ASN1_SET_OF_ASN1_TYPE(NULL, &p, length, d2i_ASN1_TYPE, ASN1_TYPE_free, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL); /* Since we only need to discern "traditional format" RSA and DSA * keys we can just count the elements. */ if(sk_ASN1_TYPE_num(inkey) == 6) keytype = EVP_PKEY_DSA; else keytype = EVP_PKEY_RSA; sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free); return d2i_PrivateKey(keytype, a, pp, length); }