/* p5_pbe.c */ /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL * project 1999. */ /* ==================================================================== * Copyright (c) 1999 The OpenSSL Project. All rights reserved. * * 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 above 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 acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED 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 OpenSSL PROJECT OR * ITS 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. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #include <stdio.h> #include "cryptlib.h" #include <openssl/asn1t.h> #include <openssl/x509.h> #include <openssl/rand.h> /* PKCS#5 password based encryption structure */ ASN1_SEQUENCE(PBEPARAM) = { ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING), ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER) } ASN1_SEQUENCE_END(PBEPARAM) IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM) /* Return an algorithm identifier for a PKCS#5 PBE algorithm */ X509_ALGOR *PKCS5_pbe_set(int alg, int iter, unsigned char *salt, int saltlen) { PBEPARAM *pbe=NULL; ASN1_OBJECT *al; X509_ALGOR *algor; ASN1_TYPE *astype=NULL; if (!(pbe = PBEPARAM_new ())) { ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); goto err; } if(iter <= 0) iter = PKCS5_DEFAULT_ITER; if (!ASN1_INTEGER_set(pbe->iter, iter)) { ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); goto err; } if (!saltlen) saltlen = PKCS5_SALT_LEN; if (!(pbe->salt->data = OPENSSL_malloc (saltlen))) { ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); goto err; } pbe->salt->length = saltlen; if (salt) memcpy (pbe->salt->data, salt, saltlen); else if (RAND_pseudo_bytes (pbe->salt->data, saltlen) < 0) goto err; if (!(astype = ASN1_TYPE_new())) { ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); goto err; } astype->type = V_ASN1_SEQUENCE; if(!ASN1_pack_string_of(PBEPARAM, pbe, i2d_PBEPARAM, &astype->value.sequence)) { ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); goto err; } PBEPARAM_free (pbe); pbe = NULL; al = OBJ_nid2obj(alg); /* never need to free al */ if (!(algor = X509_ALGOR_new())) { ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); goto err; } ASN1_OBJECT_free(algor->algorithm); algor->algorithm = al; algor->parameter = astype; return (algor); err: if (pbe != NULL) PBEPARAM_free(pbe); if (astype != NULL) ASN1_TYPE_free(astype); return NULL; }