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[cassiopeia.git] / lib / openssl / crypto / asn1 / p5_pbe.c
diff --git a/lib/openssl/crypto/asn1/p5_pbe.c b/lib/openssl/crypto/asn1/p5_pbe.c
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+/* p5_pbe.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) 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)
+
+
+/* Set an algorithm identifier for a PKCS#5 PBE algorithm */
+
+int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
+                               const unsigned char *salt, int saltlen)
+       {
+       PBEPARAM *pbe=NULL;
+       ASN1_STRING *pbe_str=NULL;
+       unsigned char *sstr;
+
+       pbe = PBEPARAM_new();
+       if (!pbe)
+               {
+               ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,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_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
+               goto err;
+               }
+       if (!saltlen)
+               saltlen = PKCS5_SALT_LEN;
+       if (!ASN1_STRING_set(pbe->salt, NULL, saltlen))
+               {
+               ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
+               goto err;
+               }
+       sstr = ASN1_STRING_data(pbe->salt);
+       if (salt)
+               memcpy(sstr, salt, saltlen);
+       else if (RAND_pseudo_bytes(sstr, saltlen) < 0)
+               goto err;
+
+       if(!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str))
+               {
+               ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
+               goto err;
+               }
+
+       PBEPARAM_free(pbe);
+       pbe = NULL;
+
+       if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
+               return 1;
+
+err:
+       if (pbe != NULL)
+               PBEPARAM_free(pbe);
+       if (pbe_str != NULL)
+               ASN1_STRING_free(pbe_str);
+       return 0;
+       }
+
+/* Return an algorithm identifier for a PKCS#5 PBE algorithm */
+
+X509_ALGOR *PKCS5_pbe_set(int alg, int iter,
+                               const unsigned char *salt, int saltlen)
+       {
+       X509_ALGOR *ret;
+       ret = X509_ALGOR_new();
+       if (!ret)
+               {
+               ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
+               return NULL;
+               }
+
+       if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen)) 
+               return ret;
+
+       X509_ALGOR_free(ret);
+       return NULL;
+       }