-/* x_bignum.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2000.
- */
-/* ====================================================================
- * Copyright (c) 2000 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).
+/*
+ * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
+#include <openssl/bn.h>
-/* Custom primitive type for BIGNUM handling. This reads in an ASN1_INTEGER as a
- * BIGNUM directly. Currently it ignores the sign which isn't a problem since all
- * BIGNUMs used are non negative and anything that looks negative is normally due
- * to an encoding error.
+/*
+ * Custom primitive type for BIGNUM handling. This reads in an ASN1_INTEGER
+ * as a BIGNUM directly. Currently it ignores the sign which isn't a problem
+ * since all BIGNUMs used are non negative and anything that looks negative
+ * is normally due to an encoding error.
*/
-#define BN_SENSITIVE 1
+#define BN_SENSITIVE 1
static int bn_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+static int bn_secure_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
static void bn_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
-static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
-static int bn_c2i(ASN1_VALUE **pval, unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
+ const ASN1_ITEM *it);
+static int bn_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+ int utype, char *free_cont, const ASN1_ITEM *it);
+static int bn_secure_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+ int utype, char *free_cont, const ASN1_ITEM *it);
+static int bn_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int indent, const ASN1_PCTX *pctx);
static ASN1_PRIMITIVE_FUNCS bignum_pf = {
- NULL, 0,
- bn_new,
- bn_free,
- 0,
- bn_c2i,
- bn_i2c
+ NULL, 0,
+ bn_new,
+ bn_free,
+ 0,
+ bn_c2i,
+ bn_i2c,
+ bn_print
+};
+
+static ASN1_PRIMITIVE_FUNCS cbignum_pf = {
+ NULL, 0,
+ bn_secure_new,
+ bn_free,
+ 0,
+ bn_secure_c2i,
+ bn_i2c,
+ bn_print
};
ASN1_ITEM_start(BIGNUM)
- ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &bignum_pf, 0, "BIGNUM"
+ ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &bignum_pf, 0, "BIGNUM"
ASN1_ITEM_end(BIGNUM)
ASN1_ITEM_start(CBIGNUM)
- ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &bignum_pf, BN_SENSITIVE, "BIGNUM"
+ ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &cbignum_pf, BN_SENSITIVE, "CBIGNUM"
ASN1_ITEM_end(CBIGNUM)
static int bn_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- *pval = (ASN1_VALUE *)BN_new();
- if(*pval) return 1;
- else return 0;
+ *pval = (ASN1_VALUE *)BN_new();
+ if (*pval != NULL)
+ return 1;
+ else
+ return 0;
+}
+
+static int bn_secure_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ *pval = (ASN1_VALUE *)BN_secure_new();
+ if (*pval != NULL)
+ return 1;
+ else
+ return 0;
}
static void bn_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- if(!*pval) return;
- if(it->size & BN_SENSITIVE) BN_clear_free((BIGNUM *)*pval);
- else BN_free((BIGNUM *)*pval);
- *pval = NULL;
+ if (!*pval)
+ return;
+ if (it->size & BN_SENSITIVE)
+ BN_clear_free((BIGNUM *)*pval);
+ else
+ BN_free((BIGNUM *)*pval);
+ *pval = NULL;
}
-static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it)
+static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
+ const ASN1_ITEM *it)
{
- BIGNUM *bn;
- int pad;
- if(!*pval) return -1;
- bn = (BIGNUM *)*pval;
- /* If MSB set in an octet we need a padding byte */
- if(BN_num_bits(bn) & 0x7) pad = 0;
- else pad = 1;
- if(cont) {
- if(pad) *cont++ = 0;
- BN_bn2bin(bn, cont);
- }
- return pad + BN_num_bytes(bn);
+ BIGNUM *bn;
+ int pad;
+ if (!*pval)
+ return -1;
+ bn = (BIGNUM *)*pval;
+ /* If MSB set in an octet we need a padding byte */
+ if (BN_num_bits(bn) & 0x7)
+ pad = 0;
+ else
+ pad = 1;
+ if (cont) {
+ if (pad)
+ *cont++ = 0;
+ BN_bn2bin(bn, cont);
+ }
+ return pad + BN_num_bytes(bn);
}
-static int bn_c2i(ASN1_VALUE **pval, unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it)
+static int bn_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+ int utype, char *free_cont, const ASN1_ITEM *it)
{
- BIGNUM *bn;
- if(!*pval) bn_new(pval, it);
- bn = (BIGNUM *)*pval;
- if(!BN_bin2bn(cont, len, bn)) {
- bn_free(pval, it);
- return 0;
- }
- return 1;
+ BIGNUM *bn;
+
+ if (*pval == NULL && !bn_new(pval, it))
+ return 0;
+ bn = (BIGNUM *)*pval;
+ if (!BN_bin2bn(cont, len, bn)) {
+ bn_free(pval, it);
+ return 0;
+ }
+ return 1;
}
+static int bn_secure_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+ int utype, char *free_cont, const ASN1_ITEM *it)
+{
+ if (!*pval)
+ bn_secure_new(pval, it);
+ return bn_c2i(pval, cont, len, utype, free_cont, it);
+}
+static int bn_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int indent, const ASN1_PCTX *pctx)
+{
+ if (!BN_print(out, *(BIGNUM **)pval))
+ return 0;
+ if (BIO_puts(out, "\n") <= 0)
+ return 0;
+ return 1;
+}
projects / openssl.git / blobdiff