-/* x_bignum.c */
/*
- * Written by Dr Stephen N Henson (steve@openssl.org) 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 Apache License 2.0 (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>
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,
+static int bn_i2c(const 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, const ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int indent, const ASN1_PCTX *pctx);
static ASN1_PRIMITIVE_FUNCS bignum_pf = {
NULL, 0,
bn_free,
0,
bn_c2i,
- bn_i2c
+ bn_i2c,
+ bn_print
};
static ASN1_PRIMITIVE_FUNCS cbignum_pf = {
bn_free,
0,
bn_secure_c2i,
- bn_i2c
+ bn_i2c,
+ bn_print
};
ASN1_ITEM_start(BIGNUM)
static int bn_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
*pval = (ASN1_VALUE *)BN_new();
- if (*pval)
+ 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)
+ if (*pval != NULL)
return 1;
else
return 0;
static void bn_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- if (!*pval)
+ if (*pval == NULL)
return;
if (it->size & BN_SENSITIVE)
BN_clear_free((BIGNUM *)*pval);
*pval = NULL;
}
-static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
+static int bn_i2c(const ASN1_VALUE **pval, unsigned char *cont, int *putype,
const ASN1_ITEM *it)
{
BIGNUM *bn;
int pad;
- if (!*pval)
+ if (*pval == NULL)
return -1;
bn = (BIGNUM *)*pval;
/* If MSB set in an octet we need a padding byte */
{
BIGNUM *bn;
- if (!*pval)
- bn_new(pval, it);
+ if (*pval == NULL && !bn_new(pval, it))
+ return 0;
bn = (BIGNUM *)*pval;
if (!BN_bin2bn(cont, len, bn)) {
bn_free(pval, it);
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);
+ int ret;
+ BIGNUM *bn;
+
+ if (*pval == NULL && !bn_secure_new(pval, it))
+ return 0;
+
+ ret = bn_c2i(pval, cont, len, utype, free_cont, it);
+ if (!ret)
+ return 0;
+
+ /* Set constant-time flag for all secure BIGNUMS */
+ bn = (BIGNUM *)*pval;
+ BN_set_flags(bn, BN_FLG_CONSTTIME);
+ return ret;
+}
+
+static int bn_print(BIO *out, const 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