-/* $OpenBSD: bn_convert.c,v 1.1 2023/04/14 11:10:11 jsing Exp $ */
+/* $OpenBSD: bn_convert.c,v 1.2 2023/04/17 12:36:59 jsing Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
return 1;
}
+int
+BN_bn2mpi(const BIGNUM *a, unsigned char *d)
+{
+ int bits;
+ int num = 0;
+ int ext = 0;
+ long l;
+
+ bits = BN_num_bits(a);
+ num = (bits + 7) / 8;
+ if (bits > 0) {
+ ext = ((bits & 0x07) == 0);
+ }
+ if (d == NULL)
+ return (num + 4 + ext);
+
+ l = num + ext;
+ d[0] = (unsigned char)(l >> 24) & 0xff;
+ d[1] = (unsigned char)(l >> 16) & 0xff;
+ d[2] = (unsigned char)(l >> 8) & 0xff;
+ d[3] = (unsigned char)(l) & 0xff;
+ if (ext)
+ d[4] = 0;
+ num = BN_bn2bin(a, &(d[4 + ext]));
+ if (a->neg)
+ d[4] |= 0x80;
+ return (num + 4 + ext);
+}
+
+BIGNUM *
+BN_mpi2bn(const unsigned char *d, int n, BIGNUM *ain)
+{
+ BIGNUM *a = ain;
+ long len;
+ int neg = 0;
+
+ if (n < 4) {
+ BNerror(BN_R_INVALID_LENGTH);
+ return (NULL);
+ }
+ len = ((long)d[0] << 24) | ((long)d[1] << 16) | ((int)d[2] << 8) |
+ (int)d[3];
+ if ((len + 4) != n) {
+ BNerror(BN_R_ENCODING_ERROR);
+ return (NULL);
+ }
+
+ if (a == NULL)
+ a = BN_new();
+ if (a == NULL)
+ return (NULL);
+
+ if (len == 0) {
+ a->neg = 0;
+ a->top = 0;
+ return (a);
+ }
+ d += 4;
+ if ((*d) & 0x80)
+ neg = 1;
+ if (BN_bin2bn(d, (int)len, a) == NULL) {
+ if (ain == NULL)
+ BN_free(a);
+ return (NULL);
+ }
+ BN_set_negative(a, neg);
+ if (neg) {
+ BN_clear_bit(a, BN_num_bits(a) - 1);
+ }
+ return (a);
+}
+
#ifndef OPENSSL_NO_BIO
int
BN_print_fp(FILE *fp, const BIGNUM *a)
+++ /dev/null
-/* $OpenBSD: bn_mpi.c,v 1.12 2023/02/13 04:25:37 jsing Exp $ */
-/* 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 <openssl/err.h>
-
-#include "bn_local.h"
-
-int
-BN_bn2mpi(const BIGNUM *a, unsigned char *d)
-{
- int bits;
- int num = 0;
- int ext = 0;
- long l;
-
- bits = BN_num_bits(a);
- num = (bits + 7) / 8;
- if (bits > 0) {
- ext = ((bits & 0x07) == 0);
- }
- if (d == NULL)
- return (num + 4 + ext);
-
- l = num + ext;
- d[0] = (unsigned char)(l >> 24) & 0xff;
- d[1] = (unsigned char)(l >> 16) & 0xff;
- d[2] = (unsigned char)(l >> 8) & 0xff;
- d[3] = (unsigned char)(l) & 0xff;
- if (ext)
- d[4] = 0;
- num = BN_bn2bin(a, &(d[4 + ext]));
- if (a->neg)
- d[4] |= 0x80;
- return (num + 4 + ext);
-}
-
-BIGNUM *
-BN_mpi2bn(const unsigned char *d, int n, BIGNUM *ain)
-{
- BIGNUM *a = ain;
- long len;
- int neg = 0;
-
- if (n < 4) {
- BNerror(BN_R_INVALID_LENGTH);
- return (NULL);
- }
- len = ((long)d[0] << 24) | ((long)d[1] << 16) | ((int)d[2] << 8) |
- (int)d[3];
- if ((len + 4) != n) {
- BNerror(BN_R_ENCODING_ERROR);
- return (NULL);
- }
-
- if (a == NULL)
- a = BN_new();
- if (a == NULL)
- return (NULL);
-
- if (len == 0) {
- a->neg = 0;
- a->top = 0;
- return (a);
- }
- d += 4;
- if ((*d) & 0x80)
- neg = 1;
- if (BN_bin2bn(d, (int)len, a) == NULL) {
- if (ain == NULL)
- BN_free(a);
- return (NULL);
- }
- BN_set_negative(a, neg);
- if (neg) {
- BN_clear_bit(a, BN_num_bits(a) - 1);
- }
- return (a);
-}