mirror of
http://galexander.org/git/simplesshd.git
synced 2024-11-27 17:58:13 +00:00
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#include <tommath.h>
|
|
#ifdef BN_MP_TO_UNSIGNED_BIN_C
|
|
/* LibTomMath, multiple-precision integer library -- Tom St Denis
|
|
*
|
|
* LibTomMath is a library that provides multiple-precision
|
|
* integer arithmetic as well as number theoretic functionality.
|
|
*
|
|
* The library was designed directly after the MPI library by
|
|
* Michael Fromberger but has been written from scratch with
|
|
* additional optimizations in place.
|
|
*
|
|
* The library is free for all purposes without any express
|
|
* guarantee it works.
|
|
*
|
|
* Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
|
|
*/
|
|
|
|
/* store in unsigned [big endian] format */
|
|
int mp_to_unsigned_bin (mp_int * a, unsigned char *b)
|
|
{
|
|
int x, res;
|
|
mp_int t;
|
|
|
|
if ((res = mp_init_copy (&t, a)) != MP_OKAY) {
|
|
return res;
|
|
}
|
|
|
|
x = 0;
|
|
while (mp_iszero (&t) == 0) {
|
|
#ifndef MP_8BIT
|
|
b[x++] = (unsigned char) (t.dp[0] & 255);
|
|
#else
|
|
b[x++] = (unsigned char) (t.dp[0] | ((t.dp[1] & 0x01) << 7));
|
|
#endif
|
|
if ((res = mp_div_2d (&t, 8, &t, NULL)) != MP_OKAY) {
|
|
mp_clear (&t);
|
|
return res;
|
|
}
|
|
}
|
|
bn_reverse (b, x);
|
|
mp_clear (&t);
|
|
return MP_OKAY;
|
|
}
|
|
#endif
|
|
|
|
/* $Source: /cvs/libtom/libtommath/bn_mp_to_unsigned_bin.c,v $ */
|
|
/* $Revision: 1.3 $ */
|
|
/* $Date: 2006/03/31 14:18:44 $ */
|