mirror of
https://github.com/clearml/dropbear
synced 2025-04-21 22:54:48 +00:00
615ed4e46a
* make key-generation compliant to FIPS 186.4 * fix includes in tommath_class.h * update fuzzcorpus instead of error-out * fixup fuzzing make-targets * update Makefile.in * apply necessary patches to ltm sources * clean-up not required ltm files * update to vanilla ltm 1.1.0 this already only contains the required files * remove set/get double
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
#include "tommath_private.h"
|
|
#ifdef BN_MP_COUNT_BITS_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.
|
|
*
|
|
* SPDX-License-Identifier: Unlicense
|
|
*/
|
|
|
|
/* returns the number of bits in an int */
|
|
int mp_count_bits(const mp_int *a)
|
|
{
|
|
int r;
|
|
mp_digit q;
|
|
|
|
/* shortcut */
|
|
if (a->used == 0) {
|
|
return 0;
|
|
}
|
|
|
|
/* get number of digits and add that */
|
|
r = (a->used - 1) * DIGIT_BIT;
|
|
|
|
/* take the last digit and count the bits in it */
|
|
q = a->dp[a->used - 1];
|
|
while (q > (mp_digit)0) {
|
|
++r;
|
|
q >>= (mp_digit)1;
|
|
}
|
|
return r;
|
|
}
|
|
#endif
|
|
|
|
/* ref: HEAD -> master, tag: v1.1.0 */
|
|
/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
|
|
/* commit time: 2019-01-28 20:32:32 +0100 */
|