Mercurial > dropbear
view libtommath/bn_mp_reduce_setup.c @ 1908:eadd023fde4d
Support RSA OpenSSH new format in dropbearconvert
Added support for reading and writing. PEM writing support
has been removed.
OpenSSH file format routines have been moved to signkey_ossh.c
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Tue, 29 Mar 2022 22:27:55 +0800 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_MP_REDUCE_SETUP_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* pre-calculate the value required for Barrett reduction * For a given modulus "b" it calulates the value required in "a" */ mp_err mp_reduce_setup(mp_int *a, const mp_int *b) { mp_err err; if ((err = mp_2expt(a, b->used * 2 * MP_DIGIT_BIT)) != MP_OKAY) { return err; } return mp_div(a, b, a, NULL); } #endif