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view libtommath/bn_mp_pack_count.c @ 1907:3e0aacf0a4f3

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Fix ed25519 dropbear to openssh conversion This introduces buf_put_ed25519_priv_ossh and buf_get_ed25519_priv_ossh to handle OpenSSH internal private key format. Previously writing OpenSSH format keys didn't write the private part correctly.
author Matt Johnston <matt@ucc.asn.au>
date Tue, 29 Mar 2022 16:46:06 +0800
parents 1051e4eea25a
children
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#include "tommath_private.h"
#ifdef BN_MP_PACK_COUNT_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

size_t mp_pack_count(const mp_int *a, size_t nails, size_t size)
{
   size_t bits = (size_t)mp_count_bits(a);
   return ((bits / ((size * 8u) - nails)) + (((bits % ((size * 8u) - nails)) != 0u) ? 1u : 0u));
}

#endif