Mercurial > dropbear
view libtommath/bn_mp_sqr.c @ 1698:f966834f0f9c
Use Linux getrandom() to ensure random device is initialised
Remove old code warning about random device being not ready,
/dev/random isn't used by default anyway.
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Thu, 28 May 2020 22:50:41 +0800 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_MP_SQR_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* computes b = a*a */ mp_err mp_sqr(const mp_int *a, mp_int *b) { mp_err err; if (MP_HAS(S_MP_TOOM_SQR) && /* use Toom-Cook? */ (a->used >= MP_TOOM_SQR_CUTOFF)) { err = s_mp_toom_sqr(a, b); } else if (MP_HAS(S_MP_KARATSUBA_SQR) && /* Karatsuba? */ (a->used >= MP_KARATSUBA_SQR_CUTOFF)) { err = s_mp_karatsuba_sqr(a, b); } else if (MP_HAS(S_MP_SQR_FAST) && /* can we use the fast comba multiplier? */ (((a->used * 2) + 1) < MP_WARRAY) && (a->used < (MP_MAXFAST / 2))) { err = s_mp_sqr_fast(a, b); } else if (MP_HAS(S_MP_SQR)) { err = s_mp_sqr(a, b); } else { err = MP_VAL; } b->sign = MP_ZPOS; return err; } #endif