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Use mpi_shrink() in ecp_precompute()

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Manuel Pégourié-Gonnard 2013-11-21 10:47:41 +01:00
parent 5868163e07
commit 7f762319ad
1 changed files with 7 additions and 1 deletions
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8
library/ecp.c
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@ -1354,11 +1354,17 @@ static int ecp_precompute_comb( const ecp_group *grp,
ecp_normalize_many( grp, TT, k ); ecp_normalize_many( grp, TT, k );
/* /*
* Post-precessing: reclaim some memory by not storing Z (always 1) * Post-precessing: reclaim some memory by
* - not storing Z (always 1)
* - shrinking other coordinates
* However keep the same number of limbs as P, which will be useful in
* ecp_select_comb()
*/ */
for( i = 0; i < ( 1U << (w-1) ); i++ ) for( i = 0; i < ( 1U << (w-1) ); i++ )
{ {
mpi_free( &T[i].Z ); mpi_free( &T[i].Z );
mpi_shrink( &T[i].X, grp->P.n );
mpi_shrink( &T[i].Y, grp->P.n );
} }
cleanup: cleanup: