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Added a nbits member to ecp_group

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Manuel Pégourié-Gonnard
2012-11-18 13:19:07 +01:00
committed by Paul Bakker
parent 4bdd47d2cb
commit 773ed546a2
2 changed files with 21 additions and 15 deletions
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12
library/ecp.c
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@ -64,8 +64,10 @@ void ecp_group_init( ecp_group *grp )
ecp_point_init( &grp->G );
mpi_init( &grp->N );
grp->modp = NULL;
grp->pbits = 0;
grp->nbits = 0;
grp->modp = NULL;
}
/*
@ -155,12 +157,16 @@ int ecp_group_read_string( ecp_group *grp, int radix,
MPI_CHK( ecp_point_read_string( &grp->G, radix, gx, gy ) );
MPI_CHK( mpi_read_string( &grp->N, radix, n ) );
grp->pbits = mpi_msb( &grp->P );
grp->nbits = mpi_msb( &grp->N );
cleanup:
return( ret );
}
/*
* Wrapper around fast quasi-modp functions, with fall-back to mpi_mod_mpi
* Wrapper around fast quasi-modp functions, with fall-back to mpi_mod_mpi.
* See the documentation of struct ecp_group.
*/
static int ecp_modp( mpi *N, const ecp_group *grp )
{
@ -394,7 +400,6 @@ int ecp_use_known_dp( ecp_group *grp, size_t index )
{
case POLARSSL_ECP_DP_SECP192R1:
grp->modp = ecp_mod_p192;
grp->pbits = 192;
return( ecp_group_read_string( grp, 16,
SECP192R1_P, SECP192R1_B,
SECP192R1_GX, SECP192R1_GY, SECP192R1_N ) );
@ -416,7 +421,6 @@ int ecp_use_known_dp( ecp_group *grp, size_t index )
case POLARSSL_ECP_DP_SECP521R1:
grp->modp = ecp_mod_p521;
grp->pbits = 521;
return( ecp_group_read_string( grp, 16,
SECP521R1_P, SECP521R1_B,
SECP521R1_GX, SECP521R1_GY, SECP521R1_N ) );