diff options
Diffstat (limited to 'mpi/mpiutil.c')
| -rw-r--r-- | mpi/mpiutil.c | 65 |
1 files changed, 58 insertions, 7 deletions
diff --git a/mpi/mpiutil.c b/mpi/mpiutil.c index c9af50561..f2f1726c4 100644 --- a/mpi/mpiutil.c +++ b/mpi/mpiutil.c @@ -193,12 +193,16 @@ mpi_free( MPI a ) return; if( DBG_MEMORY ) log_debug("mpi_free\n" ); - #ifdef M_DEBUG - mpi_debug_free_limb_space(a->d, info); - #else - mpi_free_limb_space(a->d); - #endif - if( a->flags & ~3 ) + if( a->flags & 4 ) + m_free( a->d ); + else { + #ifdef M_DEBUG + mpi_debug_free_limb_space(a->d, info); + #else + mpi_free_limb_space(a->d); + #endif + } + if( a->flags & ~7 ) log_bug("invalid flag value in mpi\n"); m_free(a); } @@ -232,6 +236,47 @@ mpi_set_secure( MPI a ) } +MPI +mpi_set_opaque( MPI a, void *p, int len ) +{ + if( !a ) { + #ifdef M_DEBUG + a = mpi_debug_alloc(0,"alloc_opaque"); + #else + a = mpi_alloc(0); + #endif + } + + if( a->flags & 4 ) + m_free( a->d ); + else { + #ifdef M_DEBUG + mpi_debug_free_limb_space(a->d, "alloc_opaque"); + #else + mpi_free_limb_space(a->d); + #endif + } + + a->d = p; + a->alloced = 0; + a->nlimbs = 0; + a->nbits = len; + a->flags = 4; + return a; +} + + +void * +mpi_get_opaque( MPI a, int *len ) +{ + if( !(a->flags & 4) ) + log_bug("mpi_get_opaque on normal mpi\n"); + if( len ) + *len = a->nbits; + return a->d; +} + + /**************** * Note: This copy function should not interpret the MPI * but copy it transparently. @@ -246,7 +291,13 @@ mpi_copy( MPI a ) int i; MPI b; - if( a ) { + if( a && (a->flags & 4) ) { + void *p = m_is_secure(a->d)? m_alloc_secure( a->nbits ) + : m_alloc( a->nbits ); + memcpy( p, a->d, a->nbits ); + b = mpi_set_opaque( NULL, p, a->nbits ); + } + else if( a ) { #ifdef M_DEBUG b = mpi_is_secure(a)? mpi_debug_alloc_secure( a->nlimbs, info ) : mpi_debug_alloc( a->nlimbs, info ); |