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Create ecp_group_copy() and use it

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Manuel Pégourié-Gonnard 2013-08-12 15:44:31 +02:00
parent aa431613b3
commit e09631b7c4
3 changed files with 21 additions and 2 deletions
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11
include/polarssl/ecp.h
View File

@ -219,6 +219,17 @@ int ecp_is_zero( ecp_point *pt );
*/ */
int ecp_copy( ecp_point *P, const ecp_point *Q ); int ecp_copy( ecp_point *P, const ecp_point *Q );
/**
* \brief Copy the contents of a group object
*
* \param dst Destination group
* \param src Source group
*
* \return 0 if successful,
* POLARSSL_ERR_MPI_MALLOC_FAILED if memory allocation failed
*/
int ecp_group_copy( ecp_group *dst, const ecp_group *src );
/** /**
* \brief Import a non-zero point from two ASCII strings * \brief Import a non-zero point from two ASCII strings
* *

8
library/ecp.c
View File

@ -181,6 +181,14 @@ cleanup:
return( ret ); return( ret );
} }
/*
* Copy the contents of a group object
*/
int ecp_group_copy( ecp_group *dst, const ecp_group *src )
{
return ecp_use_known_dp( dst, src->id );
}
/* /*
* Import a non-zero point from ASCII strings * Import a non-zero point from ASCII strings
*/ */

4
programs/pkey/ecdsa.c
View File

@ -152,9 +152,9 @@ int main( int argc, char *argv[] )
printf( " . Preparing verification context..." ); printf( " . Preparing verification context..." );
fflush( stdout ); fflush( stdout );
if( ( ret = ecp_use_known_dp( &ctx_verify.grp, ctx_sign.grp.id ) ) != 0 ) if( ( ret = ecp_group_copy( &ctx_verify.grp, &ctx_sign.grp ) ) != 0 )
{ {
printf( " failed\n ! ecp_use_known_dp returned %d\n", ret ); printf( " failed\n ! ecp_group_copy returned %d\n", ret );
goto exit; goto exit;
} }