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Prepare for ECDH point blinding just in case

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Manuel Pégourié-Gonnard 2013-09-17 10:48:41 +02:00 committed by Paul Bakker
parent c972770f78
commit c83e418149
2 changed files with 7 additions and 6 deletions
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3
include/polarssl/ecdh.h
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@ -44,6 +44,9 @@ typedef struct
ecp_point Qp; /*!< peer's public value */ ecp_point Qp; /*!< peer's public value */
mpi z; /*!< shared secret */ mpi z; /*!< shared secret */
int point_format; /*!< format for point export */ int point_format; /*!< format for point export */
ecp_point Vi; /*!< blinding value (for later) */
ecp_point Vf; /*!< un-blinding value (for later) */
mpi _d; /*!< previous d */
} }
ecdh_context; ecdh_context;

10
library/ecdh.c
View File

@ -85,12 +85,7 @@ cleanup:
*/ */
void ecdh_init( ecdh_context *ctx ) void ecdh_init( ecdh_context *ctx )
{ {
ecp_group_init( &ctx->grp ); memset( ctx, 0, sizeof( ecdh_context ) );
mpi_init ( &ctx->d );
ecp_point_init( &ctx->Q );
ecp_point_init( &ctx->Qp );
mpi_init ( &ctx->z );
ctx->point_format = POLARSSL_ECP_PF_UNCOMPRESSED;
} }
/* /*
@ -106,6 +101,9 @@ void ecdh_free( ecdh_context *ctx )
ecp_point_free( &ctx->Q ); ecp_point_free( &ctx->Q );
ecp_point_free( &ctx->Qp ); ecp_point_free( &ctx->Qp );
mpi_free ( &ctx->z ); mpi_free ( &ctx->z );
ecp_point_free( &ctx->Vi );
ecp_point_free( &ctx->Vf );
mpi_free ( &ctx->_d );
} }
/* /*