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Start introducing mbedtls_ecjpake_context

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Manuel Pégourié-Gonnard
2015-08-12 16:58:50 +02:00
parent 3aed1851b3
commit 7af8bc1007
2 changed files with 104 additions and 0 deletions
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58
library/ecjpake.c
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@ -36,6 +36,64 @@
#include <string.h>
/*
* Initialize context
*/
void mbedtls_ecjpake_init( mbedtls_ecjpake_context *ctx )
{
if( ctx == NULL )
return;
ctx->md_info = NULL;
mbedtls_ecp_group_init( &ctx->grp );
mbedtls_ecp_point_init( &ctx->X1 );
mbedtls_ecp_point_init( &ctx->X2 );
mbedtls_ecp_point_init( &ctx->X3 );
mbedtls_ecp_point_init( &ctx->X4 );
mbedtls_mpi_init( &ctx->xa );
mbedtls_mpi_init( &ctx->xb );
}
/*
* Free context
*/
void mbedtls_ecjpake_free( mbedtls_ecjpake_context *ctx )
{
if( ctx == NULL )
return;
ctx->md_info = NULL;
mbedtls_ecp_group_free( &ctx->grp );
mbedtls_ecp_point_free( &ctx->X1 );
mbedtls_ecp_point_free( &ctx->X2 );
mbedtls_ecp_point_free( &ctx->X3 );
mbedtls_ecp_point_free( &ctx->X4 );
mbedtls_mpi_free( &ctx->xa );
mbedtls_mpi_free( &ctx->xb );
}
/*
* Setup context
*/
int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx,
mbedtls_md_type_t hash,
mbedtls_ecp_group_id curve )
{
int ret;
if( ( ctx->md_info = mbedtls_md_info_from_type( hash ) ) == NULL )
return( MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE );
if( ( ret = mbedtls_ecp_group_load( &ctx->grp, curve ) ) != 0 )
return( ret );
return( 0 );
}
/*
* Write a point plus its length to a buffer
*/