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ECDH: Fix Everest x25519 make_public

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This commit is contained in:
Christoph M. Wintersteiger 2019-02-15 17:21:04 +00:00 committed by Janos Follath
parent 537f41ebbf
commit efdf4d7baa
2 changed files with 8 additions and 15 deletions
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14
3rdparty/everest/library/x25519.c vendored
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@ -152,14 +152,14 @@ int mbedtls_x25519_make_public( mbedtls_x25519_context *ctx, size_t *olen,
int( *f_rng )(void *, unsigned char *, size_t), int( *f_rng )(void *, unsigned char *, size_t),
void *p_rng ) void *p_rng )
{ {
int ret = 0;
unsigned char base[MBEDTLS_X25519_KEY_SIZE_BYTES] = { 0 }; unsigned char base[MBEDTLS_X25519_KEY_SIZE_BYTES] = { 0 };
/* CMW: Is it okay that f_rng, p_rng are not used? */
(( void )f_rng);
(( void )p_rng);
if( ctx == NULL ) if( ctx == NULL )
return(MBEDTLS_ERR_ECP_BAD_INPUT_DATA); return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
if( ( ret = f_rng( p_rng, ctx->our_secret, MBEDTLS_X25519_KEY_SIZE_BYTES ) ) != 0 )
return ret;
*olen = 33; *olen = 33;
if( blen < *olen ) if( blen < *olen )
@ -173,7 +173,7 @@ int mbedtls_x25519_make_public( mbedtls_x25519_context *ctx, size_t *olen,
if( memcmp( buf, base, MBEDTLS_X25519_KEY_SIZE_BYTES ) == 0 ) if( memcmp( buf, base, MBEDTLS_X25519_KEY_SIZE_BYTES ) == 0 )
return MBEDTLS_ERR_ECP_RANDOM_FAILED; return MBEDTLS_ERR_ECP_RANDOM_FAILED;
return(0); return( ret );
} }
int mbedtls_x25519_read_public( mbedtls_x25519_context *ctx, int mbedtls_x25519_read_public( mbedtls_x25519_context *ctx,
@ -184,7 +184,7 @@ int mbedtls_x25519_read_public( mbedtls_x25519_context *ctx,
if( (*buf++ != MBEDTLS_X25519_KEY_SIZE_BYTES) ) if( (*buf++ != MBEDTLS_X25519_KEY_SIZE_BYTES) )
return(MBEDTLS_ERR_ECP_BAD_INPUT_DATA); return(MBEDTLS_ERR_ECP_BAD_INPUT_DATA);
memcpy( ctx->peer_point, buf, MBEDTLS_X25519_KEY_SIZE_BYTES ); memcpy( ctx->peer_point, buf, MBEDTLS_X25519_KEY_SIZE_BYTES );
return(0); return( 0 );
} }

9
programs/test/benchmark.c
View File

@ -1028,16 +1028,9 @@ int main( int argc, char *argv[] )
#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) #if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
CHECK_AND_CONTINUE( mbedtls_ecp_group_load(&ecdh_srv.grp, curve_info->grp_id)); CHECK_AND_CONTINUE( mbedtls_ecp_group_load(&ecdh_srv.grp, curve_info->grp_id));
CHECK_AND_CONTINUE( mbedtls_ecdh_gen_public(&ecdh_srv.grp,
&ecdh_srv.d,
&ecdh_srv.Q, myrand, NULL));
#else #else
if( ecdh_srv.var == MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0 ) { if( ecdh_srv.var == MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0 )
CHECK_AND_CONTINUE( mbedtls_ecp_group_load( &ecdh_srv.ctx.mbed_ecdh.grp, curve_info->grp_id )); CHECK_AND_CONTINUE( mbedtls_ecp_group_load( &ecdh_srv.ctx.mbed_ecdh.grp, curve_info->grp_id ));
CHECK_AND_CONTINUE( mbedtls_ecdh_gen_public( &ecdh_srv.ctx.mbed_ecdh.grp,
&ecdh_srv.ctx.mbed_ecdh.d,
&ecdh_srv.ctx.mbed_ecdh.Q, myrand, NULL ));
}
#endif #endif
mbedtls_snprintf( title, sizeof( title ), "ECDHE-%s", curve_info->name ); mbedtls_snprintf( title, sizeof( title ), "ECDHE-%s", curve_info->name );