88 void mbedtls_ecdh_init( mbedtls_ecdh_context *ctx )  in mbedtls_ecdh_init()  argument
90     memset( ctx, 0, sizeof( mbedtls_ecdh_context ) );  in mbedtls_ecdh_init()
96 void mbedtls_ecdh_free( mbedtls_ecdh_context *ctx )  in mbedtls_ecdh_free()  argument
98     if( ctx == NULL )  in mbedtls_ecdh_free()
101     mbedtls_ecp_group_free( &ctx->grp );  in mbedtls_ecdh_free()
102     mbedtls_ecp_point_free( &ctx->Q   );  in mbedtls_ecdh_free()
103     mbedtls_ecp_point_free( &ctx->Qp  );  in mbedtls_ecdh_free()
104     mbedtls_ecp_point_free( &ctx->Vi  );  in mbedtls_ecdh_free()
105     mbedtls_ecp_point_free( &ctx->Vf  );  in mbedtls_ecdh_free()
106     mbedtls_mpi_free( &ctx->d  );  in mbedtls_ecdh_free()
107     mbedtls_mpi_free( &ctx->z  );  in mbedtls_ecdh_free()
108     mbedtls_mpi_free( &ctx->_d );  in mbedtls_ecdh_free()
118 int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen,  in mbedtls_ecdh_make_params()  argument
126     if( ctx == NULL || ctx->grp.pbits == 0 )  in mbedtls_ecdh_make_params()
129     if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q, f_rng, p_rng ) )  in mbedtls_ecdh_make_params()
133     if( ( ret = mbedtls_ecp_tls_write_group( &ctx->grp, &grp_len, buf, blen ) )  in mbedtls_ecdh_make_params()
140     if( ( ret = mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, ctx->point_format,  in mbedtls_ecdh_make_params()
155 int mbedtls_ecdh_read_params( mbedtls_ecdh_context *ctx,  in mbedtls_ecdh_read_params()  argument
160     if( ( ret = mbedtls_ecp_tls_read_group( &ctx->grp, buf, end - *buf ) ) != 0 )  in mbedtls_ecdh_read_params()
163     if( ( ret = mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, buf, end - *buf ) )  in mbedtls_ecdh_read_params()
173 int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, const mbedtls_ecp_keypair *key,  in mbedtls_ecdh_get_params()  argument
178     if( ( ret = mbedtls_ecp_group_copy( &ctx->grp, &key->grp ) ) != 0 )  in mbedtls_ecdh_get_params()
183         return( mbedtls_ecp_copy( &ctx->Qp, &key->Q ) );  in mbedtls_ecdh_get_params()
189     if( ( ret = mbedtls_ecp_copy( &ctx->Q, &key->Q ) ) != 0 ||  in mbedtls_ecdh_get_params()
190         ( ret = mbedtls_mpi_copy( &ctx->d, &key->d ) ) != 0 )  in mbedtls_ecdh_get_params()
199 int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen,  in mbedtls_ecdh_make_public()  argument
206     if( ctx == NULL || ctx->grp.pbits == 0 )  in mbedtls_ecdh_make_public()
209     if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q, f_rng, p_rng ) )  in mbedtls_ecdh_make_public()
213     return mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, ctx->point_format,  in mbedtls_ecdh_make_public()
220 int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx,  in mbedtls_ecdh_read_public()  argument
226     if( ctx == NULL )  in mbedtls_ecdh_read_public()
229     if( ( ret = mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, &p, blen ) ) != 0 )  in mbedtls_ecdh_read_public()
241 int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen,  in mbedtls_ecdh_calc_secret()  argument
248     if( ctx == NULL )  in mbedtls_ecdh_calc_secret()
251     if( ( ret = mbedtls_ecdh_compute_shared( &ctx->grp, &ctx->z, &ctx->Qp, &ctx->d,  in mbedtls_ecdh_calc_secret()
257     if( mbedtls_mpi_size( &ctx->z ) > blen )  in mbedtls_ecdh_calc_secret()
260     *olen = ctx->grp.pbits / 8 + ( ( ctx->grp.pbits % 8 ) != 0 );  in mbedtls_ecdh_calc_secret()
261     return mbedtls_mpi_write_binary( &ctx->z, buf, *olen );  in mbedtls_ecdh_calc_secret()