Lines Matching refs:ctx
30 const mbedtls_ecdh_context *ctx)
33 return ctx->grp.id;
35 return ctx->grp_id;
134 static void ecdh_init_internal(mbedtls_ecdh_context_mbed *ctx)
136 mbedtls_ecp_group_init(&ctx->grp);
137 mbedtls_mpi_init(&ctx->d);
138 mbedtls_ecp_point_init(&ctx->Q);
139 mbedtls_ecp_point_init(&ctx->Qp);
140 mbedtls_mpi_init(&ctx->z);
143 mbedtls_ecp_restart_init(&ctx->rs);
147 mbedtls_ecp_group_id mbedtls_ecdh_get_grp_id(mbedtls_ecdh_context *ctx)
150 return ctx->MBEDTLS_PRIVATE(grp).id;
152 return ctx->MBEDTLS_PRIVATE(grp_id);
159 void mbedtls_ecdh_init(mbedtls_ecdh_context *ctx)
162 ecdh_init_internal(ctx);
163 mbedtls_ecp_point_init(&ctx->Vi);
164 mbedtls_ecp_point_init(&ctx->Vf);
165 mbedtls_mpi_init(&ctx->_d);
167 memset(ctx, 0, sizeof(mbedtls_ecdh_context));
169 ctx->var = MBEDTLS_ECDH_VARIANT_NONE;
171 ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
173 ctx->restart_enabled = 0;
177 static int ecdh_setup_internal(mbedtls_ecdh_context_mbed *ctx,
182 ret = mbedtls_ecp_group_load(&ctx->grp, grp_id);
193 int mbedtls_ecdh_setup(mbedtls_ecdh_context *ctx, mbedtls_ecp_group_id grp_id)
196 return ecdh_setup_internal(ctx, grp_id);
201 ctx->point_format = MBEDTLS_ECP_PF_COMPRESSED;
202 ctx->var = MBEDTLS_ECDH_VARIANT_EVEREST;
203 ctx->grp_id = grp_id;
204 return mbedtls_everest_setup(&ctx->ctx.everest_ecdh, grp_id);
207 ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
208 ctx->var = MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0;
209 ctx->grp_id = grp_id;
210 ecdh_init_internal(&ctx->ctx.mbed_ecdh);
211 return ecdh_setup_internal(&ctx->ctx.mbed_ecdh, grp_id);
216 static void ecdh_free_internal(mbedtls_ecdh_context_mbed *ctx)
218 mbedtls_ecp_group_free(&ctx->grp);
219 mbedtls_mpi_free(&ctx->d);
220 mbedtls_ecp_point_free(&ctx->Q);
221 mbedtls_ecp_point_free(&ctx->Qp);
222 mbedtls_mpi_free(&ctx->z);
225 mbedtls_ecp_restart_free(&ctx->rs);
233 void mbedtls_ecdh_enable_restart(mbedtls_ecdh_context *ctx)
235 ctx->restart_enabled = 1;
242 void mbedtls_ecdh_free(mbedtls_ecdh_context *ctx)
244 if (ctx == NULL) {
249 mbedtls_ecp_point_free(&ctx->Vi);
250 mbedtls_ecp_point_free(&ctx->Vf);
251 mbedtls_mpi_free(&ctx->_d);
252 ecdh_free_internal(ctx);
254 switch (ctx->var) {
257 mbedtls_everest_free(&ctx->ctx.everest_ecdh);
261 ecdh_free_internal(&ctx->ctx.mbed_ecdh);
267 ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
268 ctx->var = MBEDTLS_ECDH_VARIANT_NONE;
269 ctx->grp_id = MBEDTLS_ECP_DP_NONE;
273 static int ecdh_make_params_internal(mbedtls_ecdh_context_mbed *ctx,
288 if (ctx->grp.pbits == 0) {
294 rs_ctx = &ctx->rs;
302 if ((ret = ecdh_gen_public_restartable(&ctx->grp, &ctx->d, &ctx->Q,
307 if ((ret = mbedtls_ecdh_gen_public(&ctx->grp, &ctx->d, &ctx->Q,
313 if ((ret = mbedtls_ecp_tls_write_group(&ctx->grp, &grp_len, buf,
321 if ((ret = mbedtls_ecp_tls_write_point(&ctx->grp, &ctx->Q, point_format,
337 int mbedtls_ecdh_make_params(mbedtls_ecdh_context *ctx, size_t *olen,
344 restart_enabled = ctx->restart_enabled;
350 return ecdh_make_params_internal(ctx, olen, ctx->point_format, buf, blen,
353 switch (ctx->var) {
356 return mbedtls_everest_make_params(&ctx->ctx.everest_ecdh, olen,
360 return ecdh_make_params_internal(&ctx->ctx.mbed_ecdh, olen,
361 ctx->point_format, buf, blen,
370 static int ecdh_read_params_internal(mbedtls_ecdh_context_mbed *ctx,
374 return mbedtls_ecp_tls_read_point(&ctx->grp, &ctx->Qp, buf,
385 int mbedtls_ecdh_read_params(mbedtls_ecdh_context *ctx,
396 if ((ret = mbedtls_ecdh_setup(ctx, grp_id)) != 0) {
401 return ecdh_read_params_internal(ctx, buf, end);
403 switch (ctx->var) {
406 return mbedtls_everest_read_params(&ctx->ctx.everest_ecdh,
410 return ecdh_read_params_internal(&ctx->ctx.mbed_ecdh,
418 static int ecdh_get_params_internal(mbedtls_ecdh_context_mbed *ctx,
426 return mbedtls_ecp_copy(&ctx->Qp, &key->Q);
434 if ((ret = mbedtls_ecp_copy(&ctx->Q, &key->Q)) != 0 ||
435 (ret = mbedtls_mpi_copy(&ctx->d, &key->d)) != 0) {
445 int mbedtls_ecdh_get_params(mbedtls_ecdh_context *ctx,
454 if (mbedtls_ecdh_grp_id(ctx) == MBEDTLS_ECP_DP_NONE) {
457 if ((ret = mbedtls_ecdh_setup(ctx, key->grp.id)) != 0) {
464 if (mbedtls_ecdh_grp_id(ctx) != key->grp.id) {
470 return ecdh_get_params_internal(ctx, key, side);
472 switch (ctx->var) {
479 return mbedtls_everest_get_params(&ctx->ctx.everest_ecdh,
484 return ecdh_get_params_internal(&ctx->ctx.mbed_ecdh,
492 static int ecdh_make_public_internal(mbedtls_ecdh_context_mbed *ctx,
506 if (ctx->grp.pbits == 0) {
512 rs_ctx = &ctx->rs;
519 if ((ret = ecdh_gen_public_restartable(&ctx->grp, &ctx->d, &ctx->Q,
524 if ((ret = mbedtls_ecdh_gen_public(&ctx->grp, &ctx->d, &ctx->Q,
530 return mbedtls_ecp_tls_write_point(&ctx->grp, &ctx->Q, point_format, olen,
537 int mbedtls_ecdh_make_public(mbedtls_ecdh_context *ctx, size_t *olen,
544 restart_enabled = ctx->restart_enabled;
548 return ecdh_make_public_internal(ctx, olen, ctx->point_format, buf, blen,
551 switch (ctx->var) {
554 return mbedtls_everest_make_public(&ctx->ctx.everest_ecdh, olen,
558 return ecdh_make_public_internal(&ctx->ctx.mbed_ecdh, olen,
559 ctx->point_format, buf, blen,
568 static int ecdh_read_public_internal(mbedtls_ecdh_context_mbed *ctx,
574 if ((ret = mbedtls_ecp_tls_read_point(&ctx->grp, &ctx->Qp, &p,
589 int mbedtls_ecdh_read_public(mbedtls_ecdh_context *ctx,
593 return ecdh_read_public_internal(ctx, buf, blen);
595 switch (ctx->var) {
598 return mbedtls_everest_read_public(&ctx->ctx.everest_ecdh,
602 return ecdh_read_public_internal(&ctx->ctx.mbed_ecdh,
610 static int ecdh_calc_secret_internal(mbedtls_ecdh_context_mbed *ctx,
624 if (ctx == NULL || ctx->grp.pbits == 0) {
630 rs_ctx = &ctx->rs;
637 if ((ret = ecdh_compute_shared_restartable(&ctx->grp, &ctx->z, &ctx->Qp,
638 &ctx->d, f_rng, p_rng,
643 if ((ret = mbedtls_ecdh_compute_shared(&ctx->grp, &ctx->z, &ctx->Qp,
644 &ctx->d, f_rng, p_rng)) != 0) {
649 if (mbedtls_mpi_size(&ctx->z) > blen) {
653 *olen = ctx->grp.pbits / 8 + ((ctx->grp.pbits % 8) != 0);
655 if (mbedtls_ecp_get_type(&ctx->grp) == MBEDTLS_ECP_TYPE_MONTGOMERY) {
656 return mbedtls_mpi_write_binary_le(&ctx->z, buf, *olen);
659 return mbedtls_mpi_write_binary(&ctx->z, buf, *olen);
665 int mbedtls_ecdh_calc_secret(mbedtls_ecdh_context *ctx, size_t *olen,
672 restart_enabled = ctx->restart_enabled;
676 return ecdh_calc_secret_internal(ctx, olen, buf, blen, f_rng, p_rng,
679 switch (ctx->var) {
682 return mbedtls_everest_calc_secret(&ctx->ctx.everest_ecdh, olen,
686 return ecdh_calc_secret_internal(&ctx->ctx.mbed_ecdh, olen, buf,