3 * Copyright 2018 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H
20 #define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H
22 #include <grpc/support/port_platform.h>
26 #include "src/core/tsi/transport_security_grpc.h"
29 * This method creates an ALTS zero-copy grpc protector.
31 * - key: a symmetric key used to seal/unseal frames.
32 * - key_size: the size of symmetric key.
33 * - is_rekey: use rekeying AEAD crypter.
34 * - is_client: a flag indicating if the protector will be used at client or
36 * - is_integrity_only: a flag indicating if the protector instance will be
37 * used for integrity-only or privacy-integrity mode.
38 * - enable_extra_copy: a flag indicating if the protector instance does one
39 * extra memory copy during the protect operation for integrity_only mode.
40 * For the unprotect operation, it is still zero-copy. If application intends
41 * to modify the data buffer after the protect operation, we can turn on this
42 * mode to avoid integrity check failure.
43 * - max_protected_frame_size: an in/out parameter indicating max frame size
44 * to be used by the protector. If it is nullptr, the default frame size will
45 * be used. Otherwise, the provided frame size will be adjusted (if not
46 * falling into a valid frame range) and used.
47 * - protector: a pointer to the zero-copy protector returned from the method.
49 * This method returns TSI_OK on success or a specific error code otherwise.
51 tsi_result alts_zero_copy_grpc_protector_create(
52 const uint8_t* key, size_t key_size, bool is_rekey, bool is_client,
53 bool is_integrity_only, bool enable_extra_copy,
54 size_t* max_protected_frame_size, tsi_zero_copy_grpc_protector** protector);
56 #endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H \