| // Copyright 2017 Google Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // Definitions for streaming encryption using AES-GCM |
| // with HKDF as key derivation function. |
| syntax = "proto3"; |
| |
| package google.crypto.tink; |
| import "proto/common.proto"; |
| |
| option java_package = "com.google.crypto.tink.proto"; |
| option java_multiple_files = true; |
| option objc_class_prefix = "TINKPB"; |
| option go_package = "github.com/google/tink/proto/aes_gcm_hkdf_streaming_go_proto"; |
| |
| message AesGcmHkdfStreamingParams { |
| uint32 ciphertext_segment_size = 1; |
| uint32 derived_key_size = 2; // size of AES-GCM keys derived for each segment |
| HashType hkdf_hash_type = 3; |
| } |
| |
| message AesGcmHkdfStreamingKeyFormat { |
| uint32 version = 3; |
| AesGcmHkdfStreamingParams params = 1; |
| uint32 key_size = 2; // size of the main key (aka. "ikm", input key material) |
| } |
| |
| // key_type: type.googleapis.com/google.crypto.tink.AesGcmHkdfStreamingKey |
| message AesGcmHkdfStreamingKey { |
| uint32 version = 1; |
| AesGcmHkdfStreamingParams params = 2; |
| bytes key_value = 3; |
| } |