blob: 1189ebc276d199990b8c937446302c6b88d0158f [file] [log] [blame]
// 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;
}