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// 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.
//
////////////////////////////////////////////////////////////////////////////////
syntax = "proto3";
package google.crypto.tink;
import "proto/common.proto";
import "proto/hmac.proto";
option java_package = "com.google.crypto.tink.proto";
option java_multiple_files = true;
option go_package = "github.com/tink-crypto/tink-go/v2/proto/aes_ctr_hmac_streaming_go_proto";
message AesCtrHmacStreamingParams {
uint32 ciphertext_segment_size = 1;
uint32 derived_key_size = 2; // size of AES-CTR keys derived for each segment
HashType hkdf_hash_type = 3; // hash function for key derivation via HKDF
HmacParams hmac_params = 4; // params for authentication tags
}
message AesCtrHmacStreamingKeyFormat {
uint32 version = 3;
AesCtrHmacStreamingParams params = 1;
uint32 key_size = 2; // size of the main key (aka. "ikm", input key material)
}
// key_type: type.googleapis.com/google.crypto.tink.AesCtrHmacStreamingKey
message AesCtrHmacStreamingKey {
uint32 version = 1;
AesCtrHmacStreamingParams params = 2;
bytes key_value = 3 ; // Placeholder for multi-line ctype and debug_redact. // the main key, aka. "ikm", input key material
}
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