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// Copyright 2019 Google LLC
//
// 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";
option java_package = "com.google.crypto.tink.proto";
option java_multiple_files = true;
option go_package = "github.com/tink-crypto/tink-go/v2/proto/hkdf_prf_proto";
message HkdfPrfParams {
HashType hash = 1;
// Optional.
//
// An unspecified or zero-length value is equivalent to a sequence of zeros
// (0x00) with a length equal to the output size of hash.
//
// See https://rfc-editor.org/rfc/rfc5869.
bytes salt = 2;
}
message HkdfPrfKey {
uint32 version = 1;
HkdfPrfParams params = 2;
bytes key_value = 3; // Placeholder for ctype and debug_redact.
}
message HkdfPrfKeyFormat {
HkdfPrfParams params = 1;
uint32 key_size = 2;
uint32 version = 3;
}
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