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// Copyright 2024 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;
option java_package = "com.google.crypto.tink.proto";
option java_multiple_files = true;
option go_package = "github.com/tink-crypto/tink-go/v2/proto/slh_dsa_proto";
enum SlhDsaHashType {
SLH_DSA_HASH_TYPE_UNSPECIFIED = 0;
SHA2 = 1;
SHAKE = 2;
}
enum SlhDsaSignatureType {
SLH_DSA_SIGNATURE_TYPE_UNSPECIFIED = 0;
FAST_SIGNING = 1;
SMALL_SIGNATURE = 2;
}
// Protos for the Stateless Hash-Based Digital Signature Algorithm
// https://csrc.nist.gov/pubs/fips/205/final
message SlhDsaParams {
// Required
int32 key_size = 1;
// Required.
SlhDsaHashType hash_type = 2;
// Required.
SlhDsaSignatureType sig_type = 3;
}
message SlhDsaKeyFormat {
uint32 version = 1;
// Required.
SlhDsaParams params = 2;
}
// key_type: type.googleapis.com/google.crypto.tink.SlhDsaPublicKey
message SlhDsaPublicKey {
// Required.
uint32 version = 1;
// Required.
bytes key_value = 2; // Placeholder for ctype.
// Required
SlhDsaParams params = 3;
}
// key_type: type.googleapis.com/google.crypto.tink.SlhDsaPrivateKey
message SlhDsaPrivateKey {
// Required.
uint32 version = 1;
// Required.
bytes key_value = 2; // Placeholder for ctype.
// Required. The corresponding public key.
SlhDsaPublicKey public_key = 3;
}
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