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// Copyright 2021 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
//
// https://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 s2a.proto;
option go_package = "github.com/google/s2a/internal/proto/common_go_proto";
// The ciphersuites supported by S2A. The name determines the confidentiality,
// and authentication ciphers as well as the hash algorithm used for PRF in
// TLS 1.2 or HKDF in TLS 1.3. Thus, the components of the name are:
// - AEAD -- for encryption and authentication, e.g., AES_128_GCM.
// - Hash algorithm -- used in PRF or HKDF, e.g., SHA256.
enum Ciphersuite {
AES_128_GCM_SHA256 = 0;
AES_256_GCM_SHA384 = 1;
CHACHA20_POLY1305_SHA256 = 2;
}
// The TLS versions supported by S2A's handshaker module.
enum TLSVersion {
TLS1_2 = 0;
TLS1_3 = 1;
}
message Identity {
oneof identity_oneof {
// The SPIFFE ID of a connection endpoint.
string spiffe_id = 1;
// The hostname of a connection endpoint.
string hostname = 2;
// The UID of a connection endpoint.
string uid = 4;
// The username of a connection endpoint.
string username = 5;
// The GCP ID of a connection endpoint.
string gcp_id = 6;
}
// Additional identity-specific attributes.
map<string, string> attributes = 3;
}
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