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// Copyright 2018 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 RSA SSA (Signature Schemes with Appendix) using PSS
// (Probabilistic Signature Scheme ) encoding
// (https://tools.ietf.org/html/rfc8017#section-8.1).
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/google/tink/go/proto/rsa_ssa_pss_go_proto";
message RsaSsaPssParams {
// Hash function used in computing hash of the signing message
// (see https://tools.ietf.org/html/rfc8017#section-9.1.1).
// Required.
HashType sig_hash = 1;
// Hash function used in MGF1 (a mask generation function based on a
// hash function) (see https://tools.ietf.org/html/rfc8017#appendix-B.2.1).
// Required.
HashType mgf1_hash = 2;
// Salt length (see https://tools.ietf.org/html/rfc8017#section-9.1.1)
// Required.
int32 salt_length = 3;
}
// key_type: type.googleapis.com/google.crypto.tink.RsaSsaPssPublicKey
message RsaSsaPssPublicKey {
// Required.
uint32 version = 1;
// Required.
RsaSsaPssParams params = 2;
// Modulus.
// Unsigned big integer in bigendian representation.
bytes n = 3;
// Public exponent.
// Unsigned big integer in bigendian representation.
bytes e = 4;
}
// key_type: type.googleapis.com/google.crypto.tink.RsaSsaPssPrivateKey
message RsaSsaPssPrivateKey {
// Required.
uint32 version = 1;
// Required.
RsaSsaPssPublicKey public_key = 2;
// Private exponent.
// Unsigned big integer in bigendian representation.
// Required.
bytes d = 3;
// The following parameters are used to optimize RSA signature computation.
// The prime factor p of n.
// Unsigned big integer in bigendian representation.
// Required.
bytes p = 4;
// The prime factor q of n.
// Unsigned big integer in bigendian representation.
// Required.
bytes q = 5;
// d mod (p - 1).
// Unsigned big integer in bigendian representation.
// Required.
bytes dp = 6;
// d mod (q - 1).
// Unsigned big integer in bigendian representation.
// Required.
bytes dq = 7;
// Chinese Remainder Theorem coefficient q^(-1) mod p.
// Unsigned big integer in bigendian representation.
// Required.
bytes crt = 8;
}
message RsaSsaPssKeyFormat {
// Required.
RsaSsaPssParams params = 1;
// Required.
uint32 modulus_size_in_bits = 2;
// Required.
bytes public_exponent = 3;
}
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