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/*
* Copyright 2023 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.
*/
#ifndef PRIVATE_JOIN_AND_COMPUTE_ANONYMOUS_COUNTING_TOKENS_ACT_V0_PARAMETERS_H_
#define PRIVATE_JOIN_AND_COMPUTE_ANONYMOUS_COUNTING_TOKENS_ACT_V0_PARAMETERS_H_
#include <string>
#include "act/act.pb.h"
#include "private_join_and_compute/crypto/openssl.inc"
namespace private_join_and_compute {
namespace anonymous_counting_tokens {
const int kDefaultSecurityParameter = 128;
const int kDefaultChallengeLength = 128;
const int kDefaultCamenischShoupS = 1;
const int kDefaultCurveId = NID_X9_62_prime256v1;
const int kDefaultModulusLengthBits = 3072;
// Returns parameters appropriate only for testing (smaller modulus of 1536
// bits, smaller batch size of 3).
SchemeParameters ActV0TestSchemeParameters();
// Returns parameters supporting 16 messages in a batch, with both Pedersen and
// CS parameters set to 16, and modulus length 3072.
SchemeParameters ActV0Batch16SchemeParameters();
// Returns parameters supporting 32 messages in a batch, with both Pedersen and
// CS parameters set to 32, and modulus length 3072.
SchemeParameters ActV0Batch32SchemeParameters();
// Returns parameters supporting 32 messages in a batch, with CS vector
// encryption length set to 2, and modulus length 2048.
//
// These parameters are currently the best-optimized for performance.
SchemeParameters
ActV0SchemeParametersPedersen32Modulus2048CamenischShoupVector2();
// Returns custom parameters.
SchemeParameters ActV0SchemeParameters(int pedersen_batch_size,
int modulus_length_bits,
int camenisch_shoup_vector_length);
} // namespace anonymous_counting_tokens
} // namespace private_join_and_compute
#endif // PRIVATE_JOIN_AND_COMPUTE_ANONYMOUS_COUNTING_TOKENS_ACT_V0_PARAMETERS_H_
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