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ckks.cpp
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ckks.cpp
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
#include "seal/seal.h"
#include "seal/util/rlwe.h"
#include "bench.h"
using namespace benchmark;
using namespace sealbench;
using namespace seal;
using namespace std;
/**
This file defines benchmarks for CKKS-specific HE primitives.
*/
namespace sealbench
{
void bm_ckks_encrypt_secret(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
Plaintext &pt = bm_env->pt()[0];
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_pt_ckks(pt);
state.ResumeTiming();
bm_env->encryptor()->encrypt_symmetric(pt, ct[2]);
}
}
void bm_ckks_encrypt_public(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
Plaintext &pt = bm_env->pt()[0];
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_pt_ckks(pt);
state.ResumeTiming();
bm_env->encryptor()->encrypt(pt, ct[2]);
}
}
void bm_ckks_decrypt(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
Plaintext &pt = bm_env->pt()[0];
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
state.ResumeTiming();
bm_env->decryptor()->decrypt(ct[0], pt);
}
}
void bm_ckks_encode_double(State &state, shared_ptr<BMEnv> bm_env)
{
vector<double> &msg = bm_env->msg_double();
Plaintext &pt = bm_env->pt()[0];
parms_id_type parms_id = bm_env->context().first_parms_id();
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_message_double(msg);
state.ResumeTiming();
bm_env->ckks_encoder()->encode(msg, parms_id, scale, pt);
}
}
void bm_ckks_decode_double(State &state, shared_ptr<BMEnv> bm_env)
{
vector<double> &msg = bm_env->msg_double();
Plaintext &pt = bm_env->pt()[0];
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_pt_ckks(pt);
state.ResumeTiming();
bm_env->ckks_encoder()->decode(pt, msg);
}
}
void bm_ckks_add_ct(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
bm_env->randomize_ct_ckks(ct[1]);
ct[1].scale() = scale;
state.ResumeTiming();
Ciphertext res;
bm_env->evaluator()->add(ct[0], ct[1], res);
}
}
void bm_ckks_add_pt(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
Plaintext &pt = bm_env->pt()[0];
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
bm_env->randomize_pt_ckks(pt);
pt.scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->add_plain(ct[0], pt, ct[2]);
}
}
void bm_ckks_negate(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->negate(ct[0], ct[2]);
}
}
void bm_ckks_sub_ct(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
bm_env->randomize_ct_ckks(ct[1]);
ct[1].scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->sub(ct[0], ct[1], ct[2]);
}
}
void bm_ckks_sub_pt(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
Plaintext &pt = bm_env->pt()[0];
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
bm_env->randomize_pt_ckks(pt);
pt.scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->sub_plain(ct[0], pt, ct[2]);
}
}
void bm_ckks_mul_ct(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
bm_env->randomize_ct_ckks(ct[1]);
ct[1].scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->multiply(ct[0], ct[1], ct[2]);
}
}
void bm_ckks_mul_pt(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
Plaintext &pt = bm_env->pt()[0];
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
bm_env->randomize_pt_ckks(pt);
pt.scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->multiply_plain(ct[0], pt, ct[2]);
}
}
void bm_ckks_square(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
double scale = bm_env->safe_scale();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
bm_env->randomize_ct_ckks(ct[1]);
ct[1].scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->square(ct[0], ct[2]);
}
}
void bm_ckks_rescale_inplace(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
double scale = bm_env->safe_scale() * pow(2.0, 20);
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
ct[0].scale() = scale;
state.ResumeTiming();
bm_env->evaluator()->rescale_to_next_inplace(ct[0]);
}
}
void bm_ckks_relin_inplace(State &state, shared_ptr<BMEnv> bm_env)
{
Ciphertext ct;
for (auto _ : state)
{
state.PauseTiming();
ct.resize(bm_env->context(), size_t(3));
bm_env->randomize_ct_ckks(ct);
state.ResumeTiming();
bm_env->evaluator()->relinearize_inplace(ct, bm_env->rlk());
}
}
void bm_ckks_rotate(State &state, shared_ptr<BMEnv> bm_env)
{
vector<Ciphertext> &ct = bm_env->ct();
for (auto _ : state)
{
state.PauseTiming();
bm_env->randomize_ct_ckks(ct[0]);
state.ResumeTiming();
bm_env->evaluator()->rotate_vector(ct[0], 1, bm_env->glk(), ct[2]);
}
}
} // namespace sealbench