tfhe-rs/apps/trivium/benches/kreyvium_shortint.rs

use criterion::Criterion;
use tfhe::prelude::*;
use tfhe::shortint::parameters::v1_0::{
    V1_0_PARAM_KEYSWITCH_1_1_KS_PBS_TO_2_2_KS_PBS_GAUSSIAN_2M128,
    V1_0_PARAM_MESSAGE_1_CARRY_1_KS_PBS_GAUSSIAN_2M128,
    V1_0_PARAM_MESSAGE_2_CARRY_2_KS_PBS_GAUSSIAN_2M128,
};
use tfhe::shortint::prelude::*;
use tfhe::{generate_keys, ConfigBuilder, FheUint64};
use tfhe_trivium::{KreyviumStreamShortint, TransCiphering};

pub fn kreyvium_shortint_warmup(c: &mut Criterion) {
    let config = ConfigBuilder::default()
        .use_custom_parameters(V1_0_PARAM_MESSAGE_2_CARRY_2_KS_PBS_GAUSSIAN_2M128)
        .build();
    let (hl_client_key, hl_server_key) = generate_keys(config);
    let underlying_ck: tfhe::shortint::ClientKey = (*hl_client_key.as_ref()).clone().into();
    let underlying_sk: tfhe::shortint::ServerKey = (*hl_server_key.as_ref()).clone().into();

    let (client_key, server_key): (ClientKey, ServerKey) =
        gen_keys(V1_0_PARAM_MESSAGE_1_CARRY_1_KS_PBS_GAUSSIAN_2M128);

    let ksk = KeySwitchingKey::new(
        (&client_key, Some(&server_key)),
        (&underlying_ck, &underlying_sk),
        V1_0_PARAM_KEYSWITCH_1_1_KS_PBS_TO_2_2_KS_PBS_GAUSSIAN_2M128,
    );

    let key_string = "0053A6F94C9FF24598EB000000000000".to_string();
    let mut key = [0; 128];

    for i in (0..key_string.len()).step_by(2) {
        let mut val = u64::from_str_radix(&key_string[i..i + 2], 16).unwrap();
        for j in 0..8 {
            key[8 * (i >> 1) + j] = val % 2;
            val >>= 1;
        }
    }

    let iv_string = "0D74DB42A91077DE45AC000000000000".to_string();
    let mut iv = [0; 128];

    for i in (0..iv_string.len()).step_by(2) {
        let mut val = u64::from_str_radix(&iv_string[i..i + 2], 16).unwrap();
        for j in 0..8 {
            iv[8 * (i >> 1) + j] = val % 2;
            val >>= 1;
        }
    }

    c.bench_function("kreyvium 1_1 warmup", |b| {
        b.iter(|| {
            let cipher_key = key.map(|x| client_key.encrypt(x));
            let _kreyvium = KreyviumStreamShortint::new(
                cipher_key,
                iv,
                server_key.clone(),
                ksk.clone(),
                hl_server_key.clone(),
            );
        })
    });
}

pub fn kreyvium_shortint_gen(c: &mut Criterion) {
    let config = ConfigBuilder::default()
        .use_custom_parameters(V1_0_PARAM_MESSAGE_2_CARRY_2_KS_PBS_GAUSSIAN_2M128)
        .build();
    let (hl_client_key, hl_server_key) = generate_keys(config);
    let underlying_ck: tfhe::shortint::ClientKey = (*hl_client_key.as_ref()).clone().into();
    let underlying_sk: tfhe::shortint::ServerKey = (*hl_server_key.as_ref()).clone().into();

    let (client_key, server_key): (ClientKey, ServerKey) =
        gen_keys(V1_0_PARAM_MESSAGE_1_CARRY_1_KS_PBS_GAUSSIAN_2M128);

    let ksk = KeySwitchingKey::new(
        (&client_key, Some(&server_key)),
        (&underlying_ck, &underlying_sk),
        V1_0_PARAM_KEYSWITCH_1_1_KS_PBS_TO_2_2_KS_PBS_GAUSSIAN_2M128,
    );

    let key_string = "0053A6F94C9FF24598EB000000000000".to_string();
    let mut key = [0; 128];

    for i in (0..key_string.len()).step_by(2) {
        let mut val = u64::from_str_radix(&key_string[i..i + 2], 16).unwrap();
        for j in 0..8 {
            key[8 * (i >> 1) + j] = val % 2;
            val >>= 1;
        }
    }

    let iv_string = "0D74DB42A91077DE45AC000000000000".to_string();
    let mut iv = [0; 128];

    for i in (0..iv_string.len()).step_by(2) {
        let mut val = u64::from_str_radix(&iv_string[i..i + 2], 16).unwrap();
        for j in 0..8 {
            iv[8 * (i >> 1) + j] = val % 2;
            val >>= 1;
        }
    }

    let cipher_key = key.map(|x| client_key.encrypt(x));

    let mut kreyvium = KreyviumStreamShortint::new(cipher_key, iv, server_key, ksk, hl_server_key);

    c.bench_function("kreyvium 1_1 generate 64 bits", |b| {
        b.iter(|| kreyvium.next_64())
    });
}

pub fn kreyvium_shortint_trans(c: &mut Criterion) {
    let config = ConfigBuilder::default()
        .use_custom_parameters(V1_0_PARAM_MESSAGE_2_CARRY_2_KS_PBS_GAUSSIAN_2M128)
        .build();
    let (hl_client_key, hl_server_key) = generate_keys(config);
    let underlying_ck: tfhe::shortint::ClientKey = (*hl_client_key.as_ref()).clone().into();
    let underlying_sk: tfhe::shortint::ServerKey = (*hl_server_key.as_ref()).clone().into();

    let (client_key, server_key): (ClientKey, ServerKey) =
        gen_keys(V1_0_PARAM_MESSAGE_1_CARRY_1_KS_PBS_GAUSSIAN_2M128);

    let ksk = KeySwitchingKey::new(
        (&client_key, Some(&server_key)),
        (&underlying_ck, &underlying_sk),
        V1_0_PARAM_KEYSWITCH_1_1_KS_PBS_TO_2_2_KS_PBS_GAUSSIAN_2M128,
    );

    let key_string = "0053A6F94C9FF24598EB000000000000".to_string();
    let mut key = [0; 128];

    for i in (0..key_string.len()).step_by(2) {
        let mut val = u64::from_str_radix(&key_string[i..i + 2], 16).unwrap();
        for j in 0..8 {
            key[8 * (i >> 1) + j] = val % 2;
            val >>= 1;
        }
    }

    let iv_string = "0D74DB42A91077DE45AC000000000000".to_string();
    let mut iv = [0; 128];

    for i in (0..iv_string.len()).step_by(2) {
        let mut val = u64::from_str_radix(&iv_string[i..i + 2], 16).unwrap();
        for j in 0..8 {
            iv[8 * (i >> 1) + j] = val % 2;
            val >>= 1;
        }
    }

    let cipher_key = key.map(|x| client_key.encrypt(x));

    let ciphered_message = FheUint64::try_encrypt(0u64, &hl_client_key).unwrap();
    let mut kreyvium = KreyviumStreamShortint::new(cipher_key, iv, server_key, ksk, hl_server_key);

    c.bench_function("kreyvium 1_1 transencrypt 64 bits", |b| {
        b.iter(|| kreyvium.trans_encrypt_64(ciphered_message.clone()))
    });
}