sam.hadow/homomorphic-encryption
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encryption working independently of theta

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Sam Hadow
2025-04-30 18:10:01 +02:00
parent a23f476f52
commit 69f92c2e1b
2 changed files with 12 additions and 4 deletions
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3
Cargo.toml
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@ -8,3 +8,6 @@ edition = "2021"
[dependencies] [dependencies]
rand = "0.9.1" rand = "0.9.1"
rug = "1.27.0" rug = "1.27.0"
[dev-dependencies]
rayon = "1.10.0"

13
src/dghv_asym.rs
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@ -40,10 +40,13 @@ pub fn encrypt_bit_asym(m: u8, pk: &PublicKey, rho: u32) -> Integer {
let mut rng = StdRng::from_os_rng(); let mut rng = StdRng::from_os_rng();
let x0 = &pk.xs[0]; let x0 = &pk.xs[0];
let num_keys = &pk.xs.len();
let proba: f64 = 2f64 / (*num_keys as f64);
// random x_i // random x_i
let mut sum = Integer::from(0); let mut sum = Integer::from(0);
for x in pk.xs.iter().skip(1) { for x in pk.xs.iter().skip(1) {
if rng.random_bool(0.1) { if rng.random_bool(proba) {
sum += x; sum += x;
} }
} }
@ -84,18 +87,20 @@ mod tests {
#[test] #[test]
fn test_encrypt_decrypt_bit() { fn test_encrypt_decrypt_bit() {
use rayon::prelude::*;
let eta: u32 = 10000; let eta: u32 = 10000;
let gamma: u32 = 11000; let gamma: u32 = 11000;
let theta: usize = 20; let theta: usize = 50;
let rho: u32 = 128; let rho: u32 = 128;
for _ in 0..=255 { (0..=127).into_par_iter().for_each(|_| {
let (sk, pk) = generate_keys(gamma, eta, rho, theta); let (sk, pk) = generate_keys(gamma, eta, rho, theta);
for &m in &[0u8, 1u8] { for &m in &[0u8, 1u8] {
let c = encrypt_bit_asym(m, &pk, rho); let c = encrypt_bit_asym(m, &pk, rho);
let m2 = decrypt_bit(&c, &sk.p); let m2 = decrypt_bit(&c, &sk.p);
assert_eq!(m, m2); assert_eq!(m, m2);
} }
} });
} }
} }