number generation

.gitignore

@@ -1,2 +1,4 @@
 /target
 *.pdf
+
+Cargo.lock

Cargo.lock

@@ -1,7 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "homomorphic-encryption"
-version = "0.1.0"

src/main.rs

@@ -1,16 +1,21 @@
 mod dghv;
+mod dghv_asym;
+mod utils;
 use crate::dghv::{decrypt_bit, encrypt_bit, generate_secret_key};
 
 fn main() {
-    let eta = 64;
+    let eta = 10000;
     let secret_key = generate_secret_key(eta);
 
     let bit = 1;
-    let ciphertext = encrypt_bit(bit, &secret_key);
+    let ciphertext = encrypt_bit(bit, &secret_key, 10000, 512);
     let decrypted = decrypt_bit(&ciphertext, &secret_key);
+    let opx2 = ciphertext.clone() * encrypt_bit(1, &secret_key, 10000, 512);
+    let decrypted_opx2 = decrypt_bit(&opx2, &secret_key);
 
     println!("clear bit (b): {}", bit);
     println!("Secret key (p): {}", secret_key);
     println!("Encrypted bit (c): {}", ciphertext);
     println!("decrypted bit : {}", decrypted);
+    println!("decrypted bit AND 1: {}", decrypted_opx2);
 }

src/utils.rs

@@ -4,9 +4,15 @@ use rand::SeedableRng;
 use rug::Integer;
 
 pub fn generate_random_odd_integer(num_bits: u32) -> Integer {
-    std::iter::repeat_with(|| generate_random_integer(num_bits))
-        .find(|p: &Integer| p.is_odd())
-        .unwrap()
+    let mut rng = StdRng::from_os_rng();
+    let mut x = Integer::from(1);
+    for _ in 1..(num_bits-1) {
+        x <<= 1;
+        x += rng.random_range(0..=1);
+    }
+    x <<= 1;
+    x += 1;
+    x
 }
 
 pub fn generate_random_integer(num_bits: u32) -> Integer {