phantom-zone/examples/non_interactive_fhebool.rs
examples/non_interactive_fhebool.rsRaw
1use itertools::Itertools;
2use rand::{thread_rng, RngCore};
3
4use phantom_zone::*;
5
6fn main() {
7 set_parameter_set(ParameterSelector::NonInteractiveLTE2Party);
8
9 let mut seed = [0u8; 32];
10 thread_rng().fill_bytes(&mut seed);
11 set_common_reference_seed(seed);
12
13 let parties = 2;
14
15 let cks = (0..parties).map(|_| gen_client_key()).collect_vec();
16
17 let s_key_shares = cks
18 .iter()
19 .enumerate()
20 .map(|(user_id, k)| gen_server_key_share(user_id, parties, k))
21 .collect_vec();
22
23 let server_key = aggregate_server_key_shares(&s_key_shares);
24 server_key.set_server_key();
25
26 let m00 = true;
27 let m01 = false;
28 let m10 = true;
29 let m11 = false;
30
31 let c0 = cks[0].encrypt(vec![m00, m01].as_slice());
32 let c1 = cks[1].encrypt(vec![m10, m11].as_slice());
33
34 let (enc_m00, enc_m01) = {
35 let mut tmp = c0.unseed::<Vec<Vec<u64>>>().key_switch(0).extract_all();
36 (tmp.swap_remove(0), tmp.swap_remove(0))
37 };
38
39 let (enc_m10, enc_m11) = {
40 let mut tmp = c1.unseed::<Vec<Vec<u64>>>().key_switch(1).extract_all();
41 (tmp.swap_remove(0), tmp.swap_remove(0))
42 };
43
44 let enc_out = &(&enc_m00 & &enc_m10) | &(&enc_m01 ^ &enc_m11);
45 let out = (m00 & m10) | (m10 ^ m11);
46
47 let dec_shares = cks
48 .iter()
49 .map(|k| k.gen_decryption_share(&enc_out))
50 .collect_vec();
51 let out_back = cks[0].aggregate_decryption_shares(&enc_out, &dec_shares);
52
53 assert!(out == out_back);
54}