poulpy/rlwe/examples/encryption.rs
rlwe/examples/encryption.rsRaw
1use base2k::{Encoding, FFT64, SvpPPolOps, VecZnxApi, VecZnx};
2use rlwe::{
3 ciphertext::Ciphertext,
4 decryptor::{Decryptor, decrypt_rlwe_thread_safe_tmp_byte},
5 encryptor::{EncryptorSk, encrypt_rlwe_sk_tmp_bytes},
6 keys::SecretKey,
7 parameters::{Parameters, ParametersLiteral},
8 plaintext::Plaintext,
9};
10use sampling::source::{Source, new_seed};
11
12fn main() {
13 let params_lit: ParametersLiteral = ParametersLiteral {
14 log_n: 10,
15 log_q: 54,
16 log_p: 0,
17 log_base2k: 17,
18 log_scale: 20,
19 xe: 3.2,
20 xs: 128,
21 };
22
23 let params: Parameters = Parameters::new::<FFT64>(¶ms_lit);
24
25 let mut tmp_bytes: Vec<u8> = vec![
26 0u8;
27 params.decrypt_rlwe_thread_safe_tmp_byte(params.log_q())
28 | params.encrypt_rlwe_sk_tmp_bytes(params.log_q())
29 ];
30
31 let mut source: Source = Source::new([0; 32]);
32 let mut sk: SecretKey = SecretKey::new(params.module());
33 //sk.fill_ternary_hw(params.xs(), &mut source);
34 sk.0.0[0] = 1;
35
36 let mut want = vec![i64::default(); params.n()];
37
38 want.iter_mut().enumerate().for_each(|(i, x)| *x = i as i64);
39
40 let mut pt: Plaintext<VecZnx> = params.new_plaintext(params.log_q());
41
42 let log_base2k = pt.log_base2k();
43
44 let log_k: usize = params.log_q() - 20;
45
46 pt.0.value[0].encode_vec_i64(log_base2k, log_k, &want, 32);
47 pt.0.value[0].normalize(log_base2k, &mut tmp_bytes);
48
49 println!("log_k: {}", log_k);
50 pt.0.value[0].print_limbs(pt.limbs(), 16);
51 println!();
52
53 let mut ct: Ciphertext = params.new_ciphertext(params.log_q());
54
55 let mut source_xe: Source = Source::new([1; 32]);
56 let mut source_xa: Source = Source::new([2; 32]);
57
58 let mut sk_svp_ppol: base2k::SvpPPol = params.module().new_svp_ppol();
59 params.module().svp_prepare(&mut sk_svp_ppol, &sk.0);
60
61 params.encrypt_rlwe_sk_thread_safe(
62 &mut ct,
63 Some(&pt),
64 &sk_svp_ppol,
65 &mut source_xa,
66 &mut source_xe,
67 &mut tmp_bytes,
68 );
69
70 params.decrypt_rlwe_thread_safe(&mut pt, &ct, &sk_svp_ppol, &mut tmp_bytes);
71
72 pt.0.value[0].print_limbs(pt.limbs(), 16);
73
74 let mut have = vec![i64::default(); params.n()];
75
76 println!("pt: {}", log_k);
77 pt.0.value[0].decode_vec_i64(pt.log_base2k(), log_k, &mut have);
78
79 println!("want: {:?}", &want[..16]);
80 println!("have: {:?}", &have[..16]);
81}