initial
This commit is contained in:
commit
3e424f1477
4 changed files with 248 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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@ -0,0 +1 @@
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/target
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202
Cargo.lock
generated
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202
Cargo.lock
generated
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@ -0,0 +1,202 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "autocfg"
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[[package]]
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"crossbeam-epoch",
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"crossbeam-utils",
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[[package]]
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"autocfg",
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"cfg-if",
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"crossbeam-utils",
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"memoffset",
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"scopeguard",
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[[package]]
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"num-integer",
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"num-traits",
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"rand",
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"rayon",
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]
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[[package]]
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"autocfg",
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"num-integer",
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"num-traits",
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"rand",
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]
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"autocfg",
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"num-traits",
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[[package]]
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name = "num-traits"
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"autocfg",
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[[package]]
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name = "rand"
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dependencies = [
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"libc",
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"rand_chacha",
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"rand_core",
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]
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[[package]]
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name = "rand_chacha"
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dependencies = [
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"ppv-lite86",
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"rand_core",
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[[package]]
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name = "rand_core"
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"getrandom",
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]
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[[package]]
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name = "rayon"
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dependencies = [
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"either",
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"rayon-core",
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]
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[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"crossbeam-deque",
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"crossbeam-utils",
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]
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[[package]]
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name = "really-big-primes"
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version = "0.1.0"
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dependencies = [
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"miller_rabin",
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"num-bigint",
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"rand",
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"rayon",
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]
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[[package]]
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name = "scopeguard"
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version = "1.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
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[[package]]
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name = "wasi"
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version = "0.11.0+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
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12
Cargo.toml
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12
Cargo.toml
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[package]
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name = "really-big-primes"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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miller_rabin = "1.1.1"
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num-bigint = "0.4.4"
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rand = "0.8.5"
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rayon = "1.8.0"
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33
src/main.rs
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33
src/main.rs
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use num_bigint::BigUint;
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use rand::{rngs::OsRng, RngCore};
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use rayon::iter::repeat;
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use rayon::prelude::*;
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const k: usize = 24;
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fn main() {
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println!("Hello, world!");
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}
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fn get_prime(n: usize) -> BigUint {
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repeat(())
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.map(|_| {
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let int = get_random_n_bit_integer(n);
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if miller_rabin::is_prime(&int, k) {
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Some(int)
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} else {
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None
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}
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})
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.find_any(|p| p.is_some())
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.unwrap()
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.unwrap()
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}
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fn get_random_n_bit_integer(n: usize) -> BigUint {
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let mut key = vec![0u8; n];
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OsRng.fill_bytes(&mut key[..]);
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let mut random_integer = BigUint::from_bytes_be(&key);
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random_integer.set_bit(n as u64 - 1, true);
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random_integer
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}
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