chore: reorg

__crypto/btc-address/src/main.rs

@@ -0,0 +1,88 @@
+use std::{ thread, sync::{ Arc, Mutex } };
+use rand::rngs::OsRng;
+use secp256k1::{ Secp256k1, key::PublicKey };
+use sha2::Sha256;
+use ripemd160::Ripemd160;
+use digest::{ Input, FixedOutput };
+
+const PREFIX: &[&str] = &["1Hatter"];
+
+fn main() {
+    println!("Prefix: {:?}", PREFIX);
+
+    let num_of_vcpus = num_cpus::get();
+    let num_of_phycpus = num_cpus::get_physical();
+    println!("You have {} vCPUs, from {} phyCPUs", num_of_vcpus, num_of_phycpus);
+
+    let stop_flag = Arc::new(Mutex::new(false));
+    let mut handles = vec![];
+    for ind in 0..num_of_phycpus {
+        println!("- Running task {} of {}", ind, num_of_phycpus);
+        let the_stop_flag = Arc::clone(&stop_flag);
+        let child = thread::spawn(move || {
+            run_one_task(ind, the_stop_flag);
+        });
+        handles.push(child);
+    }
+    while let Some(h) = handles.pop() {
+        h.join().unwrap();
+    }
+    println!("Finished!");
+}
+
+fn run_one_task(ind: usize, the_stop_flag: Arc<Mutex<bool>>) {
+    let secp = Secp256k1::new();
+    let mut rng = OsRng::new().expect("OsRng");
+
+    for i in 0..10_000_000 {
+        let (secret_key, public_key) = secp.generate_keypair(&mut rng);
+
+        let s = make_btc_address(&public_key);
+
+        if i % 1_000 == 0 {
+            if *the_stop_flag.lock().unwrap() {
+                return;
+            }
+            if i > 0 && i % 100_000 == 0 {
+                println!("> {} - {}", ind, i);
+            }
+        }
+        if PREFIX.iter().any(|p| s.starts_with(p)) {
+            println!("{}", s);
+            println!("{}", secret_key);
+
+            *the_stop_flag.lock().unwrap() = true;
+            break;
+        }
+    }
+}
+
+fn make_btc_address(public_key: &PublicKey) -> String {
+    let public_key_bytes = public_key.serialize_uncompressed().to_vec();
+    let riphemd160_sha256_pub_key = calc_ripemd160(&calc_sha256(&public_key_bytes));
+
+    let mut btc_addr = Vec::<u8>::with_capacity(25);
+    btc_addr.push(0x00 as u8);
+    btc_addr.extend_from_slice(&riphemd160_sha256_pub_key);
+
+    let checksum = &calc_sha256(&calc_sha256(&btc_addr))[0..4];
+    btc_addr.extend_from_slice(checksum);
+
+    bs58::encode(&btc_addr).into_string()
+}
+
+#[inline]
+fn calc_sha256(i: &[u8]) -> Vec<u8> {
+    calc_hash(Sha256::default(), i)
+}
+
+#[inline]
+fn calc_ripemd160(i: &[u8]) -> Vec<u8> {
+    calc_hash(Ripemd160::default(), i)
+}
+
+#[inline]
+fn calc_hash<T>(mut hasher: T, i: &[u8]) -> Vec<u8> where T: Input + FixedOutput {
+    hasher.input(&i);
+    hasher.fixed_result().to_vec()
+}