add secp256k1

btc-address/src/main.rs

@@ -1,3 +1,14 @@
+use rand::rngs::OsRng;
+use secp256k1::Secp256k1;
+
 fn main() {
     println!("Hello, world!");
+
+    let secp = Secp256k1::new();
+    let mut rng = OsRng::new().expect("OsRng");
+    let (secret_key, public_key) = secp.generate_keypair(&mut rng);
+
+    println!("{}", secret_key);
+    println!("{}", public_key);
+    println!("{}", hex::encode(public_key.serialize_uncompressed().to_vec()));
 }