use bitcoin::blockdata::script::{Script, Builder};
use bitcoin::blockdata::opcodes;
use bitcoin::network::constants::Network;
-use bitcoin::util::hash::Hash160;
use bitcoin::util::bip32::{ExtendedPrivKey, ExtendedPubKey, ChildNumber};
+use bitcoin_hashes::{Hash, HashEngine};
+use bitcoin_hashes::sha256::Hash as Sha256;
+use bitcoin_hashes::hash160::Hash as Hash160;
+
use secp256k1::key::{SecretKey, PublicKey};
use secp256k1::Secp256k1;
use secp256k1;
-use crypto::digest::Digest;
-
-use util::sha2::Sha256;
use util::logger::Logger;
use util::rng;
use util::byte_utils;
/// Cooperative closes may use seed/2'
/// The two close keys may be needed to claim on-chain funds!
pub struct KeysManager {
- secp_ctx: Secp256k1<secp256k1::All>,
+ secp_ctx: Secp256k1<secp256k1::SignOnly>,
node_secret: SecretKey,
destination_script: Script,
shutdown_pubkey: PublicKey,
/// Constructs a KeysManager from a 32-byte seed. If the seed is in some way biased (eg your
/// RNG is busted) this may panic.
pub fn new(seed: &[u8; 32], network: Network, logger: Arc<Logger>) -> KeysManager {
- let secp_ctx = Secp256k1::new();
- match ExtendedPrivKey::new_master(&secp_ctx, network.clone(), seed) {
+ let secp_ctx = Secp256k1::signing_only();
+ match ExtendedPrivKey::new_master(network.clone(), seed) {
Ok(master_key) => {
let node_secret = master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx(0)).expect("Your RNG is busted").secret_key;
let destination_script = match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx(1)) {
Ok(destination_key) => {
- let pubkey_hash160 = Hash160::from_data(&ExtendedPubKey::from_private(&secp_ctx, &destination_key).public_key.serialize()[..]);
- Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0)
- .push_slice(pubkey_hash160.as_bytes())
+ let pubkey_hash160 = Hash160::hash(&ExtendedPubKey::from_private(&secp_ctx, &destination_key).public_key.serialize()[..]);
+ Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0)
+ .push_slice(&pubkey_hash160.into_inner())
.into_script()
},
Err(_) => panic!("Your RNG is busted"),
// entropy, everything else just ensures uniqueness. We generally don't expect
// all clients to have non-broken RNGs here, so we also include the current
// time as a fallback to get uniqueness.
- let mut sha = Sha256::new();
+ let mut sha = Sha256::engine();
let mut seed = [0u8; 32];
rng::fill_bytes(&mut seed[..]);
let child_privkey = self.channel_master_key.ckd_priv(&self.secp_ctx, ChildNumber::from_hardened_idx(child_ix as u32)).expect("Your RNG is busted");
sha.input(&child_privkey.secret_key[..]);
- sha.result(&mut seed);
+ seed = Sha256::from_engine(sha).into_inner();
let commitment_seed = {
- let mut sha = Sha256::new();
+ let mut sha = Sha256::engine();
sha.input(&seed);
sha.input(&b"commitment seed"[..]);
- let mut res = [0; 32];
- sha.result(&mut res);
- res
+ Sha256::from_engine(sha).into_inner()
};
macro_rules! key_step {
($info: expr, $prev_key: expr) => {{
- let mut sha = Sha256::new();
+ let mut sha = Sha256::engine();
sha.input(&seed);
sha.input(&$prev_key[..]);
sha.input(&$info[..]);
- let mut res = [0; 32];
- sha.result(&mut res);
- SecretKey::from_slice(&self.secp_ctx, &res).expect("SHA-256 is busted")
+ SecretKey::from_slice(&Sha256::from_engine(sha).into_inner()).expect("SHA-256 is busted")
}}
}
let funding_key = key_step!(b"funding key", commitment_seed);
}
fn get_session_key(&self) -> SecretKey {
- let mut sha = Sha256::new();
- let mut res = [0u8; 32];
+ let mut sha = Sha256::engine();
let now = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time went backwards");
sha.input(&byte_utils::be32_to_array(now.subsec_nanos()));
let child_ix = self.session_child_index.fetch_add(1, Ordering::AcqRel);
let child_privkey = self.session_master_key.ckd_priv(&self.secp_ctx, ChildNumber::from_hardened_idx(child_ix as u32)).expect("Your RNG is busted");
sha.input(&child_privkey.secret_key[..]);
- sha.result(&mut res);
- SecretKey::from_slice(&self.secp_ctx, &res).expect("Your RNG is busted")
+ SecretKey::from_slice(&Sha256::from_engine(sha).into_inner()).expect("Your RNG is busted")
}
}