|
| 1 | +use std::collections::BTreeMap; |
| 2 | +use std::str::FromStr; |
| 3 | + |
| 4 | +use bitcoin::consensus::serialize; |
| 5 | +use bitcoin::util::sighash::SighashCache; |
| 6 | +use bitcoin::{PackedLockTime, PrivateKey}; |
| 7 | +use bitcoind::bitcoincore_rpc::jsonrpc::base64; |
| 8 | +use bitcoind::bitcoincore_rpc::RawTx; |
| 9 | +use miniscript::bitcoin::consensus::encode::deserialize; |
| 10 | +use miniscript::bitcoin::hashes::hex::FromHex; |
| 11 | +use miniscript::bitcoin::util::psbt; |
| 12 | +use miniscript::bitcoin::util::psbt::PartiallySignedTransaction as Psbt; |
| 13 | +use miniscript::bitcoin::{ |
| 14 | + self, secp256k1, Address, Network, OutPoint, Script, Sequence, Transaction, TxIn, TxOut, |
| 15 | +}; |
| 16 | +use miniscript::psbt::{PsbtExt, PsbtInputExt}; |
| 17 | +use miniscript::Descriptor; |
| 18 | + |
| 19 | +fn main() { |
| 20 | + let secp256k1 = secp256k1::Secp256k1::new(); |
| 21 | + |
| 22 | + let s = "wsh(t:or_c(pk(027a3565454fe1b749bccaef22aff72843a9c3efefd7b16ac54537a0c23f0ec0de),v:thresh(1,pkh(032d672a1a91cc39d154d366cd231983661b0785c7f27bc338447565844f4a6813),a:pkh(03417129311ed34c242c012cd0a3e0b9bca0065f742d0dfb63c78083ea6a02d4d9),a:pkh(025a687659658baeabdfc415164528065be7bcaade19342241941e556557f01e28))))#7hut9ukn"; |
| 23 | + let bridge_descriptor = Descriptor::from_str(&s).unwrap(); |
| 24 | + //let bridge_descriptor = Descriptor::<bitcoin::PublicKey>::from_str(&s).expect("parse descriptor string"); |
| 25 | + assert!(bridge_descriptor.sanity_check().is_ok()); |
| 26 | + println!( |
| 27 | + "Bridge pubkey script: {}", |
| 28 | + bridge_descriptor.script_pubkey() |
| 29 | + ); |
| 30 | + println!( |
| 31 | + "Bridge address: {}", |
| 32 | + bridge_descriptor.address(Network::Regtest).unwrap() |
| 33 | + ); |
| 34 | + println!( |
| 35 | + "Weight for witness satisfaction cost {}", |
| 36 | + bridge_descriptor.max_satisfaction_weight().unwrap() |
| 37 | + ); |
| 38 | + |
| 39 | + let master_private_key_str = "cQhdvB3McbBJdx78VSSumqoHQiSXs75qwLptqwxSQBNBMDxafvaw"; |
| 40 | + let _master_private_key = |
| 41 | + PrivateKey::from_str(master_private_key_str).expect("Can't create private key"); |
| 42 | + println!( |
| 43 | + "Master public key: {}", |
| 44 | + _master_private_key.public_key(&secp256k1) |
| 45 | + ); |
| 46 | + |
| 47 | + let backup1_private_key_str = "cWA34TkfWyHa3d4Vb2jNQvsWJGAHdCTNH73Rht7kAz6vQJcassky"; |
| 48 | + let backup1_private = |
| 49 | + PrivateKey::from_str(backup1_private_key_str).expect("Can't create private key"); |
| 50 | + |
| 51 | + println!( |
| 52 | + "Backup1 public key: {}", |
| 53 | + backup1_private.public_key(&secp256k1) |
| 54 | + ); |
| 55 | + |
| 56 | + let backup2_private_key_str = "cPJFWUKk8sdL7pcDKrmNiWUyqgovimmhaaZ8WwsByDaJ45qLREkh"; |
| 57 | + let backup2_private = |
| 58 | + PrivateKey::from_str(backup2_private_key_str).expect("Can't create private key"); |
| 59 | + |
| 60 | + println!( |
| 61 | + "Backup2 public key: {}", |
| 62 | + backup2_private.public_key(&secp256k1) |
| 63 | + ); |
| 64 | + |
| 65 | + let backup3_private_key_str = "cT5cH9UVm81W5QAf5KABXb23RKNSMbMzMx85y6R2mF42L94YwKX6"; |
| 66 | + let _backup3_private = |
| 67 | + PrivateKey::from_str(backup3_private_key_str).expect("Can't create private key"); |
| 68 | + |
| 69 | + println!( |
| 70 | + "Backup3 public key: {}", |
| 71 | + _backup3_private.public_key(&secp256k1) |
| 72 | + ); |
| 73 | + |
| 74 | + let spend_tx = Transaction { |
| 75 | + version: 2, |
| 76 | + lock_time: PackedLockTime(5000), |
| 77 | + input: vec![], |
| 78 | + output: vec![], |
| 79 | + }; |
| 80 | + |
| 81 | + // Spend one input and spend one output for simplicity. |
| 82 | + let mut psbt = Psbt { |
| 83 | + unsigned_tx: spend_tx, |
| 84 | + unknown: BTreeMap::new(), |
| 85 | + proprietary: BTreeMap::new(), |
| 86 | + xpub: BTreeMap::new(), |
| 87 | + version: 0, |
| 88 | + inputs: vec![], |
| 89 | + outputs: vec![], |
| 90 | + }; |
| 91 | + |
| 92 | + let hex_tx = "020000000001018ff27041f3d738f5f84fd5ee62f1c5b36afebfb15f6da0c9d1382ddd0eaaa23c0000000000feffffff02b3884703010000001600142ca3b4e53f17991582d47b15a053b3201891df5200e1f50500000000220020c0ebf552acd2a6f5dee4e067daaef17b3521e283aeaa44a475278617e3d2238a0247304402207b820860a9d425833f729775880b0ed59dd12b64b9a3d1ab677e27e4d6b370700220576003163f8420fe0b9dc8df726cff22cbc191104a2d4ae4f9dfedb087fcec72012103817e1da42a7701df4db94db8576f0e3605f3ab3701608b7e56f92321e4d8999100000000"; |
| 93 | + let depo_tx: Transaction = deserialize(&Vec::<u8>::from_hex(hex_tx).unwrap()).unwrap(); |
| 94 | + |
| 95 | + let receiver = Address::from_str("bcrt1qsdks5za4t6sevaph6tz9ddfjzvhkdkxe9tfrcy").unwrap(); |
| 96 | + |
| 97 | + let amount = 100000000; |
| 98 | + |
| 99 | + let (outpoint, witness_utxo) = get_vout(&depo_tx, bridge_descriptor.script_pubkey()); |
| 100 | + |
| 101 | + let mut txin = TxIn::default(); |
| 102 | + txin.previous_output = outpoint; |
| 103 | + |
| 104 | + txin.sequence = Sequence::from_height(26); //Sequence::MAX; // |
| 105 | + psbt.unsigned_tx.input.push(txin); |
| 106 | + |
| 107 | + psbt.unsigned_tx.output.push(TxOut { |
| 108 | + script_pubkey: receiver.script_pubkey(), |
| 109 | + value: amount / 5 - 500, |
| 110 | + }); |
| 111 | + |
| 112 | + psbt.unsigned_tx.output.push(TxOut { |
| 113 | + script_pubkey: bridge_descriptor.script_pubkey(), |
| 114 | + value: amount * 4 / 5, |
| 115 | + }); |
| 116 | + |
| 117 | + // Generating signatures & witness data |
| 118 | + |
| 119 | + let mut input = psbt::Input::default(); |
| 120 | + input |
| 121 | + .update_with_descriptor_unchecked(&bridge_descriptor) |
| 122 | + .unwrap(); |
| 123 | + |
| 124 | + input.witness_utxo = Some(witness_utxo.clone()); |
| 125 | + psbt.inputs.push(input); |
| 126 | + psbt.outputs.push(psbt::Output::default()); |
| 127 | + |
| 128 | + let mut sighash_cache = SighashCache::new(&psbt.unsigned_tx); |
| 129 | + |
| 130 | + let msg = psbt |
| 131 | + .sighash_msg(0, &mut sighash_cache, None) |
| 132 | + .unwrap() |
| 133 | + .to_secp_msg(); |
| 134 | + |
| 135 | + // Fixme: Take a parameter |
| 136 | + let hash_ty = bitcoin::EcdsaSighashType::All; |
| 137 | + |
| 138 | + let sk1 = backup1_private.inner; |
| 139 | + let sk2 = backup2_private.inner; |
| 140 | + |
| 141 | + // Finally construct the signature and add to psbt |
| 142 | + let sig1 = secp256k1.sign_ecdsa(&msg, &sk1); |
| 143 | + let pk1 = backup1_private.public_key(&secp256k1); |
| 144 | + assert!(secp256k1.verify_ecdsa(&msg, &sig1, &pk1.inner).is_ok()); |
| 145 | + |
| 146 | + // Second key just in case |
| 147 | + let sig2 = secp256k1.sign_ecdsa(&msg, &sk2); |
| 148 | + let pk2 = backup2_private.public_key(&secp256k1); |
| 149 | + assert!(secp256k1.verify_ecdsa(&msg, &sig2, &pk2.inner).is_ok()); |
| 150 | + |
| 151 | + psbt.inputs[0].partial_sigs.insert( |
| 152 | + pk1, |
| 153 | + bitcoin::EcdsaSig { |
| 154 | + sig: sig1, |
| 155 | + hash_ty: hash_ty, |
| 156 | + }, |
| 157 | + ); |
| 158 | + |
| 159 | + println!("{:#?}", psbt); |
| 160 | + |
| 161 | + let serialized = serialize(&psbt); |
| 162 | + println!("{}", base64::encode(&serialized)); |
| 163 | + |
| 164 | + psbt.finalize_mut(&secp256k1).unwrap(); |
| 165 | + println!("{:#?}", psbt); |
| 166 | + |
| 167 | + let tx = psbt.extract_tx(); |
| 168 | + println!("{}", tx.raw_hex()); |
| 169 | +} |
| 170 | + |
| 171 | +// Find the Outpoint by spk |
| 172 | +fn get_vout(tx: &Transaction, spk: Script) -> (OutPoint, TxOut) { |
| 173 | + for (i, txout) in tx.clone().output.into_iter().enumerate() { |
| 174 | + if spk == txout.script_pubkey { |
| 175 | + return (OutPoint::new(tx.txid(), i as u32), txout); |
| 176 | + } |
| 177 | + } |
| 178 | + panic!("Only call get vout on functions which have the expected outpoint"); |
| 179 | +} |
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