- pub fn to_channel_id(&self) -> Uint256 {
- let mut index = [0; 32];
- index[30] = ((self.index >> 8) & 0xff) as u8;
- index[31] = ((self.index >> 0) & 0xff) as u8;
- self.txid.into_le() ^ Sha256dHash::from(&index[..]).into_le()
+ pub fn to_channel_id(&self) -> [u8; 32] {
+ let mut res = [0; 32];
+ res[..].copy_from_slice(&self.txid[..]);
+ res[30] ^= ((self.index >> 8) & 0xff) as u8;
+ res[31] ^= ((self.index >> 0) & 0xff) as u8;
+ res
+ }
+
+ /// Converts this OutPoint into the OutPoint field as used by rust-bitcoin
+ pub fn into_bitcoin_outpoint(self) -> BitcoinOutPoint {
+ BitcoinOutPoint {
+ txid: self.txid,
+ vout: self.index as u32,
+ }
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use chain::transaction::OutPoint;
+
+ use bitcoin::blockdata::transaction::Transaction;
+ use bitcoin::consensus::encode;
+
+ use hex;
+
+ #[test]
+ fn test_channel_id_calculation() {
+ let tx: Transaction = encode::deserialize(&hex::decode("020000000001010e0adef48412e4361325ac1c6e36411299ab09d4f083b9d8ddb55fbc06e1b0c00000000000feffffff0220a1070000000000220020f81d95e040bd0a493e38bae27bff52fe2bb58b93b293eb579c01c31b05c5af1dc072cfee54a3000016001434b1d6211af5551905dc2642d05f5b04d25a8fe80247304402207f570e3f0de50546aad25a872e3df059d277e776dda4269fa0d2cc8c2ee6ec9a022054e7fae5ca94d47534c86705857c24ceea3ad51c69dd6051c5850304880fc43a012103cb11a1bacc223d98d91f1946c6752e358a5eb1a1c983b3e6fb15378f453b76bd00000000").unwrap()[..]).unwrap();
+ assert_eq!(&OutPoint {
+ txid: tx.txid(),
+ index: 0
+ }.to_channel_id(), &hex::decode("3e88dd7165faf7be58b3c5bb2c9c452aebef682807ea57080f62e6f6e113c25e").unwrap()[..]);
+ assert_eq!(&OutPoint {
+ txid: tx.txid(),
+ index: 1
+ }.to_channel_id(), &hex::decode("3e88dd7165faf7be58b3c5bb2c9c452aebef682807ea57080f62e6f6e113c25f").unwrap()[..]);