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generate swap-in potentiam address

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pm47 2023-06-07 17:55:14 +02:00
parent ff25788fd0
commit cdd1355548
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GPG key ID: E434ED292E85643A
2 changed files with 36 additions and 2 deletions
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26
eclair-core/src/main/scala/fr/acinq/eclair/crypto/LocalKeyManager.scala
View file

@ -19,7 +19,7 @@ package fr.acinq.eclair.crypto
import com.google.common.cache.{CacheBuilder, CacheLoader, LoadingCache}
import fr.acinq.bitcoin.scala.Crypto.{PrivateKey, PublicKey}
import fr.acinq.bitcoin.scala.DeterministicWallet.{derivePrivateKey, _}
import fr.acinq.bitcoin.scala.{Block, ByteVector32, ByteVector64, Crypto, DeterministicWallet}
import fr.acinq.bitcoin.scala.{Block, ByteVector32, ByteVector64, Crypto, DeterministicWallet, _}
import fr.acinq.eclair.router.Announcements
import fr.acinq.eclair.transactions.Transactions
import fr.acinq.eclair.transactions.Transactions.TransactionWithInputInfo
@ -136,7 +136,7 @@ class LocalKeyManager(seed: ByteVector, chainHash: ByteVector32) extends KeyMana
Transactions.sign(tx, currentKey)
}
/**
* Ths method is used to spend revoked transactions, with the corresponding revocation key
*
@ -157,4 +157,26 @@ class LocalKeyManager(seed: ByteVector, chainHash: ByteVector32) extends KeyMana
val localFundingPrivKey = privateKeys.get(fundingKeyPath).privateKey
Announcements.signChannelAnnouncement(chainHash, shortChannelId, localNodeSecret, remoteNodeId, localFundingPrivKey, remoteFundingKey, features)
}
def multisigSwapInAddress(serverPublicKey: Crypto.PublicKey, refundDelay: Int): String = {
val userKeyPath = chainHash match {
case Block.RegtestGenesisBlock.hash | Block.TestnetGenesisBlock.hash =>
DeterministicWallet.hardened(51) :: DeterministicWallet.hardened(0) :: DeterministicWallet.hardened(0) :: Nil
case Block.LivenetGenesisBlock.hash =>
DeterministicWallet.hardened(52) :: DeterministicWallet.hardened(0) :: DeterministicWallet.hardened(0) :: Nil
}
val userPrivateKey = DeterministicWallet.derivePrivateKey(master, userKeyPath).privateKey
val userPublicKey = userPrivateKey.publicKey
val redeemScript = OP_PUSHDATA(userPublicKey.value) :: OP_CHECKSIGVERIFY :: OP_PUSHDATA(serverPublicKey.value) :: OP_CHECKSIG :: OP_IFDUP :: OP_NOTIF :: OP_PUSHDATA(Script.encodeNumber(refundDelay)) :: OP_CHECKSEQUENCEVERIFY :: OP_ENDIF :: Nil
val pubkeyScript = Script.pay2wsh(redeemScript)
val hrp = chainHash match {
case Block.RegtestGenesisBlock.hash => "bcrt"
case Block.TestnetGenesisBlock.hash => "tb"
case Block.LivenetGenesisBlock.hash => "bc"
}
val witnessScript = pubkeyScript(1).asInstanceOf[OP_PUSHDATA].data
val address = Bech32.encodeWitnessAddress(hrp, 0, witnessScript)
address
}
}

12
eclair-core/src/test/scala/fr/acinq/eclair/crypto/LocalKeyManagerSpec.scala
View file

@ -149,4 +149,16 @@ class LocalKeyManagerSpec extends AnyFunSuite {
assert(keyManager.htlcPoint(channelKeyPath).publicKey == PrivateKey(hex"b1be27b5232e3bc5d6a261949b4ee68d96fa61f481998d36342e2ad99444cf8a").publicKey)
assert(keyManager.commitmentSecret(channelKeyPath, 0).value == ShaChain.shaChainFromSeed(ByteVector32.fromValidHex("eeb3bad6808e8bb5f1774581ccf64aa265fef38eca80a1463d6310bb801b3ba7"), 0xFFFFFFFFFFFFL))
}
test("generate multisig swap-in address") {
val entropy = ByteVector32.fromValidHex("0101010101010101010101010101010101010101010101010101010101010101")
val seed = MnemonicCode.toSeed(MnemonicCode.toMnemonics(entropy), "").take(32)
val keyManager = new LocalKeyManager(seed, Block.RegtestGenesisBlock.hash)
val serverPublicKey = PublicKey(ByteVector.fromValidHex("02cd0e2ed9c42af42e0b30e2a0b339c8335bbdc1f895fe552d8e224aedc82d6c88"))
val swapInRefundDelay = 144 * 30 * 6
val swapInAddress = keyManager.multisigSwapInAddress(serverPublicKey, swapInRefundDelay)
assert(swapInAddress == "bcrt1qvwc4zcelvlj3pcy97pj09dz2hgq0ptav25nrjm54dt3ch09plxnq6pmjje")
}
}