Package org.bitcoinj.wallet

Class DecryptingKeyBag

java.lang.Object
org.bitcoinj.wallet.DecryptingKeyBag
All Implemented Interfaces:
KeyBag
public class DecryptingKeyBag extends Object implements KeyBag
A DecryptingKeyBag filters a pre-existing key bag, decrypting keys as they are requested using the provided AES key. If the keys are encrypted and no AES key provided, ECKey.KeyIsEncryptedException will be thrown.

  • Field Details

    • target

      protected final KeyBag target

    • aesKey

      protected final org.bouncycastle.crypto.params.KeyParameter aesKey

  • Constructor Details

    • DecryptingKeyBag

      public DecryptingKeyBag(KeyBag target, @Nullable org.bouncycastle.crypto.params.KeyParameter aesKey)

  • Method Details

    • findKeyFromPubKeyHash

      @Nullable public ECKey findKeyFromPubKeyHash(byte[] pubKeyHash, @Nullable Script.ScriptType scriptType)
      Description copied from interface: KeyBag
      Locates a keypair from the keychain given the hash of the public key, and (optionally) by usage for a specific script type. This is needed when finding out which key we need to use to redeem a transaction output.
      Specified by:
      findKeyFromPubKeyHash in interface KeyBag
      Parameters:
      pubKeyHash - hash of the keypair to look for
      scriptType - only look for given usage (currently Script.ScriptType.P2PKH or Script.ScriptType.P2WPKH) or null if we don't care
      Returns:
      found key or null if no such key was found.

    • findKeyFromPubKey

      @Nullable public ECKey findKeyFromPubKey(byte[] pubKey)
      Description copied from interface: KeyBag
      Locates a keypair from the keychain given the raw public key bytes.
      Specified by:
      findKeyFromPubKey in interface KeyBag
      Returns:
      ECKey or null if no such key was found.

    • findRedeemDataFromScriptHash

      @Nullable public RedeemData findRedeemDataFromScriptHash(byte[] scriptHash)
      Description copied from interface: KeyBag
      Locates a redeem data (redeem script and keys) from the keychain given the hash of the script. This is needed when finding out which key and script we need to use to locally sign a P2SH transaction input. It is assumed that wallet should not have more than one private key for a single P2SH tx for security reasons. Returns RedeemData object or null if no such data was found.
      Specified by:
      findRedeemDataFromScriptHash in interface KeyBag