WIP

!!! This is a work in progress and you shouldn’t use this just yet for any main net transactions. !!!

Install

Repository:

repositories {
    jcenter()
    maven {
        url 'https://dl.bintray.com/novacrypto/BIP/'
    }
}

Add dependency:

dependencies {
    compile 'io.github.novacrypto:BIP32:2019.01.27'
}

Usage

ExtendedPrivateKey key = ExtendedPrivateKey.fromSeed(seed, Bitcoin.MAIN_NET);
ExtendedPrivateKey child = key.derive("m/0'/0");
ExtendedPublicKey childPub = child.neuter();

Need a seed from mnemonic/passphrase? check out NovaCrypto/BIP39.

Serialize

String extendedKey = key.extendedBase58();

Or manually using NovaCrypto/Base58:

String extendedKey = base58Encode(key.extendedKeyByteArray());

Deserialize extended

ExtendedPrivateKey key = ExtendedPrivateKey.deserializer().deserializer(extendedBase58OrByteArray);

Or public:

ExtendedPublicKey key = ExtendedPublicKey.deserializer().deserializer(extendedBase58OrByteArray);

Serialize address

Pay to Public Key Hash

String p2pkh = public.p2pkhAddress();

Pay to Script Hash

String p2sh = public.p2shAddress();