/**
* Convert to a human readable (BASE58) address with network and type prefixes.
*
* @param address
* @return human readable representation of the address
* @throws ValidationException
*/
public static String toSatoshiStyle(Address address) throws ValidationException {
byte[] keyDigest = address.toByteArray();
int addressFlag;
if (address.getNetwork() == Network.PRODUCTION) {
if (address.getType() == Address.Type.COMMON) {
addressFlag = 0x0;
} else if (address.getType() == Address.Type.P2SH) {
addressFlag = 0x5;
} else {
throw new ValidationException("unknown address type");
}
} else if (address.getNetwork() == Network.TEST) {
if (address.getType() == Address.Type.COMMON) {
addressFlag = 0x6f;
} else if (address.getType() == Address.Type.P2SH) {
addressFlag = 196;
} else {
throw new ValidationException("unknown address type");
}
} else {
throw new ValidationException("unknown network");
}
byte[] addressBytes = new byte[1 + keyDigest.length + 4];
addressBytes[0] = (byte) (addressFlag & 0xff);
System.arraycopy(keyDigest, 0, addressBytes, 1, keyDigest.length);
byte[] check = Hash.hash(addressBytes, 0, keyDigest.length + 1);
System.arraycopy(check, 0, addressBytes, keyDigest.length + 1, 4);
return ByteUtils.toBase58(addressBytes);
}
/**
* Convert a human readable address string to an address object
*
* @param address - the human readable address
* @return an address object with type and network ad encoded in the readable string
* @throws ValidationException - for malformed address strings
*/
public static Address fromSatoshiStyle(String address) throws ValidationException {
try {
Network network = Network.PRODUCTION;
Address.Type type = Type.COMMON;
byte[] raw = ByteUtils.fromBase58(address);
if ((raw[0] & 0xff) == 0x0) {
network = Network.PRODUCTION;
type = Address.Type.COMMON;
}
if ((raw[0] & 0xff) == 5) {
network = Network.PRODUCTION;
type = Address.Type.P2SH;
}
if ((raw[0] & 0xff) == 0x6f) {
network = Network.TEST;
type = Address.Type.COMMON;
}
if ((raw[0] & 0xff) == 196) {
network = Network.TEST;
type = Address.Type.P2SH;
}
byte[] check = Hash.hash(raw, 0, raw.length - 4);
for (int i = 0; i < 4; ++i) {
if (check[i] != raw[raw.length - 4 + i]) {
throw new ValidationException("Address checksum mismatch");
}
}
byte[] keyDigest = new byte[raw.length - 5];
System.arraycopy(raw, 1, keyDigest, 0, raw.length - 5);
return new Address(network, type, keyDigest);
} catch (Exception e) {
throw new ValidationException(e);
}
}
/**
* Convert to a human readable address string from a digest
*
* @param keyDigest - the digest
* @param addressFlag - a flag encoded in the first byte of string representation
* @return
* @throws ValidationException
*/
@Deprecated
public static String toSatoshiStyle(byte[] keyDigest, int addressFlag) {
byte[] addressBytes = new byte[1 + keyDigest.length + 4];
addressBytes[0] = (byte) (addressFlag & 0xff);
System.arraycopy(keyDigest, 0, addressBytes, 1, keyDigest.length);
byte[] check = Hash.hash(addressBytes, 0, keyDigest.length + 1);
System.arraycopy(check, 0, addressBytes, keyDigest.length + 1, 4);
return ByteUtils.toBase58(addressBytes);
}
/**
* Convert a human readable address string to an address object
*
* @param address - the human readable address
* @param addressFlag - a flag encoded in the first byte of string representation
* @return
* @throws ValidationException
*/
@Deprecated
public static byte[] fromSatoshiStyle(String address, int addressFlag)
throws ValidationException {
try {
byte[] raw = ByteUtils.fromBase58(address);
if (raw[0] != (byte) (addressFlag & 0xff)) {
throw new ValidationException("invalid address for this chain");
}
byte[] check = Hash.hash(raw, 0, raw.length - 4);
for (int i = 0; i < 4; ++i) {
if (check[i] != raw[raw.length - 4 + i]) {
throw new ValidationException("Address checksum mismatch");
}
}
byte[] keyDigest = new byte[raw.length - 5];
System.arraycopy(raw, 1, keyDigest, 0, raw.length - 5);
return keyDigest;
} catch (Exception e) {
throw new ValidationException(e);
}
}