feat: keccak address support (#179)

Author: alfonsobries

build.gradle

@@ -22,6 +22,7 @@ repositories {
 }
 
 dependencies {
+    implementation 'org.web3j:core:4.8.7' 
     implementation 'org.bitcoinj:bitcoinj-core:0.16.3'
     implementation 'com.google.code.gson:gson:2.11.0'
     implementation 'com.google.guava:guava:30.2.0-jre'

src/main/java/org/arkecosystem/crypto/identities/Address.java

@@ -1,58 +1,50 @@
 package org.arkecosystem.crypto.identities;
 
-import com.google.common.primitives.Bytes;
-import org.arkecosystem.crypto.configuration.Network;
-import org.arkecosystem.crypto.encoding.Base58;
 import org.arkecosystem.crypto.encoding.Hex;
 import org.bitcoinj.core.ECKey;
-import org.bouncycastle.crypto.digests.RIPEMD160Digest;
+import org.web3j.crypto.Hash;
+import org.web3j.crypto.Keys;
 
 public class Address {
-    public static String fromPassphrase(String passphrase, Integer networkVersion) {
-        return fromPrivateKey(PrivateKey.fromPassphrase(passphrase), networkVersion);
-    }
-
     public static String fromPassphrase(String passphrase) {
-        return Address.fromPassphrase(passphrase, null);
+        ECKey privateKey = PrivateKey.fromPassphrase(passphrase);
+        return fromPrivateKey(privateKey);
     }
 
-    public static String fromPublicKey(String publicKey, Integer networkVersion) {
+    public static String fromPublicKey(String publicKey) {
         byte[] publicKeyBytes = Hex.decode(publicKey);
 
-        RIPEMD160Digest digest = new RIPEMD160Digest();
-        digest.update(publicKeyBytes, 0, publicKeyBytes.length);
-        byte[] out = new byte[20];
-        digest.doFinal(out, 0);
+        // Ensure the public key is uncompressed
+        ECKey ecKey = ECKey.fromPublicOnly(publicKeyBytes);
+        byte[] uncompressedPublicKeyBytes = ecKey.getPubKeyPoint().getEncoded(false);
 
-        if (networkVersion == null) {
-            networkVersion = Network.get().version();
-        }
+        // Remove the prefix (0x04)
+        byte[] rawPublicKey = new byte[uncompressedPublicKeyBytes.length - 1];
+        System.arraycopy(uncompressedPublicKeyBytes, 1, rawPublicKey, 0, rawPublicKey.length);
 
-        byte[] bytes = Bytes.concat(new byte[] {networkVersion.byteValue()}, out);
-        return Base58.encodeChecked(bytes);
-    }
+        // Hash the public key using Keccak-256
+        byte[] keccakHash = Hash.sha3(rawPublicKey);
 
-    public static String fromPublicKey(String publicKey) {
-        return Address.fromPublicKey(publicKey, null);
-    }
+        // Take the last 20 bytes of the Keccak-256 hash
+        byte[] addressBytes = new byte[20];
 
-    public static String fromPrivateKey(ECKey privateKey, Integer networkVersion) {
-        return fromPublicKey(privateKey.getPublicKeyAsHex(), networkVersion);
-    }
+        System.arraycopy(keccakHash, keccakHash.length - 20, addressBytes, 0, 20);
 
-    public static String fromPrivateKey(ECKey privateKey) {
-        return Address.fromPrivateKey(privateKey, null);
-    }
+        // Convert to checksum address
+        String address = "0x" + Hex.encode(addressBytes);
 
-    public static Boolean validate(String address, Integer networkVersion) {
-        if (networkVersion == null) {
-            networkVersion = Network.get().version();
-        }
+        return Keys.toChecksumAddress(address);
+    }
 
-        return Base58.decodeChecked(address)[0] == networkVersion;
+    public static String fromPrivateKey(ECKey privateKey) {
+        byte[] publicKeyBytes = privateKey.getPubKey();
+        return fromPublicKey(Hex.encode(publicKeyBytes));
     }
 
     public static Boolean validate(String address) {
-        return Address.validate(address, null);
+        if (address == null || !address.matches("^0x[a-fA-F0-9]{40}$")) {
+            return false;
+        }
+        return address.equals(Keys.toChecksumAddress(address));
     }
 }

src/main/java/org/arkecosystem/crypto/transactions/builder/VoteBuilder.java

@@ -24,7 +24,7 @@ public VoteBuilder addVote(String vote) {
     }
 
     public VoteBuilder sign(String passphrase) {
-        this.transaction.recipientId = Address.fromPassphrase(passphrase, this.transaction.network);
+        this.transaction.recipientId = Address.fromPassphrase(passphrase);
 
         super.sign(passphrase);
 

src/test/java/org/arkecosystem/crypto/identities/AddressTest.java

@@ -3,38 +3,34 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-import org.arkecosystem.crypto.configuration.Network;
-import org.arkecosystem.crypto.networks.Devnet;
 import org.bitcoinj.core.ECKey;
 import org.junit.jupiter.api.Test;
 
 public class AddressTest {
 
     @Test
     public void fromPassphrase() {
-        Network.set(new Devnet());
         String actual = Address.fromPassphrase("this is a top secret passphrase");
-        assertEquals("D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib", actual);
+        assertEquals("0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01", actual);
     }
 
     @Test
     public void fromPublicKey() {
         String actual =
                 Address.fromPublicKey(
                         "034151a3ec46b5670a682b0a63394f863587d1bc97483b1b6c70eb58e7f0aed192");
-        assertEquals("D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib", actual);
+        assertEquals("0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01", actual);
     }
 
     @Test
     public void fromPrivateKey() {
         ECKey privateKey = PrivateKey.fromPassphrase("this is a top secret passphrase");
         String actual = Address.fromPrivateKey(privateKey);
-        assertEquals("D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib", actual);
+        assertEquals("0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01", actual);
     }
 
     @Test
     public void validate() {
-        Network.set(new Devnet());
-        assertTrue(Address.validate("D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib"));
+        assertTrue(Address.validate("0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01"));
     }
 }

src/test/resources/identity.json

@@ -2,7 +2,7 @@
     "data": {
         "privateKey": "d8839c2432bfd0a67ef10a804ba991eabba19f154a3d707917681d45822a5712",
         "publicKey": "034151a3ec46b5670a682b0a63394f863587d1bc97483b1b6c70eb58e7f0aed192",
-        "address": "D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib",
+        "address": "0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01",
         "wif": "SGq4xLgZKCGxs7bjmwnBrWcT4C1ADFEermj846KC97FSv1WFD1dA"
     },
     "passphrase": "this is a top secret passphrase"

src/test/resources/transactions/V1/transfer/passphrase-with-vendor-field-hex.json

@@ -3,7 +3,7 @@
         "type": 0,
         "amount": 200000000,
         "fee": 10000000,
-        "recipientId": "D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib",
+        "recipientId": "0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01",
         "timestamp": 41443847,
         "asset": {},
         "vendorFieldHex": "48656c6c6f20576f726c64",

src/test/resources/transactions/V1/transfer/passphrase-with-vendor-field.json

@@ -3,7 +3,7 @@
         "type": 0,
         "amount": 200000000,
         "fee": 10000000,
-        "recipientId": "D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib",
+        "recipientId": "0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01",
         "timestamp": 41443847,
         "asset": {},
         "vendorField": "Hello World",

src/test/resources/transactions/V1/transfer/passphrase.json

@@ -3,7 +3,7 @@
         "type": 0,
         "amount": 200000000,
         "fee": 10000000,
-        "recipientId": "D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib",
+        "recipientId": "0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01",
         "timestamp": 41268326,
         "asset": {},
         "senderPublicKey": "034151a3ec46b5670a682b0a63394f863587d1bc97483b1b6c70eb58e7f0aed192",

src/test/resources/transactions/V1/transfer/second-passphrase-with-vendor-field-hex.json

@@ -3,7 +3,7 @@
         "type": 0,
         "amount": 200000000,
         "fee": 10000000,
-        "recipientId": "D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib",
+        "recipientId": "0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01",
         "timestamp": 41443865,
         "asset": {},
         "vendorFieldHex": "48656c6c6f20576f726c64",

src/test/resources/transactions/V1/transfer/second-passphrase-with-vendor-field.json

@@ -3,7 +3,7 @@
         "type": 0,
         "amount": 200000000,
         "fee": 10000000,
-        "recipientId": "D61mfSggzbvQgTUe6JhYKH2doHaqJ3Dyib",
+        "recipientId": "0xb0FF9213f7226bBB72b84dE16af86e56f1f38B01",
         "timestamp": 41443865,
         "asset": {},
         "vendorField": "Hello World",