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pbc-vanity-address
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Restructure and generalize

This commit is contained in:
Jon Michael Aanes 2024-03-10 20:14:15 +01:00
parent 1ddde97548
commit a99bd4d91d
Signed by: Jmaa
SSH Key Fingerprint: SHA256:Ab0GfHGCblESJx7JRE4fj4bFy/KRpeLhi41y4pF3sNA
5 changed files with 104 additions and 55 deletions
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1
.gitignore vendored Normal file
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@ -0,0 +1 @@
/target/

26
pom.xml
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@ -3,7 +3,7 @@
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>jmaa</groupId>
<groupId>jmaa.pbc</groupId>
<artifactId>pbc-vanity-address</artifactId>
<packaging>jar</packaging>
<version>4.0.0</version>
@ -36,8 +36,8 @@
</dependency>
<dependency>
<groupId>com.partisiablockchain.core</groupId>
<artifactId>blockchain</artifactId>
<version>4.74.0</version>
<artifactId>contract</artifactId>
<version>4.55.0</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
@ -46,6 +46,26 @@
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<id>execute</id>
<phase>package</phase>
<goals><goal>exec</goal></goals>
</execution>
</executions>
<configuration>
<executable>java</executable>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>

3
run.sh Executable file
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#!/usr/bin/env bash
echo $*
mvn compile exec:java -Dexec.mainClass="jmaa.pbc.PbcVanityAddressSearcher" -Dexec.args="$*"

77
src/main/java/jmaa/pbc/PbcVanityAddressSearcher.java Normal file
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package jmaa.pbc;
import java.util.List;
import java.util.ArrayList;
import com.partisiablockchain.BlockchainAddress;
import com.partisiablockchain.crypto.BlockchainPublicKey;
import com.partisiablockchain.crypto.KeyPair;
/** Search for PBC vanity addresses.
*
* <p>Based on Jesper Balman Gravgaard's original version.
*/
public final class PbcVanityAddressSearcher {
private static final int NUM_THREADS = 8;
private static final long MAX_ITERATIONS_PER_THREAD = 100_000_000;
private static final long INITIAL_PING_INTERVAL = 10_000;
public static void main(String[] args) throws InterruptedException {
System.out.println("Args: " + List.of(args));
searchForPrivateKeyWithVanityAddress(args[0], args[1]);
}
/**
* @param vanityPrefix Desired address prefix
*/
private static void searchForPrivateKeyWithVanityAddress(String vanityPrefix, String vanitySuffix) throws InterruptedException {
if (!vanityPrefix.startsWith("00")) {
throw new IllegalArgumentException("Vanity prefix must start with 00.");
}
System.out.println("Searching for private key for address prefix \"%s\" and suffix \"%s\" ".formatted(vanityPrefix, vanitySuffix));
List<Thread> searchers = new ArrayList<>();
for(int threadIdx=0;threadIdx<NUM_THREADS ;threadIdx++) {
final Thread searcher = new Thread(new KeySearcher(threadIdx, vanityPrefix, vanitySuffix));
searcher.start();
searchers.add(searcher);
}
for (Thread searcher : searchers) {
searcher.join();
}
}
private record KeySearcher(int threadIdx, String vanityPrefix, String vanitySuffix) implements Runnable {
@Override
public void run() {
long start = System.nanoTime();
long pingInterval = INITIAL_PING_INTERVAL;
for(int iterationIdx=1;iterationIdx<MAX_ITERATIONS_PER_THREAD;iterationIdx++) {
// Generate random keypair
final KeyPair keyPair = new KeyPair();
final BlockchainAddress address = keyPair.getPublic().createAddress();
// Check vanity
final String addressAsString = address.writeAsString();
final boolean satisfiesVanity = addressAsString.startsWith(vanityPrefix) && addressAsString.endsWith(vanitySuffix);
// Output if vain enough
if(satisfiesVanity) {
System.out.println("[%2d:%10d] match: addr=%s - pk=%s".formatted(threadIdx, iterationIdx, addressAsString, keyPair.getPrivateKey().toString(16)));
}
// Ping
if (iterationIdx % pingInterval == 0) {
final long now = System.nanoTime();
final long duration = (now - start) / 1_000_000_000;
System.out.println("[%2d:%10d] ping at %d sec".formatted(threadIdx, iterationIdx, duration));
pingInterval = pingInterval * 2;
}
}
}
}
}

52
src/main/jmaa/pbc/PbcVanityAddressSearcher.java
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@ -1,52 +0,0 @@
package jmaa.pbc;
/** Search for PBC vanity addresses.
*
* <p>Based on Jesper Balman Gravgaard's original version.
*/
public final class PbcVanityAddressSearcher {
/** The vanity prefix to hunt for. */
public static final String VANITY_PREFIX = "00badc0de";
@Test
void randomKeys() throws InterruptedException {
List<Thread> searchers = new ArrayList<>();
for(int i=0;i<8;i++) {
final Thread searcher = new Thread(new KeySearcher(i));
searcher.start();
searchers.add(searcher);
}
for (Thread searcher : searchers) {
searcher.join();
}
}
record KeySearcher(int id) implements Runnable {
@Override
public void run() {
long start = System.nanoTime();
for(int i=0;i<100_000_000;i++) {
final KeyPair keyPair = new KeyPair();
final BlockchainPublicKey publicKey = keyPair.getPublic();
final BlockchainAddress address = publicKey.createAddress();
if(address.writeAsString().startsWith(VANITY_PREFIX)) {
System.out.println("["+id+"] match: "+address.writeAsString()+ " - "+keyPair.getPrivateKey().toString(16));
}
if (i % 1_000_000 == 0) {
final long now = System.nanoTime();
final long duration = (now - start) / 1_000_000;
System.out.print("["+id+":"+i+"] "+duration+" ");
start = now;
}
if ((id==0) && (i % 1_000_000 == 10_000)) {
System.out.println();
}
}
}
}
}