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@ecki
ecki / HashMapCollision.java
Last active August 29, 2015 14:12
JMH Hash test
package net.eckenfels.jmhtest.hash;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
@ecki
ecki / ToString.java
Last active July 20, 2017 05:52
JMH int to String Benchmark
// class name and method names are not Java convention but readable
package net.eckenfels.jmhtest;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Param;
@ecki
ecki / AbandonTest.java
Last active August 29, 2015 14:25
commons-dbcp abandon connection killing
package net.eckenfels.test.dbcp;
import java.io.PrintWriter;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Locale;
import java.util.TimeZone;
@ecki
ecki / DLog.java
Created August 19, 2015 07:11
Testing @DLogBot
package test;
import java.math.BigInteger;
public class DLog
{
// testing @DLogBot http://crypto.2015.rump.cr.yp.to/e7803fa1f87ce2a18dbbbbcffc8d5695.pdf
public static void main(String[] args)
{
BigInteger apache = b("9fdb8b8a004544f0045f1737d0ba2e0b274cdf1a9f588218fb435316a16e374171fd19d8d8f37c39bf863fd60e3e300680a3030c6e4c3757d08f70e6aa871033");
package test;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
package net.eckenfels.test.xxe;
import java.io.File;
import java.io.IOException;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.DTDHandler;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
@ecki
ecki / ca.bat
Last active August 28, 2017 16:44
ECC Test CA
@rem Batch file creates 2 P12 keystores with ECC Certificates (intermediate + root in chain)
@del *.pem
@del *.csr
@del *.crt
@del *.p12
@rem -param_enc explicit not possible with Win 7
set NAME=ECC Test
@ecki
ecki / RenameFile.java
Last active July 6, 2017 02:16
Overwrite libc rename() for Java with LD_PRELOAD
/*
* RenameFiles.java
*
* created at 2017-07-06 by Bernd Eckenfels <b.eckenfels@seeburger.de>
*
* License: ASL 2.0
*/
package net.eckenfels.test.javasystemtest;
import java.io.IOException;
@ecki
ecki / PipeTest.java
Last active July 10, 2017 22:48
Testing Listening Port
package net.eckenfels.test.javasystemtest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.nio.channels.Pipe;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
@ecki
ecki / commands.txt
Created December 9, 2017 20:35
GPG ECC Key Details
> gpg.exe --verbose --list-keys
pub brainpoolP384r1 2017-12-09 [SC]
971D76C158AFD6D6AC53205327C195C6F0FB0EDA
uid [ ultimativ ] Bernd Eckenfels (test) <ecki@zusammenkunft.net>
sub brainpoolP384r1 2017-12-09 [E]
> gpg.exe --export-secret-key > unsecret.pgp
> gpg.exe --verbose --list-packets unsecret.pgp