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[Minor] Removed unnecessary class

This commit is contained in:
Robert von Burg 2017-10-06 10:41:08 +02:00
parent b46c59e890
commit 484d0a9e92
1 changed files with 0 additions and 80 deletions
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80
li.strolch.privilege/src/main/java/Temp.java
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@ -1,80 +0,0 @@
import java.io.UnsupportedEncodingException;
import java.security.SecureRandom;
import java.text.MessageFormat;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
public class Temp {
public static void main(String[] args) throws Exception {
for (int i = 0; i < 10; i++) {
long start = System.nanoTime();
byte[] bytes = new byte[16];
SecureRandom secureRandom = new SecureRandom();
secureRandom.nextBytes(bytes);
String token = getHexString(bytes);
System.out.println(token);
String algorithm = "PBKDF2WithHmacSHA512";
char[] password = "admin".toCharArray();
byte[] salt = "admin".getBytes();
int iterations = 10000;
int keyLength = 256;
SecretKeyFactory skf = SecretKeyFactory.getInstance(algorithm);
PBEKeySpec spec = new PBEKeySpec(password, salt, iterations, keyLength);
SecretKey key = skf.generateSecret(spec);
byte[] res = key.getEncoded();
System.out.println("Password hash: " + getHexString(res));
System.out.println("Salt: " + getHexString(salt));
long end = System.nanoTime();
System.out.println("Took: " + formatNanoDuration(end - start));
}
}
public static String getHexString(byte[] raw) throws RuntimeException {
try {
byte[] hex = new byte[2 * raw.length];
int index = 0;
for (byte b : raw) {
int v = b & 0xFF;
hex[index++] = HEX_CHAR_TABLE[v >>> 4];
hex[index++] = HEX_CHAR_TABLE[v & 0xF];
}
return new String(hex, "ASCII"); //$NON-NLS-1$
} catch (UnsupportedEncodingException e) {
String msg = MessageFormat.format("Something went wrong while converting to HEX: {0}", e.getMessage()); //$NON-NLS-1$
throw new RuntimeException(msg, e);
}
}
public static String formatNanoDuration(final long nanos) {
if (nanos >= 3600000000000L) {
return String.format("%.0fh", (nanos / 3600000000000.0D)); //$NON-NLS-1$
} else if (nanos >= 60000000000L) {
return String.format("%.0fm", (nanos / 60000000000.0D)); //$NON-NLS-1$
} else if (nanos >= 1000000000L) {
return String.format("%.0fs", (nanos / 1000000000.0D)); //$NON-NLS-1$
} else if (nanos >= 1000000L) {
return String.format("%.0fms", (nanos / 1000000.0D)); //$NON-NLS-1$
} else if (nanos >= 1000L) {
return String.format("%.0fus", (nanos / 1000.0D)); //$NON-NLS-1$
} else {
return nanos + "ns"; //$NON-NLS-1$
}
}
private static final byte[] HEX_CHAR_TABLE = { (byte) '0', (byte) '1', (byte) '2', (byte) '3', (byte) '4',
(byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd',
(byte) 'e', (byte) 'f' };
}