66 lines
2.2 KiB
Java
66 lines
2.2 KiB
Java
|
/*
|
||
|
|
* Copyright (C) 2024 Open Autonomous Connection - All Rights Reserved
|
||
|
|
*
|
||
|
|
* You are unauthorized to remove this copyright.
|
||
|
|
* You have to give Credits to the Author in your project and link this GitHub site: https://github.com/Open-Autonomous-Connection
|
||
|
|
* See LICENSE-File if exists
|
||
|
|
*/
|
||
|
|
|
||
|
|
package org.openautonomousconnection.dns.utils;
|
||
|
|
|
||
|
|
import java.nio.charset.StandardCharsets;
|
||
|
|
import java.security.MessageDigest;
|
||
|
|
import java.util.ArrayList;
|
||
|
|
import java.util.Collections;
|
||
|
|
import java.util.List;
|
||
|
|
|
||
|
|
public class Utils {
|
||
|
|
public static String createAccessKey(String input) {
|
||
|
|
return sha256(shuffleString(sha256(input) + getAlphaNumericString(5) +
|
||
|
|
sha256(getAlphaNumericString(5)) +
|
||
|
|
sha256(getAlphaNumericString(5)) +
|
||
|
|
sha256(getAlphaNumericString(5))));
|
||
|
|
}
|
||
|
|
|
||
|
|
public static String sha256(final String base) {
|
||
|
|
try {
|
||
|
|
final MessageDigest digest = MessageDigest.getInstance("SHA-256");
|
||
|
|
final byte[] hash = digest.digest(base.getBytes(StandardCharsets.UTF_8));
|
||
|
|
final StringBuilder hexString = new StringBuilder();
|
||
|
|
|
||
|
|
for (byte b : hash) {
|
||
|
|
final String hex = Integer.toHexString(0xff & b);
|
||
|
|
if (hex.length() == 1) hexString.append('0');
|
||
|
|
hexString.append(hex);
|
||
|
|
}
|
||
|
|
|
||
|
|
return hexString.toString();
|
||
|
|
} catch (Exception ex) {
|
||
|
|
throw new RuntimeException(ex);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public static String getAlphaNumericString(int length) {
|
||
|
|
String chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvxyz";
|
||
|
|
StringBuilder builder = new StringBuilder(length);
|
||
|
|
|
||
|
|
for (int i = 0; i < length; i++) {
|
||
|
|
int index = (int) (chars.length() * Math.random());
|
||
|
|
builder.append(chars.charAt(index));
|
||
|
|
}
|
||
|
|
|
||
|
|
return builder.toString();
|
||
|
|
}
|
||
|
|
|
||
|
|
public static String shuffleString(String input) {
|
||
|
|
List<Character> characters = new ArrayList<>();
|
||
|
|
for (char c : input.toCharArray()) characters.add(c);
|
||
|
|
|
||
|
|
Collections.shuffle(characters);
|
||
|
|
StringBuilder shuffledString = new StringBuilder();
|
||
|
|
|
||
|
|
for (char c : characters) shuffledString.append(c);
|
||
|
|
return shuffledString.toString();
|
||
|
|
}
|
||
|
|
}
|