Skip to content

Instantly share code, notes, and snippets.

@ulymarins
Last active October 6, 2020 11:18
Show Gist options
  • Save ulymarins/13b191cdc5e4a9fde8ec5d7aeeb2e6c8 to your computer and use it in GitHub Desktop.
Save ulymarins/13b191cdc5e4a9fde8ec5d7aeeb2e6c8 to your computer and use it in GitHub Desktop.
Java Encryption with AES
import java.math.BigInteger;
import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.util.Random;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
public class Crypto {
private static final String KEY = "u12hUPtyGhg5WR3t";
private static final String INIT_VECTOR = "RandomInitVector";
public static String encryptAES(String value) {
try {
IvParameterSpec iv = new IvParameterSpec(INIT_VECTOR.getBytes("UTF-8"));
SecretKeySpec skeySpec = new SecretKeySpec(KEY.getBytes("UTF-8"), "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
byte[] encrypted = cipher.doFinal(value.getBytes());
return Base64.encodeBase64String(encrypted);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
public static String decryptAES(String encrypted) {
try {
IvParameterSpec iv = new IvParameterSpec(INIT_VECTOR.getBytes("UTF-8"));
SecretKeySpec skeySpec = new SecretKeySpec(KEY.getBytes("UTF-8"), "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));
return new String(original);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment