Eclipse Java EE IDE for Web Developers installation issue (JNI shared library)

Issue:

On Windows 64bit

Failed to load JNI shared library

C:\Program Files (x86)\eclipse\jre\bin\client\jvm.dll

Solution:

add C:\Program Files\Java\jre7\bin to environment variable PATH

Why?

In Windows 7 64 bit you have

C:\Program Files as well as C:\Program Files (x86).

You can find Java folders in both of them but path might not set in appropriate way.

 

Good Luck.

Cipher Encryption and Decryption using Self Encryption Key (Java Code)

Cipher Encryption and Decryption using Self Encryption Key.

Here are two different classes for Cipher Encryption and Decryption using Self Encryption Key.

Note: Verfy myEncryptionKey length (It should be  8, 16, 32 ……bytes)

package test;
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.util.Scanner;
public class AESEncryptionTest {
private static final String ALGORITHM = “AES”;
//private static final String myEncryptionKey = “ThisIsFoundation”;
private static final String myEncryptionKey = “averylongtext!@$3434&&&&&&&&((((((34@#$#@$#*&(*&}{23432@#@#00000000232432432dsfsdf”;
private static final String UNICODE_FORMAT = “UTF8”;
public static String encrypt(String valueToEnc) throws Exception {
Key key = generateKey();
Cipher c = Cipher.getInstance(ALGORITHM);
c.init(Cipher.ENCRYPT_MODE, key);
byte[] encValue = c.doFinal(valueToEnc.getBytes());
String encryptedValue = new BASE64Encoder().encode(encValue);
return encryptedValue;
}
private static Key generateKey() throws Exception {
byte[] keyAsBytes;
keyAsBytes = myEncryptionKey.getBytes(UNICODE_FORMAT);
Key key = new SecretKeySpec(keyAsBytes, ALGORITHM);
return key;
}
public static void main(String[] args) throws Exception {
String input = “”;
System.out.println(“Enter String to Encrypt:-“);
Scanner s = new Scanner(System.in);
input = s.next();
String valueEnc = AESEncryptionDecryptionTest.encrypt(input);
System.out.println(“Encrypted : ” + valueEnc);
}
}

************************************************************************************

package test;
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.util.Scanner;
public class AESDecryptionTest {
private static final String ALGORITHM = “AES”;
//private static final String myEncryptionKey = “ThisIsFoundation”;
private static final String myEncryptionKey = “averylongtext!@$3434&&&&&&&&((((((34@#$#@$#*&(*&}{23432@#@#00000000232432432dsfsdf”;
private static final String UNICODE_FORMAT = “UTF8”;
public static String decrypt(String encryptedValue) throws Exception {
Key key = generateKey();
Cipher c = Cipher.getInstance(ALGORITHM);
c.init(Cipher.DECRYPT_MODE, key);
byte[] decordedValue = new BASE64Decoder().decodeBuffer(encryptedValue);
byte[] decValue = c.doFinal(decordedValue);
String decryptedValue = new String(decValue);
return decryptedValue;
}
private static Key generateKey() throws Exception {
byte[] keyAsBytes;
keyAsBytes = myEncryptionKey.getBytes(UNICODE_FORMAT);
Key key = new SecretKeySpec(keyAsBytes, ALGORITHM);
return key;
}
public static void main(String[] args) throws Exception {
String input = “”;
System.out.println(“Enter Encrypted String to Decrypt:-“);
Scanner s = new Scanner(System.in);
input = s.next();
// String valueEnc = “VCh4WpXtMDmMxTaPzvxj9A==”;
String valueDec = AESEncryptionDecryptionTest.decrypt(input);
System.out.println(“Decrypted : ” + valueDec);
}
}

 

Test Results:

Enter String to Encrypt:-
test
Encrypted : a/YBcxcz92oHcxGD8qLtcg==

Enter Encrypted String to Decrypt:-
a/YBcxcz92oHcxGD8qLtcg==
Decrypted : test

Good Luck.