I am using the following LINK for encryption and tried it with Strings and it worked. However, since I am dealing with images, I needed the encryption/decryption process to happen with byte arrays. So I modified the code in that link to the following:
public class AESencrp {
private static final String ALGO = "AES";
private static final byte[] keyValue =
new byte[] { 'T', 'h', 'e', 'B', 'e', 's', 't',
'S', 'e', 'c', 'r','e', 't', 'K', 'e', 'y' };
public static byte[] encrypt(byte[] Data) throws Exception {
Key key = generateKey();
Cipher c = Cipher.getInstance(ALGO);
c.init(Cipher.ENCRYPT_MODE, key);
byte[] encVal = c.doFinal(Data);
//String encryptedValue = new BASE64Encoder().encode(encVal);
return encVal;
}
public static byte[] decrypt(byte[] encryptedData) throws Exception {
Key key = generateKey();
Cipher c = Cipher.getInstance(ALGO);
c.init(Cipher.DECRYPT_MODE, key);
byte[] decValue = c.doFinal(encryptedData);
return decValue;
}
private static Key generateKey() throws Exception {
Key key = new SecretKeySpec(keyValue, ALGO);
return key;
}
and the checker class is:
public class Checker {
public static void main(String[] args) throws Exception {
byte[] array = new byte[]{127,-128,0};
byte[] arrayEnc = AESencrp.encrypt(array);
byte[] arrayDec = AESencrp.decrypt(arrayEnc);
System.out.println("Plain Text : " + array);
System.out.println("Encrypted Text : " + arrayEnc);
System.out.println("Decrypted Text : " + arrayDec);
}
}
However my output is:
Plain Text : [B@1b10d42
Encrypted Text : [B@dd87b2
Decrypted Text : [B@1f7d134
So the decrypted text is not the same as plain text. What should I do to fix this knowing that I tried the example in the original link and it worked with Strings?
See Question&Answers more detail:
os 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…