@Test
public void testEncryptDecrypt256_falseKey() {
System.out.println("crypt false key");
byte[] plainInput = "Text to Test for Testing from Tester by Testcase".getBytes();
KeyGenSHA3 keyGen = new KeyGenSHA3();
String hexKey = keyGen.generateKey(256, "password");
byte[] bKey = CryptobyHelper.hexStringToBytes(hexKey);
CryptAES instance = new CryptAES();
byte[] expResult = plainInput;
byte[] result = instance.encrypt(plainInput, bKey);
hexKey = keyGen.generateKey(256, "passwordFalse");
bKey = CryptobyHelper.hexStringToBytes(hexKey);
result = instance.decrypt(result, bKey);
assertFalse(new String(expResult).equals(new String(result)));
}
@Test
public void testEncryptDecrypt256_HugeData() {
System.out.println("encrypt and decrypt huge Data");
byte[] plainInput = new byte[1000000];
KeyGenSHA3 keyGen = new KeyGenSHA3();
String hexKey = keyGen.generateKey(256, "password");
byte[] bKey = CryptobyHelper.hexStringToBytes(hexKey);
CryptAES instance = new CryptAES();
byte[] expResult = plainInput;
byte[] result = instance.encrypt(plainInput, bKey);
result = instance.decrypt(result, bKey);
assertArrayEquals(expResult, result);
}
@Test
public void testEncryptDecrypt256_CBC() {
System.out.println("encrypt and decrypt recurring words");
byte[] plainInput =
"TestTestTestTestTestTestTestTestTestTestTestTestTestTestTestTest".getBytes();
KeyGenSHA3 keyGen = new KeyGenSHA3();
String hexKey = keyGen.generateKey(256, "password");
byte[] bKey = CryptobyHelper.hexStringToBytes(hexKey);
CryptAES instance = new CryptAES();
byte[] expResult = plainInput;
byte[] result = instance.encrypt(plainInput, bKey);
String resString = CryptobyHelper.bytesToHexStringUpper(result);
for (int i = 0; i < resString.length() - 32; i += 32) {
assertFalse(resString.substring(i, i + 32).equals(resString.substring(i + 32, i + 64)));
}
result = instance.decrypt(result, bKey);
assertArrayEquals(expResult, result);
}