public void ByteArrayCompareReturnsFalseIfArraysAreNotTheSame()
{
byte[] test1 = { 0x01, 0xE5, 0x92, 0xBC, 0xE6, 0xA4, 0xBE, 0xE6, 0xA3, 0x8D, 0xE7, 0x9B, 0x90, 0xED, 0xBF, 0xB1 };
byte[] test2 = { 0x05, 0xE6, 0x72, 0xBC, 0xE6, 0xA4, 0xBE, 0xE6, 0xA3, 0x8D, 0xE7, 0x9B, 0x90, 0xED, 0xBF, 0xB1 };
Assert.IsFalse(ByteHelpers.ByteArrayCompare(test1, test2));
}
public void GetBytesReturnsFixedByteArray()
{
byte[] testArray = { 72, 0, 101, 0, 108, 0, 108, 0, 111, 0 };
byte[] returnedBytes = ByteHelpers.GetBytes("Hello");
Assert.IsTrue(ByteHelpers.ByteArrayCompare(testArray, returnedBytes));
}
private void CheckFileIntegrity(byte[] hash, byte[] encrypted)
{
var computedhash = SecureHash.ComputeHash(encrypted);
if (!ByteHelpers.ByteArrayCompare(computedhash, hash))
{
throw new InvalidOperationException("The signature of the file does not match.");
}
}
private static byte[] CheckHmac(byte[] dataToDecrypt, byte[] salt, AesCryptoServiceProvider aes)
{
var hmac = ByteHelpers.CreateSpecialByteArray(32);
var encryptedData = ByteHelpers.CreateSpecialByteArray(dataToDecrypt.Length - 32);
Buffer.BlockCopy(dataToDecrypt, 0, hmac, 0, 32);
Buffer.BlockCopy(dataToDecrypt, 32, encryptedData, 0, dataToDecrypt.Length - 32);
var newHmac = CreateHmac(salt, aes, encryptedData);
if (!ByteHelpers.ByteArrayCompare(hmac, newHmac))
{
throw new CryptographicException("The authenticated message code doesn't match. \n\nThe message may have been corrupted or tampered with.");
}
return(encryptedData);
}
private static bool ConfirmationPassword(PasswordEntry passwordEntry)
{
using (var passwordEntry2 = new PasswordEntry())
{
passwordEntry2.LabelText = "Please confirm your session password(s).";
if (passwordEntry2.ShowDialog() != DialogResult.OK)
{
return(false);
}
bool password1Match = ByteHelpers.ByteArrayCompare(passwordEntry.Password.Password1, passwordEntry2.Password.Password1);
bool password2Match = ByteHelpers.ByteArrayCompare(passwordEntry.Password.Password2, passwordEntry2.Password.Password2);
if ((password1Match == false) || (password2Match == false))
{
MessageBox.Show(Resources.TextShredderMainForm_ConfirmationPassword_The_passwords_do_not_match_, Resources.TextShredderMainForm_ConfirmationPassword_The_passwords_do_not_match_, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(false);
}
return(true);
}
}
public void ByteArrayCompareThrowsArgumentNullExceptionIfSecondParameterIsNull()
{
var test = new byte[5];
ByteHelpers.ByteArrayCompare(test, null);
}
public void ByteArrayCompareThrowsArgumentNullExceptionIfFirstParameterIsNull()
{
ByteHelpers.ByteArrayCompare(null, null);
}