/// <summary>
/// Initializes properties
/// </summary>
/// <param name="api">The type of crypto api selected</param>
private void InitializeProperties(CryptographyApi api)
{
//according to the selected cipher api create a cipher object
switch (api)
{
case CryptographyApi.MSDN:
SelectedCipherApi = new MsdnSymmetricCipher();
break;
case CryptographyApi.BouncyCastle:
SelectedCipherApi = new BouncySymmetricCipher();
break;
default:
Debugger.Break();
break;
}
//Gets all the available algorithims from cipher api
Algorithims = SelectedCipherApi.GetAlgorthims();
//Gets all the available key sizes for the currently selected algorithim
KeySizes = SelectedCipherApi.GetKeySizes(SelectedAlgorithim);
//As default select the first item in the list
SelectedKeySize = KeySizes[0];
//Gets the iv size of the currently selected algorithim
IvSize = SelectedCipherApi.GetIvSize(SelectedAlgorithim);
///Subscribe to the DataChanged event from the <see cref="DataInputViewModel"/>
DataInput.DataChanged += DataChanged;
}
/// <summary>
/// Adds all the hash algorithims strings to the list
/// </summary>
/// <param name="api"></param>
public HashItemListViewModel(CryptographyApi api)
{
switch (api)
{
case CryptographyApi.MSDN:
foreach (var item in Enum.GetValues(typeof(MsdnHashAlgorithim)).Cast <MsdnHashAlgorithim>().ToList())
{
Items.Add(new HashItemViewModel
{
HashName = item.ToString(),
});
}
break;
case CryptographyApi.BouncyCastle:
foreach (var item in Enum.GetValues(typeof(BouncyHashAlgorithim)).Cast <BouncyHashAlgorithim>().ToList())
{
Items.Add(new HashItemViewModel
{
HashName = item.ToString(),
});
}
break;
default:
Debugger.Break();
break;
}
}
/// <summary>
/// Overloaded constructor
/// </summary>
/// <param name="api">the selected crypto library</param>
/// <param name="operation">The selected crypto operation</param>
public AsymmetricViewModel(CryptographyApi api, AsymmetricOperation operation)
{
//Initialize the commands
InitializeCommands();
//Initialize properties
InitializeProperties(api, operation);
}
/// <summary>
/// Overloaded constructor
/// </summary>
public SymmetricViewModel(CryptographyApi api)
{
//Initialize the commands
InitializeCommands();
//Initialize properties
InitializeProperties(api);
}
/// <summary>
/// Overloaded Constructor
/// </summary>
/// <param name="api">the selected crypto library</param>
/// <param name="operation">The selected crypto operation</param>
public KeyPairSetupViewModel(CryptographyApi api, AsymmetricOperation operation)
{
//Initialize the commands
InitializeCommands();
//Initialize properties
InitializeProperties(api, operation);
//Initialize lists must be after setting api and operation
InitializeLists();
}
/// <summary>
/// Overloaded constructor
/// </summary>
/// <param name="api">The api to use</param>
public HashViewModel(CryptographyApi api)
{
//Initialize the commands
InitializeCommands();
crpytoApi = api;
//Create the hash list options according to the selected api
HashList = new HashItemListViewModel(crpytoApi);
///Subscribe to the DataChanged event from the <see cref="DataInputViewModel"/>
DataInput.DataChanged += DataChanged;
}
/// <summary>
/// Initialize any properties
/// </summary>
/// <param name="api"></param>
/// <param name="operation"></param>
private void InitializeProperties(CryptographyApi api, AsymmetricOperation operation)
{
KeyPairSetup = new KeyPairSetupViewModel(api, operation);
//Hook into the DataChanged event
DataInput.DataChanged += DataInput_DataChanged;
//Hook into the KeysLoaded event
KeyPairSetup.KeysLoaded += KeyPairSetup_KeysLoaded;
//Hook into the KeyPairChanged event
KeyPairSetup.KeyPairChanged += KeyPairSetup_KeyPairChanged;
}
/// <summary>
/// Calcualte the hash value according to the set hash algorithim and set the hash value
/// </summary>
/// <param name="data"></param>
public void CalculateHash(byte[] data, byte[] key, CryptographyApi api)
{
byte[] value = null;
switch (api)
{
case CryptographyApi.MSDN:
value = MsdnHash.Compute(msdnHashAlgorithim, data, key);
HashValue = BitConverter.ToString(value).Replace("-", string.Empty);
break;
case CryptographyApi.BouncyCastle:
value = BouncyHash.Compute(bouncyHashAlgorithim, data, key);
HashValue = BitConverter.ToString(value).Replace("-", string.Empty);
break;
}
}
/// <summary>
/// Initializes any properties
/// </summary>
/// <param name="api">the crypto api to use</param>
/// <param name="operation">The operation to use</param>
private void InitializeProperties(CryptographyApi api, AsymmetricOperation operation)
{
Api = api;
SelectedOperation = operation;
KeyDirectoryPath = pKeyPath;
}
