/// <summary>
/// The get user key.
/// </summary>
/// <param name="keySpec">
/// The key spec.
/// </param>
/// <returns>
/// The <see cref="KeyContext"/>.
/// </returns>
/// <exception cref="Win32Exception">
/// </exception>
private KeyContext GetUserKey(int keySpec = 0)
{
var keyPiarHandler = IntPtr.Zero;
if (!CryptoApi.CryptGetUserKey(cspHandler, keySpec, ref keyPiarHandler))
{
throw new Win32Exception();
}
var keyPairContext = new KeyContext(keyPiarHandler);
return(keyPairContext);
}
/// <summary>
/// The generate random key.
/// </summary>
/// <param name="keyNumber">
/// The key number.
/// </param>
/// <param name="flags">
/// The flags.
/// </param>
/// <returns>
/// The <see cref="KeyContext"/>.
/// </returns>
/// <exception cref="Win32Exception">
/// </exception>
private KeyContext GenerateRandomKey(KeyNumber keyNumber, int flags = 0)
{
var keyPiarHandler = IntPtr.Zero;
if (!CryptoApi.CryptGenKey(cspHandler, (int)keyNumber, flags, ref keyPiarHandler))
{
throw new Win32Exception();
}
var keyPairContext = new KeyContext(keyPiarHandler);
return(keyPairContext);
}
/// <summary>
/// The create hash.
/// </summary>
/// <param name="keyContext">
/// The key context.
/// </param>
/// <param name="algid">
/// The algid.
/// </param>
/// <param name="flags">
/// The flags.
/// </param>
/// <returns>
/// The <see cref="HashContext"/>.
/// </returns>
/// <exception cref="Win32Exception">
/// </exception>
private HashContext CreateHash(KeyContext keyContext, int algid, int flags)
{
var hashHandler = IntPtr.Zero;
var keyHandler = IntPtr.Zero;
if (keyContext != null)
{
keyHandler = keyContext.Handler;
}
if (!CryptoApi.CryptCreateHash(cspHandler, algid, keyHandler, flags, ref hashHandler))
{
throw new Win32Exception();
}
var hashContext = new HashContext(hashHandler);
return(hashContext);
}
/// <summary>
/// The import key.
/// </summary>
/// <param name="protectionKeyContext">
/// The protection key context.
/// </param>
/// <param name="keyData">
/// The key data.
/// </param>
/// <param name="keyDataLength">
/// The key data length.
/// </param>
/// <param name="flags">
/// The flags.
/// </param>
/// <returns>
/// The <see cref="KeyContext"/>.
/// </returns>
/// <exception cref="Win32Exception">
/// </exception>
private KeyContext ImportKey(KeyContext protectionKeyContext, byte[] keyData, int keyDataLength, int flags)
{
var protectionKeyHandler = IntPtr.Zero;
if (protectionKeyContext != null)
{
protectionKeyHandler = protectionKeyContext.Handler;
}
var keyHandler = IntPtr.Zero;
if (!CryptoApi.CryptImportKey(cspHandler, keyData, keyDataLength, protectionKeyHandler, flags, ref keyHandler))
{
throw new Win32Exception();
}
var keyContext = new KeyContext(keyHandler);
return(keyContext);
}
/// <summary>
/// Экспорт открытого ключа.
/// </summary>
/// <param name="context">
/// Контекст ключей.
/// </param>
/// <returns>
/// Открытый ключ.
/// </returns>
public byte[] ExportPublicKey(KeyContext context = null)
{
var result = ExportKey(context, Constants.PublicKeyBlob, 0);
return(result);
}