/// <summary>
/// Retrieves parameters that govern the operations of a cryptographic service provider (CSP).
/// </summary>
/// <param name="hProv">A handle of the CSP target of the query. This handle must have been created by using the CryptAcquireContext function.</param>
/// <param name="dwParam">The nature of the query.</param>
/// <param name="dwFlags">
/// If <paramref name="dwParam"/> is <see cref="CryptGetProvParamQuery.PP_KEYSET_SEC_DESCR"/>, the security descriptor on the key container where the keys are stored is retrieved.
/// For this case, <paramref name="dwFlags"/> is used to pass in the <see cref="SECURITY_INFORMATION"/> bit flags that indicate the requested security information,
/// as defined in the Platform SDK. <see cref="SECURITY_INFORMATION"/> bit flags can be combined with a bitwise-OR operation.
/// </param>
/// <returns>The property value.</returns>
/// <exception cref="Win32Exception">Thrown when an error occurs.</exception>
public static unsafe byte[] CryptGetProvParam(SafeHandle hProv, CryptGetProvParamQuery dwParam, uint dwFlags)
{
var requiredSize = 0;
if (!CryptGetProvParam(hProv, dwParam, null, ref requiredSize, dwFlags))
{
throw new Win32Exception();
}
var propertyBuffer = new byte[requiredSize];
fixed(byte *pbData = propertyBuffer)
{
if (!CryptGetProvParam(hProv, dwParam, pbData, ref requiredSize, dwFlags))
{
throw new Win32Exception();
}
}
return(propertyBuffer);
}
public static extern unsafe bool CryptGetProvParam(
SafeHandle hProv,
CryptGetProvParamQuery dwParam,
[Friendly(FriendlyFlags.Out | FriendlyFlags.Optional)] byte* pbData,
ref int pdwDataLen,
uint dwFlags);
/// <summary>
/// Retrieves parameters that govern the operations of a cryptographic service provider (CSP).
/// </summary>
/// <param name="hProv">A handle of the CSP target of the query. This handle must have been created by using the CryptAcquireContext function.</param>
/// <param name="dwParam">The nature of the query.</param>
/// <param name="dwFlags">
/// If <paramref name="dwParam"/> is <see cref="CryptGetProvParamQuery.PP_KEYSET_SEC_DESCR"/>, the security descriptor on the key container where the keys are stored is retrieved.
/// For this case, <paramref name="dwFlags"/> is used to pass in the <see cref="SECURITY_INFORMATION"/> bit flags that indicate the requested security information,
/// as defined in the Platform SDK. <see cref="SECURITY_INFORMATION"/> bit flags can be combined with a bitwise-OR operation.
/// </param>
/// <returns>The property value.</returns>
/// <exception cref="Win32Exception">Thrown when an error occurs.</exception>
public static unsafe byte[] CryptGetProvParam(SafeHandle hProv, CryptGetProvParamQuery dwParam, uint dwFlags)
{
var requiredSize = 0;
if (!CryptGetProvParam(hProv, dwParam, null, ref requiredSize, dwFlags))
{
throw new Win32Exception();
}
var propertyBuffer = new byte[requiredSize];
fixed (byte* pbData = propertyBuffer)
{
if (!CryptGetProvParam(hProv, dwParam, pbData, ref requiredSize, dwFlags))
{
throw new Win32Exception();
}
}
return propertyBuffer;
}