public static List <ProviderAlgorithm> GetProviderAlgorithms(SafeProvHandleImpl providerHandler)
{
List <ProviderAlgorithm> algorithms = new List <ProviderAlgorithm>();
uint dataLen = 0;
PROVENUMALGS_EX alg;
if (CryptoApi.CryptGetProvParam(providerHandler, Constants.PP_ENUMALGS_EX, (byte[])null, ref dataLen, 0x1))
{
var byteBuffer = new byte[dataLen];
if (CryptoApi.CryptGetProvParam(providerHandler, Constants.PP_ENUMALGS_EX, byteBuffer, ref dataLen, 0x1))
{
alg = getAlgInfo(byteBuffer);
algorithms.Add(new ProviderAlgorithm(alg));
while (CryptoApi.CryptGetProvParam(providerHandler, Constants.PP_ENUMALGS_EX, (byte[])null, ref dataLen, 0x2))
{
byteBuffer = new byte[dataLen];
if (CryptoApi.CryptGetProvParam(providerHandler, Constants.PP_ENUMALGS_EX, byteBuffer, ref dataLen, 0x2))
{
alg = getAlgInfo(byteBuffer);
algorithms.Add(new ProviderAlgorithm(alg));
}
}
}
}
else
{
throw CreateWin32Error();
};
unsafe PROVENUMALGS_EX getAlgInfo(byte[] buff)
{
PROVENUMALGS_EX result;
fixed(void *h = buff)
{
var ptr = new IntPtr(h);
result = Marshal.PtrToStructure <PROVENUMALGS_EX>(ptr);
//var handle = GCHandle.Alloc(buff, GCHandleType.Pinned);
//var a = Marshal.PtrToStructure<PROVENUMALGS>(handle.AddrOfPinnedObject());
//handle.Free();
}
return(result);
}
return(algorithms);
}
public static string GetProviderParameterAsString(SafeProvHandleImpl providerHandle, uint paramId)
{
StringBuilder paramValue = null;
uint dwDataLen = 0;
if (CryptoApi.CryptGetProvParam(providerHandle, paramId, paramValue, ref dwDataLen, 0))
{
paramValue = new StringBuilder((int)dwDataLen);
CryptoApi.CryptGetProvParam(providerHandle, paramId, paramValue, ref dwDataLen, 0);
}
else
{
throw CreateWin32Error();
}
return(paramValue?.ToString());
}