public static unsafe string CertGetNameString(
SafeCertContextHandle certContext,
Interop.Crypt32.CertNameType certNameType,
Interop.Crypt32.CertNameFlags certNameFlags,
Interop.Crypt32.CertNameStringType strType)
{
int cchCount = Crypt32.CertGetNameString(certContext, certNameType, certNameFlags, strType, null, 0);
if (cchCount == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
Span <char> buffer = cchCount <= 256 ? stackalloc char[cchCount] : new char[cchCount];
fixed(char *ptr = &MemoryMarshal.GetReference(buffer))
{
if (Crypt32.CertGetNameString(certContext, certNameType, certNameFlags, strType, ptr, cchCount) == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
Debug.Assert(buffer[cchCount - 1] == '\0');
return(new string(buffer.Slice(0, cchCount - 1)));
}
}