private static Interop.Crypt32.CertNameStrTypeAndFlags MapNameToStrFlag(X500DistinguishedNameFlags flag)
{
// All values or'ed together. Change this if you add values to the enumeration.
uint allFlags = 0x71F1;
uint dwFlags = (uint)flag;
Debug.Assert((dwFlags & ~allFlags) == 0);
Interop.Crypt32.CertNameStrTypeAndFlags dwStrType = 0;
if (dwFlags != 0)
{
if ((flag & X500DistinguishedNameFlags.Reversed) == X500DistinguishedNameFlags.Reversed)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_REVERSE_FLAG;
if ((flag & X500DistinguishedNameFlags.UseSemicolons) == X500DistinguishedNameFlags.UseSemicolons)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_SEMICOLON_FLAG;
else if ((flag & X500DistinguishedNameFlags.UseCommas) == X500DistinguishedNameFlags.UseCommas)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_COMMA_FLAG;
else if ((flag & X500DistinguishedNameFlags.UseNewLines) == X500DistinguishedNameFlags.UseNewLines)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_CRLF_FLAG;
if ((flag & X500DistinguishedNameFlags.DoNotUsePlusSign) == X500DistinguishedNameFlags.DoNotUsePlusSign)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_NO_PLUS_FLAG;
if ((flag & X500DistinguishedNameFlags.DoNotUseQuotes) == X500DistinguishedNameFlags.DoNotUseQuotes)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_NO_QUOTING_FLAG;
if ((flag & X500DistinguishedNameFlags.ForceUTF8Encoding) == X500DistinguishedNameFlags.ForceUTF8Encoding)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_FORCE_UTF8_DIR_STR_FLAG;
if ((flag & X500DistinguishedNameFlags.UseUTF8Encoding) == X500DistinguishedNameFlags.UseUTF8Encoding)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_ENABLE_UTF8_UNICODE_FLAG;
else if ((flag & X500DistinguishedNameFlags.UseT61Encoding) == X500DistinguishedNameFlags.UseT61Encoding)
dwStrType |= Interop.Crypt32.CertNameStrTypeAndFlags.CERT_NAME_STR_ENABLE_T61_UNICODE_FLAG;
}
return dwStrType;
}
public byte[] X500DistinguishedNameEncode(string distinguishedName, X500DistinguishedNameFlags flag)
{
Debug.Assert(distinguishedName != null);
Interop.Crypt32.CertNameStrTypeAndFlags dwStrType = Interop.Crypt32.CertNameStrTypeAndFlags.CERT_X500_NAME_STR | MapNameToStrFlag(flag);
int cbEncoded = 0;
if (!Interop.Crypt32.CertStrToName(Interop.Crypt32.CertEncodingType.All, distinguishedName, dwStrType, IntPtr.Zero, null, ref cbEncoded, IntPtr.Zero))
throw Marshal.GetLastWin32Error().ToCryptographicException();
byte[] encodedName = new byte[cbEncoded];
if (!Interop.Crypt32.CertStrToName(Interop.Crypt32.CertEncodingType.All, distinguishedName, dwStrType, IntPtr.Zero, encodedName, ref cbEncoded, IntPtr.Zero))
throw Marshal.GetLastWin32Error().ToCryptographicException();
return encodedName;
}
