private unsafe static byte[] Encode(string distinguishedName, X500DistinguishedNameFlags flag)
{
if (distinguishedName == null)
{
throw new ArgumentNullException("distinguishedName");
}
uint cbEncoded = 0;
uint dwStrType = CAPI.CERT_X500_NAME_STR | MapNameToStrFlag(flag);
if (!CAPI.CertStrToNameW(CAPI.X509_ASN_ENCODING | CAPI.PKCS_7_ASN_ENCODING,
distinguishedName,
dwStrType,
IntPtr.Zero,
IntPtr.Zero,
ref cbEncoded,
IntPtr.Zero))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
byte[] encodedName = new byte[cbEncoded];
fixed(byte *pbEncoded = encodedName)
{
if (!CAPI.CertStrToNameW(CAPI.X509_ASN_ENCODING | CAPI.PKCS_7_ASN_ENCODING,
distinguishedName,
dwStrType,
IntPtr.Zero,
new IntPtr(pbEncoded),
ref cbEncoded,
IntPtr.Zero))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
}
return(encodedName);
}