public PublicKeyInfo ToPublicKey()
{
uint infoSize = 0;
var publicKeyObjId = AlgorithmGroup == AlgorithmGroup.RSA ? OIDs.RSA_PUBLIC_KEY : OIDs.ECC_PUBLIC_KEY;
if (Crypt32.CryptExportPublicKeyInfoEx(_handle, _keySpec, EncodingType.X509_ASN_ENCODING | EncodingType.PKCS_7_ASN_ENCODING, publicKeyObjId, 0, IntPtr.Zero, IntPtr.Zero, ref infoSize))
{
var buffer = Marshal.AllocHGlobal((int)infoSize);
if (Crypt32.CryptExportPublicKeyInfoEx(_handle, _keySpec, EncodingType.X509_ASN_ENCODING | EncodingType.PKCS_7_ASN_ENCODING, publicKeyObjId, 0, IntPtr.Zero, buffer, ref infoSize))
{
return(new PublicKeyInfo(buffer));
}
throw new Win32Exception(Marshal.GetLastWin32Error());
}
throw new Win32Exception(Marshal.GetLastWin32Error());
}