private void DecodeExtension()
{
uint cbDecodedValue = 0;
SafeLocalAllocHandle decodedValue = null;
if (base.Oid.Value == "2.5.29.10")
{
if (!CAPI.DecodeObject(new IntPtr(13L), base.m_rawData, out decodedValue, out cbDecodedValue))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
CAPIBase.CERT_BASIC_CONSTRAINTS_INFO cert_basic_constraints_info = (CAPIBase.CERT_BASIC_CONSTRAINTS_INFO)Marshal.PtrToStructure(decodedValue.DangerousGetHandle(), typeof(CAPIBase.CERT_BASIC_CONSTRAINTS_INFO));
byte[] destination = new byte[1];
Marshal.Copy(cert_basic_constraints_info.SubjectType.pbData, destination, 0, 1);
this.m_isCA = (destination[0] & 0x80) != 0;
this.m_hasPathLenConstraint = cert_basic_constraints_info.fPathLenConstraint;
this.m_pathLenConstraint = (int)cert_basic_constraints_info.dwPathLenConstraint;
}
else
{
if (!CAPI.DecodeObject(new IntPtr(15L), base.m_rawData, out decodedValue, out cbDecodedValue))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
CAPIBase.CERT_BASIC_CONSTRAINTS2_INFO cert_basic_constraints_info2 = (CAPIBase.CERT_BASIC_CONSTRAINTS2_INFO)Marshal.PtrToStructure(decodedValue.DangerousGetHandle(), typeof(CAPIBase.CERT_BASIC_CONSTRAINTS2_INFO));
this.m_isCA = cert_basic_constraints_info2.fCA != 0;
this.m_hasPathLenConstraint = cert_basic_constraints_info2.fPathLenConstraint != 0;
this.m_pathLenConstraint = (int)cert_basic_constraints_info2.dwPathLenConstraint;
}
this.m_decoded = true;
decodedValue.Dispose();
}
private static unsafe byte[] EncodeExtension(bool certificateAuthority, bool hasPathLengthConstraint, int pathLengthConstraint)
{
CAPIBase.CERT_BASIC_CONSTRAINTS2_INFO cert_basic_constraints_info = new CAPIBase.CERT_BASIC_CONSTRAINTS2_INFO {
fCA = certificateAuthority ? 1 : 0,
fPathLenConstraint = hasPathLengthConstraint ? 1 : 0
};
if (hasPathLengthConstraint)
{
if (pathLengthConstraint < 0)
{
throw new ArgumentOutOfRangeException("pathLengthConstraint", SR.GetString("Arg_OutOfRange_NeedNonNegNum"));
}
cert_basic_constraints_info.dwPathLenConstraint = (uint)pathLengthConstraint;
}
byte[] encodedData = null;
if (!CAPI.EncodeObject("2.5.29.19", new IntPtr((void *)&cert_basic_constraints_info), out encodedData))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
return(encodedData);
}
