protected static int IPSecGetISAKMPData(IntPtr hStore, Guid ISAKMPGUID, out IPSEC_ISAKMP_DATA ipsecISAKMPData)
{
ipsecISAKMPData = new IPSEC_ISAKMP_DATA();
//Allocate memory for the struct pointer.
IntPtr ppIpsecISAKMPData = Marshal.AllocHGlobal(Marshal.SizeOf(new IntPtr()));
int hr = IPSecGetISAKMPData(hStore, ISAKMPGUID, ppIpsecISAKMPData);
if (hr != 0)
{
return(hr);
}
//Dereference the ppIpsecISAKMPData into a pointer.
IntPtr pIpsecISAKMPData = Marshal.ReadIntPtr(ppIpsecISAKMPData);
//Cast the ptr.
ipsecISAKMPData = (IPSEC_ISAKMP_DATA)Marshal.PtrToStructure(pIpsecISAKMPData, typeof(IPSEC_ISAKMP_DATA));
//Free memory allocations.
Marshal.FreeHGlobal(ppIpsecISAKMPData);
return(hr);
}
protected static int IPSecCreateISAKMPData(IntPtr hStore, IPSEC_ISAKMP_DATA ipsecISAKMPData)
{
IntPtr pIpsecISAKMPData = Marshal.AllocHGlobal(Marshal.SizeOf(ipsecISAKMPData));
Marshal.StructureToPtr(ipsecISAKMPData, pIpsecISAKMPData, false);
int hr = IPSecCreateISAKMPData(hStore, pIpsecISAKMPData);
Marshal.FreeHGlobal(pIpsecISAKMPData);
return(hr);
}
/// <summary>
///
/// </summary>
/// <param name="manualISAKMPData"></param>
/// <returns></returns>
private int CreateIpsecSakmpData(out IPSEC_ISAKMP_DATA manualISAKMPData)
{
NativeMethods.Oakdefs.CRYPTO_BUNDLE pSecurityMethods = new()
{
EncryptionAlgorithm = new NativeMethods.Oakdefs.OAKLEY_ALGORITHM()
{
AlgorithmIdentifier = 3, Rounds = 8, KeySize = 64
},
HashAlgorithm = new NativeMethods.Oakdefs.OAKLEY_ALGORITHM()
{
AlgorithmIdentifier = 2, Rounds = 0, KeySize = 64
},
Lifetime = new NativeMethods.Oakdefs.OAKLEY_LIFETIME()
{
KBytes = 0, Seconds = 28800
},
};
manualISAKMPData = new IPSEC_ISAKMP_DATA()
{
ISAKMPIdentifier = Guid.NewGuid(),
dwWhenChanged = (int)new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds(),
dwNumISAKMPSecurityMethods = 2,
pSecurityMethods = Marshal.AllocHGlobal(Marshal.SizeOf(pSecurityMethods)),
};
manualISAKMPData.ISAKMPPolicy = new NativeMethods.Oakdefs.ISAKMP_POLICY()
{
AquireSize = 28800,
PolicyId = manualISAKMPData.ISAKMPIdentifier
};
Marshal.StructureToPtr(pSecurityMethods, manualISAKMPData.pSecurityMethods, false);
int hr = IPSecCreateISAKMPData(hStore, manualISAKMPData);
Marshal.FreeHGlobal(manualISAKMPData.pSecurityMethods);
return(hr);
}
/// <summary> /// /// </summary> /// <param name="ISAKMPGUID"></param> /// <param name="ipsecIsakmpData"></param> /// <returns></returns> private int GetISAKMPData(Guid ISAKMPGUID, out IPSEC_ISAKMP_DATA ipsecIsakmpData) => IPSecGetISAKMPData(hStore, ISAKMPGUID, out ipsecIsakmpData);
