/// <summary>
/// Gets the machine key implementation based on the runtime framework version.
/// </summary>
/// <returns>The machine key implementation</returns>
private static IMachineKey GetMachineKeyImpl()
{
// Late bind to the MachineKey.Protect / Unprotect methods only if <httpRuntime targetFramework="4.5" />.
// This helps ensure that round-tripping the payloads continues to work even if the application is
// deployed to a mixed 4.0 / 4.5 farm environment.
PropertyInfo targetFrameworkProperty = typeof(HttpRuntime).GetProperty("TargetFramework", typeof(Version));
Version targetFramework = (targetFrameworkProperty != null) ? targetFrameworkProperty.GetValue(null, null) as Version : null;
if (targetFramework != null && targetFramework >= new Version(4, 5))
{
ProtectUnprotect protectThunk = (ProtectUnprotect)Delegate.CreateDelegate(typeof(ProtectUnprotect), typeof(MachineKey), "Protect", ignoreCase: false, throwOnBindFailure: false);
ProtectUnprotect unprotectThunk = (ProtectUnprotect)Delegate.CreateDelegate(typeof(ProtectUnprotect), typeof(MachineKey), "Unprotect", ignoreCase: false, throwOnBindFailure: false);
if (protectThunk != null && unprotectThunk != null)
{
return(new MachineKey45(protectThunk, unprotectThunk)); // ASP.NET 4.5
}
}
return(new MachineKey40()); // ASP.NET 4.0
}
/// <summary>
/// Initializes a new instance of the <see cref="MachineKey45"/> class.
/// </summary>
/// <param name="protectThunk">The protect thunk.</param>
/// <param name="unprotectThunk">The unprotect thunk.</param>
public MachineKey45(ProtectUnprotect protectThunk, ProtectUnprotect unprotectThunk)
{
this.protectThunk = protectThunk;
this.unprotectThunk = unprotectThunk;
}
/// <summary>
/// Initializes a new instance of the <see cref="MachineKey45"/> class.
/// </summary>
/// <param name="protectThunk">The protect thunk.</param>
/// <param name="unprotectThunk">The unprotect thunk.</param>
public MachineKey45(ProtectUnprotect protectThunk, ProtectUnprotect unprotectThunk) {
this.protectThunk = protectThunk;
this.unprotectThunk = unprotectThunk;
}
