Store encrypted data within encoded cookies for use in server-side implementations without requiring sessions.
Note: 0.2 version of the assembly uses new .NET machine key api. Use NET40 compiler constant to target 4.0 encode/decode pair (obsolete, but works). Use NET45 compiler constant to target 4.5 protect/unprotect pair. Delta code added by Keyur, Infosys.
I originally wrote about the need for encrypted cookies a while back, 2006 to be accurate: http://www.codeproject.com/Articles/8742/Encrypting-Cookies-to-prevent-tampering
This library is conveniently hosted on NuGet at http://nuget.org/httpsecurecookie
PS> Install-Package httpsecurecookie
Some sample code to illustrate how easy it is to encrypt:
voidSet_CookieValue(){HttpCookiecookie=newHttpCookie("protect");cookie.Value="protect_this_value";Response.Cookies.Set(HttpCookieEncryption.Encrypt(cookie));}voidGet_CookieValue(){HttpCookieprotected=HttpCookieEncryption.Decrypt(Request.Cookies["protect"]);stringprotected_And_tamperProof_Value=protected.Value;}