C# CryptographicException:加密操作期间发生错误：如何自动修复它？

这是my Global.ascx.cs，带有FormsAuthentication：

已经尝试了一些书面建议，但没有解决问题

我不在Azure上。我不想使用该解决方案删除cookie，al可以：不能强制用户删除cookie。系统必须自动完成这项工作

我在哪里能修好它？也许我错过了一些全局错误处理程序？

---

似乎应用程序错误没有被调用，可能？

处理不可加密的cookie的方式与处理任何cookie的方式相同

protected FormsAuthenticationTicket GetAuthTicket()
{
    HttpCookie authCookie = Request.Cookies["CookieFA"];
    if (authCookie == null) return null;
    try
    {
        return FormsAuthentication.Decrypt(authCookie.Value);
    }
    catch(System.CryptographicException exception)
    {
        _errorLog.Write("Can't decrypt cookie! {0}", exception.Message);
        return null;
    }
}

protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
{
    var authTicket = GetAuthTicket();
    if (authTicket != null)
    {
        CustomPrincipal principal = new CustomPrincipal(authTicket.Name);
        CustomPrincipalSerializeModel userSerializeModel = JsonConvert.DeserializeObject<CustomPrincipalSerializeModel>(authTicket.UserData);
        principal.UserID = userSerializeModel.ID;
        principal.FirstName = userSerializeModel.FirstName;
        principal.LastName = userSerializeModel.LastName;
        principal.Roles = userSerializeModel.RoleName.ToArray<string>();

        HttpContext.Current.User = principal;
    }
}

---

不用说，您还应该调查这些异常发生的原因，例如每个应用程序池回收。

这似乎是可行的。我可以删除应用程序错误吗？

[CryptographicException: Error occurred during a cryptographic operation.]
   System.Web.Security.Cryptography.HomogenizingCryptoServiceWrapper.HomogenizeErrors(Func`2 func, Byte[] input) +115
   System.Web.Security.Cryptography.HomogenizingCryptoServiceWrapper.Unprotect(Byte[] protectedData) +70
   System.Web.Security.FormsAuthentication.Decrypt(String encryptedTicket) +9778338
   GPMS.MvcApplication.Application_PostAuthenticateRequest(Object sender, EventArgs e) in C:\repos\GPMS\GPMS\Global.asax.cs:32
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +141
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +48
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +71

protected FormsAuthenticationTicket GetAuthTicket()
{
    HttpCookie authCookie = Request.Cookies["CookieFA"];
    if (authCookie == null) return null;
    try
    {
        return FormsAuthentication.Decrypt(authCookie.Value);
    }
    catch(System.CryptographicException exception)
    {
        _errorLog.Write("Can't decrypt cookie! {0}", exception.Message);
        return null;
    }
}

protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
{
    var authTicket = GetAuthTicket();
    if (authTicket != null)
    {
        CustomPrincipal principal = new CustomPrincipal(authTicket.Name);
        CustomPrincipalSerializeModel userSerializeModel = JsonConvert.DeserializeObject<CustomPrincipalSerializeModel>(authTicket.UserData);
        principal.UserID = userSerializeModel.ID;
        principal.FirstName = userSerializeModel.FirstName;
        principal.LastName = userSerializeModel.LastName;
        principal.Roles = userSerializeModel.RoleName.ToArray<string>();

        HttpContext.Current.User = principal;
    }
}