问题:

As Paypal updated their response, I need to update security protocols TLS to v1.2 in my existing application which is on .NET 3.5 framework. What changes required to update this in existing code, I cannot update the application to newer framework.

回答1:

I'm using VS 2008 with .net 3.5.30729.4926. All I had to do was:

Add imports:

Imports System.Security.Authentication Imports System.Net

Add this to my code (C#):

public const SslProtocols _Tls12 = (SslProtocols)0x00000C00; public const SecurityProtocolType Tls12 = (SecurityProtocolType)_Tls12; ServicePointManager.SecurityProtocol = Tls12

VB.net version:

Const _Tls12 As SslProtocols = DirectCast(&HC00, SslProtocols) Const Tls12 As SecurityProtocolType = DirectCast(_Tls12, SecurityProtocolType) ServicePointManager.SecurityProtocol = Tls12  Dim wbrq As HttpWebRequest Dim wbrs As HttpWebResponse Dim sw As StreamWriter Dim sr As StreamReader Dim strResult As String  'Create a new HttpWebRequest object. wbrq = WebRequest.Create(strURL) wbrq.Method = "POST" wbrq.ContentLength = DataString.Length wbrq.ContentType = "application/x-www-form-urlencoded"  'upload data sw = New StreamWriter(wbrq.GetRequestStream) sw.Write(DataString) sw.Close()  'get response wbrs = wbrq.GetResponse sr = New StreamReader(wbrs.GetResponseStream) strResult = sr.ReadToEnd.Trim sr.Close()

回答2:

If you are on NET 3.5.1 you have an option of applying a rollup hotfix and apply a registry edit to tell .NET to use the system default. More details here

Failing that you need to be using .NET 4.5 for TLS 1.2 & 1.1 support and on Windows Server 2008 R2 at a minimum.

转载请标明出处:How to implement Security Protocols TLS 1.2 in .Net 3.5 framework

文章来源: How to implement Security Protocols TLS 1.2 in .Net 3.5 framework

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