Let's imagine we have the server with self-signed certificate and the client which want to connect to the server. Client don't have the certificate from server installed on it's store.
Is it correct that client can fetch the certificate from server, add it to it's own certificate store (after user confirmation) and have secured connection?
I am asking because I don't want to spread the sertificate to all clients by some way.
I just want them to be able to download certificate from server during first connection attempt and use it, if user confirm it's trustable.
Related
Assume we are going to visit the website that is only known by our little circle, and we want to protect the connections so HTTPS will be used. Because this is a small circle, we don't want to send a X.509 request to a CA and wait for the certificate. We want to use a self-signed X.509 certificate. Now, the problem is how to add our self-signed X.509 certificate to WebView2 ecosystem, so that the embedded browser is able to visit the website? Thanks.
WebView2 uses the computer's certificate store, just like the Edge browser.
So you simply install your self-signed certificate in the certificate store, under 'Trusted root certificates'. Now the computer accepts the certificate and so will WebView2.
Actually I recommend you create two certificates, on root certificate, which can only be used for signing (That's the one you install in 'Root certificate store'), and then you use that certificate to sign your server certificate, which you install on the web server. Since this certificate is signed by a trusted certificate, the browser/WebView2 will accept it.
The root certificate must be installed on all computers, where you use WebView2. The server cerficate should only be installed on your server.
When setting up a mutual certificate based AWS client vpn the instructions show how to make the client and server certs together, shown here, for example.
I understand how to make multiple client certs, one for each user, at the time the server cert is created, but how do I create a new cert later on, without replacing the existing cert and forcing those users to install new client certs?
I am currently writing a desktop app which will need to communicate with PHP scripts on my remote server via https(with a self-signed certificate). The server-client communication code is still in the planning stages, however because I haven't yet figured out how to verify (on the client) that I am actually communicating with MY server. I'm presuming that there is some way to verify the servers identity using the certificate. I am intending to use WinHTTP for the https communication, providing it has all of the functionality that I need.
To greatly oversimplify things: clients verify the server's certificate by using a hardcoded list of trusted certificate authorities. The certificate authority list is an internal list of certificates that's baked into the client, and the client verifies that the certificate presented by the server is signed by one of the certificate authorities that the client trusts.
So, no matter what you end up doing, your client will have to keep some kind of a list of certificates that it trusts. This is a fundamental aspect of the TLS trust model. You could simply include your self-signed certificate with the client, and the client verifies that that your server presented the same certificate.
But the right answer is to run your own certificate authority. It involves some additional advance prepwork, but the end result will work much better. Instead of the several dozen, or so, standard certicicate authorities that are either included in your operating system, or your browser, your client will have exactly one trusted certificate authority in its trust list: your own certificate authority, and your client will verify that your server's certificate is signed by your certificate authority.
in wso2 esb i want to add a https proxy service and but when in define proxy service in specity source url use https://... in test url get error :
Invalid WSDL URI (Unable to establish a connection)
and in next step in definr endpoint use of an endpoint https:// ... this error apear :
Unable to validate SSL Certificate of https://....
i try to certificate a crt file and in my https proxy service in wso2\repository\resources\security\client-truststore.jks with keytool
%JAVA_HOME%\bin\keytool -genkey -alias tomcat -keyalg RSA
and enable https transport sender and recsiever in axis2.xml but my problem do not solve.
I guess, you are trying to connect to a HTTPS endpoint using proxy service. Here you want to import the endpoint server's certificate chain in the the "client-truststore.jks" flie and restart the server. However; by default HTTPS transport sender and receiver are enabled. You may not need to enable them.
But few things to remember..
In transport sender, if you do NOT want to verify the host name of the end point server with its certificate, Please configure "HostnameVerifier" property to "AllowAll". If not, if your end point server's IP and certificate CN are not matched, It would create some errors.
If end point server's certificate is a self signed on, you can just import the server's certificate. If it is a CA singed on, You need to import all the CA certificate chain.
(However most common CA certificates can be found in the "client-truststore.jks" file)
If you want to change the trust store or key store files, you can do it using transport sender configurations. By default trust store file is "client-truststore.jks" Also, if you did any changes to axis2.xml file or key stores, Please restart the server.
Also If you want to expose your proxy service using SSL, you need to enable the "https" in the proxy service. And then your client needs to user ESB server's certificate to call the proxy service.
I need to secure communication between my application and my Web Service.
I own both the application and the Web Service, and I was wondering if it is possible to use HTTPS to do so.
I don't need a certificate to prove to myself who I really am (!), so I don't want to buy an SSL certificate from a Certificate Authority. I just need to make sure no one can intercept the data I pass as WebMethod parameters; Can I create a free certificate and use that to secure communication?
One other thing: I don't want to be forced to get a dedicated, public IP address for my Web Service since it is hosted on a shared Web server.
Definitely it's doable, but hinges on a few conditions.
Create your own self signed certificate. The lack of a certificate authority won't matter in your case because your app is your own consumer.
The host must allow you to configure your IIS site with an SSL cert. Hopefully the tools they provide are good enough.
The shared IP that your web site has currently cannot have more than one certificate bound to it. You're now at the mercy of your host to not move your site to a different IP. It may or may not have an SSL cert on another site at that time. Basically - the first one wins. An IP cannot have more than one cert-secured website.
There are many articles out there showing how to create and install a self signed certificate in IIS. What you need to remember is that this certificate will not be valid as it is not delivered by a certificate authority. Once you set a certificate on the server side you need to indicate to the client to accept the invalid certificate by using the ServerCertificateValidationCallback property:
ServicePointManager.ServerCertificateValidationCallback =
(sender, certificate, chain, sslPolicyErrors) => true;
You can't use a SSL certificate (self signed or otherwise) without a dedicated IP address. Unless your shared hosting provider provides a shared SSL certificate on your IP, you will need to purchase a dedicated IP.
If you want to go through the trouble of doing it, you can use a self-signed certificate and have a tertiary server (or use the IIS server that is self-signing) to be your own certificate authority. This would allow you to generate your own certificate for free, then since you have control over the servers, you could just add your CA server as a trusted and intermediary root certificate authority.
Creating Certificate Authorities and self-signed SSL certificates