![]() To find out which certificate stores browsers consider, let’s create two certificates, one in each store.įirst, let’s create a certificate Sample machine certificate that: Instead, they show a prompt and let us select and confirm which certificate we want to use. Most browsers don’t just silently pick a client certificate when requested by a server to do mTLSĪuthentication. Experimenting with mTLS certificate prompting Let’s do a little experiment to find out. In contrast, if browsers ignore the local machine store and onlyĬonsider the current user store, then it seems safe to assume that browsers intend client certificates Use the local machine store only, then we could conclude that client certificates are meant to be So which of these certificate stores do Chrome, Edge, and Internet Explorer actually use? If they The local machine store is therefore a good place to store any certificates that identify the Because certificates are local to a machine, they Non-admin users can use certificates from the local machine store,īut they can’t add or remove any certificates. The local machine store ( cert:\LocalMachine\) is local to the computer and is global toĪll users on the computer. The current user store is not not a good place to store device certificates because the sameĬertificate might be used on multiple computers. ![]() But unless you disable credential roaming, Maybe as part of a multi-factor authentication scheme. The current user store is therefore a good place to store certificates that identify the user, To certificates that use the (TPM-backed) Platform Crypto Provider for key storage. To ensure that users can use the same certificates on all their computers. In an Active DirectoryĮnvironment, user profiles are often configured to roam so that users can access their filesĪnd settings on whatever (domain-joined) computer they log in to.Ĭertificates and credentials can roam too #NO CLIENT CERTIFICATE PRESENTED WINDOWS#Windows considers the current user store part of the user’s profile. The current user store ( cert:\CurrentUser\) is local to a user account on the computer,Īnd users have read and write access to their own store. ![]() Local machine store and the current user store: Windows has two types of certificates stores that are relevant in this context, the Manages its own certificate store, Chrome, Edge and Internet Explorer defer certificate One way to find out is to check where browsers look for client certificates. But what is reallyīeing authenticated here, the end user, their device, or both? Most browsers support client certificates for mutual TLS authentication. Do browsers use client certificates to authenticate the user, the device, or both? Posted on 2021.09.27 ![]()
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