![]() ![]() How does the CryptoTokenKit extension work? They can, however, access shared resources such as files and Keychain Access Groups. The extension and the main app run as separate processes and don’t share any memory. This is crucial since we want to support both YubiKeys with a Lightning connector, as well as NFC enabled keys.īefore we dive much further, let’s dive into an overview of iOS extensions and CTK extensions:Įxtensions are embedded into the main application and in Xcode they are configured as separate targets. It will not display any error messages if the user enters the wrong PIN code – it will just display the PIN input dialog again.Ī lack of NFC support in the CTK extension itself. The CTK extension itself has a few limitations making it difficult to deliver a good user experience, including: Searching the Internet gives very few clues and the documentation covering Apples CTK is pretty terse. ![]() One key feature we haven’t covered yet is how we implemented the CryptoTokenKit extension needed for this functionality. ![]()
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