I\'m looking for a way to clear the SSL client certificate cache in Firefox as a kind of \"log out\" functionality so that the server does not recognize me anymore via the clien
You can enable window.crypto by setting
window.crypto
dom.webcrypto.enabled = true
in about:config.
about:config
However there is no out of box replacement for FF 33. It seems like Mozilla rolled it back in FF34, so it should be available there again.
EDIT: There is an replacement: http://www.w3.org/TR/WebCryptoAPI/