Hi! I was buying a book on a well known webshop. I used my Android Galaxy A25 and Firefox browser. When I was almost ready after IDentification on the payment webservice, also well known, I got a message that I was expected to choose a certificate. There were two to choose from: gak_ec_alias and gak_rsa_alias. How can I know that this is a serious safe action for me to do? I know certificates are used for encryption of communication or transactions, but this is the first time I've been asked to choose one! How shall I treat this? Is the web shop missing a certificate, or Is firefox missing a certificate? Is the certificate going to be used everywhere I surf, or just on the webshop where I bought the book, or on the payment webservice?

Greatful for answers! Janne