It doesn’t request or try to get access to any other keychain item. Opera only requests access to “Opera Safe Storage”, which is Opera’s own keychain item. Keychain is a service that allows applications to securely save passwords. Your macOS uses application signatures to ensure that the software you’re running is legitimate. The application signature is also used by macOS to regulate access to the keychain. New signing certificate makes your system ask for your keychain password This is why your macOS is asking you to type in your keychain password and give Opera access to the information stored there. We would like to let you know that we have updated our software signing certificate from Opera Software ASA to Opera Software AS.