authentication information; credentials
Technical term in computing for data used to verify identity, such as passwords, tokens, or certificates.
Please enter your authentication information to log in.
Because the authentication information was leaked, I changed my password.
認証 is the act of authentication itself, while 認証情報 refers to the specific data used for that purpose.
資格情報 is a near-synonym also meaning 'credentials', often used in similar technical contexts.
Compound of 認証 (authentication) and 情報 (information). A modern technical term.