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GCSE Computer Science · key term
Checking a user's claimed identity, for example by checking that their username exists and that the supplied password matches that account.
Used by OCR
Paper 2
Revise: Defensive Design ConsiderationsAuthentication checks whether a user is who they claim to be. In a simple login system, the username identifies the account being claimed and the password provides evidence that the user should be allowed to use it.
Distinguish authentication from validation: an acceptable password length does not prove that the password belongs to the user.
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