authentication

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Related to Authenticated copy: notary public, Apostille

authentication

[ə‚thent·ə′kā·shən]
(communications)
Security measure designed to protect a communications system against fraudulent transmissions and establish the authenticity of a message.

authentication

(security)
The verification of the identity of a person or process. In a communication system, authentication verifies that messages really come from their stated source, like the signature on a (paper) letter. The most common form of authentication is typing a user name (which may be widely known or easily guessable) and a corresponding password that is presumed to be known only to the individual being authenticated. Another form of authentication is biometrics.

authentication

(1) Verifying the integrity of a transmitted message. See message integrity, e-mail authentication and MAC.

(2) Verifying the identity of a user logging into a network. Passwords, digital certificates, smart cards and biometrics can be used to prove the identity of the client to the network. Passwords and digital certificates can also be used to identify the network to the client. The latter is important in wireless networks to ensure that the desired network is being accessed. See identity management, identity metasystem, OpenID, human authentication, challenge/response, two-factor authentication, password, digital signature, IP spoofing, biometrics and CAPTCHA.

Four Levels of Proof


There are four levels of proof that people are indeed who they say they are. None of them are entirely foolproof, but in order of least to most secure, they are:

1 - What You Know
Passwords are widely used to identify a user, but only verify that somebody knows the password.

2 - What You Have
Digital certificates in the user's computer add more security than a password, and smart cards verify that users have a physical token in their possession, but both laptops and smart cards can be stolen.

3 - What You Are
Biometrics such as fingerprints and iris recognition are more difficult to forge, but you have seen such systems fooled in the movies all the time!

4 - What You Do
Dynamic biometrics such as hand writing a signature and voice recognition are the most secure; however, replay attacks can fool the system.
References in periodicals archive ?
Most banks will insist on an authenticated copy of your passport and proof of economic background, including the last two bank statements and latest tax return, a letter from your employer, a copy of your most recent utility bill as current residence proof and a reference from your current bank.
They can approach General Directorate of Naturalisation and Residency to get an authenticated copy of their family book which will be accepted by EIDA for registration," said the official.
Individuals: authenticated copy of ID and Individual Tax Registration cards.