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  2. SGS S.A. - Wikipedia

    en.wikipedia.org/wiki/SGS_S.A.

    99,600 (2023) [1] Website. www.sgs.com. SGS (formerly Société Générale de Surveillance (French for General Society of Surveillance )) is a Swiss multinational company headquartered in Geneva, which provides inspection, verification, testing and certification services. Its 99,600 employees operate a network of 2,600 offices and laboratories ...

  3. Message authentication code - Wikipedia

    en.wikipedia.org/wiki/Message_authentication_code

    Message authentication code. In cryptography, a message authentication code ( MAC ), sometimes known as an authentication tag, is a short piece of information used for authenticating and integrity -checking a message. In other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed (its integrity).

  4. Knowledge-based authentication - Wikipedia

    en.wikipedia.org/wiki/Knowledge-based_authentication

    Knowledge-based authentication, commonly referred to as KBA, is a method of authentication which seeks to prove the identity of someone accessing a service such as a financial institution or website. As the name suggests, KBA requires the knowledge of private information from the individual to prove that the person providing the identity ...

  5. Mutual authentication - Wikipedia

    en.wikipedia.org/wiki/Mutual_authentication

    Mutual authentication or two-way authentication (not to be confused with two-factor authentication) refers to two parties authenticating each other at the same time in an authentication protocol. It is a default mode of authentication in some protocols ( IKE, SSH) and optional in others ( TLS ). Mutual authentication is a desired characteristic ...

  6. Message authentication - Wikipedia

    en.wikipedia.org/wiki/Message_authentication

    Description. Message authentication or data origin authentication is an information security property that indicates that a message has not been modified while in transit ( data integrity) and that the receiving party can verify the source of the message. [1] Message authentication does not necessarily include the property of non-repudiation.

  7. Single sign-on - Wikipedia

    en.wikipedia.org/wiki/Single_sign-on

    Single sign-on. Single sign-on ( SSO) is an authentication scheme that allows a user to log in with a single ID to any of several related, yet independent, software systems. True single sign-on allows the user to log in once and access services without re-entering authentication factors. It should not be confused with same-sign on (Directory ...

  8. Authenticated encryption - Wikipedia

    en.wikipedia.org/wiki/Authenticated_encryption

    Authenticated Encryption (AE) is an encryption scheme which simultaneously assures the data confidentiality (also known as privacy: the encrypted message is impossible to understand without the knowledge of a secret key [1]) and authenticity (in other words, it is unforgeable: [2] the encrypted message includes an authentication tag that the ...

  9. Multi-factor authentication - Wikipedia

    en.wikipedia.org/wiki/Multi-factor_authentication

    Multi-factor authentication ( MFA; two-factor authentication, or 2FA, along with similar terms) is an electronic authentication method in which a user is granted access to a website or application only after successfully presenting two or more pieces of evidence (or factors) to an authentication mechanism.