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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.
Serge Alexandre Massar (born 11 February 1970) is a Belgian physicist. He studies quantum information theory, nonlinear optics, optical neural networks, and reservoir computing.
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 ).
Hardware authentication security keys. 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.
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).
Email authentication, or validation, is a collection of techniques aimed at providing verifiable information about the origin of email messages by validating the domain ownership of any message transfer agents (MTA) who participated in transferring and possibly modifying a message.
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) and authenticity (in other words, it is unforgeable: the encrypted message includes an authentication tag that the sender can ...
A transaction authentication number (TAN) is used by some online banking services as a form of single use one-time passwords (OTPs) to authorize financial transactions. TANs are a second layer of security above and beyond the traditional single-password authentication.
Message authentication is typically achieved by using message authentication codes (MACs), authenticated encryption (AE), or digital signatures. The message authentication code, also known as digital authenticator, is used as an integrity check based on a secret key shared by two parties to authenticate information transmitted between them. [4]
Third-party grading (TPG) refers to coin grading & banknote grading authentication, attribution, and encapsulation by independent certification services. These services will, for a tiered fee depending on the value of the coin, "slab" a coin and assign a grade of 1-70 on the Sheldon grading system, with 1 being the lowest grade, with only faint ...