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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).
In information security, message authentication or data origin authentication is a property that a message has not been modified while in transit (data integrity) and that the receiving party can verify the source of the message.
Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and how to turn off 2-step verification if you need to.
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.
Each authentication factor covers a range of elements used to authenticate or verify a person's identity before being granted access, approving a transaction request, signing a document or other work product, granting authority to others, and establishing a chain of authority.
Mutual authentication is a desired characteristic in verification schemes that transmit sensitive data, in order to ensure data security. [1] [2] Mutual authentication can be accomplished with two types of credentials: usernames and passwords, and public key certificates .
Electronic authentication is the process of establishing confidence in user identities electronically presented to an information system. [1] Digital authentication, or e-authentication, may be used synonymously when referring to the authentication process that confirms or certifies a person's identity and works.
Delegated authentication to WS-FED, Facebook, Twitter, SAML IdP, OpenID, OpenID Connect, CAS and more. Authorization via ABAC, Time/Date, REST, Internet2's Grouper and more. HA clustered deployments via Hazelcast , Ehcache , JPA, Memcached , Apache Ignite , MongoDB, Redis , Couchbase and more.
Encryption. Input: plaintext, key, and optionally a header (also known as additional authenticated data, AAD, or associated data, AD) in plaintext that will not be encrypted, but will be covered by authenticity protection. Output: ciphertext and authentication tag ( message authentication code or MAC). Decryption.
Password-authenticated key agreement generally encompasses methods such as: Balanced password-authenticated key exchange. Augmented password-authenticated key exchange. Password-authenticated key retrieval. Multi-server methods. Multi-party methods. In the most stringent password-only security models, there is no requirement for the user of the ...