challenge and password

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• Challenge-response authentication — For the spam filtering technique, see Challenge response spam filtering. For other uses, see CRAM (disambiguation). In computer security, challenge response authentication is a family of protocols in which one party presents a question (… …   Wikipedia

• Password — For other uses, see Password (disambiguation). A password is a secret word or string of characters that is used for authentication, to prove identity or gain access to a resource (example: an access code is a type of password). The password… …   Wikipedia

• Challenge-Handshake Authentication Protocol — In computing, the Challenge Handshake Authentication Protocol (CHAP) authenticates a user or network host to an authenticating entity. That entity may be, for example, an Internet service provider. CHAP is specified in RFC 1994. CHAP provides… …   Wikipedia

• Password authentication protocol — A password authentication protocol (PAP) is an authentication protocol that uses a password. PAP is used by Point to Point Protocol to validate users before allowing them access to server resources. Almost all network operating system remote… …   Wikipedia

• Password Authentication Protocol —    Abbreviated PAP. A security protocol that requires a user to enter a user name and password before gaining access to a secure server.    See also Challenge Handshake Authentication Protocol …   Dictionary of networking

• Password cracking — is the process of recovering passwords from data that has been stored in or transmitted by a computer system. A common approach is to repeatedly try guesses for the password. The purpose of password cracking might be to help a user recover a… …   Wikipedia

• Challenge (TV channel) — Challenge Launched 1 September 1993 (1993 09 01) Owned by British Sky Broadcasting Picture format 16:9, 576i …   Wikipedia

• Password-based cryptography — generally refers to two distinct classes of methods:*Single party methods *Multi party methodsingle party methodsSome systems attempt to derive a cryptographic key directly from a password. However, such practice is generally ill advised when… …   Wikipedia

• Challenge-handshake authentication protocol — In computing, the Challenge Handshake Authentication Protocol (CHAP) authenticates a user or network host to an authenticating entity. That entity may be, for example, an Internet access provider. RFC 1994: PPP Challenge Handshake Authentication… …   Wikipedia

• challenge — /ˈtʃæləndʒ / (say chaluhnj) noun 1. a call to engage in a contest of skill, strength, etc. 2. a call to fight, as a duel, etc. 3. something that makes demands upon one s abilities, endurance, etc.: *Learning to shoot was a challenge I met and a… …  

• password encryption —    In certain operating systems, the password you enter to gain access to the system is not stored as ordinary text, but is encrypted, and this encrypted form is compared against the encrypted password stored on the server. If the two match, the… …   Dictionary of networking