Authentication — (from Greek αυθεντικός; real or genuine, from authentes; author) is the act of establishing or confirming something (or someone) as authentic , that is, that claims made by or about the thing are true. This might involve confirming the identity… … Wikipedia
Key (cryptography) — In cryptography, a key is a piece of information (a parameter) that determines the functional output of a cryptographic algorithm or cipher. Without a key, the algorithm would produce no useful result. In encryption, a key specifies the… … Wikipedia
Key authentication — is a problem that arises when using public key cryptography. It is the process of assuring that the public key of person A held by person B does in fact belong to person A .In traditional symmetric key cryptography, this problem wasn t an issue… … Wikipedia
Key exchange — is any method in cryptography by which cryptographic keys are exchanged between users, allowing use of a cryptographic algorithm. If Alice and Bob wish to exchange encrypted messages, each must be equipped to decrypt received messages and to… … Wikipedia
Authentication server — Authentication servers are servers that provide authentication services to users or other systems. Users and other servers authenticate to such a server, and receive cryptographic tickets. These tickets are then exchanged with one another to… … Wikipedia
Authentication Header — IPsec im TCP/IP‑Protokollstapel: Anwendung HTTP IMAP SMTP DNS … Transport TCP UDP … Deutsch Wikipedia
Key fob — A key fob is a generally decorative and at times useful item many people often carry with their keys, on a ring or a chain, for ease of tactile identification, to provide a better grip, or to make a personal statement. Key fobs are often called… … Wikipedia
Extensible Authentication Protocol — Extensible Authentication Protocol, or EAP, is a universal authentication framework frequently used in wireless networks and Point to Point connections. It is defined in RFC 3748, which has been updated by RFC 5247. Although the EAP protocol is… … Wikipedia
Public key infrastructure — In cryptography, a public key infrastructure (PKI) is an arrangement that binds public keys with respective user identities by means of a certificate authority (CA). The user identity must be unique for each CA. The binding is established through … Wikipedia
Public-key cryptography — In an asymmetric key encryption scheme, anyone can encrypt messages using the public key, but only the holder of the paired private key can decrypt. Security depends on the secrecy of that private key … Wikipedia
Public key fingerprint — In public key cryptography, a public key fingerprint is a short sequence of bytes used to authenticate or look up a longer public key. Fingerprints are created by applying a cryptographic hash function to a public key. Since fingerprints are… … Wikipedia
