secret-key cryptographic system
11S/KEY — is a one time password system developed for authentication to Unix like operating systems, especially from dumb terminals or untrusted public computers on which one does not want to type a long term password. A user s real password is combined in …
12Diffie–Hellman key exchange — (D–H)[nb 1] is a specific method of exchanging keys. It is one of the earliest practical examples of key exchange implemented within the field of cryptography. The Diffie–Hellman key exchange method allows two parties that have no prior knowledge …
13Derived unique key per transaction — In cryptography, Derived Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key. Therefore, if a derived key is compromised, future and past transaction …
14Diffie-Hellman key exchange — (D H) is a cryptographic protocol that allows two parties that have no prior knowledge of each other to jointly establish a shared secret key over an insecure communications channel. This key can then be used to encrypt subsequent communications… …
15Pre-shared key — In cryptography, a pre shared key or PSK is a shared secret which was previously shared between the two parties using some secure channel before it needs to be used. Such systems almost always use symmetric key cryptographic algorithms. The… …
16Session key — A session key is a single use symmetric key used for encrypting all messages in one communication session. A closely related term is traffic encryption key or TEK, which refers to any key used to encrypt messages as opposed to different uses,… …
17Public 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 …
18Public key system — An ISO term. A cryptographic method using pairs of cryptographic keys, one of which is secret and one is public. If encipherment is done using the public key, decipherment requires application of the corresponding secret key and vice versa …
19Encrypting File System — The Encrypting File System (EFS) on Microsoft Windows is a feature introduced in version 3.0 of NTFS[1] that provides filesystem level encryption. The technology enables files to be transparently encrypted to protect confidential data from… …
20Glossary of cryptographic key types — This glossary lists types of keys as the term is used in cryptography, as opposed to door locks. Terms that are primarily used by the U.S. National Security Agency are marked (NSA). For classification of keys according to their usage see… …
