message authentication block

См. также в других словарях:

• Message authentication code — In cryptography, a message authentication code (often MAC) is a short piece of information used to authenticate a message. A MAC algorithm, sometimes called a keyed (cryptographic) hash function, accepts as input a secret key and an arbitrary… …   Wikipedia

• Block cipher modes of operation — This article is about cryptography. For method of operating , see modus operandi. In cryptography, modes of operation is the procedure of enabling the repeated and secure use of a block cipher under a single key.[1][2] A block cipher by itself… …   Wikipedia

• Block cipher — In cryptography, a block cipher is a symmetric key cipher operating on fixed length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take (for example) a 128 bit block of plaintext as… …   Wikipedia

• Chip Authentication Program — A GemAlto EZIO CAP Device Whitelabeled as Barclays PINSentry The Chip Authentication Program (CAP) is a MasterCard initiative and technical specification for using EMV banking smartcards for authenticating users and transactions in online and… …   Wikipedia

• Data Authentication Algorithm — The Data Authentication Algorithm (DAA) is a former U.S. government standard for producing cryptographic message authentication codes. According to the standard, a code produced by the DAA is called a Data Authentication Code (DAC). The algorithm …   Wikipedia

• Cipher Block Chaining — Mode (CBC) ist eine Betriebsart, in der Blockchiffren betrieben werden können. Vor dem Verschlüsseln eines Klartextblocks wird dieser zunächst mit dem im letzten Schritt erzeugten Geheimtextblock per XOR (exklusives Oder) verknüpft.… …   Deutsch Wikipedia

• Cryptographic Message Syntax — The Cryptographic Message Syntax (CMS) is the IETF s standard for cryptographically protected messages. It can be used to digitally sign, digest, authenticate or encrypt any form of digital data. CMS is based on the syntax of PKCS#7, which in… …   Wikipedia

• Server Message Block — In computer networking, Server Message Block (SMB), also known as Common Internet File System (CIFS, /ˈsɪfs …   Wikipedia

• E-mail authentication — is the effort to equip messages of the e mail transport system with enough verifiable information, so that recipients can recognize the nature of each incoming message automatically. It is different from content filtering s fuzzy methods.… …   Wikipedia

• Integrated Windows Authentication — (IWA) is a term associated with Microsoft products that refers to the SPNEGO, Kerberos, and NTLMSSP authentication protocols with respect to SSPI functionality introduced with Microsoft Windows 2000 and included with later Windows NT based… …   Wikipedia

• Cryptographic hash function — A cryptographic hash function (specifically, SHA 1) at work. Note that even small changes in the source input (here in the word over ) drastically change the resulting output, by the so called avalanche effect. A cryptographic hash function is a… …   Wikipedia