• September 21, 2005 21 Sep'05

    ciphertext feedback (CFB)

    Ciphertext feedback (CFB) is a mode of operation for a block cipher. In contrast to the cipher block chaining (CBC) mode, which encrypts a set number of bits of plaintext at a time, it is at times desirable to encrypt and transfer some plaintext ...  Continue Reading

  • September 21, 2005 21 Sep'05

    output feedback (OFB)

    In cryptography, output feedback (OFB) is a mode of operation for a block cipher.  Continue Reading

  • September 21, 2005 21 Sep'05

    MD2

    MD2 is an earlier, 8-bit version of MD5, an algorithm used to verify data integrity through the creation of a 128-bit message digest from data input (which may be a message of any length) that is claimed to be as unique to that specific data as a ...  Continue Reading

  • September 21, 2005 21 Sep'05

    MD4

    MD4 is an earlier version of MD5, an algorithm used to verify data integrity through the creation of a 128-bit message digest from data input (which may be a message of any length) that is claimed to be as unique to that specific data as a ...  Continue Reading

  • September 21, 2005 21 Sep'05

    decipher

    All three terms - decipher, decrypt, and decode - mean to convert ciphertext into the original, unencrypted plaintext.  Continue Reading

  • September 21, 2005 21 Sep'05

    server accelerator card (SSL card)

    A server accelerator card (also known as an SSL card) is a Peripheral Component Interconnect (PCI) card used to generate encryption keys for secure transactions on e-commerce Web sites.  Continue Reading

  • September 21, 2005 21 Sep'05

    Electronic Code Book (ECB)

    Electronic Code Book (ECB) is a mode of operation for a block cipher, with the characteristic that each possible block of plaintext has a defined corresponding ciphertext value and vice versa.  Continue Reading

  • September 21, 2005 21 Sep'05

    bogie (bogey)

    The term bogie, also spelled bogey, refers to a false blip on a radar display.  Continue Reading

  • September 21, 2005 21 Sep'05

    crypto

    Depending on its usage, crypto can be a short form for cryptography or for encryption.  Continue Reading

  • September 21, 2005 21 Sep'05

    conditional access (CA)

    Conditional access (CA) is a technology used to control access to digital television (DTV) services to authorized users by encrypting the transmitted programming.  Continue Reading

  • September 21, 2005 21 Sep'05

    stream cipher

    A stream cipher is a method of encrypting text (to produce ciphertext) in which a cryptographic key and algorithm are applied to each binary digit in a data stream, one bit at a time.  Continue Reading

  • September 21, 2005 21 Sep'05

    secret key algorithm (symmetric algorithm)

    A secret key algorithm (sometimes called a symmetric algorithm) is a cryptographic algorithm that uses the same key to encrypt and decrypt data.  Continue Reading

  • September 21, 2005 21 Sep'05

    Automated Clearing House (ACH)

    Automated Clearing House (ACH) is a secure payment transfer system that connects all U.S. financial institutions.  Continue Reading

  • September 21, 2005 21 Sep'05

    Electronic Signatures in Global and National Commerce Act (e-signature bill)

    The Electronic Signatures in Global and National Commerce Act (often referred to as the e-signature bill) specifies that in the United States, the use of a digital signature is as legally valid as a traditional signature written in ink on paper.  Continue Reading

  • September 21, 2005 21 Sep'05

    set

    A set is a group or collection of objects or numbers, considered as an entity unto itself. SET is also an acronym for Secure Electronic Transaction.  Continue Reading

  • September 21, 2005 21 Sep'05

    quantum cryptography

    Quantum cryptography uses our current knowledge of physics to develop a cryptosystem that is not able to be defeated - that is, one that is completely secure against being compromised without knowledge of the sender or the receiver of the messages.  Continue Reading

  • September 21, 2005 21 Sep'05

    journaling file system

    A journaling file system is a fault-resilient file system in which data integrity is ensured because updates to directories and bitmaps are constantly written to a serial log on disk before the original disk log is updated.  Continue Reading

  • September 21, 2005 21 Sep'05

    key

    In cryptography, a key is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text, or to decrypt encrypted text.  Continue Reading

  • September 21, 2005 21 Sep'05

    security identifier (SID)

    In Windows NT and 2000 operating systems, the security identifier (SID) is a unique alphanumeric character string that identifies each operating system and each user in a network of NT/2000 systems.  Continue Reading

  • September 21, 2005 21 Sep'05

    executable

    In computers, to execute a program is to run the program in the computer, and, by implication, to start it to run.  Continue Reading

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