Search results
Results from the WOW.Com Content Network
In cryptography, Triple DES (3DES or TDES), officially the Triple Data Encryption Algorithm (TDEA or Triple DEA), is a symmetric-key block cipher, which applies the DES cipher algorithm three times to each data block. The 56-bit key of the Data Encryption Standard (DES) is no longer considered adequate in the face of modern cryptanalytic ...
The Data Encryption Standard (DES / ˌ d iː ˌ iː ˈ ɛ s, d ɛ z /) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for modern applications, it has been highly influential in the advancement of cryptography .
In cryptography, the EFF DES cracker (nicknamed "Deep Crack") is a machine built by the Electronic Frontier Foundation (EFF) in 1998, to perform a brute force search of the Data Encryption Standard (DES) cipher's key space – that is, to decrypt an encrypted message by trying every possible key.
The original MITM attack was first suggested in an article by Diffie and Hellman in 1977, where they discussed the cryptanalytic properties of DES. [1] They argued that the keysize of DES was too small, and that reapplying DES multiple times with different keys could be a solution to the key-size; however, they advised against using double-DES and suggested triple-DES as a minimum, due to MITM ...
The International Data Encryption Algorithm (IDEA) is a block cipher designed by James Massey of ETH Zurich and Xuejia Lai; it was first described in 1991, as an intended replacement for DES. IDEA operates on 64-bit blocks using a 128-bit key and consists of a series of eight identical transformations (a round ) and an output transformation ...
For premium support please call: 800-290-4726 more ways to reach us
An attacker can use a MITM attack to bruteforce Double DES with 2 57 operations and 2 56 space, making it only a small improvement over DES. [5] Triple DES uses a "triple length" (168-bit) key and is also vulnerable to a meet-in-the-middle attack in 2 56 space and 2 112 operations, but is considered secure due to the size of its keyspace. [2] [6]
However, after design, a new attack might be discovered. For instance, Triple DES was designed to have a 168-bit key, but an attack of complexity 2 112 is now known (i.e. Triple DES now only has 112 bits of security, and of the 168 bits in the key the attack has rendered 56 'ineffective' towards security). Nevertheless, as long as the security ...