Eterlogic

In cryptography, CAST-256 (or CAST6) is a block cipher published in June 1998. It was submitted as a candidate for the Advanced Encryption Standard (AES); however, it wasnot among the five AES finalists. It is an extension of an earlier cipher, CAST-128; both were designed according to the "CAST" design methodology invented by Carlisle Adams and StaffordTavares. Howard Heys and Michael Wiener also contributed to the design.CAST-256 uses the same elements as CAST-128, including S-boxes, but is adapted for a block size of 128 bits - twice thesize of its 64-bit predecessor. (A similar construction occurred in the evolution of RC5 into RC6). Acceptable key sizes are 128, 160, 192, 224 or 256 bits. CAST-256 is composed of 48 rounds,sometimes described as 12 "quad-rounds", arranged in a generalised Feistel network.In RFC 2612, the authors state that, "The CAST-256 cipher described in this document is available worldwide on a royalty-free and licence-free basis for commercial and non-commercial uses." (http://www.wikipedia.org)

In cryptography, Twofish is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits. It was one of the five finalists of the Advanced Encryption Standard contest, but was not selected for standardisation. Twofish is related to the earlier block cipher Blowfish. Twofish's distinctive features are the use of pre-computed key-dependent S-boxes, and a relatively complex key schedule. One half of an n-bit key is used as the actual encryption key and the other half of the n-bit key is used to modify the encryption algorithm (key-dependent S-boxes). Twofish borrows some elements from other designs; for example, the pseudo-Hadamard transform (PHT) from the SAFER family of ciphers. Twofish uses the same Feistel structure as DES. On most software platforms Twofish is slightly slower than Rijndael (the chosen algorithm for Advanced Encryption Standard) for 128-bit keys, but somewhat faster for 256-bit keys. Twofish was designed by Bruce Schneier, John Kelsey, Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson; the "extended Twofish team" who met to perform further cryptanalysis of Twofish and other AES contest entrants included Stefan Lucks, Tadayoshi Kohno, and Mike Stay. (http://www.wikipedia.org)

In computing, a serial port is a serial communication physical interface through which information transfers in or out one bit at a time (contrast parallel port). Throughout most of the history of personal computers, data transfer through serial ports connected the computer to devices such as terminals and various peripherals. (http://www.wikipedia.org)

Is a term used with respect to computers when a drive is emulated in some fashion. The drive being emulated could be a hard drive, floppy drive, CD/DVD or a network share among others.A virtual hard drive can be created from RAM for fast read/write access. See: RAM disk. As well, there is software that makes one's Gmail account act as a virtual external drive. (http://www.wikipedia.org)