Cisco Open Sources Experimental Small Domain Block Cipher
Jun 23, 2014
In cryptography, Block ciphers such as AES or DES are a symmetric key cipher operating on fixed-length groups of bits, called blocks, and typically operate on large input data blocks i.e. 64 or more than 128, 256 bits. Block cipher encrypts Plain-text to Cipher-text by applying cryptographic key and algorithm to a block of data at once as a group rather than to one bit at a time, so that identical blocks of text do not get encrypted the same way. However, some applications need smaller blocks, and possibly non-binary blocks. So, to fulfil this need Cisco is providing a small block cipher , what it calls “FNR” (Flexible Naor and Reingold), but currently it is an experimental block cipher rather a production software. Sashank Dara , software engineer at the security technology group Cisco , says in a detailed explanation that FNR is a flexible length small domain block cipher for encrypting objects that works without the need for padding, as happens in the traditi...
