block cipher


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block cipher

[′bläk ‚sī·fər]
(communications)
A cipher that transforms a string of input bits of fixed length into a string of output bits of fixed length.

block cipher

An encryption method that processes the input stream as groups of bytes that are fixed in size, typically 64, 128 or 256 bits long. The state of a block cipher is reset before processing each block. The DES and AES algorithms are examples of block ciphers (see DES and AES). Contrast with stream cipher.
References in periodicals archive ?
Skodras, "An FPGA implementation and performance evaluation of the seed block cipher," in Proceedings of the 2011 17th International Conference on Digital Signal Processing (DSP), pp.
In the Simeck family block cipher key schedule, Figure 2 shows the Simeck family block cipher key schedule as a block diagram.
HIGHT is a lightweight block cipher with 64-bit block length and 128-bit key length.
The combination of cluster key and fault diagnosis routing with block cipher based encryption scheme ensures complete security, which means that the cluster member private key does not reveal the signer's identity but everyone can verify its validity.
Aref, "Biclique Cryptanalysis of the Full-Round KLEIN Block Cipher," Iet Information Security, Vol.
Shah, "A construction of novel chaos base nonlinear component of block cipher," Nonlinear Dynamics, vol.
Key schedule algorithm is an important part of any block cipher algorithm and its strength directly affects the security of the cipher.
recommendation for the triple data encryption algorithm (tdea) block cipher. 2012.
The suggested method basically adopted a 128-bit block cipher. Of course, since a low-powered PHD, or biosensor, has a limitation in computation capability or memory, depending on application, it may use an encrypted algorithm which is less than 128 bits.
There are many disadvantages of block cipher such as it is easy to insert or delete blocks.
proposed a symmetric key block cipher algorithm which includes a step that simulates ideas from the processes of transcription (transfer from DNA to mRNA) and translation (from mRNA into amino acids) [13].
[35] National Institute of Standards Technology, "NIST Special Publication 800-38A: Recommendation for Block Cipher Modes of Operation--Methods and Techniques," December 2001.