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Thursday, January 26, 2012
Sony's CLEFIA Encryption Technology Adopted as an
International Standard
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Sony's 'CLEFIA,' cryptography technique was adopted as
one of the ISO/IEC 29192 International Standards in
lightweight cryptography.
CLEFIA is a lightweight cryptography technology
suitable securing the network communications of
low-power devices or those with limited hardware or
memory. CLEFIA has the same interface as the US
government's Advanced Encryption Standard (AES). This
block cipher has a block length of 128 bits, while key
length can be selected from 128 bits, 192 bits or 256
bits. The most impressive feature of CLEFIA is its
realization of implementation efficiency while
maintaining a high level of security. The development
of CLEFIA maintains superior security based on the
latest block cipher design theory. Furthermore, CLEFIA
adopts the general Feistel structure, which is suited
for implementation in constrained environments. Also,
the 'Diffusion Switching Mechanism' (DSM) is employed
to reduce processing operations whilst ensuring
security. In addition, components for data processing
and key scheduling part are shared.
CLEFIA is suited for lightweight cryptographic
applications as indicated in ISO/IEC 29192 in
smartcards, RFID tags, sensor networks, medical
devices and more, in addition to conventional
applications.
Having been recognized as an ISO/IEC International
Standard on this occasion, Sony will strive to expand
the application of CLEFIA in a variety of devices and
services. |
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