CLEFIA is a proprietary
block cipher
In cryptography, a block cipher is a deterministic algorithm operating on fixed-length groups of bits, called ''blocks''. Block ciphers are specified cryptographic primitive, elementary components in the design of many cryptographic protocols and ...
algorithm, developed by
Sony
, commonly stylized as SONY, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. As a major technology company, it operates as one of the world's largest manufacturers of consumer and professional ...
.
Its name is derived from the French word ''clef'', meaning "key". The block size is 128 bits and the key size can be 128 bit, 192 bit or 256 bit. It is intended to be used in
DRM
DRM may refer to:
Government, military and politics
* Defense reform movement, U.S. campaign inspired by Col. John Boyd
* Democratic Republic of Madagascar, a former socialist state (1975–1992) on Madagascar
* Direction du renseignement militai ...
systems. It is among the cryptographic techniques recommended candidate for Japanese government use by CRYPTREC revision in 2013.
Standardization
CLEFIA is included in the following standards.
* ISO/IEC 29192-2:2019, ''Information security - Lightweight cryptography - Part 2: Block ciphers''
References
Further reading
*
*
External links
CLEFIA website*
ttps://web.archive.org/web/20070329191157/http://www.efytimes.com/efytimes/fullnews.asp?edid=18015 Sony Introduces CLEFIAImplementation of 128-bit CLEFIA codec and hash function
Block ciphers
Digital rights management systems
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