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BSI BS ISO/IEC 18033-3:2010+A1:2021

Information technology. Security techniques. Encryption algorithms -- Block ciphers
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BSI BS ISO/IEC 18033-3:2010+A1:2021

Information technology. Security techniques. Encryption algorithms -- Block ciphers

PUBLISH DATE 2021
PAGES 90
BSI BS ISO/IEC 18033-3:2010+A1:2021

This part of ISO/IEC 18033 specifies block ciphers. A block cipher maps blocks of n bits to blocks of n bits, under the control of a key of k bits.

A total of eight different block ciphers are defined. They are categorized in Table 1.

Table 1 Block ciphers specified

Block length Algorithm name (see #) Key length
64 bits TDEA (4.2) 128 or 192 bits
MISTY (4.3) 128 bits
CAST-128 (4.4)
HIGHT (4.5)
128 bits AES (5.2) 128, 192 or 256 bits
Camellia (5.3)
SEED (5.4) 128 bits
SM4 (5.5)

The algorithms specified in this part of ISO/IEC 18033 have been assigned object identifiers in accordance with ISO/IEC 9834.

The list of assigned object identifiers is given in Annex B. Any changes to the specification of the algorithms resulting in a change of functional behaviour will result in a change of the object identifier assigned to the algorithm.

SDO BSI: British Standards Institution
Document Number ISO/IEC 18033-3
Publication Date July 7, 2021
Language en - English
Page Count
Revision Level 1
Supercedes
Committee IST/33/2
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