BaseKing
Encyclopedia
In cryptography
, BaseKing is a block cipher
designed in 1994 by Joan Daemen
. It is very closely related to 3-Way
; indeed, the two are variants of the same general cipher technique.
BaseKing has a block size
of 192 bits–twice as long as 3-Way, and notably not a power of two as with most block ciphers. The key length is also 192 bits. BaseKing is an 11-round substitution-permutation network
.
In Daemen's doctoral dissertation he presented an extensive theory of block cipher design, as well as a rather general cipher algorithm composed of a number of invertible transformations that may be chosen with considerable freedom. He discussed the security of this general scheme against known cryptanalytic attacks
, and gave two specific examples of ciphers consisting of particular choices for the variable parameters. These ciphers are 3-Way and BaseKing.
BaseKing is susceptible to the same kind of related-key attack
as 3-Way. Daemaen, Peeters, and Van Assche have also demonstrated potential vulnerabilities to differential power analysis, along with some techniques to increase the resistance of a given implementation of BaseKing to such an attack.
Cryptography
Cryptography is the practice and study of techniques for secure communication in the presence of third parties...
, BaseKing is a block cipher
Block cipher
In cryptography, a block cipher is a symmetric key cipher operating on fixed-length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take a 128-bit block of plaintext as input, and output a corresponding 128-bit block of ciphertext...
designed in 1994 by Joan Daemen
Joan Daemen
Joan Daemen |Limburg]], Belgium) is a Belgian cryptographer and one of the designers of Rijndael, the Advanced Encryption Standard , together with Vincent Rijmen. He has also designed or co-designed the MMB, Square, SHARK, NOEKEON, 3-Way, and BaseKing block ciphers...
. It is very closely related to 3-Way
3-Way
In cryptography, 3-Way is a block cipher designed in 1994 by Joan Daemen, who also designed Rijndael, the winner of NIST's Advanced Encryption Standard contest....
; indeed, the two are variants of the same general cipher technique.
BaseKing has a block size
Block size (cryptography)
In modern cryptography, symmetric key ciphers are generally divided into stream ciphers and block ciphers. Block ciphers operate on a fixed length string of bits. The length of this bit string is the block size...
of 192 bits–twice as long as 3-Way, and notably not a power of two as with most block ciphers. The key length is also 192 bits. BaseKing is an 11-round substitution-permutation network
Substitution-permutation network
In cryptography, an SP-network, or substitution-permutation network , is a series of linked mathematical operations used in block cipher algorithms such as AES .Other ciphers that use SPNs are 3-Way, SAFER, SHARK, and Square....
.
In Daemen's doctoral dissertation he presented an extensive theory of block cipher design, as well as a rather general cipher algorithm composed of a number of invertible transformations that may be chosen with considerable freedom. He discussed the security of this general scheme against known cryptanalytic attacks
Cryptanalysis
Cryptanalysis is the study of methods for obtaining the meaning of encrypted information, without access to the secret information that is normally required to do so. Typically, this involves knowing how the system works and finding a secret key...
, and gave two specific examples of ciphers consisting of particular choices for the variable parameters. These ciphers are 3-Way and BaseKing.
BaseKing is susceptible to the same kind of related-key attack
Related-key attack
In cryptography, a related-key attack is any form of cryptanalysis where the attacker can observe the operation of a cipher under several different keys whose values are initially unknown, but where some mathematical relationship connecting the keys is known to the attacker...
as 3-Way. Daemaen, Peeters, and Van Assche have also demonstrated potential vulnerabilities to differential power analysis, along with some techniques to increase the resistance of a given implementation of BaseKing to such an attack.