Handbook of Applied Cryptography
Handbook of Applied Cryptography
Security of E2 against Truncated Differential Cryptanalysis
SAC '99 Proceedings of the 6th Annual International Workshop on Selected Areas in Cryptography
Differential Cryptanalysis of DES-like Cryptosystems
CRYPTO '90 Proceedings of the 10th Annual International Cryptology Conference on Advances in Cryptology
Truncated Differentials of SAFER
Proceedings of the Third International Workshop on Fast Software Encryption
Security of Camellia against Truncated Differential Cryptanalysis
FSE '01 Revised Papers from the 8th International Workshop on Fast Software Encryption
Improved Upper Bounds of Differential and Linear Characteristic Probability for Camellia
FSE '02 Revised Papers from the 9th International Workshop on Fast Software Encryption
On the Security of CAMELLIA against the Square Attack
FSE '02 Revised Papers from the 9th International Workshop on Fast Software Encryption
Impossible differential cryptanalysis on feistel ciphers with SP and SPS round functions
ACNS'10 Proceedings of the 8th international conference on Applied cryptography and network security
New impossible differential attacks of reduced-round Camellia-192 and Camellia-256
ACISP'11 Proceedings of the 16th Australasian conference on Information security and privacy
Collision attack and pseudorandomness of reduced-round camellia
SAC'04 Proceedings of the 11th international conference on Selected Areas in Cryptography
Improved collision attack on reduced round camellia
CANS'06 Proceedings of the 5th international conference on Cryptology and Network Security
SAC'05 Proceedings of the 12th international conference on Selected Areas in Cryptography
New impossible differential cryptanalysis of reduced-round camellia
CANS'11 Proceedings of the 10th international conference on Cryptology and Network Security
New impossible differential attacks on camellia
ISPEC'12 Proceedings of the 8th international conference on Information Security Practice and Experience
Improved results on impossible differential cryptanalysis of reduced-round Camellia-192/256
Journal of Systems and Software
Low data complexity attack on reduced camellia-256
ACISP'12 Proceedings of the 17th Australasian conference on Information Security and Privacy
New observations on impossible differential cryptanalysis of reduced-round camellia
FSE'12 Proceedings of the 19th international conference on Fast Software Encryption
| Hi-index | 0.00 |
This paper describes truncated and impossible differential cryptanalysis of the 128-bit block cipher Camellia, which was proposed by NTT and Mitsubishi Electric Corporation. Our work improves on the best known truncated and impossible differential cryptanalysis. As a result, we show a nontrivial 9-round byte characteristic, which may lead to a possible attack of reduced-round version of Camellia without input/output whitening, FL or FL-1 in a chosen plain text scenario. Previously, only 6-round differentials were known, which may suggest a possible attack of Camellia reduced to 8-rounds. Moreover, we show a nontrivial 7-round impossible differential, whereas only a 5-round impossible differential was previously known. This cryptanalysis is effective against general Feistel structures with round functions composed of S-D (Substitution and Diffusion) transformation.