A proposal for a new block encryption standard
EUROCRYPT '90 Proceedings of the workshop on the theory and application of cryptographic techniques on Advances in cryptology
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
On the security of the IDEA block cipher
EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
PGP: Pretty Good Privacy
ICICS '02 Proceedings of the 4th International Conference on Information and Communications Security
Square-like Attacks on Reduced Rounds of IDEA
SAC '02 Revised Papers from the 9th Annual International Workshop on Selected Areas in Cryptography
The First Experimental Cryptanalysis of the Data Encryption Standard
CRYPTO '94 Proceedings of the 14th Annual International Cryptology Conference on Advances in Cryptology
Miss in the Middle Attacks on IDEA and Khufu
FSE '99 Proceedings of the 6th International Workshop on Fast Software Encryption
A Chosen-Plaintext Linear Attack on DES
FSE '00 Proceedings of the 7th International Workshop on Fast Software Encryption
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Markov ciphers and differential cryptanalysis
EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
A Unified Approach to Related-Key Attacks
Fast Software Encryption
The Key-Dependent Attack on Block Ciphers
ASIACRYPT '09 Proceedings of the 15th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Improved DST Cryptanalysis of IDEA
SAC'06 Proceedings of the 13th international conference on Selected areas in cryptography
New cryptanalytic results on IDEA
ASIACRYPT'06 Proceedings of the 12th international conference on Theory and Application of Cryptology and Information Security
FSE'07 Proceedings of the 14th international conference on Fast Software Encryption
Collisions for the WIDEA-8 compression function
CT-RSA'13 Proceedings of the 13th international conference on Topics in Cryptology
Differential entropy analysis of the IDEA block cipher
Journal of Computational and Applied Mathematics
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In this paper, we describe a sequence of simple, yet efficient chosen-plaintext (or chosen-ciphertext) attacks against reduced-round versions of IDEA (with 2, 2.5, 3, 3.5, and 4 rounds) which compare favourably with the best known attacks: some of them decrease considerably the time complexity given the same order of data at disposal while other ones decrease the amount of necessary known- or chosen-plaintext pairs under comparable time complexities. Additionally, we show how to trade time and memory for some of the known-plaintext attacks of Nakahara et al.