How to Protect DES Against Exhaustive Key Search
CRYPTO '96 Proceedings of the 16th Annual International Cryptology Conference on Advances in Cryptology
Improving Implementable Meet-in-the-Middle Attacks by Orders of Magnitude
CRYPTO '96 Proceedings of the 16th Annual International Cryptology Conference on Advances in Cryptology
On the Security of Double and 2-Key Triple Modes of Operation
FSE '99 Proceedings of the 6th International Workshop on Fast Software Encryption
Reflection Cryptanalysis of Some Ciphers
INDOCRYPT '08 Proceedings of the 9th International Conference on Cryptology in India: Progress in Cryptology
Increasing block sizes using feistel networks: the example of the AES
Cryptography and Security
Square reflection cryptanalysis of 5-round Feistel networks with permutations
Information Processing Letters
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DEAL is a DES-based block cipher proposed by Knudsen. The block size of DEAL is 128 bits, twice as much as the DES block size. The main result of the current paper is a certificational attack on DEAL- 192, the DEAL variant with a 192-bit key. The attack allows a trade-off between the number of plaintext/ciphertext pairs and the time for the attacker's computations. Nevertheless, the DEAL design principle seems to be a useful way of doubling the block size of a given block cipher.