Deal -a 128-bit Block Cipher
نویسنده
چکیده
We propose a new block cipher, DEAL, based on the DES (DEA). DEAL has a block size of 128 bits and allows for three key sizes of 128, 192, and 256 bits respectively. Our proposal has several advantages to other schemes: because of the large blocks, the problem of the \matching ciphertext attacks" is made small, and the encryption rate is similar to that of triple-DES. We conjecture that the most realistic (or the least unrealistic) attack on all versions of DEAL is an exhaustive search for the keys. We have suggested ANSI to include DEAL in the ANSI standard X9.52. We also suggest DEAL as a candidate for the NIST AES standard.
منابع مشابه
On the Security of the 128-Bit Block Cipher DEAL
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 DEAL192, 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 p...
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