منابع مشابه
Meet-in-the-Middle Attacks on Reduced Round Piccolo
Piccolo is a lightweight block cipher designed by Sony Corporation and published in CHES 2011. It inherits the Generalized Feistel Network (GFN) structure and operates on a 64-bit state. It has two versions; Piccolo-80 and Piccolo-128 with 80-bit and 128-bit keys, respectively. In this paper, we propose meet-in-the-middle attacks on 14-round reduced Piccolo-80 and 16, 17-round reduced Piccolo-1...
متن کاملMeet-in-the-Middle Attacks on Reduced-Round Hierocrypt-3
Hierocrypt-3 is an SPN-based block cipher designed by Toshiba Corporation. It operates on 128-bit state using either 128, 192 or 256bit key. In this paper, we present two meet-in-the-middle attacks in the single-key setting on the 4-round reduced Hierocrypt-3 with 256-bit key. The first attack is based on the differential enumeration approach where we propose a truncated differential characteri...
متن کاملMeet-in-the-Middle Attacks on Round-Reduced Khudra
Khudra is a hardware-oriented lightweight block cipher that is designed to run efficiently on Field Programmable Gate Arrays. It employs an 18-rounds Generalized type-2 Feistel Structure with a 64bit block length and an 80-bit key. In this paper, we present Meet-inthe-Middle (MitM) attacks on 13 and 14 round-reduced Khudra. These attacks are based on finding a distinguisher that is evaluated of...
متن کاملMeet-in-the-Middle Attacks on Reduced-Round GOST
The block cipher GOST (GOST 28147-89) is a Russian standard for encryption and message authentication that is included in OpenSSL 1.0.0. In this paper, we present meet-in-the-middle attacks on several block ciphers, each consisting of 22 or fewer rounds of GOST. Our 22-round attack on rounds 10–31 requires only 5 known plaintexts and a computational effort equivalent to testing about 2 keys for...
متن کاملMeet-in-the-Middle Attacks on Reduced-Round XTEA
The block cipher XTEA, designed by Needham andWheeler, was published as a technical report in 1997. The cipher was a result of fixing some weaknesses in the cipher TEA (also designed by Wheeler and Needham), which was used in Microsoft’s Xbox gaming console. XTEA is a 64-round Feistel cipher with a block size of 64 bits and a key size of 128 bits. In this paper, we present meet-in-the-middle at...
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ژورنال
عنوان ژورنال: BMJ
سال: 1970
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.4.5726.46