Download Advanced Encryption Standard – AES: 4th International by Hans Dobbertin, Vincent Rijmen, Visit Amazon's Aleksandra PDF

By Hans Dobbertin, Vincent Rijmen, Visit Amazon's Aleksandra Sowa Page, search results, Learn about Author Central, Aleksandra Sowa,

This booklet const?tutes the completely refereed postproceedings of the 4th foreign convention at the complicated Encryption average, AES 2004, held in Bonn, Germany in may perhaps 2004.

The 10 revised complete papers offered including an introductory survey and four invited papers by way of major researchers have been conscientiously chosen in the course of rounds of reviewing and development. The papers are equipped in topical sections on cryptanalytic assaults and similar themes, algebraic assaults and comparable effects, implementations, and different themes. All in all, the papers represent a most recent overview of the cutting-edge of information encryption utilizing the complicated Encryption typical AES, the de facto international usual for facts encryption.

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Additional info for Advanced Encryption Standard – AES: 4th International Conference, AES 2004, Bonn, Germany, May 10-12, 2004, Revised Selected and Invited Papers

Sample text

This result is a part of the correct temporary result K15 38 C. Giraud before the XOR with K 10 . So, we XOR it with the corresponding bytes of the 10 10 and K15 . ciphertext C to obtain the bytes K210 , K310 , K510 , K610 , K810 , K910 , K12 9 10 Using the known bytes of K , we obtain 6 other bytes of K by the following relations: 10 9 = K910 ⊕ K13 K13 10 10 9 K11 = K15 ⊕ K15 10 9 K10 = K610 ⊕ K10 (30) 10 10 9 K14 = K10 ⊕ K14 10 9 K710 = K11 ⊕ K11 K410 = K810 ⊕ K89 Finally, we find the last 2 unknown bytes of K 10 by a very fast exhaustive search and we obtain the AES key from K 10 by applying the inverse of the Key Scheduling.

LP t (a, b; kt ) and ELP t (a, b) are LP and ELP values, respectively, for round t (1 ≤ t ≤ T ). Superscripts of the form [i . . 3] (∆x, ∆y) is an EDP value over rounds 1 . . 3. T ] (a, b) . T ] (∆x, ∆y) . (4) For linear cryptanalysis / differential cryptanalysis, the data complexity of an attack with a given probability of success is proportional to the inverse of the MELP / MEDP. Therefore provable security can be claimed if this value is sufficiently small that the corresponding data complexity is prohibitive [19, 20].

The AES key for an AES-128. For more information about this fault model, the reader can refer to [13]. For the sake of simplicity, we describe the attack on an AES using a 128-bit key. K 8 M 8 Key Scheduling K 9 MC o SR o SB Key Scheduling M 9 SR o SB Round 9 10 K C Round 10 Fig. 2. The last rounds of an AES-128 By definition, we have C = Shif tRows(SubBytes(M 9 )) ⊕ K 10 (1) Let us denote by SubByte(Mji ) the result of the substitution table applied on the byte Mji and by Shif tRow(j) the position of the j th byte of a temporary result after applying the ShiftRows transformation.

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