DFA on AES

نویسنده

  • Christophe Giraud
چکیده

In this paper we describe two different DFA attacks on the AES. The first one uses a theoretical fault model that induces a fault on only one bit of an intermediate result, hence allowing us to obtain the key by using 50 faulty ciphertexts for an AES-128. The second attack uses a more realistic fault model: we assume that we may induce a fault on a whole byte. For an AES-128, this second attack provides the key by using less than 250 faulty ciphertexts.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

An Information Theoretic Perspective on the Differential Fault Analysis against AES

Differential Fault Analysis against AES has been actively studied these years. Based on similar assumptions of the fault injection, different DFA attacks against AES have been proposed. However, it is difficult to understand how different attack results are obtained for the same fault injection. It is also difficult to understand the relationship between similar assumptions of fault injection a...

متن کامل

An Information Theoretic Perspective on the Di erential Fault Analysis against AES

Di erential Fault Analysis (DFA) against AES has been actively studied these years. Based on similar assumptions of the fault injection, di erent DFA attacks against AES have been proposed. However, it is di cult to understand how di erent attack results are obtained for the same assumption of fault injection. It is also di cult to understand the relationship between similar assumptions of faul...

متن کامل

Piret and Quisquater's DFA on AES Revisited

At CHES 2003, Piret and Quisquater published a very efficient DFA on AES which has served as a basis for many variants published afterwards. In this paper, we revisit P&Q’s DFA on AES and we explain how this attack can be much more efficient than originally claimed. In particular, we show that only 2 (resp. 3) faulty ciphertexts allow an attacker to efficiently recover the key in the case of AE...

متن کامل

Provably Secure Concurrent Error Detection Against Differential Fault Analysis

Differential fault analysis (DFA) poses a significant threat to Advanced Encryption Standard (AES). It has been demonstrated that DFA can use only a single faulty ciphertext to reveal the secret key of AES in an average of 230 computation. Traditionally, concurrent error detection (CED) is used to protect AES against DFA. However, we emphasize that conventional CED assumes a uniform distributio...

متن کامل

Efficient Differential Fault Analysis for AES

This paper proposes improved post analysis methods for Differential Fault Analysis (DFA) against AES. In detail, we propose three techniques to improve the attack efficiency as 1) combining previous DFA methods, 2) performing a divide-and-conquer attack by considering the AES key-schedule structure, and 3) taking the linearity of the MixColumns operation into account. As a result, the expectati...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • IACR Cryptology ePrint Archive

دوره 2003  شماره 

صفحات  -

تاریخ انتشار 2003