Now showing items 1-11 of 11

    • 256 bit standardized crypto for 650 GE – GOST revisited 

      Poschmann, Axel; Ling, San; Wang, Huaxiong (2010)
      The former Soviet encryption algorithm GOST 28147-89 has been standardized by the Russian standardization agency in 1989 and extensive security analysis has been done since. So far no weaknesses have been found and GOST ...
    • Enabling 3-share threshold implementations for all 4-bit S-boxes 

      Kutzner, Sebastian; Nguyen, Phuong Ha; Poschmann, Axel (2012)
      Threshold Implementation (TI) is an elegant and widely accepted countermeasure against 1-st order Differential Power Analysis (DPA) in Side Channel Attacks. The 3-share TI is the most efficient version of TI, but so far, ...
    • Enabling standardized cryptography on ultra-constrained 4-bit microcontrollers 

      Kaufmann, Tino; Poschmann, Axel (2012)
      4-bit microcontrollers (MCUs) are among the simplest, cheapest and most abundant computing devices that, thanks to their low power consumption, may be deployed even in passive RFID tags. Besides, 4-bit MCUs are embedded ...
    • Feasibility and practicability of standardized cryptography on 4-bit micro controllers 

      Jacob, Nisha; Saetang, Sirote; Chen, Chien-Ning; Kutzner, Sebastian; Ling, San; Poschmann, Axel (2013)
      Myriads of ultra-constrained 4-bit micro controllers (MCUs) are deployed in (mostly) legacy devices, some in security sensitive applications, such as remote access and control systems or all sort of sensors. Yet the ...
    • On 3-share threshold implementations for 4-Bit S-boxes 

      Kutzner, Sebastian; Nguyen, Phuong Ha; Poschmann, Axel; Wang, Huaxiong (2013)
      One of the most promising lightweight hardware countermeasures against SCA attacks is the so-called Threshold Implementation (TI) [12] countermeasure. In this work we discuss issues towards its applicability and introduce ...
    • Parallelisable variants of Camellia and SMS4 block cipher : p-Camellia and p-SMS4 

      Yap, Huihui; Khoo, Khoongming; Poschmann, Axel (2013)
      We propose two parallelisable variants of Camellia and SMS4 block ciphers based on the n-cell GF-NLFSR. The n-cell generalised Feistel-non-linear feedback shift register (GF-NLFSR) structure (Choy et al., 2009a) is a ...
    • Pushing the limits : a very compact and a threshold implementation of AES 

      Moradi, Amir; Poschmann, Axel; Ling, San; Paar, Christof; Wang, Huaxiong (2011)
      Our contribution is twofold: first we describe a very compact hardware implementation of AES-128, which requires only 2400 GE. This is to the best of our knowledge the smallest implementation reported so far. Then we apply ...
    • Security challenges in automotive hardware/software architecture design 

      Sagstetter, Florian; Lukasiewycz, Martin; Steinhorst, Sebastian; Wolf, Marko; Bouard, Alexandre; Harris, William R.; Jha, Somesh.; Peyrin, Thomas; Poschmann, Axel; Chakraborty, Samarjit (2013)
      This paper is an introduction to security challenges for the design of automotive hardware/software architectures. State-of-the-art automotive architectures are highly heterogeneous and complex systems that rely on distributed ...
    • Side-channel resistant crypto for less than 2,300 GE 

      Poschmann, Axel; Moradi, Amir; Khoo, Khoongming; Lim, Chu Wee; Wang, Huaxiong; Ling, San (2010)
      A provably secure countermeasure against first order side-channel attacks was proposed by Nikova et al. (P. Ning, S. Qing, N. Li (eds.) International conference in information and communications security. Lecture notes in ...
    • Standardized signature algorithms on ultra-constrained 4-bit MCU 

      Chen, Chien-Ning; Jacob, Nisha; Kutzner, Sebastian; Ling, San; Poschmann, Axel; Saetang, Sirote (2012)
      In this work, we implement all three digital signature schemes specified in Digital Signature Standard (FIPS 186-3), including DSA and RSA (based on modular exponentiation) as well as ECDSA (based on elliptic curve point ...
    • TROJANUS : An ultra-lightweight side-channel leakage generator for FPGAs 

      Kutzner, Sebastian; Poschmann, Axel; Stöttinger, Marc (2013)
      In this article we present a new side-channel building block for FPGAs, which, akin to the old Roman god of Janus, has two contradictory faces: as a watermarking tool, it allows to uniquely identify IP cores by adding a ...