Sökning: id:"swepub:oai:DiVA.org:kth-71033" >
On IV Setup of Poma...
On IV Setup of Pomaranch
-
- Hasanzadeh, Mahdi M. (författare)
- Zaeim Electronic Industries Company, Tehran, Iran
-
- Khazaei, Shahram (författare)
- Zaeim Electronic Industries Company, Tehran, Iran
-
- Kholosha, Alexander (författare)
- The Selmer Center, University of Bergen, Bergen, Norway
-
(creator_code:org_t)
- 2006
- 2006
- Engelska.
- Relaterad länk:
-
https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Pomaranch is a synchronous bit-oriented stream cipher submitted to eSTREAM, the ECRYPT Stream Cipher Project. Following the recently published chosen IV [1] and correlation [7] key-recovery attacks, the authors changed the configuration of jump registers and introduced two new key-IV setup procedures for the cipher. We call the updated version as Tweaked Pomaranch vs. Original Pomaranch [4]. In this paper we use the findings of [7] to mount a chosen IV key-recovery attack on the Original Pomaranch with computational complexity of O(273.5). The attack is also applicable to the first key-IV setup proposal for Tweaked Pomaranch with computational complexity of O(2 117.7). The alternative key-IV setup for Tweaked Pomaranch is immune against our attack. Both versions of Pomaranch deal with 128 bit keys.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Nyckelord
- ECRYPT Stream Cipher Project
- Pomaranch
- CJCSG
- Jump Register
- Cryptanalysis
- Linear Equivalence Bias
- Clock-Controlled LFSR
- Security Evaluation
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)