Miniaturization of passive components, while mounting them close to the active devices to form ultrathin high-performance power and RF modules, is a key enabler for next-generation multifunctional miniaturized systems. Traditional microscale materials do not lead to adequate enhancement in volumetric densities to miniaturize passive components as thin films or thin integrated passive devices. W...

Moustique is one of the sixteen finalists in the eSTREAM stream cipher project. Unlike the other finalists it is a self-synchronising cipher and therefore offers very different functional properties, compared to the other candidates. We present simple related-key phenomena in Moustique that lead to the generation of strongly correlated keystreams and to powerful key-recovery attacks. Our best k...

WEP is a protocol for securing wireless networks. In the past years, many attacks on WEP have been published, totally breaking WEP’s security. This thesis summarizes all major attacks on WEP. Additionally a new attack, the PTW attack, is introduced, which was partially developed by the author of this document. Some advanced versions of the PTW attack which are more suiteable in certain environm...

In this paper we present two related-key attacks on the full AES. For AES-256 we show the first key recovery attack that works for all the keys and has complexity 2, while the recent attack by Biryukov-Khovratovich-Nikolić works for a weak key class and has higher complexity. The second attack is the first cryptanalysis of the full AES192. Both our attacks are boomerang attacks, which are based...

We show that a distinguishing attack in the related key model on an EvenMansour block cipher can readily be converted into an extremely efficient key recovery attack. Concerned ciphers include in particular all iterated Even-Mansour schemes with independent keys. We apply this observation to the Caesar candidate Prøst-OTR and are able to recover the whole key with a number of requests linear in...

Herein, the pressure-sensitive paint (PSP) was used to quantitatively investigate aerodynamic effect of an alula-like vortex generator, which is a bio-inspired passive flow control structure. The global pressure distributions on upper surface at different angles attack were measured determine strength sectional suction forces wing. An generator equipped leading edge wing enlarged area region (n...

We present an attack on SIDH utilising isogenies between polarized products of two supersingular elliptic curves. In the case arbitrary starting curve, our (discovered independently from [8]) has subexponential complexity, thus significantly reducing security and SIKE. When endomorphism ring curve is known, (here derived polynomial-time complexity assuming generalised Riemann hypothesis. Our ap...

Kerberos is a protocol for verifying the identity of principals (e.g., a workstation user or a network server) on an open network. The Kerberos protocol provides a facility called pre-authentication. Pre-authentication mechanisms can use this facility to extend the Kerberos protocol and prove the identity of a principal. This document describes a more formal model for this facility. The model d...

In cipher algorithms, the encryption and decryption are based on same key. There some limitations in for example polyalphabetic substitution key size must be equal to plaintext otherwise it will repeated if is known then becomes useless. This paper aims improve said by designing of Triple security algorithm (TKS) which modified maintain plaintext. Each character substituted an alternative messa...

This paper proposes an efficient and robust multi-server authentication scheme using smart cards. Security of this scheme depends upon cryptographic one-way hash function. This scheme allows remote users to access multiple servers without any need of separately registering with each server. Also, it gets rid of the use of verification table, permits users to select and update the password secur...