• Title/Summary/Keyword: DES

Search Result 1,390, Processing Time 0.035 seconds

Die Rolle und Grenze des Gerichts in der Schiedsgerichtsbarkeit (중재절차에서 법원의 역할과 한계 - 개정 중재법과 UNCITRAL 모델법 등을 중심으로 -)

  • Jeong, Sunju
    • Journal of Arbitration Studies
    • /
    • v.10 no.1
    • /
    • pp.47-68
    • /
    • 2000
  • Neben der staatlichen Gerichtsbarkeit gibt es eine gesetzlich legitimierte Schiedsgerichtsbarkeit durch Privatpersonen nach dem Schiedsverfahrensrecht. Diese Institution entwickelte sich zwar als $\ddot{U}bergangsstufe$ von der Selbsthilfe zur staatlichen Gerichtsbarkeit und aber erlangt zur Zeit mit dem Wirtschaftswachstum, vor allem mit der Verschmelzung des internationalen Handels eine hervorragende Stellung im Justizsystem. $F\ddot{u}r$ die weitere Entwicklung der Schiedsgerichtsbarkeit ist die $Unterst\ddot{u}tzung$ und Kontrolle des staatlichen Gerichts von großer Bedeutung. In der vorliegenden Arbeit handelt es sich $haupts\ddot{a}chlich$ um die Rolle und Grenze des Gerichts in der Schiedsgerichtsbarkeit. Dabei ist die Rolle des Gerichts in 3 Teilen geteilt untersucht, und zwar die aktive, die passive und die kontrollierende Rolle des Gerichts. Unter der ersten $geh\ddot{o}ren$ das Eingreifen des Gerichts in das Schiedsverfahren, z.B. bei der Bestellung und Ablehnung des Schiedsrichters und bei der Frage $\ddot{u}ber$ die Bedendigung des Schiedsrichteramtes und die einstweiligen Maßnahmen des Gerichts sowie die $Unterst\ddot{u}tzung$ des Gerichts bei der Beweisaufnahme. Weil das Schiedsgericht keine Zwangsgewalt besitzt, ist die Schiedsgerichtsbarkeit in bestimmten $F\ddot{a}llen$ auf die aktive Mitwirkung des Gerichts stark angewiesen. Die Rolle des Gerichts in der Schiedsgerichtsbarkeit ist aber durch die Entscheidungsbefugnis des Schiedsgerichts $\ddot{u}ber$ die eigene $Zust\ddot{a}ndigkeit$ und $\ddot{u}ber$ die $G\ddot{u}ltigkeit$ der Schiedsvereinbarung(sog. Kompentz-Kompetenz) und durch den einstweiligen Rechtsschutz durch das Schiedsgericht $eingeschr\ddot{a}nkt$. Hier $beschr\ddot{a}nkt$ sich das Gericht auf die passive Rolle. Die Schiedsgerichtsbarkeit ist außerdem der Kontrolle durch das staatliche Gericht zu unterziehen, sei es durch die Aufhebungsklage oder sei es durch die Entscheidung $\ddot{u}ber$ die Vollstreckung des Schiedsspruchs. Besonders im $Vollstreckbarerkl\ddot{a}rungsverfahren$ hat das ordentliche Gericht eine umfangreiche $\ddot{U}berpr\ddot{u}fungsm\ddot{o}glichkeit$ des Schiedsspruchs. Einerseits soll die Stellung der Schiedsgerichtsbarkeit nicht durch die Mitwirkung und Kontrolle des staatlichen Gerichts entwertet werden, andererseits ist es aber Aufgabe des Staates, die Richtigkeit der schiedsgerichtlichen Entscheidung zu garantieren. In der Schiedsgerichtsbarkeit ist auch das Rechtsstaatsprinzip aufrechterhalten zu bleiben. Abschließend ist festzustellen, daß die Schiedsgerichtsbarkeit ohne Mitwirkung des staatlichen Gerichts nicht auskommt, die Rolle des Gerichts aber auf das erforderliche Maß $beschr\ddot{a}nkt$ sein sollte.

  • PDF

A Countermeasure against Brute-force Attack using Digital Holography and DES Algorithm (디지털 홀로그래피와 DES 알고리즘을 이용한 전수키 공격 대응 기법)

  • Noh, Chang-Oh;Moon, In-Kyu;Cho, Beom-Joon
    • Journal of the Korea Society of Computer and Information
    • /
    • v.16 no.5
    • /
    • pp.73-78
    • /
    • 2011
  • The DES encryption algorithm employed in information security has a strong avalanche effect, and the processing speed to encrypt is also fast. However, due to the H/W advances, the secret key length of DES having 56bits is not enough so that it is easily exposed to brute force attack. In this paper, we present a new method to significantly increase the secret key length in the DES by integration of digital holography and DES algorithm. In addition, we evaluate the encryption performance of the proposed method by measuring the avalanche effect and verify the possibility of it.

A Study on a Variable P box Generation Using a DES Key Expansion (DES 키 확장을 이용한 가변 P box 생성에 관한 연구)

  • Lee, Jun
    • The KIPS Transactions:PartC
    • /
    • v.18C no.5
    • /
    • pp.287-292
    • /
    • 2011
  • Using an expanded DES key, we suggest a block cipher algorithm to generate and to use a variable P box. We also present an efficient way for the implementation of variable P box at each round. Using counter examples on Differential Cryptanalysis(DC) and Linear Cryptanalysis(LC), we show that the suggested algorithm is strong enough to overcome those attacks. Compared with the real key bits of triple DES(3DES), the new algorithm is much safer in the points of the exhaustive attack. The results of computer simulations show that the new algorithm is almost 3 times faster than 3DES regarding the cipher process time.

An Efficient Encryption Technique for Cloud-Computing in Mobile Environments (모바일환경에서 클라우드 컴퓨팅 보안을 위한 효율적인 암호화기술)

  • Hwang, Jae-Young;Choi, Dong-Wook;Chung, Yeon-Ho
    • Journal of the Institute of Convergence Signal Processing
    • /
    • v.12 no.4
    • /
    • pp.298-302
    • /
    • 2011
  • In this paper, we propose an efficient encryption algorithm for ensuring data privacy and security for cloud computing in mobile environments. As part of the evaluation of the proposed algorithm, we have implemented the algorithm in a PC environment and compared with the well-known encryption algorithm of the Data Encryption Standard (DES). The conventional DES algorithm is hard to maintain privacy, due to the fact that its initial and final permutation are known to the network To prevent this critical weakness, a triple DES algorithm has been reported, but it has a disadvantage of long encryption time. In this study, we propose random interleaving algorithm that uses the permutation table for improving privacy further. The proposed algorithm is found to run faster than the triple DES algorithm and also offers improved security in a wireless communication system.

Effect of 3-Methylcholanthrene on Rat Uterus: Uterine Growth and Mechanism of Action of 3-Methylcholanthrene

  • Sheen, Yhun-Y.;Kim, Sun-S.;Yun, Hea-C.
    • Archives of Pharmacal Research
    • /
    • v.16 no.4
    • /
    • pp.276-282
    • /
    • 1993
  • This study has been undertaken to examine the effect of 3-methylcholanthrene (3MC) on rat uterine growth and to understand the mechanism of action of 3MC in rat uterus. After diethylstilbesterol(DES) or tamoxifen(TAM) or 3MC or DES plus TAM or DES plus 3MC was administered into immature female rats, uterine weight over corn oil-treated uteri. 3MC treatment had no effect on uterine weight but, DES stimulated uterine weight was inhibited by 3MC concomitant tratment. While TAM alone treatment showed slight increase in uterine wieght, inhibited uterine growth simulated by DES when it was adiministrated with DES condirect binding assay with $[^3H]$ estradiol and the relative binding affinities of 3MC and TAM were estimated by competetion assy. Estradiol tumed out to have high affinity for rat uterine estrogen receptor (kd = 0.4 nM). The relative binding affinities of TAM and 3MC were 1% and 4.7% that of DES for rat uterine estrogen receptor, respectively. 3MC was shown to have similar affinity for eat uterine estrogen receptor to that of TAM. Effects of DES 3MC and TAM administration in vivo on rat uterine estrogen recptor level were examined. It was confirmed that the estrogen, DES and antiestrogen, TAM decreased estrogen receptor levels from rat ulterus and also 3MC decreased rat uterine estrogen receptor level when rats were treated with DES, TAM and 3MC in vivo. Data indicates that 3MC acts as an antiestrogen mediated through estrogen receptor system.

  • PDF

Expanding Effective DES Key using Self Exclusive XOR : SX-DES (배타적 배타논리를 이용한 DES(SX-DES) 키 확장)

  • 노우식;김혁구
    • Proceedings of the Korea Institutes of Information Security and Cryptology Conference
    • /
    • 1997.11a
    • /
    • pp.322-331
    • /
    • 1997
  • DES의 키 길이를 확장 시킴에 있어서 처리 속도의 저하없이 112 비트의 키를 사용할 수 있는 SX-DES 구조를 제안하고 SX-DES애서 DES의 P-Box가 SX-DES에 대한 Differential Crytanalysis 공격에 의해 키 길이가 감소되는 효과를 가지고 있으므로 P-Box를 재구성하여 SX-DES가 확장된 키 효과를 충분히 가질 수 있도록 하였다. 처리시간은 DES보다 2 % 정도 더 소요되었다.

  • PDF

A Self-standing and Binder-free Electrodes Fabricated from Carbon Nanotubes and an Electrodeposited Current Collector Applied in Lithium-ion Batteries

  • Luais, Erwann;Mery, Adrien;Abou-Rjeily, John;Sakai, Joe;Tran-Van, Francois;Ghamouss, Fouad
    • Journal of Electrochemical Science and Technology
    • /
    • v.10 no.4
    • /
    • pp.373-380
    • /
    • 2019
  • In this paper, we report the preparation of a flexible, self-standing and binder-free carbon nanotubes (CNTs) electrode with an electro-generated current collector. The copper current collector layer was electrodeposited on the backside of CNTs self-standing film obtained by a simple filtration process. The obtained CNTs-Cu assembly was used as a negative electrode in Li-ion batteries exhibiting good performance along with proving its applicability in flexible batteries.

Dispersion of Aqueous $Al_2O_3$Suspensions with Electrolytes; Influence of the Counter Ion

  • Cecile Pagnoux;Richard Laucournet;Thierry Chartier;Baumard, Jean-Francois
    • The Korean Journal of Ceramics
    • /
    • v.6 no.3
    • /
    • pp.280-285
    • /
    • 2000
  • The electrolyte, $(HO)_2C_6H_2(SO_3Na)_2H_2O $(Tiron), disperses efficiently alumina powder in aqueous media and stable suspensions with 60 vol% solid loading can be prepared. The strong adsorption of this additive is mainly due to the ability of the molecule to form chelate rings with the particle surface but electrostatic interactions between the surface charge and the anionic dispersant strongly influence the amount of Tiron adsorbed. By using a cationic exchange route to substitute the counter ion which neutralizes the sulfonate groups, new molecules of dispersant have been prepared, either with mineral cations as $Li^+,\; Na+^,\; NH_4^\;+$, or with organic cations as counter ion but organic counter ions lead to less to less viscous suspensions than $Na^+$ in particular when the number of carbon atoms of the aliphatic chain increases from 1 to 3.

  • PDF

A New Crossing Structure Based DB-DES Algorithm for Enhancing Encryption Security (암호화 강도 향상을 위한 새로운 교차구조기반의 DB-DES 알고리즘)

  • Lee, Jun-Yong;Kim, Dae-Young
    • Journal of the Korea Society of Computer and Information
    • /
    • v.12 no.2 s.46
    • /
    • pp.63-70
    • /
    • 2007
  • The Data Encryption Standard (DES) is a block cipher that encrypts a 64 bit block of plaintext into a 64 bit block of ciphertext. The DES has been a worldwide standard for 20 years since it was adopted in 1976. strong. But, due to the rapid development of hardware techniques and cryptanalysis, the DES with 64-bit key is considered to be not secure at the present time. Therefore it became necessary to increase the security of DES. The NG-DES(New Generation DES)[1] is an encryption system which upgrades the encryption security of DES by the key extension and the usage of non-linear f function. It extends not only the size of plaintext and ciphertext to 128 bit but also the Fiestel structure used in each round. This structure has a weak point that the change of each bit of plaintext does not affect all bits of ciphertext simultaneously. In this paper, we propose a modified Fiestel structure of DES and thus increased confusion and diffusion by effectively cross-connecting between outputs in a round and inputs in next round.

  • PDF