搜索结果: 1-15 共查到“DES”相关记录255条 . 查询时间(0.071 秒)
产IAA菌株的UV和DES诱变筛选及培养条件优化
IAA 诱变 有机磷 发酵 紫外(UV) 硫酸二乙酯(DES)
2020/12/4
为了得到高产吲哚-3-乙酸(IAA)菌株,采用紫外(UV)诱变和硫酸二乙酯(DES)诱变的方法,对从烟草根际土壤中分离得到的一株产IAA并具有溶有机磷性状的促生菌进行诱变选育,并对获得的目标菌株的发酵培养条件进行正交优化。结果表明,菌株经UV诱变和DES诱变均能有效提高其IAA产量。诱变条件为 UV(15 W,30 cm)照射1 min或2 mg·mL-1 DES处理30 min时,得到1株高产I...
Cryptanalysis of the Full DES and the Full 3DES Using a New Linear Property
linear cryptanalysis DES 3DES
2019/1/2
In this paper we extend the work presented by Ashur and Posteuca in BalkanCryptSec 2018, by designing 0-correlation key-dependent linear trails covering more than one round of DES. First, we design a ...
Improved Brute-Force Search Strategies for Single-Trace and Few-Traces Template Attacks on the DES Round Keys
DES TDES Template Attack
2018/11/7
We present an improved search strategy for a template attack on the secret DES key of a widely-used smart card, which is based on a Common-Criteria certified chip. We use the logarithm of the probabil...
At Indocrypt 2016, Ashur et al. showed that linear hulls are sometimes formed in a single round of a cipher (exemplifying on Simon ciphers) and showed that the success rate of an attack may be influen...
A first-order chosen-plaintext DPA attack on the third round of DES
side-channel attack DPA countermeasure
2018/1/2
DPA attacks usually exhibit a "divide-and-conquer" property: the adversary needs to enumerate only a small space of the key (a key sub-space) when performing the DPA attack. This is achieved trivially...
Linear cryptanalysis of DES, proposed by Matsui in 1993, has had a seminal impact on symmetric-key cryptography, having seen massive research efforts over the past two decades. It has spawned many var...
Brute–Force Search Strategies for Single–Trace and Few–Traces Template Attacks on the DES Round Keys of a Recent Smart Card
DES side-channel attack DES key schedule
2017/6/28
Recently, a new template attack on the DES key scheduling was demonstrated that allows recovery of a sufficiently large portion of the DES key of a widely deployed certified smart card chip using a si...
Faster Secure Multi-Party Computation of AES and DES Using Lookup Tables
multi-party computation block cipher implementation
2017/5/2
We present an actively secure protocol for secure multi-party computation based on lookup tables, by extending the recent, two-party `TinyTable' protocol of Damgard et al. (ePrint 2016). Like TinyTabl...
Single--Trace Template Attack on the DES Round Keys of a Recent Smart Card
DES TDES Template Attack
2017/2/20
A new template attack on the DES key scheduling is demonstrated that allows recovery of a sufficiently large portion of the DES key of a recent and widely deployed smart card chip with a {\it single} ...
On a Linear Cryptanalysis of a Family of Modified DES Ciphers with Even Weight S-boxes
parity check linear cryptanalysis linear characteristics
2017/2/20
We investigate the effect of inserting extra linearity in the Data Encryption Standard (DES) through appropriate singular linear encodings of the output of the individual S-boxes. More specifically, w...
L’effet a long terme de la vie reproductive sur la mortalite des femmes en milieu rural sénégalais
Mortalite differentielle descendance finale site de suivi demographique milieu rural personnes agees
2016/7/7
En Afrique subsaharienne, peu de donnees existent pour etudier les niveaux, les causes ou encore les inegalites de mortalite des personnes agees. Ainsi, les effets a long terme de la vie reproductive ...
Lieu du deces au Burkina:influence des caracteristiques sociodemographiques et environnementales
Lieu du deces determinants cause de deces mortalite Burkina Faso
2016/7/7
Cet article explore les facteurs associes au lieu de deces au Burkina Faso a partir des donnees de mortalite du systeme de surveillance demographique et de sante de Kaya (Kaya HDSS). Un modele de regr...
Structures familiales,encadrement communautaire et survie des enfants.Une recherche en milieu rural malien
structures familiales groupe domestique mortalite des enfants approche longitudinale Mali
2016/7/7
L’influence de l’environnement familial sur la survie des enfants est une question difficile a aborder au moyen de donnees retrospectives, en particulier dans des contextes où les structures familiale...
Analyse Multiniveau des Facteurs Associes au Retard dans la Vaccination des Enfants au Burkina Faso et au Mali
Vaccination de routine retard de vaccination facteurs de risque Donnees EDS effet con-textuel Burkina Faso Mali
2016/7/7
Plusieurs etudes effectuees dans les pays developpes et les pays anglophones d’Afrique montrent que le contexte influence le statut vaccinal des enfants ainsi que l’administration de certains vaccins ...
Surmortalite des enfants dans les quartiers informels de Ouagadougou:effet de composition ou effet de contexte?
Mortalite des enfants Ouagadougou Afrique sub-saharienne Quartiers informels Observatoire
2016/7/7
En Afrique sub-saharienne, les auteurs cherchant a expliquer la surmortalite des enfants des quartiers informels ont rarement essaye de dissocier les caracteristiques sociodemographiques des parents, ...