Results 31 to 40 of about 2,190 (281)

Provably secure and efficient certificateless sequential multi-signature scheme in random oracle model

open access: yesTongxin xuebao, 2014
Certificate less sequential multi-signature scheme could resolve the problem of authentication of recommendation information transmitted through trust train.Qin yan-lin,et al proposed an efficient certificateless sequential multi-signature scheme,and ...
Yan XU   +3 more
doaj   +2 more sources

Living body recognition method based on facial feature point motion

open access: yes网络与信息安全学报, 2018
A kind of living body recognition method was proposed,which was applied in mobile terminal and based on the deep learning.A facial movements LSTM network was trained using data sets.When users input a random sequence of video,user’s facial feature point ...
Yulong WANG,Kaiyuan LIU
doaj   +3 more sources

Robust Copy-Move Forgery Detection Technique Against Image Degradation and Geometric Distortion Attacks [PDF]

open access: yes, 2023
<p>The rapid pace of the digital age has led to an increase in the illegal copying, reproduction, and creation of forgeries of digital images. Copy-move forgery is one of the most common image forgery techniques which is used for tampering with ...
Tahaoglu, Gul   +9 more
core   +1 more source

On Beyond-Birthday-Bound Security: Revisiting the Development of ISO/IEC 9797-1 MACs

open access: yesIACR Transactions on Symmetric Cryptology, 2019
ISO/IEC 9797-1 is an international standard for block-cipher-based Message Authentication Code (MAC). The current version ISO/IEC 9797-1:2011 specifies six single-pass CBC-like MAC structures that are capped at the birthday bound security.
Yaobin Shen, Lei Wang
doaj   +1 more source

Security of COFB against Chosen Ciphertext Attacks

open access: yesIACR Transactions on Symmetric Cryptology, 2022
COFB is a lightweight Authenticated Encryption with Associated Data (AEAD) mode based on block ciphers. It was proposed in CHES 2017 and is the basis for GIFT-COFB, a finalist in the NIST lightweight standardization project.
Mustafa Khairallah
doaj   +1 more source

CoMoFoD #x2014; New database for copy-move forgery detection [PDF]

open access: yes, 2013
Due to the availability of many sophisticated image processing tools, a digital image forgery is nowadays very often used. One of the common forgery method is a copy-move forgery, where part of an image is copied to another location in the same image ...
Grgic, M   +3 more
core  

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han   +5 more
wiley   +1 more source

Harnessing the Reactivity of Sulfinate Salts With Cystine: An Umpolung Approach to Residue‐Specific Peptide Modification

open access: yesAngewandte Chemie, EarlyView.
While cysteine is widely employed as a nucleophilic handle for peptide modification, the electrophilicity of the oxidized form, cystine, is rarely exploited. This study describes a mild, photochemical coupling of sulfinate salts with peptide disulfides.
Joshua M. Hammond   +7 more
wiley   +2 more sources

Key Recovery and Forgery Attacks on the MacDES MAC Algorithm [PDF]

open access: yes, 2000
We describe a series of new attacks on a CBC-MAC algorithm due to Knudsen and Preneel including two key recovery attacks and a forgery attack. Unlike previous attacks, these techniques will work when the MAC calculation involves prefixing the data to be MACed with a 'length block'. These attack methods provide new (tighter) upper bounds on the level of
Don Coppersmith   +2 more
openaire   +11 more sources

Immediate Organic Room‐Temperature Phosphorescence in Programmable Luminescent Tags Enabled by Oxygen‐Free Fabrication

open access: yesAdvanced Materials Technologies, EarlyView.
Programmable luminescent tags based on organic room‐temperature phosphorescence are shown to be governed by oxygen incorporation during fabrication. Oxygen‐free processing enables immediate phosphorescence activation, controlled thermal preconditioning, and tunable activation doses.
Lucy Winkler   +2 more
wiley   +1 more source

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