Symmetric Cryptography
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Método Criptográco Baseado em Autômatos Celulares Bidimensionais para Cifragem de Imagens
This work proposes a new symmetric-key cryptographical model based on von Neumann two-dimensional, heterogeneous and non-additive cellular automata. The encryption process is performed by calculating consecutive pre-images and decryption process by the forward evolution of cellular automata. The proposed model was based on earlier work which used one-dimensi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/12/2010
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2. Algoritmos de autenticação de mensagens para redes de sensores. / Message authentication algorithms for wireless sensor networks.
Security is an important concern in any modern network. However, networks that are highly dependent on constrained devices (such as sensors, tokens and smart cards) impose a difficult challenge: their reduced availability of memory, processing power and (specially) energy hinders the deployment of many modern cryptographic algorithms known to be secure. This
Publicado em: 2010
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3. Middleware seguro para redes de sensores sem fio
There is a variety of application scenarios in wireless sensor networks such as medical monitoring, military, home and office security, agriculture and so on. These applications deal with Wireless Sensor Networks (WSNs) odd particularities such as limited power and computational capacities, hardware heterogeneity, low bandwidth, dynamic topology and scalabil
Publicado em: 2009
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4. Cryptographic algorithms for sensor networks. / Algoritmos criptográficos para redes de sensores.
The need for security is a great concern in any modern network. However, networks that are highly dependent of constrained devices (such as sensors, tokens and smart cards) impose a difficult challenge: their reduced availability of memory, processing power and (more importantly) energy hinders the deployment of many important cryptographic algorithms known
Publicado em: 2008