Results 201 to 210 of about 412,934 (237)

Symmetric Encryption

2012
Abstract This chapter concerns symmetric encryption and introduces core concepts and algorithms. It explains the difference between stream and block ciphers and demonstrates how their different properties result in different uses. Two important block ciphers are considered in some detail.
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Symmetric Searchable Encryption with Sharing and Unsharing

2018
In this paper, we study Symmetric Searchable Encryption (SSE) in a multi-user setting in which each user dynamically shares its documents with selected other users, allowing sharees also to perform searches. We introduce the concept of a Symmetric Searchable Encryption with Sharing and Unsharing, an extension of Multi-Key Searchable Encryption (NSDI ...
Patel S., Persiano G., Yeo K.
openaire   +3 more sources

On the soundness of authenticate-then-encrypt

Proceedings of the 17th ACM conference on Computer and communications security, 2010
A communication channel from an honest sender A to an honest receiver B can be described as a system with three interfaces labeled A, B, and E (the adversary), respectively, where the security properties of the channel are characterized by the capabilities provided at the E-interface.A security mechanism, such as encryption or a message authentication ...
Maurer Ueli, Tackmann Björn
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Symmetric-Key Encryption

2002
Symmetric-key encryption schemes provide secure communication for a pair of communication partners. An adversary who intercepts a message should not get any significant information about its content. In this chapter, we give a short introduction to symmetric-key encryption. We explain the notions of stream and block ciphers.
Hans Delfs, Helmut Knebl
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Attribute-Based Symmetric Searchable Encryption

2020
Symmetric Searchable Encryption (SSE) is an encryption technique that allows users to search directly on their outsourced encrypted data while preserving the privacy of both the files and the queries. Unfortunately, majority of the SSE schemes allows users to either decrypt the whole ciphertext or nothing at all.
Hai-Van Dang, Amjad Ullah, Alexandros Bakas, Antonis Michalas   +3 more
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Symmetric-Key Homomorphic Encryption for Encrypted Data Processing

2009 IEEE International Conference on Communications, 2009
The difficulty of processing data in encrypted form has long been the barrier to the widespread use of encryption in data storage applications; improved security or privacy would always imply a sacrifice of functionality. Many applications, such as ASP, requiring a significant amount of processing at the data storage servers are hence precluded from ...
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Garbled Searchable Symmetric Encryption

2014
In a searchable symmetric encryption (SSE) scheme, a client can keyword search over symmetrically-encrypted files which he stored on the server (ideally without leaking any information to the server). In this paper, we show the first multiple keyword search SSE scheme such that even the search formula \(f\) (AND, OR and so on) is kept secret.
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Undecryptable symmetric encryption

2011 IEEE GCC Conference and Exhibition (GCC), 2011
Cryptography is necessary where the confidentiality of information needs to be protected, but it often not sufficient. There are many cases where a persistent attacker can obtain the secret keys in use on a system, no matter how much the system tries to prevent this (e.g. cold-boot attacks, DRM circumvention).
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Symmetric Encryption

2009
Michael Coles, Rodney Landrum
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Symmetric text encryption scheme based Karhunen Loeve transform

Journal of Discrete Mathematical Sciences and Cryptography, 2022
Inaam R Al-Saiq
exaly