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Anonymous Symmetric-Key Communication
2020We study anonymity of probabilistic encryption (pE) and probabilistic authenticated encryption (pAE). We start by providing concise game-based security definitions capturing anonymity for both pE and pAE, and then show that the commonly used notion of indistinguishability from random ciphertexts (IND$) indeed implies the anonymity notions for both pE ...
Fabio Banfi, Ueli Maurer
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The management of symmetric keys
Information Security Technical Report, 1997Abstract This paper defines three classes of key management protocol that can be used to establish symmetric cryptographic keys. It explores the relationship between the classes and the communications techniques used to carry data protected by the symmetric keys.
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Amortized Threshold Symmetric-key Encryption
Proceedings of the 2021 ACM SIGSAC Conference on Computer and Communications Security, 2021Threshold cryptography enables cryptographic operations while keeping the secret keys distributed at all times. Agrawal et al. (CCS'18) propose a framework for Distributed Symmetric-key Encryption (DiSE). They introduce a new notion of Threshold Symmetric-key Encryption (TSE), in that encryption and decryption are performed by interacting with a ...
Mihai Christodorescu +3 more
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Key Grids: A Protocol Family for Assigning Symmetric Keys
Proceedings of the 2006 IEEE International Conference on Network Protocols, 2006We describe a family of log n protocols for assigning symmetric keys to n processes in a network so that each process can use its assigned keys to communicate securely with every other process. The k-th protocol in our protocol family, where 1 les k les log n, assigns O(k2 kradicn) symmetric keys to each process in the network.
Amitanand S. Aiyer +2 more
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2015
In this chapter, we give an introduction to basic methods of symmetric-key cryptography. At first, we consider symmetric-key encryption.We explain the notions of stream and block ciphers. The operation modes of block ciphers are studied and, as prominent examples for block ciphers, DES and AES are described.
Hans Delfs, Helmut Knebl
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In this chapter, we give an introduction to basic methods of symmetric-key cryptography. At first, we consider symmetric-key encryption.We explain the notions of stream and block ciphers. The operation modes of block ciphers are studied and, as prominent examples for block ciphers, DES and AES are described.
Hans Delfs, Helmut Knebl
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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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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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Symmetric-key cryptosystem with DNA technology
Science in China Series F: Information Sciences, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MingXin Lu +3 more
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A symmetric key watermark for halftone images
2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2003In many printer and publishing applications, it is desirable to embed data in halftone images for copyright control and authentication purposes. While intentional attacks on printed matters may not be likely, unintentional attacks such as cropping and distortion due to dirt or human writing/marking are likely.
Oscar C. Au, Ming Sun Fu
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A New Development of Symmetric Key Cryptosystem
2008 IEEE International Conference on Communications, 2008Security issues have become a main concern modern life. A powerful cryptosystem has to be practical, secure and able to be implemented on different platforms. The goal of this paper is to develop a basis of cryptographic scheme which utilizes some advanced transform techniques. A symmetric cryptographic system is proposed based on Shannon's concepts of
Xiao Bo Yang, Said Boussakta
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Symmetric Threshold Multipath (STM): An online symmetric key management scheme
Information Sciences, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alireza T. Boloorchi +2 more
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