Topic
Plaintext-aware encryption
About: Plaintext-aware encryption is a research topic. Over the lifetime, 1980 publications have been published within this topic receiving 101775 citations. The topic is also known as: Plaintext awareness.
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TL;DR: Boneh and Franklin this paper presented a fully secure identity based encryption scheme whose proof of security does not rely on the random oracle heuristic. Security is based on the Decision Bilinear Diffie-Hellman assumption.
Abstract: We present a fully secure Identity Based Encryption scheme whose proof of security does not rely on the random oracle heuristic. Security is based on the Decision Bilinear Diffie-Hellman assumption. This solves an open problem posed by Boneh and Franklin in 2001.
59 citations
TL;DR: A cryptanalysis of an image encryption scheme recently proposed by Chun-Yan Song, Yu-Long Qiao, and Xing-Zhou Zhang is described and it is proved that the studied cryptosystem is not sufficiently secure against chosen plaintext attack.
Abstract: In this paper, we describe a cryptanalysis of image encryption scheme recently proposed by Chun-Yan Song, Yu-Long Qiao, and Xing-Zhou Zhang. The scheme is based on a spatiotemporal chaos with a dynamic keystream generator, and its security is claimed to rely in utilized the plainimage in the keystream generation process to obtain a different keystream for every plainimage/cipherimage pair. However, two flaws are investigated and prove that the security of the proposal against chosen plaintext attack is groundless. Simulations conducted demonstrate that the plainimage can be recovered under partial attack with an acceptable perceptual quality. Moreover, a total break is possible, but a large number of plain-image/cipher-image pairs is needed. HighlightsA cryptanalysis of an image encryption scheme based on spatiotemporal chaos is presented.We gave a complete and partial break of the cryptosystem under study.We prove that the studied cryptosystem is not sufficiently secure against chosen plaintext attack.Results suggest that a partial attach needs smaller number of plain/ciphered images with acceptable perceptual qualities.
59 citations
TL;DR: A new image encryption algorithm based on chaos with the PWL memristor in Chua's circuit that includes two main operations of image scrambling and pixel replacement and has high-level security.
Abstract: An image encryption algorithm based on the chaotic system has been increasingly used, but the disadvantages of small key space, weak security in low dimensional chaotic cryptosystems, simple chaotic system, and inconvenient for hardware implementation, are obvious. This paper presents a new image encryption algorithm based on chaos with the PWL memristor in Chua’s circuit. This encryption algorithm includes two main operations of image scrambling and pixel replacement. Simulations show that the key space is large, and the attacker cannot decrypt an encrypted image without the correct key. The encryption algorithm has high-level security.
59 citations
01 Jan 1983
TL;DR: This note describes five regular properties of the ‘Data Encryption Standard’ or DES, two of which have been described elsewhere and are included for completeness.
Abstract: A cipher function y = E(k,x) should appear to be a random function of both the key k and the plaintext x Any regular behaviour is of interest to the users In the extreme case regular properties might point to a weakness of the cipher Precautions are needed in the use of a cipher that has regular features This note describes five regular properties of the ‘Data Encryption Standard’ or DES, two of which have been described elsewhere, are included for completeness
59 citations
02 Oct 2003
TL;DR: It is found that encrypting 20% of the visual data is sufficient to provide a high level of confidentiality and provides security against replacement attacks, which is discussed at length.
Abstract: In this paper, we propose partial encryption of JPEG2000 coded image data using an AES symmetric block cipher. We find that encrypting 20% of the visual data is sufficient to provide a high level of confidentiality. This percentage of encryption also provides security against replacement attacks, which is discussed at length.
58 citations