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: This paper proposes an extension of a public-key cryptosystem to support a private key cryptos system which is a combination of Advanced Encryption Standard and ECC, and proposes a hybrid encryption scheme to increase competency and to minimize drawbacks.
52 citations
Patent•
07 Dec 2007TL;DR: In this paper, a method of encrypting a message for message integrity is provided, in which a random number is generated, a first ciphertext is generated by encrypting the message by using the generated random number, a hash value of the first ciphers is calculated, an encryption key is generated using the hash value and a shared key, and the first and second ciphertexts are combined.
Abstract: A method of encrypting a message for message integrity is provided. In the method, a random number is generated, a first ciphertext is generated by encrypting the message by using the generated random number, a hash value of the first ciphertext is calculated, an encryption key is generated by using the hash value of the first ciphertext and a shared key, a second ciphertext is generated by encrypting the random number by using the encryption key, and the first and second ciphertexts are combined.
52 citations
01 Jan 2013
TL;DR: The PSNR comparison of proposed technique with the existing partial image encryption techniques shows that proposed technique gives better security than the existing techniques.
Abstract: The traffic of digital images and video has grown rapidly in the internet. Security becomes important for several applications like military image database, confidential video conferencing, medical images, etc. Several techniques have been developed for textual data but are not appropriate for images and video with huge amount of file size. In traditional image and video content protection schemes, called fully layered, the whole content is first compressed. Then, the compressed bitstream is entirely encrypted using a standard cipher. The specific characteristics of this kind of data make standard encryption algorithms inadequate. Partial encryption is a recent approach to reduce the encryption time of images in distributed network. Partial image encryption is used to reduce the amount of data to encrypt while achieving a sufficient and inexpensive security. The proposed approach involves two ways, the first is by pixel value manipulation and other second is by using SCAN mapping method. The PSNR comparison of proposed technique with the existing partial image encryption techniques shows that proposed technique gives better security than the existing techniques.
51 citations
TL;DR: Several weaknesses of the new cryptosystem are pointed out and four successful cryptanalytic attacks are described.
51 citations
TL;DR: Numerical simulations show that the new chaotic cryptosystem is practical whenever efficiency, ciphertext length or security is concerned, and a noise-like variable is utilized to govern the encryption and decryption processes.
Abstract: Based on the study of some previously proposed chaotic encryption algorithms, we found that it is dangerous to mix chaotic state or iteration number of the chaotic system with ciphertext. In this paper, a new chaotic cryptosystem is proposed. Instead of simply mixing the chaotic signal of the proposed chaotic cryptosystem with the ciphertext, a noise-like variable is utilized to govern the encryption and decryption processes. This adds statistical sense to the new cryptosystem. Numerical simulations show that the new cryptosystem is practical whenever efficiency, ciphertext length or security is concerned.
51 citations