Security Improvement of Common-Key Cryptographic Communication by Mixture of Fake Plain-Texts

Autor:	Masayoshi Hayashi, Hiroaki Higaki
Rok vydání:	2019
Předmět:	Cryptogram business.industry Computer science ComputingMilieux_LEGALASPECTSOFCOMPUTING Plaintext Cryptography Data_CODINGANDINFORMATIONTHEORY Encryption Computer security computer.software_genre Brute-force attack ComputingMilieux_COMPUTERSANDSOCIETY Cryptosystem Common key business computer
Zdroj:	Communications in Computer and Information Science ISBN: 9789811358258 SSCC
DOI:	10.1007/978-981-13-5826-5_28
Popis:	One of the fundamental methods for eavesdroppers to achieve a plaintext from a cryptogram is the brute force attack where possible candidates of decryption keys are exhaustively applied to the decryption algorithm. Here the only reason why the eavesdroppers believe to find the common-key and to achieve the plaintext is that the output of the decryption algorithm is contextually acceptable. According to this fact, this paper proposes a novel common-key cryptosystem where fake plaintexts which are also contextually acceptable are mixed into a cryptogram with the legal plaintext. If an eavesdropper applies a fake common-key to the decryption algorithm, it outputs the fake plaintexts which the eavesdroppers might believe legal. This paper also proposes concrete encryption/decryption algorithm which can be combined with any conventional common-key cryptosystem. Results of simulation experiments show the proposed method reduces probability for eavesdroppers to get legal plaintexts.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::668bb7e9c4853e0329a2d0ae6c719c0d https://doi.org/10.1007/978-981-13-5826-5_28 Zobrazit plný text záznamu