Cryptanalysis and improvement of a block cryptographic scheme based on logistic map
Through analyzed of an improved chaotic block cryptographic scheme, it was found that this scheme behaves as a stream cipher indeed and generated keystream is independent with plaintext. By means of chosen plaintext attack, the keystream used can easily be recovered with little computing. The algori...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2008-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74652694/ |
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| Summary: | Through analyzed of an improved chaotic block cryptographic scheme, it was found that this scheme behaves as a stream cipher indeed and generated keystream is independent with plaintext. By means of chosen plaintext attack, the keystream used can easily be recovered with little computing. The algorithm a chosen plaintext attack was proposed and validated by experiment. In order to avoid the flaw, a remedy which makes keystream dependent with plaintext though ciphertext feedback was suggested while keeping all the merits of the original cryptosystem. |
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| ISSN: | 1000-436X |