Decoding Running Key Ciphers.
ACL '12: Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics: Short Papers - Volume 2(2012)
摘要
There has been recent interest in the problem of decoding letter substitution ciphers using techniques inspired by natural language processing. We consider a different type of classical encoding scheme known as the running key cipher , and propose a search solution using Gibbs sampling with a word language model. We evaluate our method on synthetic cipher-texts of different lengths, and find that it outperforms previous work that employs Viterbi decoding with character-based models.
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关键词
Viterbi decoding,decoding letter substitution,different length,different type,natural language processing,word language model,character-based model,classical encoding scheme,key cipher,previous work
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