DocumentCode :
2705268
Title :
Text Information Hiding Based on Part of Speech Grammar
Author :
Zuxu, Dai ; Fan, Hong ; Muxiang, Yang ; Guohua, Cui
Author_Institution :
Huazhong Univ. of Sci. & Technol., Wuhan
fYear :
2007
fDate :
15-19 Dec. 2007
Firstpage :
632
Lastpage :
635
Abstract :
Method for text information hiding based on part of speech (PoS) grammar is proposed. A context free PoS grammar generates PoS strings, which are patterns of natural language sentences. Taking PoS strings as a transform domain of natural language, the method maps both secret message and cover text to the domain, then maps each PoS string to a number where sentence appears in the cover text by string matching, and sequence of the numbers is the secret key. Using the secret key, receiver extracts the secret message by syntactic analysis. Further more, a formula computing the capacity of hidden information is given. This method does not require any modification of text, meanwhile, it is a sound solution of the problem cover text is syntactic but not semantic that Wayner ´s scheme encountered.
Keywords :
cryptography; data encapsulation; grammars; natural language processing; string matching; text analysis; cover text mapping; natural language sentences; part of speech grammar; secret key; secret message mapping; string matching; text information hiding; Computational intelligence; Computer science; Computer security; Convergence; Copyright protection; Data mining; Information security; Natural languages; Production; Speech;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computational Intelligence and Security Workshops, 2007. CISW 2007. International Conference on
Conference_Location :
Heilongjiang
Print_ISBN :
978-0-7695-3073-4
Type :
conf
DOI :
10.1109/CISW.2007.4425575
Filename :
4425575
Link To Document :
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