Improved Text Watermarking Technique
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Abstract
Text Watermarking is the technique which is used for copyright protection of text documents these days. Many techniques have been used in context of security till now such as steganography, cryptography, hash function and access control methods. Watermarking is found to be the easiest and efficient technique for many languages like English, Chinese, Turkish and many more. In the proposed technique the idea presented by researchers for English language using natural language watermarks is enhanced by making the technique more robust against tampering attacks. The aim of the proposed technique is to create unique watermarks by senders so that attacker is unable to interpret it and the information can be transferred safely. So, watermark key can be created using combination of count of nouns, pronouns, model verbs and conjunctions along with author name. Moreover, double encryption is applied using RSA and AES algorithms to make the watermark unpredictable for attackers and secured.
Keywords: Watermarks; Encryption; RSA; AES; XOR; Key; Tampering Attack
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