Abstract
From centuries, information security has been an attractive topic for security officials, intruders, hackers and other communication sectors throughout the world. Cryptography and steganography are widely practiced for secure communication over the internet. In steganography, data hiding capacity has been a great challenge for the research community and security officials. In this research, a novel algorithm is elaborated to conceal secret data with higher cover text capacity by using three different unicode characters such as zero width joiner, zero width non-joiner and zero width character. English text is taken as a message carrier. Before embedding a secret message into cover text, one's complement is applied on binary value of specific characters in secret message. Furthermore, 'Steger' is developed for the practical implementation of designed algorithm. The results revealed that newly designed algorithm reported higher data hiding capacity with security and size efficiency. This is an astonishing increase in data hiding capacity of carrier text. The unicode approach was efficiently and effectively used to reduce the attention of intruders.
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