Secret Communication Techniques
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This chapter introduces the reader to cryptography, steganography, watermarking, and quality parameters of image steganography techniques. Cryptography is a technique for secret communication. Steganography is a technique for secret and unnoticeable communication. The watermarking techniques hide watermarks inside the digital media. There are four types of steganography techniques: (1) image steganography, (2) audio steganography, (3) video steganography, and (4) text steganography. The quality of image steganographic algorithms can be measured by three parameters like (1) hiding capacity, (2) distortion measure, and (3) security check.
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2016 ◽
Vol 6
(6)
◽
pp. 2735
◽
Keyword(s):
2016 ◽
Vol 6
(6)
◽
pp. 2735
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2019 ◽
Vol 7
(3)
◽
pp. 37-43
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