Steganography is the art of hiding messages in a human-readable medium, such as image files, videos, texts, and so on. The changes should be unnoticeable by sight, to mask the message behind the hosted file. The two types of steganography are as follows:
- Text steganography:
- Line-shift coding
- Word-shift coding
- Feature coding
- Image steganography:
- Least significant bit (LSB): Hiding 1 bit of data in every pixel of 8-bit images and 3 bits of data in every pixel of 24-bit images. You can use steglsb to perform LSB steganography:
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- Spread spectrum image steganography (SSIS)
- F5 algorithm
