Hiding In Audio
Hiding In Audio
Steganography is the practice of hiding secret information inside ordinary files (like text inside an image or a message inside audio) so it goes undetected.
I built a small tool that does exactly this. It’s built in standard Javascript. It encodes a message into a WAV file, then you can share it and only someone with the decoder knows it’s there.
It uses LSB steganography: each character is converted to binary, then written into the least significant bit of each audio sample. There’s a change of only 0.003% per sample. The change is so tiny that your ears can’t hear it.