oxyopia *\ˌäksēˈōpēə* — Unusual acuteness of sight
This utility will allow you to hide and reveal things inside/from images using the least significant bit method.
npm i -g oxyo
oxyo -c <carryFile> -o <outputFile> -s [secretFile] -p [password]
Either encode a secret file into an output file based on the carrier image or decode a previously encoded file into another. Not providing a secret file implies that the program will attempt a decode of the carrier image into the output. You can also provide a password for increased security.
For encoding, the carry should be either a jpg
or png
, and the output needs
to be a png
.
When decoding, no need to specify the output file extension, it will be automatically added.
oxyo -c newyork.png -s secretfile.txt -o encoded.png
Will produce an encoded.png
image that will look like newyork.png
when opened, but contains the secretfile.txt
data.
The secret can be anything.
To decode it, simply pass the encoded.png
file as the carry, and provide a filename without extension as the output.
oxyo -c encoded.png -o output
1 bit | 6 bytes | 8 bytes | n bytes |
---|---|---|---|
hasPassword | extension | length | data |