This image contains its own MD5 checksum — and it’s kind of a big deal



Generating checksums—cryptographic hashes such as MD5 or SHA-256 functions for files is hardly anything new and one of the most efficient means to ascertain the integrity of a file, or to check if two files are identical.

However, generating a file containing its own checksum as part of its content is a task quite daunting, if not seemingly impossible due to a paradox involved in the process.

That has not stopped a researcher from creating a PNG image that contains the file’s MD5 checksum, visible within the matrix of pixels that make up the image.

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