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Portable, endian-proof, single-file, single-function sha256 implementation in C
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This is a header-only library, as such most of its functional documentation is contained within the "header section" of the source code in the form of comments. It is highly recommended that you read said documentation before using this library.


The lonesha256 library provides portable sha256 hashing in a single function, its features include:

  • No hard dependencies besides the standard library, making it fully portable
  • Avoids endianness issues by relying entirely on endian-agnostic operations
  • Simple hashing in a single function without any convoluted initialization


You are not required to give attribution when using this library. If you want to give attribution anyway, either link to this repository, my website, or credit me as BareRose. If you want to support me financially, consider giving to my Patreon.


Licensed under CC0 aka the most lawyer-friendly way of spelling "public domain".

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