clsha1(1)

📦
version 3.4.9.6 · 2 versions
, in fedora 43, fedora 44

✨ NAME ✨

okay so bestie, say hi to clsha1 — the little Unix tool that's literally just here to hand you SHA1 hashes and look cute doing it 💅

🎀 SYNOPSIS 🎀

clsha1 [OPTION] [FILE]

🌸 DESCRIPTION 🌸

clsha1 is the friend who does the math for you 🧮✨ It calculates the SHA1 hash value of whatever you feed it — a file, or standard input — and then prints that hash value to standard output, either in hexadecimal (that's the default, no cap) or in base64 encoding. Also? The hash value is 160 bits long. That's the whole vibe. 💖

If you give it no FILE, or you hand it a -, it just reads from standard input. So it's giving very much "pipes are my bestie" energy 🫶

👑 OPTIONS 👑

  • --base64 | -b64 — prints the hash value base64 encoded 💜 Without this option, the hash value gets printed hexadecimal. That's it, that's the choice.
  • --help — prints a help text 🌈 (we love a helpful icon)
  • --version — prints the version of clsha1 ⭐

🦋 NOTES 🦋

Full documentation lives right here: <https://senderek.ie/cryptlib/tools> — go read it, it's giving informative ✨

This program depends on two packages: one providing the cryptlib shared object library, and the python3-bindings to that library. They're a package deal, fr fr — can't have one without the other 💀

You can download both packages in RPM or DEB format at <https://senderek.ie/cryptlib/> 🍓

🧚 FILES 🧚

clsha1 uses the cryptlib shared object library and its python3 bindings. Here's exactly where they hang out:

  • /lib64/libcl.so.3.4.9
  • /usr/lib/python3.1x/site-packages/cryptlib_py.so

Copyright © 2022 - 2026 Ralf Senderek. All rights reserved. 🔥

License BSD-3-Clause: <https://senderek.ie/cryptlib/bsd.html>.

This is free software: you are free to change and redistribute it. 💫

There is NO WARRANTY, to the extent permitted by law. Like, none at all, bestie — read the license, it's not playing 🙈

🌈 SEE ALSO 🌈

💅 AUTHORS 💅

  • clsha1 is written by Ralf Senderek <innovation@senderek.ie> 🌸
  • Cryptlib is written and maintained by Peter Gutmann <pgut001@cs.auckland.ac.nz> 🎀

💀 BUGS 💀

Of course there aren't any bugs 😭 — but if you do find any, please sent a report to innovation@senderek.ie. (Yes, "sent". We're keeping it exactly as written, that's the author's canon 🫶)

and that's the whole page, periodt ✨ This was Cryptlib Tools, February 2026, and you just read the clsha1(1) manual. Stay hashed, stay hydrated 💖🦋🌸

📦 where this page comes from