SHA3SUM(1p)

📦
version 1.05 · 7 versions
, in ubuntu stonking

🌸 NAME 🌸

okay so bestie, meet sha3sum — Print or Check SHA-3 Checksums 💖

(this is the 1p page, aka the User Contributed Perl Documentation shelf, so yes it's a Perl script, and yes it still eats 💅)

📖 SYNOPSIS 📖

 Usage: sha3sum [OPTION]... [FILE]...
 Print or check SHA-3 checksums.
 With no FILE, or when FILE is -, read standard input.

   -a, --algorithm   224 (default), 256, 384, 512, 128000, 256000
   -b, --binary      read in binary mode
   -c, --check       read SHA-3 sums from the FILEs and check them
       --tag         create a BSD-style checksum
   -t, --text        read in text mode (default)
   -U, --UNIVERSAL   read in Universal Newlines mode
                         produces same digest on Windows/Unix/Mac
   -0, --01          read in BITS mode
                         ASCII '0' interpreted as 0-bit,
                         ASCII '1' interpreted as 1-bit,
                         all other characters ignored

 The following five options are useful only when verifying checksums:
       --ignore-missing  don't fail or report status for missing files
   -q, --quiet           don't print OK for each successfully verified file
   -s, --status          don't output anything, status code shows success
       --strict          exit non-zero for improperly formatted checksum lines
   -w, --warn            warn about improperly formatted checksum lines

   -h, --help        display this help and exit
   -v, --version     output version information and exit

🎀 the options, one by one, no skips 🎀

  • -a, --algorithm — which SHA-3 flavour you want: 224 (the default, she's the main character), 256, 384, 512, 128000, or 256000 ✨
  • -b, --binary — read stuff in binary mode
  • -c, --check — read SHA-3 sums out of the FILEs and actually check them ✅
  • --tag — make a BSD-style checksum 🏷️
  • -t, --text — read in text mode (this is the default, lowkey the chill one)
  • -U, --UNIVERSAL — read in Universal Newlines mode, which produces the same digest on Windows, Unix and Mac (cross-platform slay 🌍)
  • -0, --01 — read in BITS mode: ASCII 0 gets interpreted as a 0-bit, ASCII 1 as a 1-bit, and literally every other character is ignored 🫥

the next five are only useful when you're verifying checksums, bestie, don't come for me:

  • --ignore-missing — don't fail and don't report status for files that aren't there 🫶
  • -q, --quiet — don't print OK for every single file that verified successfully
  • -s, --status — print absolutely nothing, and let the status code do all the talking
  • --strict — exit non-zero when checksum lines are improperly formatted 😤
  • -w, --warn — warn about improperly formatted checksum lines

and the two helpers:

  • -h, --help — display this help and exit
  • -v, --version — output version information and exit

okay, the deets you actually need:

The sums are computed as described in the FIPS 202 SHA-3 submission. 📜

When checking, the input should be a former output of this program.

The default mode is to print a line with a checksum, a character indicating type (* for binary, for text, U for UNIVERSAL, ^ for BITS), and a name for each FILE.

The line starts with a \ character if the FILE name contains either newlines or backslashes, which get replaced by the two-character sequences \n and \\ respectively. 🌈

found a bug? Report sha3sum bugs to mshelor@cpan.org 🐛

🦋 DESCRIPTION 🦋

Running sha3sum is often the quickest way to compute SHA-3 message digests, fr fr. You simply feed data to the script through files or standard input, and then collect the results from standard output. That's it. Obsessed.

The following command shows how to compute digests for typical inputs such as the NIST test vector "abc":

perl -e "print qq(abc)" | sha3sum

Or, if you want to use SHA3-256 instead of the default SHA3-224, simply say:

perl -e "print qq(abc)" | sha3sum -a 256

And here's the part that's giving icon energy: unlike many other digest computation programs, sha3sum implements the full SHA-3 standard by allowing partial-byte inputs, which you can recognize through the BITS option (-0). The following example computes the SHA3-384 digest of the 7-bit message 0001100:

perl -e "print qq(0001100)" | sha3sum -0 -a 384

not me flexing 7-bit inputs like it's nothing 💅👑

👑 AUTHOR 👑

Copyright (C) 2012-2022 Mark Shelor <mshelor@cpan.org>. 🫡 ty king for your service

🔥 SEE ALSO 🔥

sha3sum is implemented using the Perl module Digest::SHA3. iykyk 🌟

and that's the whole page, bestie 💜 this was perl v5.42.3, dated 2026-08-19, and it's the SHA3SUM(1p) girlie. go check some checksums, periodt 🎀✨

📦 where this page comes from