Crypt::...ccak224(3)

🌈 NAME 🌈

✨ bestie, welcome to the Crypt::...ccak224(3) page — User Contributed Perl Documentation — we're about to make Keccak-224 make sense 💅

Crypt::Digest::Keccak224 — Hash function Keccak-224 [size: 224 bits]

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✨ SYNOPSIS ✨

### Functional interface:
use Crypt::Digest::Keccak224 qw( keccak224 keccak224_hex keccak224_b64 keccak224_b64u
                             keccak224_file keccak224_file_hex keccak224_file_b64 keccak224_file_b64u );

# calculate digest from string/buffer
my $data = 'data string';
my $keccak224_raw  = keccak224($data);
my $keccak224_hex  = keccak224_hex($data);
my $keccak224_b64  = keccak224_b64($data);
my $keccak224_b64u = keccak224_b64u($data);
# or from file
my $keccak224_file_raw  = keccak224_file('filename.dat');
my $keccak224_file_hex  = keccak224_file_hex('filename.dat');
my $keccak224_file_b64  = keccak224_file_b64('filename.dat');
my $keccak224_file_b64u = keccak224_file_b64u('filename.dat');
# or from filehandle
my $filehandle = ...; # existing binary-mode filehandle
my $keccak224_fh_raw  = keccak224_file($filehandle);
my $keccak224_fh_hex  = keccak224_file_hex($filehandle);
my $keccak224_fh_b64  = keccak224_file_b64($filehandle);
my $keccak224_fh_b64u = keccak224_file_b64u($filehandle);

### OO interface:
use Crypt::Digest::Keccak224;

my $d = Crypt::Digest::Keccak224->new;
$d->add('any data');
my $result_raw  = $d->digest;     # raw bytes
my $result_hex  = $d->hexdigest;  # hexadecimal form
my $result_b64  = $d->b64digest;  # Base64 form
my $result_b64u = $d->b64udigest; # Base64 URL-safe form

# or hash a file instead
my $file_result_raw = Crypt::Digest::Keccak224->new->addfile('filename.dat')->digest;

---

💖 DESCRIPTION 💖

This module gives you an interface to the Keccak224 digest algorithm. That's the whole vibe 🫶

---

🎀 EXPORT 🎀

Nothing is exported by default. Zero. Nada. 🚫

You can export selected functions:

use Crypt::Digest::Keccak224 qw(keccak224 keccak224_hex keccak224_b64 keccak224_b64u
                                     keccak224_file keccak224_file_hex keccak224_file_b64 keccak224_file_b64u);

Or all of them at once:

use Crypt::Digest::Keccak224 ':all';

---

🧚 FUNCTIONS 🧚

keccak224

Joins all the arguments into one single string and returns its Keccak224 digest encoded as a binary string. Slay ✨

Data arguments for the functional helpers get converted to byte strings using Perl's usual scalar stringification. Defined scalars — including numbers and string-overloaded objects — are accepted. undef is treated as an empty string and may emit Perl's usual uninitialized value warning. The same rules apply to keccak224_hex, keccak224_b64, and keccak224_b64u.

my $keccak224_raw = keccak224('data string');
#or
my $keccak224_raw = keccak224('any data', 'more data', 'even more data');

keccak224_hex

Joins all the arguments into one single string and returns its Keccak224 digest encoded as a hexadecimal string.

my $keccak224_hex = keccak224_hex('data string');
#or
my $keccak224_hex = keccak224_hex('any data', 'more data', 'even more data');

keccak224_b64

Joins all the arguments into one single string and returns its Keccak224 digest encoded as a Base64 string, with trailing '=' padding.

my $keccak224_b64 = keccak224_b64('data string');
#or
my $keccak224_b64 = keccak224_b64('any data', 'more data', 'even more data');

keccak224_b64u

Joins all the arguments into one single string and returns its Keccak224 digest encoded as a Base64 URL-safe string (see RFC 4648 section 5).

my $keccak224_b64url = keccak224_b64u('data string');
#or
my $keccak224_b64url = keccak224_b64u('any data', 'more data', 'even more data');

keccak224_file

Reads a file given by a filename or filehandle and returns its Keccak224 digest encoded as a binary string.

my $keccak224_raw = keccak224_file('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $keccak224_raw = keccak224_file($filehandle);

keccak224_file_hex

Reads a file given by a filename or filehandle and returns its Keccak224 digest encoded as a hexadecimal string.

my $keccak224_hex = keccak224_file_hex('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $keccak224_hex = keccak224_file_hex($filehandle);

🚨 Note: The filehandle must be in binary mode before you pass it to addfile().

keccak224_file_b64

Reads a file given by a filename or filehandle and returns its Keccak224 digest encoded as a Base64 string, with trailing '=' padding.

my $keccak224_b64 = keccak224_file_b64('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $keccak224_b64 = keccak224_file_b64($filehandle);

keccak224_file_b64u

Reads a file given by a filename or filehandle and returns its Keccak224 digest encoded as a Base64 URL-safe string (see RFC 4648 section 5).

my $keccak224_b64url = keccak224_file_b64u('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $keccak224_b64url = keccak224_file_b64u($filehandle);

---

💅 METHODS 💅

The OO interface provides the same set of functions as Crypt::Digest. Unless noted otherwise, assume $d is an existing digest object created via new, for example:

my $d = Crypt::Digest::Keccak224->new();

new

Fresh digest object energy:

my $d = Crypt::Digest::Keccak224->new();

clone

Clone time:

$d->clone();

reset

Reset button:

$d->reset();

add

Appends data to the message. Returns the object itself (for chaining).

Each argument is converted to bytes using Perl's usual scalar stringification. Defined scalars — including numbers and string-overloaded objects — are accepted. undef is treated as an empty string and may emit Perl's usual uninitialized value warning.

$d->add('any data');
#or
$d->add('any data', 'more data', 'even more data');

addfile

Reads the file content and appends it to the message. Returns the object itself (for chaining).

$d->addfile('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
$d->addfile($filehandle);

hashsize

Need the hash size? Here are the three ways to call it:

$d->hashsize;
#or
Crypt::Digest::Keccak224->hashsize();
#or
Crypt::Digest::Keccak224::hashsize();

digest

Returns the binary digest (raw bytes). The first call finalizes the digest object. Any later add(), addfile(), digest(), hexdigest(), b64digest(), or b64udigest() call will fail until you call reset(). 🚨

my $result_raw = $d->digest();

hexdigest

Returns the digest encoded as a lowercase hexadecimal string. Like digest(), the first call finalizes the digest object.

my $result_hex = $d->hexdigest();

b64digest

Returns the digest encoded as a Base64 string with trailing "=" padding. Like digest(), the first call finalizes the digest object.

my $result_b64 = $d->b64digest();

b64udigest

Returns the digest encoded as a Base64 URL-safe string (no trailing "="). Like digest(), the first call finalizes the digest object.

my $result_b64url = $d->b64udigest();

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🦋 SEE ALSO 🦋

• CryptX, Crypt::Digest
• <https://keccak.team/index.html>

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okay that's the whole page, bestie 💖 source/version/date check: perl v5.42.0, 2026-05-11, footer title Crypt::...ccak224(3). bye and stay iconic 🎀✨