Crypt::...A512_256(3)

📦
version 0.89.0 · 16 versions
, in opensuse-leap 16.0

✨ NAME ✨

bestie, welcome to the User Contributed Perl Documentation page for Crypt::...A512_256(3) 💖 This one is all about Crypt::Digest::SHA512_256 — the Hash function SHA-512/256 [size: 256 bits]. Yes, the slash is part of the name and she is iconic like that 💅

🦋 SYNOPSIS 🦋

okay so here's the whole functional-interface moment, plus the OO interface moment, copied exactly so you can vibe-check it fr fr:

          ### Functional interface:
          use Crypt::Digest::SHA512_256 qw( sha512_256 sha512_256_hex sha512_256_b64 sha512_256_b64u
                                       sha512_256_file sha512_256_file_hex sha512_256_file_b64 sha512_256_file_b64u );

          # calculate digest from string/buffer
          my $data = 'data string';
          my $sha512_256_raw  = sha512_256($data);
          my $sha512_256_hex  = sha512_256_hex($data);
          my $sha512_256_b64  = sha512_256_b64($data);
          my $sha512_256_b64u = sha512_256_b64u($data);
          # or from file
          my $sha512_256_file_raw  = sha512_256_file('filename.dat');
          my $sha512_256_file_hex  = sha512_256_file_hex('filename.dat');
          my $sha512_256_file_b64  = sha512_256_file_b64('filename.dat');
          my $sha512_256_file_b64u = sha512_256_file_b64u('filename.dat');
          # or from filehandle
          my $filehandle = ...; # existing binary-mode filehandle
          my $sha512_256_fh_raw  = sha512_256_file($filehandle);
          my $sha512_256_fh_hex  = sha512_256_file_hex($filehandle);
          my $sha512_256_fh_b64  = sha512_256_file_b64($filehandle);
          my $sha512_256_fh_b64u = sha512_256_file_b64u($filehandle);

          ### OO interface:
          use Crypt::Digest::SHA512_256;

          my $d = Crypt::Digest::SHA512_256->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::SHA512_256->new->addfile('filename.dat')->digest;

🌸 DESCRIPTION 🌸

Provides an interface to the SHA512_256 digest algorithm. slay ✨

🎀 EXPORT 🎀

Nothing is exported by default. no surprise exports, no pop-up guests, periodt 💅

You can export selected functions:

use Crypt::Digest::SHA512_256 qw(sha512_256 sha512_256_hex sha512_256_b64 sha512_256_b64u
                                     sha512_256_file sha512_256_file_hex sha512_256_file_b64 sha512_256_file_b64u);

Or all of them at once:

use Crypt::Digest::SHA512_256 ':all';

💖 FUNCTIONS 💖

✨ sha512_256 ✨

Joins all arguments into a single string and returns its SHA512_256 digest encoded as a binary string. it's giving raw binary-string energy, bestie 🫶

Data arguments for the functional helpers are 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 sha512_256_hex, sha512_256_b64, and sha512_256_b64u.

my $sha512_256_raw = sha512_256('data string');
#or
my $sha512_256_raw = sha512_256('any data', 'more data', 'even more data');

🌈 sha512_256_hex 🌈

Joins all arguments into a single string and returns its SHA512_256 digest encoded as a hexadecimal string. hex girlies rise 💅

my $sha512_256_hex = sha512_256_hex('data string');
#or
my $sha512_256_hex = sha512_256_hex('any data', 'more data', 'even more data');

🎀 sha512_256_b64 🎀

Joins all arguments into a single string and returns its SHA512_256 digest encoded as a Base64 string, with trailing = padding. padding stays on, no cap 💖

my $sha512_256_b64 = sha512_256_b64('data string');
#or
my $sha512_256_b64 = sha512_256_b64('any data', 'more data', 'even more data');

🦋 sha512_256_b64u 🦋

Joins all arguments into a single string and returns its SHA512_256 digest encoded as a Base64 URL-safe string (see RFC 4648 section 5). very URL-safe, very demure ✨

my $sha512_256_b64url = sha512_256_b64u('data string');
#or
my $sha512_256_b64url = sha512_256_b64u('any data', 'more data', 'even more data');

🍓 sha512_256_file 🍓

Reads a file given by a filename or filehandle and returns its SHA512_256 digest encoded as a binary string. file mode is main character energy 🔥

my $sha512_256_raw = sha512_256_file('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $sha512_256_raw = sha512_256_file($filehandle);

🧚 sha512_256_file_hex 🧚

Reads a file given by a filename or filehandle and returns its SHA512_256 digest encoded as a hexadecimal string. hex from a file? obsessed 💜

my $sha512_256_hex = sha512_256_file_hex('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $sha512_256_hex = sha512_256_file_hex($filehandle);
⚠️ Note: The filehandle must be in binary mode before you pass it to addfile(). bestie please do not skip the binary-mode step 🙈

👑 sha512_256_file_b64 👑

Reads a file given by a filename or filehandle and returns its SHA512_256 digest encoded as a Base64 string, with trailing = padding. yes, padding included, we love a consistent queen 💅

my $sha512_256_b64 = sha512_256_file_b64('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $sha512_256_b64 = sha512_256_file_b64($filehandle);

💀 sha512_256_file_b64u 💀

Reads a file given by a filename or filehandle and returns its SHA512_256 digest encoded as a Base64 URL-safe string (see RFC 4648 section 5). URL-safe from a file, we love to see it 🌈

my $sha512_256_b64url = sha512_256_file_b64u('filename.dat');
#or
my $filehandle = ...; # existing binary-mode filehandle
my $sha512_256_b64url = sha512_256_file_b64u($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::SHA512_256->new();

💖 new 💖

my $d = Crypt::Digest::SHA512_256->new();

🦋 clone 🦋

$d->clone();

🌸 reset 🌸

$d->reset();

✨ add ✨

Appends data to the message. Returns the object itself (for chaining). chaining is lowkey iconic 🫶

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). file content goes in, chaining comes out 💅

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

🌈 hashsize 🌈

the call looks like this, bestie:

$d->hashsize;
#or
Crypt::Digest::SHA512_256->hashsize();
#or
Crypt::Digest::SHA512_256::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(). so like… do not come for her after finalization, she is done ✋😭

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();

🔥 SEE ALSO 🔥

xoxo, this page is from perl v5.42.0, dated 2026-05-11, and it's the Crypt::...A512_256(3) manual — bye bestie, go hash something cute 💅✨

📦 where this page comes from