PHP SHA3 functionality

Question

Is there a framework or function that allows me to use SHA3-512? I don't want a extension like Strawbrary

@RobW SHA is a hashing algorithm, not encryption, and necessity of security depends on the task. — Glitch Desire, Jun 28 '13 at 16:01
Something in pure PHP sounds like it would be pretty slow. Did you really need SHA3? — Ry-, Nov 07 '13 at 04:52

score 16 · Answer 1 · answered Jun 05 '17 at 18:33

16

Yes sure simply you can use hash function in php

<?php
echo hash('sha3-512' , 'String you want to hash');

answered Jun 05 '17 at 18:33

Mohammad Istanboli

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`sha3-512` does not exist in PHP. https://3v4l.org/kR8UJ It seems only HHVM has it. – Brad Jan 08 '18 at 06:00
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@Brad running `hash_algos()` on php7.2 shows that it 'sha3-384' does indeed exist – Brian Leishman Feb 13 '18 at 16:51
9

sha3-512 is available in php 7.1.0+ – Johannes Oct 30 '18 at 23:13

score 15 · Accepted Answer · edited Feb 15 '16 at 06:10

15

It's possible.

Maybe too late, but I've worked on a pure-PHP implementation here:

SHA3-224/256/384/512
SHAKE128/256 (arbitrary output size)
LGPL 3+
Works in PHP 5.2+ (considerably slower on older PHP)
No extensions required.
Moderately well tested.
Based on the (public domain) reference implementation in C.
Arbitrary input size.

It is a simple and fast implementation in PHP (which means far slower than C). Since this is purely "CPU-bound", PHP 7.0 runs 4x faster than PHP 5.6. (55kB/s here)

Fine with a small input. Correctly handles a huge input, just hogs CPU for minutes.

I hope it helps.

edited Feb 15 '16 at 06:10

Michael

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answered Feb 15 '16 at 05:18

nord-stream

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I think you should watch out with implementing this yourselves for security reasons. Correctly implementing a hashing algorithm is just as important as designing an algorithm. Also consider that the reference implementation is not necessarily secure: they don't often consider timing attacks. Anyway, PHP is not the language to implement these cryptographic primitives. – user23127 Jun 08 '17 at 16:27

manno · Answer 3 · 2020-01-13T04:32:54.560

7

For those coming to this later (after this post) PHP 7.1.0 has support for SHA3-512.

Per the PHP Manual (http://php.net/manual/en/function.hash-algos.php) the hash_algos() function will output your system's available hash algorithms. The following code will output your system's available hash algorithms:

<?php
    echo "<pre>";
    print_r (hash_algos());
    echo "</pre>";
?>

My output looks something like this:

Array
(
    [0] => md2
    [1] => md4
    [2] => md5
    ...
)

edited Jan 13 '20 at 04:32

answered Jun 08 '18 at 14:11

manno

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Please don't post links as answer, but explain the content of the link. What if the page is moved and someone is looking for that help ? – Cid Jun 08 '18 at 14:31
Thank you for the style guideline. I have updated my answer to address them, and I'll adhere to it going forward. – manno Jan 13 '20 at 04:34
Thanks...please upvote this answer for the future developer that will visit this page. – Syamsoul Azrien Apr 22 '20 at 07:25

score -5 · Answer 4 · answered Feb 26 '14 at 21:18

-5

PHP 5.3.2 added SHA-256 and SHA-512 to the crypt() function. This might be somewhat similar to what your looking for

http://us3.php.net/crypt

answered Feb 26 '14 at 21:18

Lionel Morrison

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Actually `password_hash()` is more secured than `crypt()`. I use password_hash with a strong salt to generate strong SHA-256 hashes. – Basit May 09 '14 at 07:28
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Basit Saeed, why? There's no reason to think so. – Lodewijk Aug 01 '14 at 23:58
@Basit-saeed - Your both right. password_hash() is more secure than crypt() but password_hash() is also a wrapper for crypt(). – Lionel Morrison Aug 12 '14 at 19:59

PHP SHA3 functionality

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