Using hash

PHP
1 
<?php
$crypted=crypt('myText');
?>

The code above produces crypted text.
But the code below doesn’t produces hased text.

<?php
$hashed=hash('myText');
?>

How to use hash?

2

Please see the manual page before using any PHP functions if you are not sure how to use them and what parameters they can have.
hash: - http://www.php.net/manual/en/function.hash.php
crypt: - http://www.php.net/manual/en/function.crypt.php

See how they are used in the examples (parameters required) there and use accordingly.

3 
hash('[COLOR="Red"]ripemd160[/COLOR]', 'The quick brown fox jumped over the lazy dog.');

Do you call ‘ripemd160’ a parameter?

4

As you can see in the manual that hash() function takes two required parameters and one optional. So you must give two parameters to get the desired value; first parameter is algorithm you want to use (see hash_algos() function for other algorithms you can use) as mentioned in the manual. And second parameter is your text. So your example should look like this:


$hash = hash('ripemd160', 'myText');
echo $hash;

You will see ‘0513a022887d52242b487ca5dd5ddbe3ba97af3e’ as output.

5

As I test it ‘ripemd160’ is fixed, and ‘myText’ is dynamic.

I am curious why ripemd160 can’t be dynamic.
I mean why “ripemd161” doesn’t work.

6

See the manual page for [fphp]hash[/fphp].

$algo = Name of selected hashing algorithm (i.e. “md5”, “sha256”, “haval160,4”, etc…)

You can find a list of the available hashing algorithms with [fphp]hash_algos[/fphp].

You can’t just ‘make stuff up’, there are rules you know. :wink:

7

I guess because there’s no algorithm called ‘ripemd161’. Or at least it isn’t available.

It’s like font names. Or telephone numbers :slight_smile:
You need to use an algorithm that exists. Like rajug already said, if you don’t want to use ripemd160, see hash_algos() function for other algorithms you can use

8

Maybe this will help clear things up. :slight_smile:


<?php
foreach(hash_algos() as $algo){
  printf(
    "(%s) - %s\
",
    $algo,
    hash($algo, 'AnthonySterling')
  );
}

/*
  (md2) - be820630d60c7bd62fb9912a687cab1f
  (md4) - 737222f2fe66751384c0f4a21d770929
  (md5) - e4821c8e1c125c813be2cfe890065bab
  (sha1) - b20dc6629d1b619c1dbd88fda0c07cea549bbfbc
  (sha224) - 8992034e7785dfa5c5de00b17d59ebc39627a11700f426d5e490edab
  (sha256) - 60faea7c70a5b220507d7db9e342c11364fe96fe0149d322ddd185f8796e4908
  (sha384) - da01760f557e232b2a855ccc00b66d1c55822a3267c9a71d0854198106e4026162799e72ededa3b3ccc7df37addf2f9f
  (sha512) - 200947a3dd106b377dfd82a80fc4db399d060024d0176d41996fa0146c00bb64677940ffdf87fa16b2ef2927cb97aa1726e6ac9ae5c95416c7a687833f7a6a3c
  (ripemd128) - bf22fcff2c923919475fb9a8ca822f37
  (ripemd160) - d27505bb60269dea5d8c80c015ea35e541c01f9a
  (ripemd256) - 9d92e7ae95fe8bfecc2439efb3628c4660407747d8bf29c392acde836e97e57c
  (ripemd320) - 076f301ff314e11a7841339c1f36d0a2872c5f867f09b54bf3335f3008a4c9f072a6f682ac7ced5d
  (whirlpool) - dbac7c925c334d4aadb55e8aa89c03a79fc1d0d52b462864dbb06ef2b118318d582bddb13eecfcdcefe22a3242f5d65351782b27051df3d5498520eb6d41741c
  (tiger128,3) - b4390131ba5a21882cad3bd9c3212ab8
  (tiger160,3) - b4390131ba5a21882cad3bd9c3212ab8b165da13
  (tiger192,3) - b4390131ba5a21882cad3bd9c3212ab8b165da134d626ba7
  (tiger128,4) - 2b39c0ef0d1bd80f2aa03ebb7e59a948
  (tiger160,4) - 2b39c0ef0d1bd80f2aa03ebb7e59a948e357ea5e
  (tiger192,4) - 2b39c0ef0d1bd80f2aa03ebb7e59a948e357ea5e9ff98bf4
  (snefru) - 4019c28fafa1a8a3fcfb9f26956c5ab9724f2ac5cfb96f70fc67c63eaef97ba1
  (snefru256) - 4019c28fafa1a8a3fcfb9f26956c5ab9724f2ac5cfb96f70fc67c63eaef97ba1
  (gost) - 051f7fccff4e93c71d71e8a6d5cca8626ff7f88a198e60e22a54e87ad7177944
  (adler32) - 3082062a
  (crc32) - 8a20c13b
  (crc32b) - e17f7111
  (salsa10) - 70bc195d78711b2fae0751e65c539cd0dc7dbf260ced7970eb8880fd0a3a6ee74345e7f575ebb9da5a3528cb04c3171275b47a4b6089e2f0b26e813c119ee6c2
  (salsa20) - 494c31bd46fc8b62a7ce8ac99fd6ba8ddc5f1a72e14c31b5e14f0eaba49c20eedfa293a234a4540976ecf9343b2122c5d862f3c5ae10de1b3f46f423a9e1f3ba
  (haval128,3) - ef03b82f4bb264877bb71fcacff4945b
  (haval160,3) - d5be682340c733905df48527ae4ab8af0be16be1
  (haval192,3) - 2fa19d5aae7136cc0e7a50f1e4ee517fa17c70acf61c1b55
  (haval224,3) - 616d3a98430ab51aeac08d35ad2ca462667749f16185ae0529ed8630
  (haval256,3) - 720a8129bda68cd3ecbdab122c1ef2e944d6af99190c7361de46a02f335e68b2
  (haval128,4) - 6f29f6623216f28bf7ce9690a6f100a8
  (haval160,4) - 7eac36fa242710ad672da40fe6c293bfeb5fc4ff
  (haval192,4) - f2743250e4eba3707ce36b4f3276e39484d505cb5fa92cba
  (haval224,4) - abd86e326761da4c226e41e59b7ab3e0b4dff3de92f9f1bd764ae10d
  (haval256,4) - acecf16a8252185c3e3b742e694d8a49571e2b33686f5400f188f105f6af582b
  (haval128,5) - a8b7209572b93035c99ddca05678f18d
  (haval160,5) - f904d217166501c80714c2465c09e4b412ee61ee
  (haval192,5) - f2f03219eefe1a7ad4cc6c17231899003692e6b094cff0c2
  (haval224,5) - c86c8476c122f4d36520657c91690bbe87c71e5fae072f7a66ef4882
  (haval256,5) - 379d64859d70e421f0bff7ff50f7b45dd96d0feb6b4d8f37015129761e843a24
*/
9

[fphp]hash_algos[/fphp]

There are 35 algos in the page.

The following question sounds like stupid, I like to ask it for confirmation.
Which is the most secure?

10

Have a read of this, there are some great points/observations made. :wink: