How do I perform SHA-2 family hashing in my PHP application?

Answer

Option 1: Upgrade to PHP >= 5.1.2. You can use hash() to generate a hash value, hash_algos() will return an array of supported hashing algorithms. See:Upgrade to PHP >= 5.1.2. You can use hash() to generate a hash value, hash_algos() will return an array of supported hashing algorithms. See:
Example PHP5 Code

$phrase = “Hello World”;
$sha1a =  base64_encode(sha1($phrase));
$sha1b =  hash(’sha1′,$phrase);
$sha256= hash(’sha256′,$phrase);
$sha384= hash(’sha384′,$phrase);  $sha512= hash(’sha512′,$phrase); echo (“SHA1..:” . $sha1a . “\n”);
echo (“SHA1..:” . $sha1b . “\n”);
echo (“SHA256:” . $sha256 . “\n”);
echo (“SHA384:” . $sha384 . “\n”);  echo (“SHA512:” . $sha512 . “\n”); 

Option 1: Download and install the mhash and php-mhash RPMs on your Fedora, RedHat Enterprise Linux, or Centos machine. You can visit http://phprpms.sourceforge.net/mhash to determine the correct RPMs to grab and install.

rpm -ivh http://…/mhash-x.x.x-x.rpm
rpm -ivh http://…/php-mhash-x.x.x-x.rpm

…or grab and install the source code from http://mhash.sourceforge.net/.

$phrase = “Hello World”;
$sha1a =  base64_encode(sha1($phrase));
$sha1b =  base64_encode(bin2hex(mhash(MHASH_SHA1,$phrase)));
$sha256= base64_encode(bin2hex(mhash(MHASH_SHA256,$phrase)));
$sha384= base64_encode(bin2hex(mhash(MHASH_SHA384,$phrase))); 
$sha512= base64_encode(bin2hex(mhash(MHASH_SHA512,$phrase))); 
echo (“SHA1..:” . $sha1a . “\n”);
echo (“SHA1..:” . $sha1b . “\n”);
echo (“SHA256:” . $sha256 . “\n“);
echo (“SHA384:” . $sha384 . “\n“); echo (“SHA512:” . $sha512 . “\n”);