(PHP ActiveX) Hash the Contents of a String (SHA256 and other hash algorithms)

Demonstrates how to hash the contents of a string using SHA256, SHA384, SHA512, MD2, MD5, HAVAL, RIPEMD, etc.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example requires the Chilkat Crypt API to have been previously unlocked.
// See Unlock Chilkat Crypt for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.Crypt2");

// Choose the hash algorithm.
// Can be  "sha1", "sha256", "sha384", "sha512", "md2", "md5", "haval", "ripemd128", "ripemd160","ripemd256", or "ripemd320".
$crypt->HashAlgorithm = 'sha256';

// The byte representation of the string matters when hashing. 
// Tell Chilkat that we want to use the utf-8 byte representation.
$crypt->Charset = 'utf-8';

$hashBytes = $crypt->HashString('They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.');

// Let's examine the hash as a hex string.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sb = new COM("Chilkat.StringBuilder");
$sb->AppendEncoded($hashBytes,'hex');
print 'SHA256 hash = ' . $sb->getAsString() . "\n";

?>