Sifreleme

<?php
/**
 * Portable PHP password hashing framework.
 * @package phpass
 * @since 2.5
 * @version 0.3 / WordPress
 * @link http://www.openwall.com/phpass/
 */

#
# Written by Solar Designer <solar at openwall.com> in 2004-2006 and placed in
# the public domain.  Revised in subsequent years, still public domain.
#
# There's absolutely no warranty.
#
# Please be sure to update the Version line if you edit this file in any way.
# It is suggested that you leave the main version number intact, but indicate
# your project name (after the slash) and add your own revision information.
#
# Please do not change the "private" password hashing method implemented in
# here, thereby making your hashes incompatible.  However, if you must, please
# change the hash type identifier (the "$P$") to something different.
#
# Obviously, since this code is in the public domain, the above are not
# requirements (there can be none), but merely suggestions.
#

/**
 * Portable PHP password hashing framework.
 *
 * @package phpass
 * @version 0.3 / WordPress
 * @link http://www.openwall.com/phpass/
 * @since 2.5
 */
class PasswordHash
{

    var $itoa64;
    var $iteration_count_log2;
    var $portable_hashes;
    var $random_state;

    function PasswordHash( $iteration_count_log2, $portable_hashes )
    {
        $this->itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';

        if ( $iteration_count_log2 < 4 || $iteration_count_log2 > 31 )
            $iteration_count_log2 = 8;
        $this->iteration_count_log2 = $iteration_count_log2;

        $this->portable_hashes = $portable_hashes;

        $this->random_state = microtime() . uniqid( rand(), TRUE ); // removed getmypid() for compatibility reasons
    }

    function get_random_bytes( $count )
    {
        $output = '';
        if ( @is_readable( '/dev/urandom' ) &&
            ( $fh = @fopen( '/dev/urandom', 'rb' ) )
        ) {
            $output = fread( $fh, $count );
            fclose( $fh );
        }

        if ( strlen( $output ) < $count ) {
            $output = '';
            for ( $i = 0; $i < $count; $i += 16 ) {
                $this->random_state =
                    md5( microtime() . $this->random_state );
                $output .=
                    pack( 'H*', md5( $this->random_state ) );
            }
            $output = substr( $output, 0, $count );
        }

        return $output;
    }

    function encode64( $input, $count )
    {
        $output = '';
        $i = 0;
        do {
            $value = ord( $input[ $i++ ] );
            $output .= $this->itoa64[ $value & 0x3f ];
            if ( $i < $count )
                $value |= ord( $input[ $i ] ) << 8;
            $output .= $this->itoa64[ ( $value >> 6 ) & 0x3f ];
            if ( $i++ >= $count )
                break;
            if ( $i < $count )
                $value |= ord( $input[ $i ] ) << 16;
            $output .= $this->itoa64[ ( $value >> 12 ) & 0x3f ];
            if ( $i++ >= $count )
                break;
            $output .= $this->itoa64[ ( $value >> 18 ) & 0x3f ];
        } while ( $i < $count );

        return $output;
    }

    function gensalt_private( $input )
    {
        $output = '$P$';
        $output .= $this->itoa64[ min( $this->iteration_count_log2 +
        ( ( PHP_VERSION >= '5' ) ? 5 : 3 ), 30 ) ];
        $output .= $this->encode64( $input, 6 );

        return $output;
    }

    function crypt_private( $password, $setting )
    {
        $output = '*0';
        if ( substr( $setting, 0, 2 ) == $output )
            $output = '*1';

        $id = substr( $setting, 0, 3 );
        # We use "$P$", phpBB3 uses "$H$" for the same thing
        if ( $id != '$P$' && $id != '$H$' )
            return $output;

        $count_log2 = strpos( $this->itoa64, $setting[ 3 ] );
        if ( $count_log2 < 7 || $count_log2 > 30 )
            return $output;

        $count = 1 << $count_log2;

        $salt = substr( $setting, 4, 8 );
        if ( strlen( $salt ) != 8 )
            return $output;

        # We're kind of forced to use MD5 here since it's the only
        # cryptographic primitive available in all versions of PHP
        # currently in use.  To implement our own low-level crypto
        # in PHP would result in much worse performance and
        # consequently in lower iteration counts and hashes that are
        # quicker to crack (by non-PHP code).
        if ( PHP_VERSION >= '5' ) {
            $hash = md5( $salt . $password, TRUE );
            do {
                $hash = md5( $hash . $password, TRUE );
            } while ( --$count );
        } else {
            $hash = pack( 'H*', md5( $salt . $password ) );
            do {
                $hash = pack( 'H*', md5( $hash . $password ) );
            } while ( --$count );
        }

        $output = substr( $setting, 0, 12 );
        $output .= $this->encode64( $hash, 16 );

        return $output;
    }

    function gensalt_extended( $input )
    {
        $count_log2 = min( $this->iteration_count_log2 + 8, 24 );
        # This should be odd to not reveal weak DES keys, and the
        # maximum valid value is (2**24 - 1) which is odd anyway.
        $count = ( 1 << $count_log2 ) - 1;

        $output = '_';
        $output .= $this->itoa64[ $count & 0x3f ];
        $output .= $this->itoa64[ ( $count >> 6 ) & 0x3f ];
        $output .= $this->itoa64[ ( $count >> 12 ) & 0x3f ];
        $output .= $this->itoa64[ ( $count >> 18 ) & 0x3f ];

        $output .= $this->encode64( $input, 3 );

        return $output;
    }

    function gensalt_blowfish( $input )
    {
        # This one needs to use a different order of characters and a
        # different encoding scheme from the one in encode64() above.
        # We care because the last character in our encoded string will
        # only represent 2 bits.  While two known implementations of
        # bcrypt will happily accept and correct a salt string which
        # has the 4 unused bits set to non-zero, we do not want to take
        # chances and we also do not want to waste an additional byte
        # of entropy.
        $itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';

        $output = '$2a$';
        $output .= chr( ord( '0' ) + $this->iteration_count_log2 / 10 );
        $output .= chr( ord( '0' ) + $this->iteration_count_log2 % 10 );
        $output .= '$';

        $i = 0;
        do {
            $c1 = ord( $input[ $i++ ] );
            $output .= $itoa64[ $c1 >> 2 ];
            $c1 = ( $c1 & 0x03 ) << 4;
            if ( $i >= 16 ) {
                $output .= $itoa64[ $c1 ];
                break;
            }

            $c2 = ord( $input[ $i++ ] );
            $c1 |= $c2 >> 4;
            $output .= $itoa64[ $c1 ];
            $c1 = ( $c2 & 0x0f ) << 2;

            $c2 = ord( $input[ $i++ ] );
            $c1 |= $c2 >> 6;
            $output .= $itoa64[ $c1 ];
            $output .= $itoa64[ $c2 & 0x3f ];
        } while ( 1 );

        return $output;
    }

    function HashPassword( $password )
    {
        $random = '';

        if ( CRYPT_BLOWFISH == 1 && !$this->portable_hashes ) {
            $random = $this->get_random_bytes( 16 );
            $hash =
                crypt( $password, $this->gensalt_blowfish( $random ) );
            if ( strlen( $hash ) == 60 )
                return $hash;
        }

        if ( CRYPT_EXT_DES == 1 && !$this->portable_hashes ) {
            if ( strlen( $random ) < 3 )
                $random = $this->get_random_bytes( 3 );
            $hash =
                crypt( $password, $this->gensalt_extended( $random ) );
            if ( strlen( $hash ) == 20 )
                return $hash;
        }

        if ( strlen( $random ) < 6 )
            $random = $this->get_random_bytes( 6 );
        $hash =
            $this->crypt_private( $password,
                $this->gensalt_private( $random ) );
        if ( strlen( $hash ) == 34 )
            return $hash;

        # Returning '*' on error is safe here, but would _not_ be safe
        # in a crypt(3)-like function used _both_ for generating new
        # hashes and for validating passwords against existing hashes.
        return '*';
    }

    function CheckPassword( $password, $stored_hash )
    {
        $hash = $this->crypt_private( $password, $stored_hash );
        if ( $hash[ 0 ] == '*' )
            $hash = crypt( $password, $stored_hash );

        return $hash === $stored_hash;
    }
}

?>

Şifreyi ise şöyle oluşturuyorsun;
<?php

require 'PasswordHash.php'; // class dosyası

$password = '123456';
$passwordHash = new PasswordHash(8, true);
$password = $passwordHash->HashPassword( trim( $password ) );

echo $password;

?>