Re: [PHP] Data Enryption

[Jason Barnett]

function encrypt( $string )
{
    $key = '&[EMAIL PROTECTED]';
No offense intended to you sir... but why do you use a static key in 
this way instead of using mcrypt?  Please forgive my naivete regarding 
encryption.

        
    $result = '';
        
    for( $i = 1; $i <= strlen( $string ); $i++ )
    {
                $char = substr( $string, $i - 1, 1 );
                $keychar = substr( $key, ( $i % strlen( $key ) ) - 1, 1 );
                $char = chr( ord( $char ) + ord( $keychar ) );
                $result .= $char;
        }
        
    return $result;
}
function decrypt( $string )
{
    $key = '&[EMAIL PROTECTED]';
Similar question here.  I know you would need the key for decryption, 
but again why not use mcrypt?  Has it not been hammered out enough to 
your liking?

        
    $result = '';
        
    for( $i = 1; $i <= strlen( $string ); $i++ )
    {
                $char = substr( $string, $i - 1, 1 );
                $keychar = substr( $key, ( $i % strlen( $key ) ) - 1, 1 );
                $char = chr( ord( $char ) - ord( $keychar ) );
                $result .= $char;
        }
        
    return $result;
}


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