Automatic initialization vector in IVMode class fails.

[GoogleCodeExporter]

The getID4e() method stores the generated iv data correctly, but the getIV4d() 
method calls the variable "iv" (which is null by default) instead of the getter 
method IV().  

This:

protected function getIV4d():ByteArray {
    var vec:ByteArray = new ByteArray;
    if (iv) {
        vec.writeBytes(iv);
    } else {
        throw new Error("an IV must be set before calling decrypt()");
    }
    return vec;
}

should be changed to:

protected function getIV4d():ByteArray {
    var vec:ByteArray = new ByteArray;
    if (IV) {
        vec.writeBytes(IV);
    } else {
        throw new Error("an IV must be set before calling decrypt()");
    }
    return vec;
}

Original issue reported on code.google.com by tobiasgo...@me.com on 4 Oct 2010 at 10:34