JavaScript packed ASP code for Amazon S3.

var Encryption = function(){

    var _Crypt = obj.get('ChilkatCrypt2.ChilkatCrypt2');
    _Crypt.UnlockComponent('your key');

    this.hmac_sha1 = function(hmac, str){
        _Crypt.HashAlgorithm = 'sha1';
        _Crypt.SetHmacKeyString(hmac);
        _Crypt.Charset = 'utf-8';
        _Crypt.EncodingMode = 'base64';
        return _Crypt.HmacStringENC(str);
    }

    this.md5 = function(str){
        _Crypt.HashAlgorithm = 'md5';
        _Crypt.Charset = 'utf-8';
        _Crypt.EncodingMode = 'Hex';
        return _Crypt.HashStringENC(str);
    }

}