# Type of request: This is a ...
[ ] bug report
[x] feature request

# Detailed description
As a Developer,
I want to be able to simulate BadDigest and InvalidDigest errors,
So that I can test the error handling logic

## Expected behavior
https://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
BadDigest: The Content-MD5 you specified did not match what we received.
InvalidDigest: The Content-MD5 you specified is not valid.

## Actual behavior
localstack returns InvalidDigest when MD5 does not match payload.


""" Add key and bucket parameters to starting URL query string. """
    parsed = urlparse.urlparse(starting_url)
    query = collections.OrderedDict(urlparse.parse_qsl(parsed.query))
    query.update([('key', key), ('bucket', bucket)])
    redirect_url = urlparse.urlunparse((
        parsed.scheme, parsed.netloc, parsed.path,
        parsed.params, urlparse.urlencode(query), None))
    return redirect_url
def is_bucket_specified_in_domain_name(path, headers):
    host = headers.get('host', '')
    return re.match(r'.*s3(\-website)?\.([^\.]+\.)?amazonaws.com', host)
def is_object_specific_request(path, headers):
    """ Return whether the given request is specific to a certain S3 object.
        Note: the bucket name is usually specified as a path parameter,
        but may also be part of the domain name! """
    bucket_in_domain = is_bucket_specified_in_domain_name(path, headers)
    parts = len(path.split('/'))
    return parts > (1 if bucket_in_domain else 2)
def normalize_bucket_name(bucket_name):
    bucket_name = bucket_name or ''
    
    bucket_name = bucket_name.lower()
    return bucket_name
def get_key_name(path, headers):
    parsed = urlparse.urlparse(path)
    path_parts = parsed.path.lstrip('/').split('/', 1)
    if uses_path_addressing(headers):
        return path_parts[1]
    return path_parts[0]
def uses_path_addressing(headers):