def sign_policy_document(policy_document):
"""
Sign and return the policy doucument for a simple upload.
http://aws.amazon.com/articles/1434/#signyours3postform
"""
policy = base64.b64encode(json.dumps(policy_document).encode('utf-8'))
signature = base64.b64encode(sign(policy))
return {
'policy': str(policy, 'ascii'),
'signature': str(signature, 'ascii'),
}
def sign_headers(headers):
""" Sign and return the headers for a chunked upload. """
header_bytes = headers.encode('utf-8')
return {
'signature': str(base64.b64encode(sign(header_bytes)), 'ascii'),
}