def sign_headers(account, method, path):
sign = HeaderSigner(account.ap_id(),
account.private_key,
algorithm='rsa-sha256',
headers=['(request-target)', 'date'
]).sign({'Date': datetime.now().isoformat()},
method=method,
path=path)
auth = sign.pop('authorization')
sign['Signature'] = auth[len('Signature '):] if auth.startswith(
'Signature ') else ''
return sign
