Add hs2019 to algorithm list and set to default sign algorithm

Author: fulder

httpsig/sign.py

@@ -4,11 +4,12 @@
 from Crypto.Hash import HMAC
 from Crypto.PublicKey import RSA
 from Crypto.Signature import PKCS1_v1_5
+from Crypto.Signature import PKCS1_PSS
 
 from .utils import *
 
 
-DEFAULT_SIGN_ALGORITHM = "hmac-sha256"
+DEFAULT_SIGN_ALGORITHM = "hs2019"
 
 
 class Signer(object):

httpsig/utils.py

@@ -19,7 +19,8 @@
                 'rsa-sha512',
                 'hmac-sha1',
                 'hmac-sha256',
-                'hmac-sha512'])
+                'hmac-sha512',
+                'hs2019'])
 HASHES = {'sha1':   SHA,
           'sha256': SHA256,
           'sha512': SHA512}