X-Git-Url: http://www.git.cypherpunks.ru/?p=pygost.git;a=blobdiff_plain;f=pygost%2Fgost3410_vko.py;h=7bc71113b69e99bcf10dbe2d819d2d8b96361a47;hp=046df9e1212cfaafe6712cbb7b80f2cd2e1f16d2;hb=2bb1a163d32e4167e6904ff3c6b4cf64ea7287bb;hpb=a2b4808f6628225be99874bd5f6a0f80a514db82

diff --git a/pygost/gost3410_vko.py b/pygost/gost3410_vko.py
index 046df9e..7bc7111 100644
--- a/pygost/gost3410_vko.py
+++ b/pygost/gost3410_vko.py
@@ -26,7 +26,7 @@ from pygost.utils import bytes2long
 def ukm_unmarshal(ukm):
     """Unmarshal UKM value
 
-    :type ukm: bytes
+    :type ukm: little-endian bytes
     :rtype: long
     """
     return bytes2long(ukm[::-1])
@@ -34,7 +34,7 @@ def ukm_unmarshal(ukm):
 
 def kek(curve, prv, pub, ukm, mode):
     key = curve.exp(prv, pub[0], pub[1])
-    key = curve.exp(ukm, key[0], key[1])
+    key = curve.exp(curve.cofactor * ukm, key[0], key[1])
     return pub_marshal(key, mode)
 
 
@@ -55,7 +55,7 @@ def kek_34102001(curve, prv, pub, ukm):
     """
     return GOST341194(
         kek(curve, prv, pub, ukm, mode=2001),
-        "id-GostR3411-94-CryptoProParamSet",
+        sbox="id-GostR3411-94-CryptoProParamSet",
     ).digest()