Shorter private key variable name

[pygost.git] / pygost / gost3410_vko.py

diff --git a/pygost/gost3410_vko.py b/pygost/gost3410_vko.py
index e8bc13f9dbdb7e1cac74e97573b199f1e87313ec..affe819fcdc0d50337a29be871b6809c121c7988 100644 (file)
--- a/pygost/gost3410_vko.py
+++ b/pygost/gost3410_vko.py
@@ -5,11 +5,11 @@ from pygost.gost341194 import GOST341194
 from pygost.utils import bytes2long
 
 
-def vko_34102001(curve, private_key, pubkey, ukm):
+def vko_34102001(curve, prv, pubkey, ukm):
     """ Make Diffie-Hellman computation (34.10-2001, 34.11-94)
 
     :param GOST3410Curve curve: curve to use
-    :param long private_key: private key
+    :param long prv: private key
     :param ukm: UKM value (VKO-factor)
     :type ukm: bytes, 8 bytes
     :param pubkey: public key's part
@@ -21,16 +21,16 @@ def vko_34102001(curve, private_key, pubkey, ukm):
     :rfc:`4357` VKO GOST 34.10-2001 with little-endian
     hash output.
     """
-    key = curve.exp(private_key, pubkey[0], pubkey[1])
+    key = curve.exp(prv, pubkey[0], pubkey[1])
     key = curve.exp(bytes2long(24 * b"\x00" + ukm), key[0], key[1])
     return GOST341194(pub_marshal(key), "GostR3411_94_CryptoProParamSet").digest()
 
 
-def vko_34102012256(curve, private_key, pubkey, ukm=b"\x00\x00\x00\x00\x00\x00\x00\01"):
+def vko_34102012256(curve, prv, pubkey, ukm=b"\x00\x00\x00\x00\x00\x00\x00\01"):
     """ Make Diffie-Hellman computation (34.10-2012, 34.11-2012 256 bit)
 
     :param GOST3410Curve curve: curve to use
-    :param long private_key: private key
+    :param long prv: private key
     :param ukm: UKM value (VKO-factor)
     :type ukm: bytes, 8 bytes
     :param pubkey: public key's part
@@ -38,16 +38,16 @@ def vko_34102012256(curve, private_key, pubkey, ukm=b"\x00\x00\x00\x00\x00\x00\x
     :return: Key Encryption Key (shared key)
     :rtype: bytes, 32 bytes
     """
-    key = curve.exp(private_key, pubkey[0], pubkey[1])
+    key = curve.exp(prv, pubkey[0], pubkey[1])
     key = curve.exp(bytes2long(ukm[::-1]), key[0], key[1])
     return GOST34112012256(pub_marshal(key, mode=2012)).digest()
 
 
-def vko_34102012512(curve, private_key, pubkey, ukm=b"\x00\x00\x00\x00\x00\x00\x00\01"):
+def vko_34102012512(curve, prv, pubkey, ukm=b"\x00\x00\x00\x00\x00\x00\x00\01"):
     """ Make Diffie-Hellman computation (34.10-2012, 34.11-2012 512 bit)
 
     :param GOST3410Curve curve: curve to use
-    :param long private_key: private key
+    :param long prv: private key
     :param ukm: UKM value (VKO-factor)
     :type ukm: bytes, 8 bytes
     :param pubkey: public key's part
@@ -55,6 +55,6 @@ def vko_34102012512(curve, private_key, pubkey, ukm=b"\x00\x00\x00\x00\x00\x00\x
     :return: Key Encryption Key (shared key)
     :rtype: bytes, 32 bytes
     """
-    key = curve.exp(private_key, pubkey[0], pubkey[1])
+    key = curve.exp(prv, pubkey[0], pubkey[1])
     key = curve.exp(bytes2long(ukm[::-1]), key[0], key[1])
     return GOST34112012512(pub_marshal(key, mode=2012)).digest()