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Added documentation

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git-svn-id: https://vsmartcard.svn.sourceforge.net/svnroot/vsmartcard@507 96b47cad-a561-4643-ad3b-153ac7d7599c
This commit is contained in:
oepen
2011-08-23 13:43:24 +00:00
parent 0a308c078e
commit 67f9e654c7
1 changed files with 5 additions and 1 deletions
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6
virtualsmartcard/src/vpicc/virtualsmartcard/cards/ePass.py
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@@ -26,7 +26,9 @@ import hashlib, struct
from os import urandom from os import urandom
class ePass_SE(Security_Environment): class ePass_SE(Security_Environment):
"""This class implements the Security Environment of the ICAO Passports. It
is required in order to use the send sequence counter for secure messaging.
"""
def __init__(self, SE, ssc=None): def __init__(self, SE, ssc=None):
self.ssc = ssc self.ssc = ssc
Security_Environment.__init__(self, SE) Security_Environment.__init__(self, SE)
@@ -126,6 +128,8 @@ class PassportSAM(SAM):
return SW["NORMAL"], Eicc + Micc return SW["NORMAL"], Eicc + Micc
def _mac(self, key, data, ssc = None, dopad=True): def _mac(self, key, data, ssc = None, dopad=True):
""" Compute a message authentication code using a given key and an
optional send sequence counter."""
if ssc: if ssc:
data = ssc + data data = ssc + data
if dopad: if dopad: