From: Michael Vrable <vrable@cs.hmc.edu>
Date: Fri, 31 Aug 2012 03:15:27 +0000 (-0700)
Subject: Switch to hashlib (Python >= 2.5) for hash algorithms.
X-Git-Url: http://git.vrable.net/?p=cumulus.git;a=commitdiff_plain;h=e8f99f8ccafa3c0c08e370413f0e4d6142582fb4

Switch to hashlib (Python >= 2.5) for hash algorithms.

The old sha module is deprecated, and hashlib gives access to newer hash
algorithms.  Use it to add SHA-256 support as well.
---

diff --git a/README b/README
index 19188f7..bb83b25 100644
--- a/README
+++ b/README
@@ -6,11 +6,11 @@ How to Build
 Dependencies:
   - libuuid (sometimes part of e2fsprogs)
   - sqlite3
+  - Python (2.5 or later)
   - boto, the python interface to Amazon's Web Services (for S3 storage)
     http://code.google.com/p/boto
   - paramiko, SSH2 protocol for python (for sftp storage)
     http://www.lag.net/paramiko/
-  - python 2.5+ for sftp storage backend
 
 Building should be a simple matter of running "make".  This will produce
 an executable called "cumulus".
diff --git a/python/cumulus/__init__.py b/python/cumulus/__init__.py
index ff811b0..3f6b6f7 100644
--- a/python/cumulus/__init__.py
+++ b/python/cumulus/__init__.py
@@ -9,7 +9,7 @@ various parts of a Cumulus archive:
 """
 
 from __future__ import division
-import os, re, sha, tarfile, tempfile, thread
+import hashlib, os, re, tarfile, tempfile, thread
 from pysqlite2 import dbapi2 as sqlite3
 
 import cumulus.store, cumulus.store.file
@@ -56,7 +56,8 @@ class Struct:
         return "<%s %s>" % (self.__class__, self.__dict__)
 
 CHECKSUM_ALGORITHMS = {
-    'sha1': sha.new
+    'sha1': hashlib.sha1,
+    'sha256': hashlib.sha256,
 }
 
 class ChecksumCreator: