[gentoo-portage-dev] [GLEP59v2 2/5] Manifest2 hash: Whirlpool

[Robin H. Johnson]

From: "Robin H. Johnson" <robbat2@g.o>

Provide public-domain implementation of the Whirlpool hash algorithm to
be used as new Manifest2 hash.

Signed-off-by: Robin H. Johnson <robbat2@g.o>
---
 pym/portage/checksum.py |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/pym/portage/checksum.py b/pym/portage/checksum.py
index e5455fa..3593686 100644
--- a/pym/portage/checksum.py
+++ b/pym/portage/checksum.py
@@ -71,6 +71,10 @@ except ImportError:
 
 sha1hash = _generate_hash_function("SHA1", _new_sha1, origin="internal")
 
+# Bundled WHIRLPOOL implementation
+from portage.util.whirlpool import new as _new_whirlpool
+whirlpoolhash = _generate_hash_function("WHIRLPOOL", _new_whirlpool, origin="bundled")
+
 # Use pycrypto when available, prefer it over the internal fallbacks
 try:
 	from Crypto.Hash import SHA256, RIPEMD
@@ -80,14 +84,14 @@ except ImportError as e:
 	pass
 
 # Use hashlib from python-2.5 if available and prefer it over pycrypto and internal fallbacks.
-# Need special handling for RMD160 as it may not always be provided by hashlib.
+# Need special handling for RMD160/WHIRLPOOL as they may not always be provided by hashlib.
 try:
 	import hashlib, functools
 	
 	md5hash = _generate_hash_function("MD5", hashlib.md5, origin="hashlib")
 	sha1hash = _generate_hash_function("SHA1", hashlib.sha1, origin="hashlib")
 	sha256hash = _generate_hash_function("SHA256", hashlib.sha256, origin="hashlib")
-	for local_name, hash_name in (("rmd160", "ripemd160"), ):
+	for local_name, hash_name in (("rmd160", "ripemd160"), ("whirlpool", "whirlpool")):
 		try:
 			hashlib.new(hash_name)
 		except ValueError:
-- 
1.7.7