commit:     5f0f383c852ede3368ede31f05eb6880a2f29455
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Tue Feb 28 08:17:51 2017 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Tue Feb 28 22:07:10 2017 +0000
URL:        https://gitweb.gentoo.org/proj/portage.git/commit/?id=5f0f383c

checksum: Add blake2* and sha3 hashes from hashlib 3.6+

Add initial support for using the new SHA3_256 and SHA3_512, as well
as competitive BLAKE2b and BLAKE2s hashes that are now provided
in hashlib module of Python 3.6.

Approved-by: Zac Medico <zmedico <AT> gentoo.org>

 pym/portage/checksum.py | 14 +++++++++++++-
 pym/portage/const.py    |  6 ++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/pym/portage/checksum.py b/pym/portage/checksum.py
index 8b4d96e30..a46b820af 100644
--- a/pym/portage/checksum.py
+++ b/pym/portage/checksum.py
@@ -24,6 +24,10 @@ import tempfile
 # SHA512: hashlib, mhash
 # RMD160: hashlib, pycrypto, mhash
 # WHIRLPOOL: hashlib, mhash, bundled
+# BLAKE2B (512): hashlib (3.6+)
+# BLAKE2S (512): hashlib (3.6+)
+# SHA3_256: hashlib (3.6+)
+# SHA3_512: hashlib (3.6+)
 
 
 #dict of all available hash functions
@@ -121,7 +125,15 @@ try:
        sha1hash = _generate_hash_function("SHA1", hashlib.sha1, 
origin="hashlib")
        sha256hash = _generate_hash_function("SHA256", hashlib.sha256, 
origin="hashlib")
        sha512hash = _generate_hash_function("SHA512", hashlib.sha512, 
origin="hashlib")
-       for local_name, hash_name in (("rmd160", "ripemd160"), ("whirlpool", 
"whirlpool")):
+       for local_name, hash_name in (
+                       ("rmd160", "ripemd160"),
+                       ("whirlpool", "whirlpool"),
+                       # available since Python 3.6
+                       ("BLAKE2B", "blake2b"),
+                       ("BLAKE2S", "blake2s"),
+                       ("SHA3_256", "sha3_256"),
+                       ("SHA3_512", "sha3_512"),
+                       ):
                try:
                        hashlib.new(hash_name)
                except ValueError:

diff --git a/pym/portage/const.py b/pym/portage/const.py
index 179efce98..0cef2e8ae 100644
--- a/pym/portage/const.py
+++ b/pym/portage/const.py
@@ -224,9 +224,6 @@ MANIFEST1_REQUIRED_HASH  = "MD5"
 # - Set manifest-hashes in gentoo-x86/metadata/layout.conf as follows:
 #     manifest-hashes = SHA512 WHIRLPOOL
 #
-# After SHA-3 is approved:
-# - Add new hashes to MANIFEST2_HASH_*.
-#
 # After SHA-3 is supported in stable portage:
 # - Set manifest-hashes in gentoo-x86/metadata/layout.conf as follows:
 #     manifest-hashes = SHA3 SHA512 WHIRLPOOL
@@ -234,7 +231,8 @@ MANIFEST1_REQUIRED_HASH  = "MD5"
 # After layout.conf settings correspond to defaults in stable portage:
 # - Remove redundant settings from gentoo-x86/metadata/layout.conf.
 
-MANIFEST2_HASH_FUNCTIONS = ("SHA256", "SHA512", "WHIRLPOOL")
+MANIFEST2_HASH_FUNCTIONS = ("SHA256", "SHA512", "WHIRLPOOL",
+               "BLAKE2B", "BLAKE2S", "SHA3_256", "SHA3_512")
 MANIFEST2_HASH_DEFAULTS = frozenset(["SHA256", "SHA512", "WHIRLPOOL"])
 MANIFEST2_REQUIRED_HASH  = "SHA256"
 

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