On Sat, Oct 01, 2011 at 07:40:52AM +0000, Robin H. Johnson wrote:
> From: "Robin H. Johnson" <robb...@gentoo.org>
>
> Provide public-domain implementation of the Whirlpool hash algorithm to
> be used as new Manifest2 hash.
>
> Signed-off-by: Robin H. Johnson <robb...@gentoo.org>
> ---
> 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")
> +
Likely should shift this to a trailing check if no whirlpool
implementation was found; via this, we can avoid the import unless
it's needed.
~brian
> # 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
>
