pgcrypto: bug in gen_salt (md5/xdes) - Mailing list pgsql-patches

There is a signedness bug in Openwall gen_salt code that
pgcrypto uses.  This makes the salt space for md5 and xdes
algorithms a lot smaller.

Salts for blowfish and standard des are unaffected.

Attached is upstream fix for it.  This applies all the
way from 7.2 to 8.1 and HEAD.  Please apply this to all
active branches.

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marko