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DESCRIPTION
Here is a implementation of crypto hashes for PostgreSQL.
It exports 2 functions to SQL level:
digest(data::text, hash_name::text)
which returns hexadecimal coded hash over data by
specified algorithm. eg
> select digest('blah', 'sha1');
5bf1fd927dfb8679496a2e6cf00cbe50c1c87145
digest_exists(hash_name::text)::bool
which reports if particular hash type exists.
If any of arguments are NULL they return NULL.
HASHES
For choosing library you must edit Makefile.
standalone (default):
MD5, SHA1
(the code is from KAME project. Actually I hate code
duplication, but I also want to quarantee that MD5 and
SHA1 exist)
mhash (0.8.1):
MD5, SHA1, CRC32, CRC32B, GOST, TIGER, RIPEMD160,
HAVAL(256,224,192,160,128)
openssl:
MD5, SHA1, RIPEMD160, MD2
kerberos5 (heimdal):
MD5, SHA1
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