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postgres/contrib/pgcrypto
Bruce Momjian e586026d10 The KAME files md5.* and sha1.* have the following changelog 25 years ago
..
Makefile Hashing functions from Marko Kreen <marko@l-t.ee> 25 years ago
README.pgcrypto Hashing functions from Marko Kreen <marko@l-t.ee> 25 years ago
internal.c Hashing functions from Marko Kreen <marko@l-t.ee> 25 years ago
krb.c Hashing functions from Marko Kreen <marko@l-t.ee> 25 years ago
md5.c The KAME files md5.* and sha1.* have the following changelog 25 years ago
md5.h The KAME files md5.* and sha1.* have the following changelog 25 years ago
mhash.c Hashing functions from Marko Kreen <marko@l-t.ee> 25 years ago
openssl.c Hashing functions from Marko Kreen <marko@l-t.ee> 25 years ago
pgcrypto.c The KAME files md5.* and sha1.* have the following changelog 25 years ago
pgcrypto.h The KAME files md5.* and sha1.* have the following changelog 25 years ago
pgcrypto.sql.in Revise handling of oldstyle/newstyle functions per recent discussions 25 years ago
sha1.c The KAME files md5.* and sha1.* have the following changelog 25 years ago
sha1.h The KAME files md5.* and sha1.* have the following changelog 25 years ago

README.pgcrypto


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