howto use pgencrypto ?

Hi,

I have installed pgencrypot so I think...
I ran make checkinstall I got:

============== installing PL/pgSQL
==============
============== running regression test queries
==============
test init ... ok
test md5 ... ok
test sha1 ... ok
test hmac-md5 ... ok
test hmac-sha1 ... ok
test blowfish ... ok
test rijndael ... ok
test crypt-des ... ok
test crypt-md5 ... ok
test crypt-blowfish ... ok
test crypt-xdes ... ok

======================
All 11 tests passed.
======================

But when I ran:

select encrypt
('srcip'::bytea,'pass'::bytea,'bf'::text)::bytea as
"test" from tbltcplog limit 3;

I got:

ERROR: Function encrypt(bytea, bytea, text) does not
exist
Unable to identify a function that satisfies
the given argument types
You may need to add explicit typecasts

Please help!!!!
Thanks,
Dave

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