Security - PostgreSQL 9 Administration - page 145

See also
PgCrypto page in postgreSQL online documentation at the followin g website:
http://www.postgresql.org/docs/9.0/static/pgc rypto.html
The OpenSSL web page at the followin g website:
http://www.o penssl.org/
The GNU Privacy Handbook at the follow ing website:
http://www.gnupg.org/gph/e n/manual.html