What are you trying to protect? If you are just trying to hide
passwords so they are not in plain text, then you do not need
encryption, only a hash algorithm like SHA-1 or MD5. Hashing is
simple, because you don't have to manage public and private keys.
There is also no way to "break" a hashing algorithm unless you use a
brute force approach.

Is this what you need, or do you need something that is reversible
into the original string?

--- In firebird-support@yahoogroups.com, "carlos_arguilar"
<carlos_arguilar@y...> wrote:

>
> Hello!
> I have a table in my database that has a field that need

encryption.

> I have wrote a UDF, however, it don't work very well on firebird.
> Anyone know a routine be able such a thing.
> Please, help me.
> Regards,
> Carlos Arguilar