Appropriate Namespace for a PBKDF1 implementation?

I am going to be submitting a module that provides PBKDF1 functionality
in pure perl. It will support both the standard CryptDeriveKey that
most libraries implementing it have, as well as a MS.Net and Java
compatible GetBytes (arbitrary number of bytes) function.

PBKDF1 is a key derivation function, defined in PKCS #5 v2.0
(specifically RFC 2898).

At any rate, is Crypt::PBKDF1 appropriate, or Crypt::PKCS::PBKDF1,
or...?

Thanks

Lokkju