libcrypt-bcrypt-perl binary package in Ubuntu Mantic amd64

 Crypt::Bcrypt provides a modern and user-friendly implementation of the
 bcrypt password hash.
 .
 Note that in bcrypt passwords may only contain 72 characters. It may seem
 tempting to prehash the password before bcrypting it but that may make it
 vulnerable to password shucking, a salted solution (for example using a MAC)
 should be used instead if one wants to support large passwords.
 .
 The password is always expected to come as a (utf8-encoded) byte-string.

Source package