I have the same problem with this as I did with one of my earlier attempts at avoiding temporary files
The encryption is only being applied to the first element in the record not to the whole record. So what I end up with is a .perlpasswd file in this format

encrypted notencrypted notencrypted
encrypted notencrypted notencrypted
[download]

Unfortunately the third field is the password, which remains unencrypted. I've tried using map as well but always seem to end up with only the first field encrypted but not the others.
Any ideas on how I fix this would be welcome