I want to create encrypted memory filesystems for backup, and selective
data destruction: If I have data from different users say, each user's
backup will be stored as different encrypted file systems. Then I can
selectively destroy data from one user by throwing away the key.

Now, how do I estimate the actual available space on an encrypted
partition? Say, I need to backup 100MB - how big an mfs do I need to
create in order that the encrypted file system will be 100MB?

Secondly: Which of the two supported crypto file systems is recommended:
ELI or BDE? PHK writes in the manpage of BDE that no audit of the code
have been made, but no such warning appears on ELI. Which is
strongest/fastest/most efficient/reliable?

Thanks, Erik
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