I'm looking for file system with reasonably error corrections, but rugged against forensic after wipe.
Say, encrypted container via loop mounted like ext4 - journal file system. This is good performance and secure in many ways.
Wiping in this scenario is a destroying at least start of crypto-container(journal of ext4). It is fast. Recovering require huge of power: key + password + destroyed crypto-container's prefix.
Is there special file system with encryption and great wipe feature. "Great", I, mean fast and unrecoverable.
E.g. journal at start of file system contain not a addresses of files, but key - map of blocks randomly situated in memory area. Destroying of this key means destroying a sequences of whole file system. File in such file system is lay in un-fragmented memory's sequence. Plus whole of file system encrypted.
Wipe require rewriting the journal(map) of the file system only.
Say, rewrite map and key 30 tries, and no NSA, no NASA, no CIA can recovery wiped file-system.