1,633 reputation
1315
bio website f-hauri.ch
location Switzerland
age 49
visits member for 1 year, 8 months
seen yesterday

I'm an old open-source independent hacker,

concerned about concepts of ethical hacking, teaching and sharing.

I like to play with shell, perl, lisp (sometime), sed and lot of other languages/environments.

Co-system administrator in several configurations, after various SMEs, I like to sometimes take time to focus on methods that I can improve or re-create (for example to change the level of abstraction).

In this, surfing on differents StackExchange's sites is a good way to boost my inspiration!


Apr
5
comment What does this injected code do?
@D3C4FF Yes, of course as there is no external requirement, all this would be better done offline. (In fact the host I use to do this is not configured with a default route)
Apr
4
comment What does this injected code do?
Hum warn, this is another question! The answer could not by simply yes, but...
Apr
3
revised What does this injected code do?
added 347 characters in body
Apr
3
answered What does this injected code do?
Mar
30
comment Secret key is a prime number in GnuPG
You could easily get the source code and take a look, GnuPG is open-source!
Mar
30
comment Writing file shredder
Nice exploration of what's about! Just: In order to install a decoy, you have to: .1 shred all blocks, .2 fill all block with 0 (0x00) and finaly .3 install a fake. For ensuring not to leave suspect random data in the last block!
Mar
30
answered Is connection to keyserver encrypted?
Mar
30
answered Do keyservers keep logs of who adds whom to their keyrings?
Mar
19
comment Could I delete .csr files when the key is signed by CA
+1 as welcome on sse! (but your answer is something light;)
Mar
19
comment Could I delete .csr files when the key is signed by CA
+1, thank for explaining step by step! ( I only build client key on CA for special case where the client is a thin embed, built by scripts of mine by the same securised CA host... And the CA's disk is backuped on remote host, but encrypted.)
Mar
19
accepted Could I delete .csr files when the key is signed by CA
Mar
19
revised Could I delete .csr files when the key is signed by CA
Warn to not turn the sens of question
Mar
19
asked Could I delete .csr files when the key is signed by CA
Mar
16
comment ROP Exploitation on ARM
Why did your link point to google redirect?
Mar
16
awarded  Scholar
Mar
16
accepted PGP on hibernation files?
Mar
16
comment PGP on hibernation files?
On my linux, PGP allocated memory won't be swapped and pre-hiberation script force umount all crypted filesystems.
Mar
11
comment What statistics can be used to identify pseudorandom data?
Why only 0 to 7, simple and small text could be encoded in 5, 6, 7 or 8 bits in order to hide them using stegano, for sample.
Mar
2
comment Why we use GPG signatures for file verification instead of hash values?
No if signing key is (correctly) password protected (Nota: Private key have to NOT be stored on public server!).
Mar
2
comment Why we use GPG signatures for file verification instead of hash values?
While anybody could create/modify a hashfile, only one could create a valid signature. Checksum is usefull for transfert or hardware issue, and signature is usefull for ensuring source.