Secure file erase

[SFSxOI]

Irrelevant to the discussion, but WHY did you do that SFSxOI?! WHY?!

Why what?

[Thorium]

Irrelevant to the discussion, but WHY did you do that SFSxOI?! WHY?!

Why what?

You wrote WoW and not wow. I think he want to know if you are a World of Warcraft addicted. ^^

[SFSxOI]

Oh...some times there is a disturbance in the space-time continum and the event horizon of the black hole between my brain and the keyboard.

No, i'm not world of warcraft addicted, never played it which is probably why I missed the implied reference to it in his question.

Actually its correct slang in the area of the country i'm from to show initial suprise and exclaim it in writing for the emphasis on the suprise.

But I like the space-time continum/event horizon/black hole/keyboard theory better myself, which i have coined as the STCEHBHK acronym which is pronounced in Klingon as, well, STCEHBHK

[Thorium]

Oh...some times there is a disturbance in the space-time continum and the event horizon of the black hole between my brain and the keyboard.

Sounds pretty much plausible. Case solved. ^^

[Rescator]

@SFSxOI I'm rather impressed at your knowledge in this, and I agree fully with what you said.

Here's a little example for those not understanding what can be recovered:

T%ismay bea!bit hard8to read,
and a com uter pr g am may have a lot of issues making s0nse of this.
But a human monitor or fo&ensic reviewer wo)ld notice a patteån,
and flag this as rel"vant so a pas&word or other sensitpve info could be partiølly recovered and the bl nks filled in.

As SFSxOI said, that's all they might need to be able to prove your guilty of whatever the charges may be.

[doctorized]

I brought this post back to life to ask if there is, after all this discussion, a reliable way to safely delete a file. I have this code:

Code: Select all

Procedure DeleteFileSecurely(filename$)
OpenCryptRandom()
For i = 1 To 8
	If OpenFile(0, filename$) 
		If Lof(0) > 0
			*temp = AllocateMemory(Lof(0))
			CryptRandomData(*temp, Lof(0))
			FileSeek(0,0)
			WriteData(0,*temp,Lof(0))
			FlushFileBuffers(0)
			FreeMemory(*temp)
		EndIf
		CloseFile(0)
	EndIf
Next
CloseCryptRandom()
DeleteFile(filename$)
EndProcedure

but it is not deleting securely the file every time. It only deletes the file securely when it runs one time without DeleteFile(filename$) closes the app and then runs again with DeleteFile(filename$).