LabVIEW
how to lock a textfile?
Hi,
csxcs_366's example shows a simple cipher using XOR:
It's as secure as your proposal
csxcs_366's example shows a simple cipher using XOR:
It's as secure as your proposal
Message Edited by GerdW on 09-14-2007 01:38 PM
That's exactly what i was looking for...
This is supposed to be hidden for physicist, so no way they will find how to decode it
have a nice weekend!
Laurent
This is supposed to be hidden for physicist, so no way they will find how to decode it
have a nice weekend!
Laurent
Remember: Albert Einstein was a physicist, and I suspect he wouldn't have trouble with "cracking" that code. 
The encoding would only be a deterrent to the most casual attempts, would actually be an attractant to a number of my friends 
If it is plain text they will note the repetition of certain characters and refer to the tables that show letter frequency in a particular language. If it a file of numbers, with standard delimiters (i.e. commas or tabs) then once they determine those, and figure how the "encoding" is being done .... "The solution of this problem is left to the industrious student". How secure do you need it to be? The reality is that simple muddle type methods are good only to disuade the lazy from looking/modifying, act as a challenge to a lot of brighter types. It was a physicist (I think) that noticed a small, penny, discrepancy in the billing of a computer account that was able to then trace back to the hacker that had hijacked the universities computers to access others on the network. Most of us wouldn't have cared about a penny or two.
If it is plain text they will note the repetition of certain characters and refer to the tables that show letter frequency in a particular language. If it a file of numbers, with standard delimiters (i.e. commas or tabs) then once they determine those, and figure how the "encoding" is being done .... "The solution of this problem is left to the industrious student". How secure do you need it to be? The reality is that simple muddle type methods are good only to disuade the lazy from looking/modifying, act as a challenge to a lot of brighter types. It was a physicist (I think) that noticed a small, penny, discrepancy in the billing of a computer account that was able to then trace back to the hacker that had hijacked the universities computers to access others on the network. Most of us wouldn't have cared about a penny or two.If more than casual security is required there have been a number of threads on this forum regarding encryption, but the bottom line is most can be broken if there is enough desire (and money and computer power and knowledge).
good luck
