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4 new of 38 responses total.
zyraf
response 35 of 38: Mark Unseen   Jul 30 14:18 UTC 2004

i have some data that should be encrypted, and can't be putted on some serwer
unencrypted, they are just for my use. so how can i encrypt a floppy or files
in it?
second problem is where to put the key. if its on my computer, it isnt safe
and i dont want to have my friends addresses and/or telephone numbers not
encrypted. 
any open source software?
maus
response 36 of 38: Mark Unseen   May 7 00:44 UTC 2007

resp:35

http://www.afn.org/~afn21533/tinyaes.zip
ftp://ftp.sac.sk/sac/security/tinyfish.zip
ftp://ftp.demon.co.uk/pub/mirrors/garbo/pc/crypt/idea3a.zip

These are easy to use, run in DOS or Windows and implement well-known,
well-tested ciphers. The codes are written in Intel Assembly language,
so verifying them will be painful, but if you trust the author and the
webpage, then that is a non-issue (just use the prebuilt exe files). The
enciphered file is indistinguishable from noise. 

You can read a little blurb about these at
http://home.att.net/~short.stop/freesoft/encrypt.htm

The ciphers themselves are described at: 

http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
http://en.wikipedia.org/wiki/Blowfish_%28cipher%29
http://en.wikipedia.org/wiki/International_Data_Encryption_Algorithm

I recommend that you read Bruce Schneir's classic work, as well as the
novel _Cryptonomicon_. 

maus
response 37 of 38: Mark Unseen   May 7 00:51 UTC 2007

http://www.afn.org/~afn21533/rgdprogs.htm   <=== Interesting brief
descriptions of ciphers and implementations of them (typicallly in C or
Intel assembler)
zyraf
response 38 of 38: Mark Unseen   Jul 17 03:54 UTC 2007

hi
Thanks, this looks interesting.
I am wondering what can be done to make these things more easy to use: it
should be not a problem to integrate pgp and mail client, but what to do when
you want to encrypt some local files or a partition? This would be done to
make it unreadable when someone gets the computer (and in some case,
unauthorized person would also get anything thats near computer, and/or the
owner). Where to keep the key? It will no longer be a password, more like some
random stuff, not something possible to remember and write from keyboard all
the time. Where to keep the encrypted data? What do you think is the safest
scenario, and also pretty easy to implement? Having a pendrive with encrypted
filesystem where files would be kept and modified would be good, no need to
copy from safe place, decrypt, use/modify, crypt, store and get rid of
anything that is left on hard drive. 
btw You seem to be the only one (?) active here now
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