[REBOL] Re: anyone done any encryption work with rebol
From: reboler:programmer at: 21-Nov-2002 14:02
Re: anyone done any encryption work with rebol
*** NO ENCRYPTION CODE INCLUDED !!! ***
Yes, I have encrypting file-viewers/emailers for /Core, and /View.
(The /Core script may still be available in the discussion list archives.)
The main algorithm is ARCFOUR. (from a USENET algorithm, which claims to be equivalent
to RC4 of RSA, Inc)
I also use CipherSaber and CipherSaber2, which are based on ARCFOUR (do a web search
for CipherSaber for more info).
The en/decryption process is rather slow in REBOL, as you would expect, but not unreasonably
so. En/decrypting an average email of less than 1K is practically instantaneous. 50K
takes about 5 seconds, 500K about 20-25 seconds (all on Win98 with 333MgHz processor).
I also have a low security algorithm based on compression, reversal, bit-wise frame-shift,
and xor, which is much, much faster. While not secure in the cryptographic sense, I'll
wager your average spouse, boss, ISP sysadmin could not decrypt it.
FYI: With the above /View script you can
- view text and image files
- encrypt files
- email files (send & receive)
- view encrypted files without decrypting them (they are decrypted in memory, not on
Bottom Line: you don't need to pay for /Pro to get encryption.
(but I still recommend buying /Pro!)
And with roll-your-own encryption you get to see all the source code!
BTW: I have been scolded before for discussing the mechanics of encryption on an open
I will not submit any strong encryption code to this thread, through this group.