Re: [freehaven-dev] Information Dispersal

[dmolnar@belegost.mit.edu]

Hi Todd, 

You can find a program which implements information dispersal at

/home/freehaven/tools/IDA/cryptest

This is the "demo program" from Wei Dai's Crypto++ 3.1 library. 
The usage.dat file in the same directory tells you how to invoke the
command. More specifically, 

to split a file into 6 pieces, such that 3 are needed

cryptest s 6 3 filename

and this produces filename.01, filename.02, filename.03 ... filename.06

and then 

cryptest j filename.01 filename.02 filename.03 

will reconstruct filename in the same directory. 

If you want a different interface, like a library with a function to call
instead of using system(), just say so.  

Thanks, 
-David