Next message: Jeff Norton: "Re: [LUNI] ipop3d WAS:Re:"
So, CSS is basically a password protected system with one password for
everyone in the world, or region thereof? In other words, not really
encryption at all but more a sort of ridiculous file format? (see: Security
by Obscurity...)
Robert
> -----Original Message-----
> From: Douglas Trainor [mailto:trainor@uic.edu]
> Sent: Wednesday, March 14, 2001 07:21 PM
> To: luni@luni.org
> Subject: [LUNI] efdtt.c
>
>
> /* efdtt.c Author: Charles M. Hannum
> <root@ihack.net> */
> /*
> */
> /* Usage is: cat title-key scrambled.vob | efdtt
> >clear.vob */
>
> #define K(i)(x[i]^s[i+84])<<
> unsigned char
> x[5],y,z,s[2048];main(n){for(read(0,x,5);read(0,s,n=2048);write(1
> ,s,n))if(s[y=s[13]%8+20]/16%4==1){int
> i=K(1)17^256+K(0)8,k=K(2)0,j=K(4)17^K(3)9
> ^k*2-k%8^8,a=0,b=0,c=26;for(s[y]-=16;--c;i/=2,j/=2)a=a*2^i&1,b
> =b*2^j&1;for(j=
> 127;++j<n;c=z+c>y)a^=a>>14,a=a>>8^(y=a^a*8^a<<6)<<9,b=b>>8^(z=
> b^b/8^b>>4^b>>12)
> <<17,i=s[j],i="7Wo~'G_\216"[i&7]+2^"cr3sfw6v;*k+>/n."[i>>4]*2^
> i*257/8,s[j]=i^(i
> &i*2&34)*6^z+c+~y;}}
>
> http://www.theregister.co.uk/content/4/17568.html
>
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: Wed Mar 14 2001 - 19:40:52 CST