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Cryptographic Protocol on a PICO

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    ClassDatenowKey2.js
    The random number generator:

    //ClassDatenowKey2.js
//a permutation class
function Perm(n){
 this.N=n;
 this.C=new Uint8Array(n);
}

Perm.prototype.swap=function(i,j){
 var a=0;
 a=this.C[i];
 this.C[i]=this.C[j];
 this.C[j]=a;
};//end swap

//Initialize a random permutation
Perm.prototype.createPerm=function(){
  var i,j;
  var k=this.N;
  E.srand(E.hwRand());
  for(j=0;j<this.N;j++)this.C[j]=j;
  for(i=0;i<(this.N-1);i++){
   j=parseInt((Math.random()*256)%k,10);
   this.swap(i,i+j);
   k--;
  }//next i
};//end createPerm

//Use permutation to relocate bits in E to D
//dir determines the indirection direction
Perm.prototype.doPerm=function(dir,D,E){­
 var i,j,k,m;
 for(i=0;i<this.N/8;i++)D[i]=0;
 for(i=0;i<this.N;i++){
  j=this.C[i];
  k=i%8;
  m=j%8;
  var a=1;
  var b=1;
  a=1<<k;
  b=1<<m;
  if(dir){
   if(E[(i-k)/8]&a) D[(j-m)/8]=D[(j-m)/8]|b;
  }else{
   if(E[(j-m)/8]&b) D[(i-k)/8]=D[(i-k)/8]|a;
  }//end else
 }//next i
};//end doPerm

//Use permutation of length N in E to relocate bytes in C to D
Perm.prototype.doPermBytes=function(dir,­E,C){
 var i,j,k,m;
 for(i=0;i<this.N;i++)D[i]=0;
 for(i=0;i<this.N;i++){
  j=this.C[i];
  if(dir){
   D[i]=E[j];
  }else{
   D[j]=E[i];
  }//end else
 }//next i
};//end doPermBytes
///////////////////////////

//a oneway class

function Oneway(){
 this.A=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]­;
}

Oneway.prototype.oneway1=function(mode,A­,B,C,D,E){
  switch(mode){
    case 0:
     return A+B+C+D+E;
    case 1:
     return A^B^C^D^E;
    case 2:
     return A*B*C*D*E;
  }//end switch
};//end oneway1

Oneway.prototype.modit=function(A){
 for(var i=0;i<16;i++)A[i]=this.A[i]%256;
};//end modit

Oneway.prototype.fillit=function(b){
 for(var i=0;i<16;i++)this.A[i]=b;
};//end fillit

Oneway.prototype.oneway=function(mode,B)­{
  var oneway1=this.oneway1;
//rows
 this.A[0]=oneway1(mode,this.A[0],B[0],B[­1],B[2],B[3]);
 this.A[1]=oneway1(mode,this.A[1],B[4],B[­5],B[6],B[7]);
 this.A[2]=oneway1(mode,this.A[2],B[8],B[­9],B[10],B[11]);
 this.A[3]=oneway1(mode,this.A[3],B[12],B­[13],B[14],B[15]);
//columns
 this.A[4]=oneway1(mode,this.A[4],B[0],B[­4],B[8],B[12]);
 this.A[5]=oneway1(mode,this.A[5],B[1],B[­5],B[9],B[13]);
 this.A[6]=oneway1(mode,this.A[6],B[2],B[­6],B[10],B[14]);
 this.A[7]=oneway1(mode,this.A[7],B[3],B[­7],B[11],B[15]);
//diagonals\
 this.A[8]=oneway1(mode,this.A[8],B[0],B[­5],B[10],B[15]);
 this.A[9]=oneway1(mode,this.A[9],B[1],B[­6],B[11],B[12]);
 this.A[10]=oneway1(mode,this.A[10],B[2],­B[7],B[8],B[13]);
 this.A[11]=oneway1(mode,this.A[11],B[3],­B[4],B[9],B[14]);
//diagonals/
 this.A[12]=oneway1(mode,this.A[12],B[3],­B[6],B[9],B[12]);
 this.A[13]=oneway1(mode,this.A[13],B[0],­B[7],B[10],B[13]);
 this.A[14]=oneway1(mode,this.A[14],B[1],­B[4],B[11],B[14]);
 this.A[15]=oneway1(mode,this.A[15],B[2],­B[5],B[8],B[15]);
};//end oneway

// Random object
// aes1 0= encrypt, 1=decrypt
// aes2 0= encrypt, 1=decrypt
// pdir1 permutation direction 0 or 1
// pdir2 permutation direction 0 or 1
// owtype 0= add, 1= xor, 2=multiply
function Random(aes1,aes2,pdir1,pdir2,owtype){
 this.AES1=aes1;
 this.AES2=aes2;
 this.Pdir1=pdir1;
 this.Pdir2=pdir2;
 this.Owtype=owtype;

 this.ow=new Oneway();
 this.plain=new Uint8Array(16);
 this.R=new ArrayBuffer(16);
 this.perm1=new Perm(128);
 this.key1=new Uint8Array(16);
 this.perm2=new Perm(128);
 this.key2=new Uint8Array(16);
}

Random.prototype.random=function(){
  var a;
var tt=Date.now()*1000000;
for(var i=0;i<16;i++){
 if(i===8)tt=Date.now()*1000000;
 this.R[i]=tt%256;
 tt=tt-this.R[i];
 tt=tt/256;
}//nexti
E.srand(E.hwRand());
this.R[0]=(Math.random()*256)%256;
this.R[8]=(Math.random()*256)%256;
this.R[15]=(Math.random()*256)%256;
//  printit(R);
this.perm1.doPerm(this.Pdir1,this.plain,­this.R);
//printit(plain);
if(this.AES1){this.R=AES.encrypt(this.pl­ain,this.key1);
 }else{
 this.R=AES.decrypt(this.plain,this.key1)­;
}
//printit(this.R);

this.ow.fillit(1);
this.ow.oneway(this.Owtype,this.R);
this.ow.modit(this.R);
//printit(this.R);

this.perm2.doPerm(this.Pdir2,this.plain,­this.R);
//printit(plain);
if(this.AES2){this.R=AES.encrypt(this.pl­ain,this.key2);
 }else{
 this.R=AES.decrypt(this.plain,this.key2)­;
}
//printit(this.R);
 return this.R;
};//end random

Random.prototype.setup_random=function()­{
 for(var i=0;i<16;i++){
  E.srand(E.hwRand());
  this.key1[i]=parseInt((Math.random()*256­),10);
  E.srand(E.hwRand());
  this.key2[i]=parseInt((Math.random()*256­),10);
 }//nexti

 this.perm1.createPerm();
 this.perm2.createPerm();

};
///////////////////////////////

function printit(W){
console.log(W[0]+','+W[1]+','+W[2]+','+W­[3]+','+
            W[4]+','+W[5]+','+W[6]+','+W[7]+','+
            W[8]+','+W[9]+','+W[10]+','+W[11]+','+
            W[12]+','+W[13]+','+W[14]+','+W[15]
           );
}//end printit

function copy(A,B){for(var i=0;i<16;i++)A[i]=B[i];}

function compare(A,B){
 for(var i=0;i<16;i++)if(A[i]!=B[i])return 0;
 return 1;
}
///////////////////////////////
// Random object
// aes1 0= encrypt, 1=decrypt
// aes2 0= encrypt, 1=decrypt
// pdir1 permutation direction 0 or 1
// pdir2 permutation direction 0 or 1
// owtype 0= add, 1= xor, 2=multiply
//function Random(aes1,aes2,pdir1,pdir2,owtype){
var R=new Random(1,1,0,0,0);
R.setup_random();
console.log("keys");
 printit(R.key1);
 printit(R.key2);
 console.log("Enter go(); into left screen, press enter");
function go(){
  R.key1=R.random();
  R.key2=R.random();
  R.key1=R.random();
  R.key2=R.random();
console.log("keys");
 printit(R.key1);
 printit(R.key2);
console.log("Randoms");
for(var j=0;j<16;j++){
 printit(R.random());
}
}//end go

    The output:

    >echo(0);
keys
95,199,130,197,32,174,21,94,190,94,212,0­,219,24,220,209
127,253,226,16,70,146,185,11,202,192,44,­70,83,51,120,177
Enter go(); into left screen, press enter
=undefined
>go();
keys
37,115,239,249,173,235,105,20,202,187,11­9,250,173,235,105,187
194,44,127,205,23,115,36,6,237,95,250,21­0,33,201,23,211
Randoms
142,254,220,240,136,215,19,239,149,77,77­,124,190,204,102,97
172,247,225,194,124,184,176,179,201,85,7­0,33,145,196,50,223
171,173,84,67,240,166,53,84,189,241,190,­160,65,126,46,16
240,110,20,89,34,209,82,26,84,141,66,199­,178,107,45,129
8,76,198,85,81,141,148,70,243,37,27,18,1­01,39,53,75
156,154,240,83,125,40,83,111,48,193,73,9­0,88,52,152,150
132,58,124,16,109,99,134,187,72,139,84,1­09,254,5,163,173
18,166,184,35,1,188,74,73,75,24,107,129,­229,6,203,35
46,71,178,73,32,142,191,110,254,127,233,­195,82,219,214,121
219,68,7,110,28,230,173,64,123,179,128,4­,232,61,157,244
26,86,10,201,79,18,159,126,178,165,128,2­13,0,220,233,219
160,45,66,180,92,106,130,148,224,180,18,­141,20,194,197,167
116,187,81,184,197,46,64,197,107,157,58,­72,70,42,241,205
106,243,200,96,187,42,68,165,111,85,121,­61,150,128,81,63
112,139,103,246,27,71,38,240,100,136,250­,230,24,145,76,69
96,130,236,218,128,193,47,234,34,3,10,30­,130,18,74,154

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