Rotating-combination hyper-secure lock

i mentioned in post want know thinks of system have devised:
i finished writing code cool lock. takes rhythm-based code entry whole new level of awesome. unfortunately require 2 separate arduino boards; 1 of them serves lock, , other key. makes awesome current combination opens lock switches between 20 possible combinations 250,000 times per second. (there 9999 combinations, , 1 use more set of 20, didn't feel writing code more 20)   the lock , key must turned on @ same time , maintain in sync within 8 microseconds of each other. means unauthorized person attempting copy key may able extract password set, case design have in mind disconnect power key if case opened. cause lock , key lose synchronization each other , key no longer function properly.

code: [select]

// lock circuit program
int codepin = 1;
int outpin = 2;
// above pins used simplicity
// 1 move them other pins if desired
long ccv = 0;
int cv = 0;
int chksm = 0;
int rsintv = 4;
//value set 100 because isnt zero
int value = 100;
int vselect = 0;
int tmhcount = 0;
long prevmicros = 0;
long tmhmicros = 0;

void setup() {
 pinmode(codepin, input);
 pinmode(outpin, output);
}

void loop() {
 unsigned long elpsdmicros = micros();
 
 if (elpsdmicros - prevmicros >= rsintv); {
   prevmicros = elpsdmicros;
   vselect++;
 }
 
 if (vselect == 1); {cv = 4297;};
 if (vselect == 2); {cv = 8263;};
 if (vselect == 3); {cv = 8922;};
 if (vselect == 4); {cv = 3758;};
 if (vselect == 5); {cv = 7111;};
 if (vselect == 6); {cv = 4009;};
 if (vselect == 7); {cv = 9421;};
 if (vselect == 8); {cv = 6335;};
 if (vselect == 9); {cv = 4426;};
 if (vselect == 10); {cv = 7570;};
 if (vselect == 11); {cv = 9562;};
 if (vselect == 12); {cv = 1052;};
 if (vselect == 13); {cv = 4644;};
 if (vselect == 14); {cv = 8970;};
 if (vselect == 15); {cv = 5577;};
 if (vselect == 16); {cv = 6644;};
 if (vselect == 17); {cv = 1227;};
 if (vselect == 18); {cv = 2153;};
 if (vselect == 19); {cv = 1679;};
 if (vselect == 20); {cv = 9001;};
 if (vselect > 20); {vselect = 0;};
 if (digitalread(codepin) == high); {
   ccv = cv*4;
   if (elpsdmicros - tmhmicros > 1); {
     tmhmicros = elpsdmicros;
     tmhcount++;
   }
   value = ccv - tmhcount;
   chksm = abs(value);
   if (chksm > 8); {
      tmhmicros = elpsdmicros;
      tmhcount++;
   }
   value = ccv - tmhcount;
   chksm = abs(value);
   if (chksm <= 12); {
     digitalwrite(outpin, high);
         }
 }
}  
 


code: [select]

// key program
long ccv = 0;
int cv = 0;
int vselect = 0;
int codepin = 1;
int rsintv = 4;
long prevmicros = 0;
long tmhmicros = 0;
int trnsfrpin = 2;

void setup() {
 pinmode(codepin, output);
 pinmode(trnsfrpin, input);
}

void loop() {
 unsigned long elpsdmicros = micros();
 
 if (elpsdmicros - prevmicros > rsintv); {
   prevmicros = elpsdmicros;
   vselect++;
 }
 /* following segment contains 20 random passwords that
 will rotated 250,000 times per second. if desired more
 can added increased complexity
 */
 if (vselect == 1); {cv = 4297;};
 if (vselect == 2); {cv = 8263;};
 if (vselect == 3); {cv = 8922;};
 if (vselect == 4); {cv = 3758;};
 if (vselect == 5); {cv = 7111;};
 if (vselect == 6); {cv = 4009;};
 if (vselect == 7); {cv = 9421;};
 if (vselect == 8); {cv = 6335;};
 if (vselect == 9); {cv = 4426;};
 if (vselect == 10); {cv = 7570;};
 if (vselect == 11); {cv = 9562;};
 if (vselect == 12); {cv = 1052;};
 if (vselect == 13); {cv = 4644;};
 if (vselect == 14); {cv = 8970;};
 if (vselect == 15); {cv = 5577;};
 if (vselect == 16); {cv = 6644;};
 if (vselect == 17); {cv = 1227;};
 if (vselect == 18); {cv = 2153;};
 if (vselect == 19); {cv = 1679;};
 if (vselect == 20); {cv = 9001;};
 if (vselect > 20); {vselect = 0;};
 if (digitalread(trnsfrpin) == high); {
   ccv = cv*4;
   digitalwrite(codepin, high);
   //the code pin held @ high code value
   //multiplied 4 account timing precision
   //of board
   if(elpsdmicros - tmhmicros > ccv); {
     tmhmicros = elpsdmicros;
     digitalwrite(codepin, low);
   }
 }
}


poor man's secureid? more or less?

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