renamed [lib.CyclicHash] to [lib.scha] + renamed [lib.wtime] to [lib.timeid]
This commit is contained in:
parent
6b9fdecfb1
commit
403e3f8538
|
@ -1,4 +1,4 @@
|
|||
package CyclicHash
|
||||
package scha
|
||||
|
||||
import (
|
||||
"errors"
|
||||
|
@ -6,9 +6,9 @@ import (
|
|||
"git.xdrm.io/schastsp/lib/xor"
|
||||
)
|
||||
|
||||
/* (0) Constants
|
||||
/* (0) Static
|
||||
---------------------------------------------------------*/
|
||||
/* (1) Hash size */
|
||||
/* (1) Constants */
|
||||
const HBITSIZE uint = 512;
|
||||
const HSIZE uint = HBITSIZE / 8;
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
package CyclicHash
|
||||
package scha
|
||||
|
||||
import "testing"
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
package wtime
|
||||
package timeid
|
||||
|
||||
import (
|
||||
"math"
|
||||
|
@ -6,40 +6,33 @@ import (
|
|||
)
|
||||
|
||||
|
||||
/* (0) Definitions
|
||||
---------------------------------------------------------*/
|
||||
/* (1) Time ID struct */
|
||||
type TimeID struct { ID uint; Parity uint }
|
||||
|
||||
|
||||
|
||||
/* (1) Generates the current time id
|
||||
*
|
||||
* @wsize<float64> Window Size in seconds
|
||||
*
|
||||
* @return id<uint> Current time id
|
||||
* @return parity<uint> Current time parity
|
||||
*
|
||||
---------------------------------------------------------*/
|
||||
func GenerateID(wsize float64) *TimeID{
|
||||
|
||||
/* (0) Initialise instance */
|
||||
instance := new(TimeID);
|
||||
func Generate(wsize float64) (uint, uint){
|
||||
|
||||
/* (1) If wsize is 0 (div by zero possible error) */
|
||||
if wsize == 0 { return instance }
|
||||
if wsize == 0 { return 0, 0 }
|
||||
|
||||
/* (2) Get current timestamp */
|
||||
timestamp := float64( time.Now().Unix() );
|
||||
|
||||
/* (3) Calculate the time id */
|
||||
instance.ID = uint( timestamp / wsize );
|
||||
var id = uint( timestamp / wsize );
|
||||
|
||||
/* (4) Calculate parity */
|
||||
instance.Parity = instance.ID % 2;
|
||||
var parity = id % 2;
|
||||
|
||||
return instance;
|
||||
return id, parity;
|
||||
}
|
||||
|
||||
|
||||
/* (2) Try to guess the received ID from current time and received parity
|
||||
/* (2) Try to guess a previous time id from its parity
|
||||
*
|
||||
* @wsize<float64> Window Size in seconds
|
||||
* @parity<uint> Received parity
|
||||
|
@ -47,12 +40,12 @@ func GenerateID(wsize float64) *TimeID{
|
|||
* @return id<uint> The guessed time id
|
||||
*
|
||||
---------------------------------------------------------*/
|
||||
func GuessID(wsize float64, parity uint) uint{
|
||||
func Guess(wsize float64, parity uint) uint{
|
||||
|
||||
/* (1) Get current time id */
|
||||
var tidNow *TimeID = GenerateID(wsize);
|
||||
var idNow, parityNow = Generate(wsize);
|
||||
|
||||
/* (2) Update ID with tidNow parity difference */
|
||||
return tidNow.ID - uint(math.Abs( float64(tidNow.Parity) - float64(parity) ));
|
||||
return idNow - uint(math.Abs( float64(parityNow) - float64(parity) ));
|
||||
|
||||
}
|
|
@ -0,0 +1,23 @@
|
|||
package timeid
|
||||
|
||||
import (
|
||||
"time"
|
||||
"testing"
|
||||
)
|
||||
|
||||
|
||||
func TestGuessing(t *testing.T){
|
||||
|
||||
var windowSize float64 = .5;
|
||||
|
||||
id, parity := Generate(windowSize);
|
||||
|
||||
time.Sleep( time.Duration(windowSize) * time.Second);
|
||||
|
||||
var guessedId uint = Guess(windowSize, parity);
|
||||
|
||||
if id != guessedId {
|
||||
t.Errorf("Wrong guessed id, expected '%d' ; got '%d'", id, guessedId);
|
||||
}
|
||||
|
||||
}
|
|
@ -1,23 +0,0 @@
|
|||
package wtime
|
||||
|
||||
import (
|
||||
"time"
|
||||
"testing"
|
||||
)
|
||||
|
||||
|
||||
func TestGuessing(t *testing.T){
|
||||
|
||||
var windowSize float64 = .5;
|
||||
|
||||
var tid *TimeID = GenerateID(windowSize);
|
||||
|
||||
time.Sleep( time.Duration(windowSize) * time.Second);
|
||||
|
||||
var guessedId uint = GuessID(windowSize, tid.Parity);
|
||||
|
||||
if tid.ID != guessedId {
|
||||
t.Errorf("Wrong guessed id, expected '%d' ; got '%d'", tid.ID, guessedId);
|
||||
}
|
||||
|
||||
}
|
Loading…
Reference in New Issue