randomizing two bits on the client see PR #39 and issue #38

Author: jmwample

tapdance/common.go

@@ -206,6 +206,6 @@ func generateEligatorTransformedKey(stationPubkey []byte) ([]byte, []byte, error
 	if err != nil {
 		return nil, nil, err
 	}
-	representative[31] |= (0x80 & randByte[0])
+	representative[31] |= (0xC0 & randByte[0])
 	return sharedSecret[:], representative[:], nil
 }

tapdance/utils_test.go

@@ -163,10 +163,6 @@ func (rt *randomnessChecker) testInRange(min, max int) error {
 	numSamples := rt.getNumSamples()
 	for i := 0; i < numSamples; i++ {
 
-		if i == 254 {
-			continue
-		}
-
 		if rt.bitCounts[i] < min || rt.bitCounts[i] > max {
 			return errors.New(fmt.Sprintf("Expected: bit #%v is set %v - %v times"+
 				" out of %v samples. Got: bit is set %v times.",