Contrail reworked and finished

src/commonTest/kotlin/ToolsTest.kt

@@ -1,19 +1,21 @@
 import kotlinx.coroutines.test.runTest
+import net.sergeych.crypto2.Contrail
 import net.sergeych.crypto2.NumericNonce
-import net.sergeych.crypto2.createContrail
 import net.sergeych.crypto2.initCrypto
-import net.sergeych.crypto2.isValidContrail
 import kotlin.test.*
 
 class ToolsTest {
     @Test
     fun testContrails() = runTest {
         initCrypto()
-        val c = createContrail(ubyteArrayOf(1u, 2u, 3u, 4u, 5u))
-        assertEquals(134u, c[0])
-        assertTrue { isValidContrail(c) }
-        c[2] = 11u
-        assertFalse { isValidContrail(c) }
+        val data = ubyteArrayOf(1u, 2u, 3u, 4u, 5u)
+        val c = Contrail.create(data)
+        assertTrue { Contrail.isValid(c) }
+        c[2] = c[2] xor 11u
+        assertFalse { Contrail.isValid(c) }
+        c[2] = c[2] xor 11u
+        assertTrue { Contrail.isValid(c) }
+        assertContentEquals(data,Contrail.unpack(c))
     }
 
     @Test