Avoids testing the signature when the id or sig fields are blank

benchmark/src/androidTest/java/com/vitorpamplona/amethyst/benchmark/EventBenchmark.kt

@@ -74,7 +74,7 @@ class EventBenchmark {
         val event = Event.fromJson(msg[2])
         benchmarkRule.measureRepeated {
             // Should pass
-            assertTrue( event.hasVerifedSignature() )
+            assertTrue( event.hasVerifiedSignature() )
         }
     }
 

benchmark/src/androidTest/java/com/vitorpamplona/amethyst/benchmark/GiftWrapReceivingBenchmark.kt

@@ -114,7 +114,7 @@ class GiftWrapReceivingBenchmark {
         )
 
         benchmarkRule.measureRepeated {
-            wrap.hasVerifedSignature()
+            wrap.hasVerifiedSignature()
         }
     }
 

quartz/src/main/java/com/vitorpamplona/quartz/events/Event.kt

@@ -217,8 +217,15 @@ open class Event(
         return "nostr:${toNIP19()}"
     }
 
-    fun hasCorrectIDHash() = id.equals(generateId())
-    fun hasVerifedSignature() = CryptoUtils.verifySignature(Hex.decode(sig), Hex.decode(id), Hex.decode(pubKey))
+    fun hasCorrectIDHash(): Boolean {
+        if (id.isEmpty()) return false
+        return id.equals(generateId())
+    }
+
+    fun hasVerifiedSignature(): Boolean {
+        if (id.isEmpty() || sig.isEmpty()) return false
+        return CryptoUtils.verifySignature(Hex.decode(sig), Hex.decode(id), Hex.decode(pubKey))
+    }
 
     /**
      * Checks if the ID is correct and then if the pubKey's secret key signed the event.
@@ -233,14 +240,14 @@ open class Event(
                 """.trimIndent()
             )
         }
-        if (!hasVerifedSignature()) {
+        if (!hasVerifiedSignature()) {
             throw Exception("""Bad signature!""")
         }
     }
 
     override fun hasValidSignature(): Boolean {
         return try {
-            hasCorrectIDHash() && hasVerifedSignature()
+            hasCorrectIDHash() && hasVerifiedSignature()
         } catch (e: Exception) {
             Log.w("Event", "Event $id does not have a valid signature: ${toJson()}", e)
             false