Fix decryption bug

weather-sensor/firmware/encryption.c

@@ -65,7 +65,7 @@ void Decrypt(uint32_t * data, uint8_t dataLength, uint64_t salt, const uint32_t
 
 		/* Setup for next block */
 		currentCipherBlock = previousCipherBlock;
-		if (previousCipherBlock != (uint8_t*) data)
+		if (previousCipherBlock != (uint8_t*) data + LENGTH_OF_BLOCK)
 		{
 			previousCipherBlock -= LENGTH_OF_BLOCK;
 		}