Abstract :
This study aims to build a web service form of cryptographic services that uses the
ROT10 method. This method is adapted from two methods, namely the Yogyakarta-style
inverse language and ROT13 where the letters in the input will only be shifted 10 (ten) times
from the original letter (letter A will become letter K, letter B will become letter L and if for
letter K will be be the letter A and so on). This web service will later be made of the
programming language is a python base expected to be accessible using other programming
languages freely and openly by utilizing a local or interlocal network. Based on testing this
application can run smoothly on the condition that it has a server Xampp, web browser and
internet connection. However, in the encryption process and decryption process in this
application, there are problems if using capital letters and special characters that are not
included in the program, the process will not run