Sublime Text plugin that adds simple encryption/decryption with password. Available with CTRL+SHIFT+P as "Eeencode" and "Dddecode"

eeencode.py

# Based on http://stackoverflow.com/a/16321853/1422096
# Added a few things to support UTF8.
#
# Install:
# 1) Put the file in    C:\Users\***\AppData\Roaming\Sublime Text 2\Packages\User
# 2) Add a reference in C:\Users\***\AppData\Roaming\Sublime Text 2\Packages\User\Default.sublime-commands:
#     [{ "caption": "Eeencode", "command": "eeencode" }, { "caption": "Dddecode", "command": "dddecode" }]

import sublime, sublime_plugin

import base64

key = 'abcd1234'

class EeencodeCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        for region in self.view.sel():
            if not region.empty():
                clear = self.view.substr(region)
                clear = base64.urlsafe_b64encode(clear.encode('utf8'))
                enc = []
                for i in range(len(clear)):
                    key_c = key[i % len(key)]
                    enc_c = chr((ord(clear[i]) + ord(key_c)) % 256)
                    enc.append(enc_c)
                s = base64.urlsafe_b64encode("".join(enc))
                self.view.replace(edit, region, s)

class DddecodeCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        for region in self.view.sel():
            if not region.empty():
                enc = str(self.view.substr(region))
                dec = []
                enc = base64.urlsafe_b64decode(enc)
                for i in range(len(enc)):
                    key_c = key[i % len(key)]
                    dec_c = chr((256 + ord(enc[i]) - ord(key_c)) % 256)
                    dec.append(dec_c)
                s = "".join(dec)
                s = base64.urlsafe_b64decode(s).decode('utf8')
                self.view.replace(edit, region, s)