Onionr/onionr/static-data/default-plugins/encrypt/main.py

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'''
Onionr - Private P2P Communication
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This default plugin allows users to encrypt/decrypt messages without using blocks
'''
'''
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
'''
# Imports some useful libraries
import logger, config, threading, time, datetime, sys, json
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from onionrblockapi import Block
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from onionrutils import stringvalidators, bytesconverter
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from onionrcrypto import encryption, keypair, signing
import onionrexceptions, onionrusers
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import locale
locale.setlocale(locale.LC_ALL, '')
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plugin_name = 'encrypt'
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class PlainEncryption:
def __init__(self, api):
self.api = api
return
def encrypt(self):
# peer, data
plaintext = ""
encrypted = ""
# detect if signing is enabled
sign = True
try:
if sys.argv[3].lower() == 'false':
sign = False
except IndexError:
pass
try:
if not stringvalidators.validate_pub_key(sys.argv[2]):
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raise onionrexceptions.InvalidPubkey
except (ValueError, IndexError) as e:
logger.error("Peer public key not specified", terminal=True)
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except onionrexceptions.InvalidPubkey:
logger.error("Invalid public key", terminal=True)
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else:
pubkey = sys.argv[2]
# Encrypt if public key is valid
logger.info("Please enter your message (ctrl-d or -q to stop):", terminal=True)
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try:
for line in sys.stdin:
if line == '-q\n':
break
plaintext += line
except KeyboardInterrupt:
sys.exit(1)
# Build Message to encrypt
data = {}
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myPub = keypair[0]
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if sign:
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data['sig'] = signing.ed_sign(plaintext, key=keypair[1], encodeResult=True)
data['sig'] = bytesconverter.bytes_to_str(data['sig'])
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data['signer'] = myPub
data['data'] = plaintext
data = json.dumps(data)
plaintext = data
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encrypted = encryption.pub_key_encrypt(plaintext, pubkey, encodedData=True)
encrypted = bytesconverter.bytes_to_str(encrypted)
logger.info('Encrypted Message: \n\nONIONR ENCRYPTED DATA %s END ENCRYPTED DATA' % (encrypted,), terminal=True)
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def decrypt(self):
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plaintext = ""
data = ""
logger.info("Please enter your message (ctrl-d or -q to stop):", terminal=True)
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keypair = getourkeypair.get_our_keypair()
try:
for line in sys.stdin:
if line == '-q\n':
break
data += line
except KeyboardInterrupt:
sys.exit(1)
if len(data) <= 1:
return
encrypted = data.replace('ONIONR ENCRYPTED DATA ', '').replace('END ENCRYPTED DATA', '')
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myPub = keypair[0]
decrypted = encryption.pub_key_decrypt(encrypted, privkey=keypair[1], encodedData=True)
if decrypted == False:
logger.error("Decryption failed", terminal=True)
else:
data = json.loads(decrypted)
logger.info('Decrypted Message: \n\n%s' % data['data'], terminal=True)
try:
logger.info("Signing public key: %s" % (data['signer'],), terminal=True)
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assert signing.ed_verify(data['data'], data['signer'], data['sig']) != False
except (AssertionError, KeyError) as e:
logger.warn("WARNING: THIS MESSAGE HAS A MISSING OR INVALID SIGNATURE", terminal=True)
else:
logger.info("Message has good signature.", terminal=True)
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return
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def on_init(api, data = None):
'''
This event is called after Onionr is initialized, but before the command
inputted is executed. Could be called when daemon is starting or when
just the client is running.
'''
pluginapi = api
encrypt = PlainEncryption(pluginapi)
api.commands.register(['encrypt'], encrypt.encrypt)
api.commands.register(['decrypt'], encrypt.decrypt)
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return