def setup():
global config
config = uconfig.set_default_curve()
global mock_kms
mock_kms = MockNetwork()
global api
api = ipfsapi.connect('127.0.0.1', 5001)
def setup(): # Setup pyUmbral global config config = uconfig.set_default_curve() global mock_kms mock_kms = MockNetwork() global r r = redis.Redis(host='localhost', port=6379, db=0)
def setup():
# Setup pyUmbral
global config
config = uconfig.set_default_curve()
global mock_kms
mock_kms = MockNetwork()
global bob_privkey
bob_privkey = keys.UmbralPrivateKey.gen_key()
global bob_pubkey
bob_pubkey = bob_privkey.get_pubkey()
def main(m, n, filenames):
files = [open(filename, 'w') for filename in filenames]
config.set_default_curve()
alice_privkey = keys.UmbralPrivateKey.gen_key()
alice_pubkey = alice_privkey.get_pubkey()
bob_privkey = keys.UmbralPrivateKey.gen_key()
bob_pubkey = bob_privkey.get_pubkey()
mock_kms = MockNetwork()
sys.stderr.write('Server with PID %s is ready to pipe messages.\n' % os.getpid())
for line in sys.stdin:
ciphertext, capsule = pre.encrypt(alice_pubkey, line.rstrip('\n').encode('utf8'))
alice_kfrags = pre.split_rekey(alice_privkey, bob_pubkey, m, n)
policy_id = mock_kms.grant(alice_kfrags)
bob_cfrags = mock_kms.reencrypt(policy_id, capsule, m)
bob_capsule = capsule
for cfrag in bob_cfrags:
bob_capsule.attach_cfrag(cfrag)
decrypted = pre.decrypt(ciphertext, bob_capsule, bob_privkey, alice_pubkey)
for file in files:
file.write('%s\n' % decrypted.decode('utf8'))
file.flush()
mock_kms.revoke(policy_id)
# 1. Setup pyUmbral config.set_default_curve() # 2. Generate Keys and setup mock network alice_privkey = keys.UmbralPrivateKey.gen_key() alice_pubkey = alice_privkey.get_pubkey() alice_signing_privkey = keys.UmbralPrivateKey.gen_key() alice_signing_pubkey = alice_signing_privkey.get_pubkey() alice_signer = Signer(alice_signing_privkey) bob_privkey = keys.UmbralPrivateKey.gen_key() bob_pubkey = bob_privkey.get_pubkey() mock_kms = MockNetwork() # 3. Encrypt some data plaintext = b'attack at dawn!' ciphertext, capsule = pre.encrypt(alice_pubkey, plaintext) # 4. Perform split-rekey and grant re-encryption policy alice_kfrags = pre.split_rekey(alice_privkey, alice_signer, bob_pubkey, 10, 20) assert len(alice_kfrags) == 20 policy_id = mock_kms.grant(alice_kfrags) assert type(policy_id) == str # 5. Perform re-encryption request bob_capsule = capsule bob_capsule.set_correctness_keys(alice_pubkey, bob_pubkey, alice_signing_pubkey)
from flask import Flask, render_template, request, url_for, jsonify
import json
app = Flask(__name__)
# pyUmbral encryption script
# https://github.com/nucypher/pyUmbral
# invoked from nodejs server.
import sys
from nucypher import MockNetwork
from umbral import pre, keys, config
UNDEFINED_MESSAGE = "command undefined"
# Setup pyUmbral
config.set_default_curve()
mock_kms = MockNetwork()
def encrypt_and_save(file_content, file_name, key):
# Convert to UTF-8 bytes if not already in bytes format.
# if not isinstance(file_content, (bytes, bytearray)):
# file_content = str(file_content).encode('utf-8')
# TODO: pass keys in as params.
priv_key = keys.UmbralPrivateKey.gen_key()
pub_key = priv_key.get_pubkey()
# Encrypt file data with public key.
ciphertext, capsule = pre.encrypt(pub_key, file_content)
# Save file locally on the server.
from umbral import pre, keys, config
import argparse
import sys
import os
def main(m, n, fileNames):files = [open(fileName, 'w') for fileName in fileNames]
config.set_default_curve()
MDPrivateKey = keys.UmbralPrivateKey.gen_key()
MDPublicKey = MDPrivateKey.get_pubkey()
PacientPrivateKey = keys.UmbralPrivateKey.gen_key()
PacientPublicKey = PacientPrivateKey.get_pubkey()
mock_kms = MockNetwork()
sys.stderr.write('Server is ready.\n' % os.getpid())
for line in sys.stdin:
cipText, capsule = pre.encrypt(MDPublicKey, line.rstrip('\n').encode('utf8'))
MDkfrags = pre.split_rekey(MDPrivateKey, PacientPrivateKey, m, n)
policy_id = mock_kms.grant(MDkfrags)
pacientCfrags = mock_kms.reencrypt(policy_id, capsule, m)
pacientCapsule = capsule
for cfrag in pacientCfrags:
pacientCapsule.attach_cfrag(cfrag)
decrypted = pre.decrypt(cipText, pacientCapsule, PacientPublicKey, MDPublicKey)
for file in files:
file.write('%s\n' % decrypted.decode('utf8'))