| #!/usr/bin/env python3 |
| |
| import struct |
| import json |
| import base64 |
| import toml |
| import os |
| import time |
| import ssl |
| import socket |
| |
| from cryptography import x509 |
| from cryptography.hazmat.backends import default_backend |
| |
| from OpenSSL.crypto import load_certificate, FILETYPE_PEM, FILETYPE_ASN1 |
| from OpenSSL.crypto import X509Store, X509StoreContext |
| from OpenSSL import crypto |
| |
| |
| class RequestEncoder(json.JSONEncoder): |
| def default(self, o): |
| return o.__dict__ |
| |
| |
| class UserRegisterReqeust: |
| def __init__(self, user_id, user_password): |
| self.request = "user_register" |
| self.id = user_id |
| self.password = user_password |
| |
| |
| class UserLoginRequest: |
| def __init__(self, user_id, user_password): |
| self.request = "user_login" |
| self.id = user_id |
| self.password = user_password |
| |
| |
| class AuthenticationClient: |
| def __init__(self, channel): |
| self.channel = channel |
| |
| def user_register(self, user_id, user_password): |
| request = UserRegisterReqeust(user_id, user_password) |
| write_message(self.channel, request) |
| return read_message(self.channel) |
| |
| def user_login(self, user_id, user_password): |
| request = UserLoginRequest(user_id, user_password) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| return response["content"]["token"] |
| |
| |
| class AuthenticationService: |
| context = ssl._create_unverified_context() |
| |
| def __init__(self, address, as_root_ca_cert_path, enclave_info_path): |
| self.address = address |
| self.as_root_ca_cert_path = as_root_ca_cert_path |
| self.enclave_info_path = enclave_info_path |
| |
| def connect(self): |
| sock = socket.create_connection(self.address) |
| channel = self.context.wrap_socket(sock, |
| server_hostname=self.address[0]) |
| cert = channel.getpeercert(binary_form=True) |
| verify_report(self.as_root_ca_cert_path, self.enclave_info_path, cert, |
| "authentication") |
| |
| return channel |
| |
| |
| class FrontendService: |
| context = ssl._create_unverified_context() |
| |
| def __init__(self, address, as_root_ca_cert_path, enclave_info_path): |
| self.address = address |
| self.as_root_ca_cert_path = as_root_ca_cert_path |
| self.enclave_info_path = enclave_info_path |
| |
| def connect(self): |
| sock = socket.create_connection(self.address) |
| channel = self.context.wrap_socket(sock, |
| server_hostname=self.address[0]) |
| cert = channel.getpeercert(binary_form=True) |
| verify_report(self.as_root_ca_cert_path, self.enclave_info_path, cert, |
| "frontend") |
| |
| return channel |
| |
| |
| class RegisterFunctionRequest: |
| def __init__(self, metadata, name, description, executor_type, public, |
| payload, arguments, inputs, outputs): |
| self.request = "register_function" |
| self.metadata = metadata |
| self.name = name |
| self.description = description |
| self.executor_type = executor_type |
| self.public = public |
| self.payload = payload |
| self.arguments = arguments |
| self.inputs = inputs |
| self.outputs = outputs |
| |
| |
| class RegisterInputFileRequest: |
| def __init__(self, metadata, url, cmac, crypto_info): |
| self.request = "register_input_file" |
| self.metadata = metadata |
| self.url = url |
| self.cmac = cmac |
| self.crypto_info = crypto_info |
| |
| |
| class RegisterOutputFileRequest: |
| def __init__(self, metadata, url, crypto_info): |
| self.request = "register_output_file" |
| self.metadata = metadata |
| self.url = url |
| self.crypto_info = crypto_info |
| |
| class UpdateInputFileRequest: |
| def __init__(self, metadata, data_id, url): |
| self.request = "update_input_file" |
| self.metadata = metadata |
| self.data_id =data_id |
| self.url = url |
| |
| |
| class UpdateOutputFileRequest: |
| def __init__(self, metadata, data_id, url): |
| self.request = "update_output_file" |
| self.metadata = metadata |
| self.data_id =data_id |
| self.url = url |
| |
| class CreateTaskRequest: |
| def __init__(self, metadata, function_id, function_arguments, executor, |
| inputs_ownership, outputs_ownership): |
| self.request = "create_task" |
| self.metadata = metadata |
| self.function_id = function_id |
| self.function_arguments = function_arguments |
| self.executor = executor |
| self.inputs_ownership = inputs_ownership |
| self.outputs_ownership = outputs_ownership |
| |
| |
| class AssignDataRequest: |
| def __init__(self, metadata, task_id, inputs, outputs): |
| self.request = "assign_data" |
| self.metadata = metadata |
| self.task_id = task_id |
| self.inputs = inputs |
| self.outputs = outputs |
| |
| |
| class ApproveTaskRequest: |
| def __init__(self, metadata, task_id): |
| self.request = "approve_task" |
| self.metadata = metadata |
| self.task_id = task_id |
| |
| |
| class InvokeTaskRequest: |
| def __init__(self, metadata, task_id): |
| self.request = "invoke_task" |
| self.metadata = metadata |
| self.task_id = task_id |
| |
| |
| class GetTaskRequest: |
| def __init__(self, metadata, task_id): |
| self.request = "get_task" |
| self.metadata = metadata |
| self.task_id = task_id |
| |
| |
| class TeaclaveFile128Key: |
| def __init__(self, schema, key, iv): |
| self.schema = schema |
| self.key = key |
| self.iv = iv |
| |
| |
| class FrontendClient: |
| def __init__(self, channel, metadata): |
| self.channel = channel |
| self.metadata = metadata |
| |
| def register_function(self, |
| name, |
| description, |
| executor_type, |
| public=True, |
| payload=[], |
| arguments=[], |
| inputs=[], |
| outputs=[]): |
| request = RegisterFunctionRequest(self.metadata, name, description, |
| executor_type, public, payload, |
| arguments, inputs, outputs) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| return response["content"]["function_id"] |
| |
| def register_input_file(self, url, schema, key, iv, cmac): |
| request = RegisterInputFileRequest(self.metadata, url, cmac, |
| TeaclaveFile128Key(schema, key, iv)) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| return response["content"]["data_id"] |
| |
| def register_output_file(self, url, schema, key, iv): |
| request = RegisterOutputFileRequest( |
| self.metadata, url, TeaclaveFile128Key(schema, key, iv)) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| return response["content"]["data_id"] |
| |
| def create_task(self, |
| function_id, |
| function_arguments, |
| executor, |
| inputs_ownership=[], |
| outputs_ownership=[]): |
| function_arguments = json.dumps(function_arguments) |
| request = CreateTaskRequest(self.metadata, function_id, |
| function_arguments, executor, |
| inputs_ownership, outputs_ownership) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| return response["content"]["task_id"] |
| |
| def assign_data_to_task(self, task_id, inputs, outputs): |
| request = AssignDataRequest(self.metadata, task_id, inputs, outputs) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| return |
| |
| def approve_task(self, task_id): |
| request = ApproveTaskRequest(self.metadata, task_id) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| return |
| |
| def invoke_task(self, task_id): |
| request = InvokeTaskRequest(self.metadata, task_id) |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| assert (response["result"] == "ok") |
| |
| def get_task_result(self, task_id): |
| request = GetTaskRequest(self.metadata, task_id) |
| |
| while True: |
| write_message(self.channel, request) |
| response = read_message(self.channel) |
| time.sleep(1) |
| if response["content"]["status"] == 10: |
| break |
| |
| return response["content"]["result"]["result"]["Ok"]["return_value"] |
| |
| |
| def write_message(sock, message): |
| message = json.dumps(message, cls=RequestEncoder).encode() |
| sock.write(struct.pack(">Q", len(message))) |
| sock.write(message) |
| |
| |
| def read_message(sock): |
| response_len = struct.unpack(">Q", sock.read(8)) |
| response = sock.read(response_len[0]) |
| response = json.loads(response) |
| return response |
| |
| |
| def verify_report(as_root_ca_cert_path, enclave_info_path, cert, |
| endpoint_name): |
| if os.environ.get('SGX_MODE') == 'SW': |
| return |
| |
| cert = x509.load_der_x509_certificate(cert, default_backend()) |
| ext = json.loads(cert.extensions[0].value.value) |
| |
| report = bytes(ext["report"]) |
| signature = bytes(ext["signature"]) |
| signing_cert = bytes(ext["signing_cert"]) |
| signing_cert = load_certificate(FILETYPE_ASN1, signing_cert) |
| |
| # verify signing cert with AS root cert |
| with open(as_root_ca_cert_path) as f: |
| as_root_ca_cert = f.read() |
| as_root_ca_cert = load_certificate(FILETYPE_PEM, as_root_ca_cert) |
| store = X509Store() |
| store.add_cert(as_root_ca_cert) |
| store.add_cert(signing_cert) |
| store_ctx = X509StoreContext(store, as_root_ca_cert) |
| store_ctx.verify_certificate() |
| |
| # verify report's signature |
| crypto.verify(signing_cert, signature, bytes(ext["report"]), 'sha256') |
| |
| report = json.loads(report) |
| quote = report['isvEnclaveQuoteBody'] |
| quote = base64.b64decode(quote) |
| |
| # get mr_enclave and mr_signer from the quote |
| mr_enclave = quote[112:112 + 32].hex() |
| mr_signer = quote[176:176 + 32].hex() |
| |
| # get enclave_info |
| enclave_info = toml.load(enclave_info_path) |
| |
| # verify mr_enclave and mr_signer |
| enclave_name = "teaclave_" + endpoint_name + "_service" |
| if mr_enclave != enclave_info[enclave_name]["mr_enclave"]: |
| raise Exception("mr_enclave error") |
| |
| if mr_signer != enclave_info[enclave_name]["mr_signer"]: |
| raise Exception("mr_signer error") |
