plugin:adding did plugin support in indy-plenum

Signed-off-by: Atharva Amritkar <atharvaamritkar0@gmail.com>

plenum/server/plugin/did_plugin/Functionalities/OU_DID.py

@@ -0,0 +1,63 @@
+import json
+import base64
+from nacl.signing import VerifyKey
+from nacl.exceptions import BadSignatureError
+
+"""
+1. The function wil recieve REQUEST_BODY somehow
+2. The REQUEST_BODY will have `DIDDocment`which will have all the info....
+3. I will get `publicKeyMultibase` for verification purposes.
+4. Now get the `VerificationKey` and `Signature` from REQUEST_BODY.
+5. Then tried to verify it....
+"""
+
+request = {
+    "identifier": "EbP4aYNeTHL6q385GuVpRV",
+    "operation": {
+        "dest": "Vzfdscz6YG6n1EuNJV4ob1",
+        "type": "20226",
+        "data": {
+            "DIDDocument": {
+                "id": "did:exampleiin:org1",
+                "verificationMethod": [
+                    {
+                        "id": "did:exampleiin:org1#key1",
+                        "type": "Ed25519VerificationKey2020",
+                        "controller": "did:exampleiin:org1",
+                        "publicKeyMultibase": "zH3C2AVvLMv6gmMNam3uVAjZpfkcJCwDwnZn6z3wXmqPV"
+                    }
+                ],
+                "authentication": ["did:exampleiin:org1"] 
+            },
+            "signature": {
+                "verificationMethod": "did:exampleiin:org1#key1",
+                "sigbase64": "sdfsdfsdf"
+            }
+        },
+        "verkey": "~HFPBKb7S7ocrTzxakNbcao"
+    },
+    "protocolVersion": 2,
+    "reqId": 1704282737760629997
+}
+
+# Get DID document  
+did_doc = json.loads(request["operation"]["data"]["DIDDocument"])
+
+# Get public key from DID document
+key_id = "did:exampleiin:org1#key1" 
+public_key = did_doc["verificationMethod"][0]["publicKeyMultibase"]
+
+# Load public key
+verify_key = VerifyKey(base64.standard_b64decode(public_key))
+
+# Get signature  
+signature = base64.standard_b64decode(request["operation"]["data"]["signature"]["sigbase64"])
+
+# Get signed data
+signed_data = json.dumps(did_doc)
+
+try:
+    verify_key.verify(signed_data.encode(), signature)
+    print("Signature is valid!")
+except BadSignatureError: 
+    print("Invalid signature!")

plenum/server/plugin/did_plugin/__init__.py

@@ -0,0 +1,20 @@
+from plenum.common.messages.fields import FixedLengthField
+from plenum.server.plugin.did_plugin.transactions import DemoTransactions
+from plenum.server.plugin.did_plugin.constants import DID_PLUGIN_LEDGER_ID
+
+
+dummy_field_length = 10
+LEDGER_IDS = {DID_PLUGIN_LEDGER_ID, }
+CLIENT_REQUEST_FIELDS = {'fix_length_dummy':
+                         FixedLengthField(dummy_field_length,
+                         optional=True, nullable=True)}
+
+AcceptableWriteTypes = {DemoTransactions.CREATE_DID.value,
+                        DemoTransactions.CREATE_NETWORK_DID.value,
+                        DemoTransactions.UPDATE_DID.value,
+                        DemoTransactions.UPDATE_NETWORK_DID.value,
+                        DemoTransactions.DEACTIVATE_DID.value,
+                        DemoTransactions.OUDID.value
+}
+
+AcceptableQueryTypes = {DemoTransactions.FETCH_DID.value, }

plenum/server/plugin/did_plugin/batch_handlers/did_plugin_batch_handler.py

@@ -0,0 +1,16 @@
+from plenum.common.constants import DOMAIN_LEDGER_ID
+from plenum.server.batch_handlers.batch_request_handler import BatchRequestHandler
+from plenum.server.database_manager import DatabaseManager
+from plenum.server.plugin.did_plugin import DID_PLUGIN_LEDGER_ID
+
+
+class DIDBatchHandler(BatchRequestHandler):
+
+    def __init__(self, database_manager: DatabaseManager):
+        super().__init__(database_manager, DID_PLUGIN_LEDGER_ID)
+
+    def post_batch_applied(self, three_pc_batch, prev_handler_result=None):
+        pass
+
+    def post_batch_rejected(self, ledger_id, prev_handler_result=None):
+        pass

plenum/server/plugin/did_plugin/common.py

@@ -0,0 +1,191 @@
+import json
+import libnacl
+import libnacl.encode
+from plenum.common.exceptions import InvalidSignature
+
+def libnacl_validate(vk_base64, signature_base64, originalhash):
+    vk = libnacl.encode.base64_decode(vk_base64)
+    signature = libnacl.encode.base64_decode(signature_base64)
+    verifiedhash = libnacl.crypto_sign_open(signature, vk)
+    if signature == originalhash:
+        raise InvalidSignature("The hash of the DIDDocument did not match.")
+# 
+def libnacl_validate2(vk_base64, signature_base64):
+    print("vk_base64", vk_base64)
+    print("signature_base64", signature_base64)
+    # vk = libnacl.encode.base64_decode(vk_base64)
+    # signature = libnacl.encode.base64_decode(signature_base64)
+    # verifiedhash = libnacl.crypto_sign_open(signature, vk)
+    return signature_base64
+
+def did_id_from_url(did_url: str) -> str:
+    return did_url.split("#")[0]
+
+
+class DID:
+    did = None
+    id = None
+    verification_methods = None
+    authentication_methods = None
+
+    def __init__(self, did_json) -> None:
+        self.did = json.loads(did_json)
+        self.id = self.did["id"]
+
+        # populate verification methods:
+        self.verification_methods = {}
+        for method in self.did["verificationMethod"]:
+            self.verification_methods[method["id"]] = method
+
+        # populate authentication methods:
+        self.authentication_methods = {}
+        for method in self.did["authentication"]:
+            if isinstance(method, dict):
+                # fully specified method
+                self.authentication_methods[method["id"]] = method
+            elif isinstance(method, str):
+                # id points to a verification method
+                # TODO: if it points to a different did -> resolve that did and fetch method
+                if method in self.verification_methods:
+                    self.authentication_methods[method] = self.verification_methods[method]
+# [{'controller': 'did:exampleiin:org1', 'id': 'did:exampleiin:org1#key1', 'publicKeyMultibase': '4PS3EDQ3dW1tci1Bp6543CfuuebjFrg36kLAUcskGfaA', 'type': 'libnacl'}]}
+    def fetch_authentication_method(self, authentication_method_id: str) -> dict:
+        # if authentication_method_id in self.authentication_methods:
+        #     return self.authentication_methods[authentication_method_id]
+        return authentication_method_id[0]
+
+    def fetch_authentication(self, authentication_method_id: str) -> dict:
+        if authentication_method_id in self.authentication_methods:
+            return self.authentication_methods[authentication_method_id]
+        return None
+
+
+
+class NetworkDID:
+    did = None
+    id = None
+    verification_methods = None
+    authentication_methods = None
+    network_participants: list = None
+
+    def __init__(self, did_json) -> None:
+        self.did = json.loads(did_json)
+        self.id = self.did["id"]
+        self.network_participants = self.did["networkMembers"]
+
+        assert(len(self.network_participants) > 0)
+
+        # populate verification methods:
+        self.verification_methods = {}
+        for method in self.did["verificationMethod"]:
+            self.verification_methods[method["id"]] = method
+
+        # populate authentication methods:
+        self.authentication_methods = {}
+        for method in self.did["authentication"]:
+            if isinstance(method, dict):
+                # fully specified method
+                self.authentication_methods[method["id"]] = method
+            elif isinstance(method, str):
+                # id points to a verification method
+                # TODO: if it points to a different did -> resolve that did and fetch method
+                if method in self.verification_methods:
+                    self.authentication_methods[method] = self.verification_methods[method]
+
+        # ensure atleast one authentication method of type GroupMultiSig
+        group_multisig_auth_support = False
+        for method_id, method in self.authentication_methods.items():
+            if method["type"] == "BlockchainNetworkMultiSig":
+                group_multisig_auth_support = True
+        if not group_multisig_auth_support:
+            raise Exception("Network DID does not have BlockchainNetworkMultiSig authentication method")
+
+    # Get any one authentication method of type GroupMultiSig
+    def fetch_authentication_method(self) -> dict:
+        for method_id, method in self.authentication_methods.items():
+            if method["type"] == "BlockchainNetworkMultiSig":
+                return method
+
+    def fetch_signature(self) -> dict:
+
+
+
+
+class OUDID:
+    did = None
+    id = None
+    verification_methods = None
+    authentication_methods = None
+
+    def __init__(self, did_json) -> None:
+        self.did = json.loads(did_json)
+        self.id = self.did["id"]
+
+        # populate verification methods:
+        self.verification_methods = {}
+        for method in self.did["verificationMethod"]:
+            self.verification_methods[method["id"]] = method
+
+        # "authentication": ["did:<method-name>:<method-specific-id>"]
+        # populate authentication methods:
+        self.authentication_methods = {}
+        for method in self.did["authentication"]:
+            if isinstance(method, dict):
+                # fully specified method
+                self.authentication_methods[method["id"]] = method
+            elif isinstance(method, str):
+                # id points to a verification method
+                # TODO: if it points to a different did -> resolve that did and fetch method
+                if method in self.verification_methods:
+                    self.authentication_methods[method] = self.verification_methods[method]
+
+    def fetch_authentication_method(self) -> dict:
+        if authentication_method_id in self.authentication_methods:
+            return self.authentication_methods[authentication_method_id]
+        return None
+
+
+class SDDID:
+    did = None
+    id = None
+    verification_methods = None
+    authentication_methods = None
+    network_participants: list = None
+
+    def __init__(self, did_json) -> None:
+        self.did = json.loads(did_json)
+        self.id = self.did["id"]
+        self.network_participants = self.did["networkMembers"]
+
+        assert(len(self.network_participants) > 0)
+
+        # populate verification methods:
+        self.verification_methods = {}
+        for method in self.did["verificationMethod"]:
+            self.verification_methods[method["id"]] = method
+
+        # populate authentication methods:
+        self.authentication_methods = {}
+        for method in self.did["authentication"]:
+            if isinstance(method, dict):
+                # fully specified method
+                self.authentication_methods[method["id"]] = method
+            elif isinstance(method, str):
+                # id points to a verification method
+                # TODO: if it points to a different did -> resolve that did and fetch method
+                if method in self.verification_methods:
+                    self.authentication_methods[method] = self.verification_methods[method]
+
+        # ensure atleast one authentication method of type BlockchainNetworkMultiSig
+        group_multisig_auth_support = False
+        for method_id, method in self.authentication_methods.items():
+            if method["type"] == "BlockchainNetworkMultiSig":
+                group_multisig_auth_support = True
+        if not group_multisig_auth_support:
+            raise Exception("Network DID does not have BlockchainNetworkMultiSig authentication method")
+
+    # Get any one authentication method of type BlockchainNetworkMultiSig
+    def fetch_authentication_method(self) -> dict:
+        for method_id, method in self.authentication_methods.items():
+            if method["type"] == "BlockchainNetworkMultiSig":
+                return method

plenum/server/plugin/did_plugin/config.py

@@ -0,0 +1,8 @@
+from plenum.common.constants import KeyValueStorageType
+
+
+def get_config(config):
+    config.didPluginTransactionsFile = 'did_plugin_transactions'
+    config.didPluginStateStorage = KeyValueStorageType.Leveldb
+    config.didPluginStateDbName = 'did_plugin_state'
+    return config

plenum/server/plugin/did_plugin/conftest.py

@@ -0,0 +1,82 @@
+import importlib
+
+import pytest
+from copy import deepcopy
+
+from plenum import setup_plugins, PLUGIN_LEDGER_IDS, PLUGIN_CLIENT_REQUEST_FIELDS
+from plenum.common.pkg_util import update_module_vars
+from plenum.server.plugin.did_plugin import AUCTION_LEDGER_ID
+from plenum.server.plugin.did_plugin.main import integrate_plugin_in_node
+
+
+def do_plugin_initialisation_for_tests():
+    # The next imports and reloading are needed only in tests, since in
+    # production none of these modules would be loaded before plugins are
+    # setup (not initialised)
+    import plenum.server
+    import plenum.common
+
+    importlib.reload(plenum.server.replica)
+    importlib.reload(plenum.server.consensus.view_change_trigger_service)
+    importlib.reload(plenum.server.consensus.view_change_service)
+    importlib.reload(plenum.server.consensus.view_change_storages)
+    importlib.reload(plenum.server.consensus.ordering_service)
+    importlib.reload(plenum.server.consensus.ordering_service_msg_validator)
+    importlib.reload(plenum.server.node)
+    importlib.reload(plenum.server.catchup.utils)
+    importlib.reload(plenum.server.catchup.catchup_rep_service)
+    importlib.reload(plenum.server.catchup.cons_proof_service)
+    importlib.reload(plenum.server.catchup.ledger_leecher_service)
+    importlib.reload(plenum.server.catchup.node_leecher_service)
+    importlib.reload(plenum.server.catchup.seeder_service)
+    importlib.reload(plenum.server.message_handlers)
+    importlib.reload(plenum.server.observer.observable)
+    importlib.reload(plenum.common.ledger_manager)
+
+
+@pytest.fixture(scope="module")
+def tconf(tconf, request):
+    global PLUGIN_LEDGER_IDS, PLUGIN_CLIENT_REQUEST_FIELDS
+
+    orig_plugin_root = deepcopy(tconf.PLUGIN_ROOT)
+    orig_enabled_plugins = deepcopy(tconf.ENABLED_PLUGINS)
+    orig_plugin_ledger_ids = deepcopy(PLUGIN_LEDGER_IDS)
+    orig_plugin_client_req_fields = deepcopy(PLUGIN_CLIENT_REQUEST_FIELDS)
+
+    update_module_vars('plenum.config',
+                       **{
+                           'PLUGIN_ROOT': 'plenum.test.plugin',
+                           'ENABLED_PLUGINS': ['demo_plugin', ],
+                       })
+    PLUGIN_LEDGER_IDS = {AUCTION_LEDGER_ID}
+    PLUGIN_CLIENT_REQUEST_FIELDS = {}
+    setup_plugins()
+    do_plugin_initialisation_for_tests()
+
+    def reset():
+        global PLUGIN_LEDGER_IDS, PLUGIN_CLIENT_REQUEST_FIELDS
+        update_module_vars('plenum.config',
+                           **{
+                               'PLUGIN_ROOT': orig_plugin_root,
+                               'ENABLED_PLUGINS': orig_enabled_plugins,
+                           })
+        PLUGIN_LEDGER_IDS = orig_plugin_ledger_ids
+        PLUGIN_CLIENT_REQUEST_FIELDS = orig_plugin_client_req_fields
+        setup_plugins()
+
+    request.addfinalizer(reset)
+    return tconf
+
+
+@pytest.fixture(scope="module")
+def do_post_node_creation():
+    # Integrate plugin into each node.
+    def _post_node_creation(node):
+        integrate_plugin_in_node(node)
+
+    return _post_node_creation
+
+
+@pytest.fixture(scope="module")
+def txn_pool_node_set_post_creation(tconf, do_post_node_creation, txnPoolNodeSet):
+    return txnPoolNodeSet