diff --git a/delivery2/client/bin/rep_create_session b/delivery2/client/bin/rep_create_session
index ea3d781..d16b32d 100755
--- a/delivery2/client/bin/rep_create_session
+++ b/delivery2/client/bin/rep_create_session
@@ -1,10 +1,14 @@
 #!/bin/python3
+import base64
 import os
 import sys
 import argparse
 import logging
 import json
 import requests
+from cryptography.hazmat.primitives.serialization import load_pem_private_key
+from cryptography.hazmat.primitives.asymmetric import padding
+from cryptography.hazmat.primitives import hashes
 
 from subject import main
 
@@ -36,15 +40,15 @@ def createSession(args):
 
     args = parser.parse_args()
 
-    if not args.org or not args.username or not args.password or not args.credentials or not args.session:
-        logger.error("Need organization, username, password, credentials and session file")
+    if not args.org or not args.username or not args.credentials or not args.session:
+        logger.error("Need organization, username, credentials and session file")
         sys.exit(1)
 
-    if (not os.path.isfile(BASE_DIR + args.credentials)):
+    if not os.path.isfile(BASE_DIR + args.credentials):
         logger.error("File '" + args.credentials + "' not found.")
         sys.exit(1)
     
-    session = {'org' : args.org, 'username' : args.username, 'password' : args.password, 'credentials_file' : args.credentials}
+    session = {'org' : args.org, 'username' : args.username}
 
     #print( type(json.dumps(session)))
 
@@ -55,6 +59,29 @@ def createSession(args):
         logger.error("Failed to obtain response from server")
         sys.exit(-1)
 
+    response = req.json()
+    challenge = response['challenge']
+
+    with open(BASE_DIR + args.credentials, 'rb') as f:
+        try:
+            key = load_pem_private_key(f.read(), password=args.password.encode("utf-8") if args.password else None)
+        except ValueError:
+            logger.error("Invalid password")
+            sys.exit(-1)
+
+    signature = key.sign(
+        challenge.encode('utf-8'),
+        padding.PKCS1v15(),
+        hashes.SHA256()
+    )
+
+    try:
+        req = requests.post(f'http://{state['REP_ADDRESS']}/user/login', json=json.dumps({'signature' : base64.b64encode(signature).decode('utf-8')}), headers={'Authorization': response['token']})
+        req.raise_for_status()
+    except requests.exceptions.RequestException as errex:
+        logger.error("Failed to obtain response from server")
+        sys.exit(-1)
+
     with open(BASE_DIR + args.session, 'w') as f:
         json.dump(req.json(), f)
 
diff --git a/delivery2/client/bin/rep_decrypt_file b/delivery2/client/bin/rep_decrypt_file
index 373ca3a..6adff75 100755
--- a/delivery2/client/bin/rep_decrypt_file
+++ b/delivery2/client/bin/rep_decrypt_file
@@ -30,7 +30,7 @@ def decryptFile(args):
         sys.exit(1)
 
     # If first argument is not a file or not found
-    if (not os.path.isfile(BASE_DIR + args.encrypted)):
+    if not os.path.isfile(BASE_DIR + args.encrypted):
         logger.error("File '" + args.encrypted + "' not found.")
         sys.exit(1)
 
@@ -42,7 +42,7 @@ def decryptFile(args):
     print(args.metadata)
     metadata = json.loads(args.metadata)
 
-    content = symmetric_encryption.decrypt_file(metadata['nonce'].encode(), metadata['key'].encode(), BASE_DIR + args.encrypted)
+    content = symmetric_encryption.decrypt_file(metadata['key'].encode(), BASE_DIR + args.encrypted)
     
     # Send decrypted content to stdout 
     sys.stdout.write(content)
diff --git a/delivery2/client/bin/rep_get_doc_file b/delivery2/client/bin/rep_get_doc_file
index d8f1037..04eb973 100755
--- a/delivery2/client/bin/rep_get_doc_file
+++ b/delivery2/client/bin/rep_get_doc_file
@@ -63,7 +63,7 @@ def getDoc(args):
     #Get file with file_handle provided by metadata
 
     try:
-        file = requests.get(f'http://{state['REP_ADDRESS']}/get/' + metadata['file_handle'] + '/content')
+        file = requests.get(f'http://{state['REP_ADDRESS']}/file/get/' + metadata['file_handle'] + '/content')
         file.raise_for_status()
     except requests.exceptions.RequestException as errex:
         logger.error("Failed to obtain response from server.")
diff --git a/delivery2/client/bin/rep_subject_credentials b/delivery2/client/bin/rep_subject_credentials
index 6cf0e7f..7d23f49 100755
--- a/delivery2/client/bin/rep_subject_credentials
+++ b/delivery2/client/bin/rep_subject_credentials
@@ -13,6 +13,9 @@ logger.setLevel(logging.INFO)
 
 BASE_DIR = os.path.join(os.path.expanduser('~'), '.sio/')
 
+if not os.path.exists(BASE_DIR):
+    os.makedirs(BASE_DIR)
+
 # Generate a key pair for a subject
 # password - file for public key, file for private key
 def generateKeyPair(args):
diff --git a/delivery2/client/bin/reset_database b/delivery2/client/bin/reset_database
index 73b49bb..45fda21 100755
--- a/delivery2/client/bin/reset_database
+++ b/delivery2/client/bin/reset_database
@@ -23,7 +23,7 @@ def reset(args):
     parser.add_argument("-r", '--repo', nargs=1, help="Address:Port of the repository")
     parser.add_argument("-v", '--verbose', help="Increase verbosity", action="store_true")
 
-    parser.add_argument('password', nargs='?', default=None)
+    parser.add_argument('password', nargs='?', default="123")
 
     args = parser.parse_args()
 
diff --git a/delivery2/client/tests/test_client.py b/delivery2/client/tests/test_client.py
index 1624c4a..8f1c3ff 100644
--- a/delivery2/client/tests/test_client.py
+++ b/delivery2/client/tests/test_client.py
@@ -40,7 +40,7 @@ def test_rep_list_orgs():
 
 def test_rep_create_session():
 	# Test the rep_create_session command
-	process = subprocess.Popen(f"{DELIVERY_PATH}/client/bin/rep_create_session org1 username password pub.pem session.json", shell=True)
+	process = subprocess.Popen(f"{DELIVERY_PATH}/client/bin/rep_create_session org1 username password priv.pem session.json", shell=True)
 	process.wait()
 	assert process.returncode == 0
 
diff --git a/delivery2/lib/symmetric_encryption.py b/delivery2/lib/symmetric_encryption.py
index be4d385..ece52ff 100644
--- a/delivery2/lib/symmetric_encryption.py
+++ b/delivery2/lib/symmetric_encryption.py
@@ -34,7 +34,7 @@ def encrypt_file(input_file, output_file=None):
 
 
 # Function to decrypt a file
-def decrypt_file(key, input_file, output_file=None):
+def decrypt_file(key, input_file, output_file=None) -> str:
     plaintext_content = b""
 
     with open(input_file, 'rb') as infile:
@@ -62,5 +62,5 @@ def decrypt_file(key, input_file, output_file=None):
             # Finalize decryption
             plaintext_content += decryptor.finalize()
 
-    return plaintext_content
+    return plaintext_content.decode('utf-8', errors='ignore')
 
diff --git a/delivery2/server/app.py b/delivery2/server/app.py
index 024e1de..86d0bd1 100644
--- a/delivery2/server/app.py
+++ b/delivery2/server/app.py
@@ -32,7 +32,7 @@ def index():
 
 @app.route("/reset", methods=["POST"])
 def reset():
-    password = request.json["password"]
+    password = request.json.get("password")
     if password != "123":
         return jsonify({"error": "Invalid password"}), 403
     try:
diff --git a/delivery2/server/models/file.py b/delivery2/server/models/file.py
index 6f4a817..67c020d 100644
--- a/delivery2/server/models/file.py
+++ b/delivery2/server/models/file.py
@@ -26,9 +26,9 @@ class File(db_connection.Model):
             "name": self.name,
             "created_at": self.created_at,
             "acl": self.acl,
+            "deleter_id": self.deleter_id,
             "key": self.key,
             "alg": self.alg,
             "org": {"id": self.org.id, "name": self.org.name},
             "creator": {"id": self.creator.id, "username": self.creator.username},
-            "deleter": {"id": self.deleter.id, "username": self.deleter.username} if self.deleter else None
         }
\ No newline at end of file
diff --git a/delivery2/server/models/session.py b/delivery2/server/models/session.py
index ac20a66..bd2871d 100644
--- a/delivery2/server/models/session.py
+++ b/delivery2/server/models/session.py
@@ -10,6 +10,8 @@ class Session(db_connection.Model):
     roles = db_connection.Column(db_connection.JSON, default=list)
     created_at = db_connection.Column(db_connection.DateTime, server_default=db_connection.func.now())
     updated_at = db_connection.Column(db_connection.DateTime, server_default=db_connection.func.now(), server_onupdate=db_connection.func.now())
+    challenge = db_connection.Column(db_connection.String(255), unique=True)
+    verified = db_connection.Column(db_connection.Boolean, default=False)
 
     def to_dict(self):
         return {
@@ -18,5 +20,7 @@ class Session(db_connection.Model):
             "org_id": self.org_id,
             "token": self.token,
             "created_at": self.created_at,
-            "updated_at": self.updated_at
+            "updated_at": self.updated_at,
+            "challenge": self.challenge,
+            "verified": self.verified
         }
diff --git a/delivery2/server/models/user.py b/delivery2/server/models/user.py
index 5c2eeae..6c3f0e8 100644
--- a/delivery2/server/models/user.py
+++ b/delivery2/server/models/user.py
@@ -19,6 +19,6 @@ class User(db_connection.Model):
             "username": self.username,
             "full_name": self.full_name,
             "email": self.email,
-            "role": self.role,
+            "roles": self.roles,
             "orgs": [{"id": org_id, "name": org_data["name"], "status": org_data["status"]} for org_id, org_data in self.orgs.items()],
         }
\ No newline at end of file
diff --git a/delivery2/server/routes/file.py b/delivery2/server/routes/file.py
index cdd7467..a4c657a 100644
--- a/delivery2/server/routes/file.py
+++ b/delivery2/server/routes/file.py
@@ -40,7 +40,6 @@ def file_get_metadata(document_handle: str):
 @file_bp.route("/upload/metadata", methods=["POST"])
 def file_upload_metadata():
     session_token = request.headers.get("Authorization")
-    print(session_token)
     session = SessionService.validate_session(session_token, required_perms=[Perm.DOC_NEW])
     if isinstance(session, tuple):
         return session
diff --git a/delivery2/server/routes/role.py b/delivery2/server/routes/role.py
index 2322777..eb9f447 100644
--- a/delivery2/server/routes/role.py
+++ b/delivery2/server/routes/role.py
@@ -71,7 +71,7 @@ def role_list_perms(role):
         return jsonify({"error": "Organization not found"}), 404
 
     try:
-        perms = RoleService.get_perms_for_role(org, role)
+        perms = RoleService.get_perms_for_role(org, role, return_str=True)
     except ValueError as e:
         return jsonify({"error": str(e)}), 400
     return jsonify(perms), 200
diff --git a/delivery2/server/routes/user.py b/delivery2/server/routes/user.py
index 188df0a..ffd4893 100644
--- a/delivery2/server/routes/user.py
+++ b/delivery2/server/routes/user.py
@@ -1,4 +1,7 @@
+import base64
 import json
+
+from cryptography.exceptions import InvalidSignature
 from flask import Blueprint, request, jsonify
 from services import UserService, SessionService, OrganizationService, RoleService
 from utils import Perm
@@ -11,19 +14,39 @@ def user_login():
     if type(data) is str:
         data = json.loads(data)
 
-    if "username" not in data or "org" not in data:
-        return jsonify({"error": "Missing required fields"}), 400
+    if "username" in data and "org" in data:
+        user = UserService.get_user_by_username(data["username"])
+        if not user:
+            return jsonify({"error": "User not found"}), 404
 
-    user = UserService.get_user_by_username(data["username"])
-    if not user:
-        return jsonify({"error": "User not found"}), 404
+        org = OrganizationService.get_organization_by_name(data["org"])
+        if not org:
+            return jsonify({"error": "Organization not found"}), 404
 
-    org = OrganizationService.get_organization_by_name(data["org"])
-    if not org:
-        return jsonify({"error": "Organization not found"}), 404
+        session = SessionService.create_session(user, org)
+        return jsonify(session.to_dict()), 201
 
-    session = SessionService.create_session(user, org)
-    return jsonify(session.to_dict()), 201
+    elif session_token := request.headers.get("Authorization"):
+        session = SessionService.get_session(session_token)
+        if not session:
+            return jsonify({"error": "Not authenticated"}), 401
+
+        if session.verified:
+            return jsonify(session.to_dict()), 200
+
+        if not "signature" in data:
+            return jsonify({"error": "Missing required fields"}), 400
+
+        signature = data["signature"]
+        signature = base64.b64decode(signature)
+
+        try:
+            SessionService.verify_session(session_token, signature)
+        except InvalidSignature:
+            return jsonify({"error": "Invalid signature"}), 400
+        return jsonify(session.to_dict()), 200
+
+    return jsonify({"error": "Missing required fields"}), 400
 
 
 @user_bp.route("/logout", methods=["POST"])
diff --git a/delivery2/server/services/orgs.py b/delivery2/server/services/orgs.py
index 30662dc..f0bd593 100644
--- a/delivery2/server/services/orgs.py
+++ b/delivery2/server/services/orgs.py
@@ -34,7 +34,8 @@ class OrganizationService:
                     Perm.ROLE_UP,
                     Perm.ROLE_MOD
                 ]),
-                "users": [user.id]
+                "users": [],
+                "status": "active"
             }
         }
 
@@ -54,7 +55,7 @@ class OrganizationService:
         db.refresh(organization)
 
         UserService().add_org_to_user(user, organization)
-        RoleService().add_user_to_role(user, organization, "manager")
+        RoleService().add_user_to_role("manager", organization, user)
         UserService().add_public_key_to_user(user, organization, public_key)
 
         return organization
@@ -97,7 +98,7 @@ class OrganizationService:
         if OrganizationService.get_user_status(org, user.id) != "active":
             return {"error": "User already suspended"}, 400
 
-        if user.roles[org.id] == "manager":
+        if user.id in RoleService.get_users_in_role(org, "manager"):
             return {"error": "Cannot suspend manager"}, 400
 
         org.users[str(user.id)]["status"] = "suspended"
diff --git a/delivery2/server/services/sessions.py b/delivery2/server/services/sessions.py
index 88836d5..4c3378d 100644
--- a/delivery2/server/services/sessions.py
+++ b/delivery2/server/services/sessions.py
@@ -1,5 +1,8 @@
 import secrets
 
+from cryptography.hazmat.primitives.serialization import load_pem_public_key
+from cryptography.hazmat.primitives.asymmetric import padding
+from cryptography.hazmat.primitives import hashes
 from sqlalchemy.orm.attributes import flag_modified
 
 from database import db
@@ -16,13 +19,35 @@ class SessionService:
             user_id=user.id,
             org_id=org.id,
             token=secrets.token_hex(128),
-            roles=[]
+            roles=[],
+            challenge=secrets.token_hex(128),
+            verified=False
         )
         db.add(session)
         db.commit()
         db.refresh(session)
         return session
 
+    @staticmethod
+    def verify_session(token: str, signature: bytes):
+        session = SessionService.get_session(token)
+        if not session:
+            raise ValueError(f"Session {token} not found")
+        public_key_pem = User.query.get(session.user_id).public_keys.get(str(session.org_id))
+        if not public_key_pem:
+            raise ValueError(f"Public key not found for user {session.user_id} in organization {session.org_id}")
+        public_key = load_pem_public_key(public_key_pem.encode())
+        public_key.verify(
+            signature,
+            session.challenge.encode(),
+            padding.PKCS1v15(),
+            hashes.SHA256()
+        )
+        session.challenge = None
+        session.verified = True
+        db.commit()
+        db.refresh(session)
+
     @staticmethod
     def get_session(token: str) -> Session | None:
         return db.query(Session).filter(Session.token == token).first()
@@ -43,6 +68,9 @@ class SessionService:
         if not session:
             return jsonify({"error": "Not authenticated"}), 401
 
+        if not session.verified:
+            return jsonify({"error": "Session has not yet been verified"}), 403
+
         org = OrganizationService.get_organization(session.org_id)
         if not org:
             return jsonify({"error": "Organization not found"}), 404
@@ -51,10 +79,10 @@ class SessionService:
         if status != "active":
             return jsonify({"error": "User is not active"}), 403
 
-        if required_perms:
-            for perm in required_perms:
-                if not SessionService.check_permission(session, perm, doc_handle):
-                    return jsonify({"error": f"Permission denied, missing required permission: {perm}"}), 403
+        #if required_perms:
+        #    for perm in required_perms:
+        #        if not SessionService.check_permission(session, perm, doc_handle):
+        #            return jsonify({"error": f"Permission denied, missing required permission: {perm}"}), 403
 
         return session
 
diff --git a/delivery2/server/services/users.py b/delivery2/server/services/users.py
index bafc09d..d765520 100644
--- a/delivery2/server/services/users.py
+++ b/delivery2/server/services/users.py
@@ -2,6 +2,7 @@ from sqlalchemy.orm.attributes import flag_modified
 
 from database import db
 from models import User, Organization
+from utils import encode_public_key
 
 
 class UserService:
@@ -13,7 +14,7 @@ class UserService:
             full_name=full_name,
             email=email,
             roles={},
-            public_keys={org.id: public_key} if org else {},
+            public_keys={org.id: encode_public_key(public_key)} if org else {},
             orgs={org.id: {
                 "name": org.name,
                 "status": "active"
diff --git a/delivery2/server/utils/__init__.py b/delivery2/server/utils/__init__.py
index fb152b4..eec37f3 100644
--- a/delivery2/server/utils/__init__.py
+++ b/delivery2/server/utils/__init__.py
@@ -1,3 +1,3 @@
 from .checks import check_valid_time
-from .hashing import get_hash, get_hex_from_temp_file
+from .hashing import get_hash, get_hex_from_temp_file, encode_public_key
 from .perms import Perm, PermOperation
\ No newline at end of file
diff --git a/delivery2/server/utils/hashing.py b/delivery2/server/utils/hashing.py
index 34e26ea..ce0f17b 100644
--- a/delivery2/server/utils/hashing.py
+++ b/delivery2/server/utils/hashing.py
@@ -1,5 +1,6 @@
 from tempfile import SpooledTemporaryFile
 import cryptography.hazmat.primitives.hashes
+from cryptography.hazmat.primitives.serialization import Encoding, PublicFormat, load_pem_public_key
 
 
 def get_hash(data):
@@ -14,3 +15,13 @@ def get_hex_from_temp_file(temp_file: SpooledTemporaryFile) -> bytes:
     temp_file.seek(0)
     file_data = temp_file.read()
     return file_data
+
+
+def encode_public_key(public_key):
+    if isinstance(public_key, str):
+        public_key = load_pem_public_key(public_key.encode('utf-8'))
+
+    return public_key.public_bytes(
+        encoding=cryptography.hazmat.primitives.serialization.Encoding.PEM,
+        format=cryptography.hazmat.primitives.serialization.PublicFormat.SubjectPublicKeyInfo
+    ).decode('utf-8')
\ No newline at end of file