Authentication added

.gitignore

@@ -1 +1,2 @@
-*.DS_Store
+*.DS_Store
+.streamlit/secrets.toml

app.py

@@ -1,9 +1,57 @@
 import streamlit as st
 import random
 import time
+import hmac
+import bcrypt
 
 st.header(" Scientific Claim Verification ")
 
+def check_password():
+    """Returns `True` if the user had a correct password."""
+
+    def login_form():
+        """Form with widgets to collect user information"""
+        with st.form("Credentials"):
+            st.text_input("Username", key="username")
+            st.text_input("Password", type="password", key="password")
+            st.form_submit_button("Log in", on_click=password_entered)
+
+    def password_entered():
+        """Checks whether a password entered by the user is correct."""
+        
+        if st.session_state["username"] in st.secrets["passwords"]:
+            stored_hashed_password = st.secrets["passwords"][st.session_state["username"]]  # Retrieved as a string
+
+            # Convert hashed password back to bytes if it's stored as a string
+            if isinstance(stored_hashed_password, str):
+                stored_hashed_password = stored_hashed_password.encode()
+
+            # Compare user-entered password (encoded) with stored hash
+            if bcrypt.checkpw(st.session_state["password"].encode(), stored_hashed_password):
+                st.session_state["password_correct"] = True
+                del st.session_state["password"]  # Remove credentials from session
+                del st.session_state["username"]
+                return
+
+          # If authentication fails
+        st.session_state["password_correct"] = False
+
+    # Return True if the username + password is validated.
+    if st.session_state.get("password_correct", False):
+        return True
+
+    # Show inputs for username + password.
+    login_form()
+    if "password_correct" in st.session_state:
+        st.error("😕 User not known or password incorrect")
+    return False
+
+
+if not check_password():
+    st.stop()
+
+#Start of the Agentic Demo
+
 st.caption("Team UMBC-SBU-UT")
 
 # Initialize chat history
@@ -53,10 +101,10 @@ if prompt := st.chat_input("Type here"):
     with st.chat_message("user"):
         st.markdown(prompt)
 
-    #Calling retriever
+
     retrieved_documents=retriever(prompt)
 
-    #Calling reasoner
+   
     reasoning = reasoner(retrieved_documents)
 
     # Display assistant response in chat message container

hash.py

@@ -0,0 +1,9 @@
+import bcrypt
+
+def hash_password(password: str) -> str:
+    hashed = bcrypt.hashpw(password.encode(), bcrypt.gensalt())
+    return hashed.decode()
+
+new_password = ""
+hashed_password = hash_password(new_password)
+print(f"Hashed Password: {hashed_password}")