Added frontend. Working on user management

src/file-processor/app/utils/security.py

@@ -0,0 +1,74 @@
+"""
+Password security utilities using bcrypt for secure password hashing.
+
+This module provides secure password hashing and verification functions
+using the bcrypt algorithm with automatic salt generation.
+"""
+
+import bcrypt
+from typing import Union
+
+
+def hash_password(password: str) -> str:
+  """
+  Hash a password using bcrypt with automatic salt generation.
+
+  Args:
+      password: The plain text password to hash
+
+  Returns:
+      The hashed password as a string
+
+  Raises:
+      ValueError: If password is empty or None
+      RuntimeError: If bcrypt hashing fails
+  """
+  if not password:
+    raise ValueError("Password cannot be empty or None")
+  
+  try:
+    # Encode password to bytes and generate salt
+    password_bytes = password.encode('utf-8')
+    salt = bcrypt.gensalt()
+    
+    # Hash the password
+    hashed = bcrypt.hashpw(password_bytes, salt)
+    
+    # Return as string
+    return hashed.decode('utf-8')
+  
+  except Exception as e:
+    raise RuntimeError(f"Failed to hash password: {str(e)}")
+
+
+def verify_password(password: str, hashed_password: str) -> bool:
+  """
+  Verify a password against its hash.
+
+  Args:
+      password: The plain text password to verify
+      hashed_password: The hashed password to verify against
+
+  Returns:
+      True if password matches the hash, False otherwise
+
+  Raises:
+      ValueError: If password or hashed_password is empty or None
+      RuntimeError: If password verification fails due to malformed hash
+  """
+  if not password or not hashed_password:
+    raise ValueError("Password and hashed_password cannot be empty or None")
+  
+  try:
+    # Encode inputs to bytes
+    password_bytes = password.encode('utf-8')
+    hashed_bytes = hashed_password.encode('utf-8')
+    
+    # Verify password
+    return bcrypt.checkpw(password_bytes, hashed_bytes)
+  
+  except ValueError as e:
+    # bcrypt raises ValueError for malformed hashes
+    raise RuntimeError(f"Invalid hash format: {str(e)}")
+  except Exception as e:
+    raise RuntimeError(f"Failed to verify password: {str(e)}")