Added func to hash master pass with known hasg

src/cryptography/master_pass.py

@@ -8,3 +8,7 @@ def encrypt_master_pass(passwd: str) -> tuple[bytes, bytes]:
     salt = bcrypt.gensalt()
     hashed = bcrypt.hashpw(passwd.encode("utf-8"), salt)
     return (hashed, salt)
+
+
+def encrypt_master_pass_known_host(passwd: str, salt: bytes) -> bytes:
+    return bcrypt.hashpw(passwd.encode("utf-8"), salt)