Initial InfraPulse scaffold

backend/app/auth/security.py

@@ -0,0 +1,31 @@
+from datetime import UTC, datetime, timedelta
+
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+
+from app.core.config import settings
+
+ALGORITHM = "HS256"
+pwd_context = CryptContext(schemes=["pbkdf2_sha256"], deprecated="auto")
+
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def create_access_token(subject: str) -> str:
+    expires_at = datetime.now(UTC) + timedelta(minutes=settings.access_token_expire_minutes)
+    payload = {"sub": subject, "exp": expires_at}
+    return jwt.encode(payload, settings.infrapulse_secret_key, algorithm=ALGORITHM)
+
+
+def decode_access_token(token: str) -> str | None:
+    try:
+        payload = jwt.decode(token, settings.infrapulse_secret_key, algorithms=[ALGORITHM])
+        return payload.get("sub")
+    except JWTError:
+        return None