landvex: Fixar och tester klara för alla komponenter

- Datafabrik: Dockerfile fix, agentorkestrering fungerar
- Vision: Identify-modell, FAISS, OCR alla testade
- API: Alla 7 integrationstester passerade
- Upplösare: Entitetsupplösning verifierad

landvex-admin/backend/app/core/security.py

@@ -0,0 +1,103 @@
+"""Security utilities for authentication and authorization."""
+from datetime import datetime, timedelta
+from typing import Any
+from uuid import UUID
+
+import jwt
+from passlib.context import CryptContext
+
+from app.config import settings
+
+# Password hashing with Argon2id
+pwd_context = CryptContext(schemes=["argon2"], deprecated="auto")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """Verify a plain password against a hash."""
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """Hash a password using Argon2id."""
+    return pwd_context.hash(password)
+
+
+def create_access_token(
+    subject: UUID | str,
+    tenant_id: UUID | None = None,
+    scopes: list[str] | None = None,
+    expires_delta: timedelta | None = None,
+) -> str:
+    """Create JWT access token."""
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+
+    to_encode: dict[str, Any] = {
+        "sub": str(subject),
+        "exp": expire,
+        "iat": datetime.utcnow(),
+        "type": "access",
+    }
+
+    if tenant_id:
+        to_encode["tenant_id"] = str(tenant_id)
+    if scopes:
+        to_encode["scopes"] = scopes
+
+    encoded_jwt = jwt.encode(
+        to_encode, settings.SECRET_KEY, algorithm=settings.JWT_ALGORITHM
+    )
+    return encoded_jwt
+
+
+def create_refresh_token(subject: UUID | str) -> str:
+    """Create JWT refresh token."""
+    expire = datetime.utcnow() + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
+
+    to_encode: dict[str, Any] = {
+        "sub": str(subject),
+        "exp": expire,
+        "iat": datetime.utcnow(),
+        "type": "refresh",
+    }
+
+    encoded_jwt = jwt.encode(
+        to_encode, settings.SECRET_KEY, algorithm=settings.JWT_ALGORITHM
+    )
+    return encoded_jwt
+
+
+def decode_token(token: str) -> dict[str, Any]:
+    """Decode and validate JWT token."""
+    return jwt.decode(
+        token, settings.SECRET_KEY, algorithms=[settings.JWT_ALGORITHM]
+    )
+
+
+def generate_api_key() -> tuple[str, str]:
+    """Generate a new API key and its hash.
+
+    Returns:
+        Tuple of (full_key, key_hash)
+    """
+    import secrets
+    import hashlib
+
+    # Generate random key: lv_<32 random chars>
+    random_part = secrets.token_urlsafe(32)
+    full_key = f"lv_{random_part}"
+
+    # Hash for storage
+    key_hash = hashlib.sha256(full_key.encode()).hexdigest()
+
+    return full_key, key_hash
+
+
+def verify_api_key(plain_key: str, key_hash: str) -> bool:
+    """Verify an API key against its hash."""
+    import hashlib
+
+    computed_hash = hashlib.sha256(plain_key.encode()).hexdigest()
+    return computed_hash == key_hash