def load_key()

in src/dynamodb_encryption_sdk/internal/crypto/jce_bridge/authentication.py [0:0]

• 6 lines of code
• 4 McCabe index (conditional complexity)

    def load_key(self, key, key_type, key_encoding):
        # (bytes, EncryptionKeyType, KeyEncodingType) -> bytes
        """Load a raw key from bytes.

        :param bytes key: Raw key bytes to load
        :param EncryptionKeyType key_type: Type of key to load
        :param KeyEncodingType key_encoding: Encoding used to serialize ``key``
        :returns: Loaded key
        :rtype: bytes
        :raises ValueError: if ``key_type`` is not symmetric or ``key_encoding`` is not raw
        """
        if not (key_type is EncryptionKeyType.SYMMETRIC and key_encoding is KeyEncodingType.RAW):
            raise ValueError("Key type must be symmetric and encoding must be raw.")

        if len(key) * 8 < MinimumKeySizes.HMAC.value:
            _LOGGER.warning("HMAC keys smaller than %d bits are unsafe", MinimumKeySizes.HMAC.value)

        return key