Abstract: A device for accessing metadata information of a file system is provided. The device includes an interface and a processor. The interface is configured to load encrypted edge metadata from a storage. The processor is configured to decrypt the encrypted edge metadata in order to obtain decrypted edge metadata, having information on a storage location of encrypted node metadata and a node decryption key. The interface is configured to load the encrypted node metadata from the storage using the information on the storage location of the encrypted node metadata. The processor is configured to decrypt the encrypted node metadata using the node decryption key in order to obtain decrypted node metadata.

Abstract: A hardware crypto module encrypts or decrypts data from a device, the device being arranged to be remote and separate from the crypto module in terms of hardware. The crypto module includes an interface for communicating with the remotely arranged device, a memory, and a crypto processor. The crypto processor is configured to encrypt or decrypt, while using a first key, data received via the interface, to encrypt the first key while using a second key stored in the memory, and to output the first key via the interface exclusively in an encrypted form.