Method and system for accessing device by a user

A system for accessing a device by a user, the system comprising:

• at least two distributed authentication servers and at least two distributed ticket granting servers in different networks, the distributed authentication servers being operable to collaboratively generate a combined authentication ticket and to collaboratively generate a combined user session key, wherein each distributed authentication server generates a part of the combined authentication ticket and a part of the combined user session key, the authentication ticket and the user session key comprising multiple parts,
• wherein the distributed ticket granting servers are operable to authenticate the user with the authentication ticket by collaboratively decrypting user request information using the combined user session key and comparing content of the decrypted user request information with the authentication ticket and to collaboratively generate an encrypted user-to-device ticket and an encrypted user-to-device session key,
• wherein the device is accessible by the user using the encrypted user-to-device ticket and the encrypted user-to-device session key.