Patent ID: 8079071

Claim:
A method for accessing content stored on a memory device, the method comprising: performing in a memory device storing content encrypted with a cryptographic key: receiving a session ticket and a request to access the content from a host computing device, wherein the session ticket was previously provided to the host computing device and was generated by the memory device by encrypting a parameter associated with the cryptographic key with a variable that has a value associated with a session and that changes value at different sessions; attempting to extract the parameter associated with the cryptographic key from the session ticket by decrypting the session ticket with the variable, wherein if the session has not changed, the value of the variable has not changed, and the parameter associated with the cryptographic key is extracted from the session ticket; and if the parameter associated with the cryptographic key is extracted from the session ticket: obtaining the cryptographic key based on the parameter, decrypting the content using the cryptographic key, and sending the content to the host computing device.