Data security

• US 9,135,470 B2
• Filed: 05/03/2010
• Issued: 09/15/2015
• Est. Priority Date: 10/20/2004
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Zimmer, Vincent J., Rothman, Michael A.
• Primary Examiner(s): RAHIM, MONJUR
• Application Number:
  US12/772,365
• Publication Number:
  US 20100275016A1
• Time in Patent Office: 1,961 Days
• Field of Search: 713/158
• US Class Current: 1/1
• CPC Class Codes: G06F 13/4068 Electrical coupling
• CPC Class Codes: G06F 21/575 Secure boot
• CPC Class Codes: G06F 21/71 to assure secure computing or processing of information
• CPC Class Codes: G06F 21/72 in cryptographic circuits
• CPC Class Codes: G06F 21/80 in storage media based on magnetic or optical technology, e.g. disks with sectors preventing unauthorised reproduction or copying of disc-type recordable media G11B20/00
• CPC Class Codes: G06F 2221/2107 File encryption
• CPC Class Codes: G06F 2221/2115 Third party
• CPC Class Codes: H04L 63/0435 wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption cryptographic mechanisms or cryptographic arrangements for symmetric key encryption H04L9/06
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 9/3268 using certificate validation, registration, distribution or revocation, e.g. certificate revocation list [CRL]

Abstract

In one embodiment, a method is provided that may include one or more operations. One of these operations may include, in response, at least in part, to a request to store input data in storage, encrypting, based least in part upon one or more keys, the input data to generate output data to store in the storage. The one or more keys may be authorized by a remote authority. Alternatively or additionally, another of these operations may include, in response, at least in part, to a request to retrieve the input data from the storage, decrypting, based at least in part upon the at least one key, the output data. Many modifications, variations, and alternatives are possible without departing from this embodiment.

Claims

1. A method comprising:

requesting, at a system, at least one encryption key from a remote authority located in a remote server over a communication network, the at least one encryption key being generated and authorized by the remote authority, the system being geographically remote from and communicatively coupled to the remote authority in the remote server;

performing, at the system, a cryptographic operation on data using the at least one encryption key, the cryptographic operation being performed in response, at least in part, to a request to store the data in storage of the system or to retrieve data from the storage;

periodically requesting, at the system, that the remote authority indicate whether the at least one encryption key has been revoked;

subsequent to receiving, from the remote authority, an indication of revoking the at least one encryption key, not performing, at the system, the cryptographic operation on data using the at least one encryption key;

prior to performing the cryptographic operation, determining whether the system is able to communicate with the remote authority;

if the system is able to communicate with the remote authority, requesting by the system, authorization by the remote authority of the at least one encryption key; and

if the system is unable to communicate with the remote authority, determining by the system whether to permit the cryptographic operation.

2. The method of claim 1, further comprising:

receiving, via the communication network, the at least one encryption key issued from the remote authority, by logic capable of performing the cryptographic operations.

3. The method of claim 1, further comprising:

after the at least one encryption key has been authorized by the remote authority, authorizing by the remote authority at least one other encryption key; and

performing cryptographic operations on other data based, at least in part, upon the at least one other encryption key.

4. The method of claim 1, wherein:

the revoking being in response, at least in part, to failure of a user to supply one or more valid authorization credentials.

5. The method of claim 1, further comprising:

authorizing by the remote authority, based at least in part upon one or more credentials provided by a user, the at least one encryption key.

6. An apparatus comprising:

a first circuitry to request at least one encryption key from a remote authority located in a remote server over a communication network, the at least one encryption key being generated and authorized by the remote authority, the first circuitry being geographically remote from and communicatively coupled to the remote authority in the remote server;

a second circuitry to perform a cryptographic operation on data using the at least one encryption key, the cryptographic operation being performed in response, at least in part, to a request to store the data in local storage or to retrieve data from the local storage;

a third circuitry to periodically request that the remote authority indicate whether the at least one encryption key has been revoked; and

subsequent to receiving, from the remote authority, an indication of revoking the at least one encryption key, not performing by the second circuitry, at the system, the cryptographic operation on data using the at least one encryption key;

prior to performing the cryptographic operation, determining whether the system is able to communicate with the remote authority;

if the system is able to communicate with the remote authority, requesting by the system, authorization by the remote authority of the at least one encryption key; and

if the system is unable to communicate with the remote authority, determining by the system whether to permit the cryptographic operation.

7. The apparatus of claim 6, wherein the second circuitry to receive, via the communication network, the at least one encryption key issued from the remote authority.

8. The apparatus of claim 6, wherein the second circuitry to perform cryptographic operations on other data based, at least in part, upon at least one other encryption key authorized by the remote authority.

9. The apparatus of claim 6, wherein the revoking being in response, at least in part, to failure of a user to supply one or more valid authorization credentials.

10. The apparatus of claim 6, wherein the authorizing by the remote authority, based at least in part upon one or more credentials provided by a user, the at least one encryption key.

11. The apparatus of claim 6, further comprising logic, the logic to determine whether the logic can communicate with the remote authority prior to performing the cryptographic operation, if the logic can communicate with the remote authority, the first circuitry to request authorization by the remote authority of the at least one encryption key and if the logic cannot communicate with the remote authority, determining by the second circuitry whether to permit the cryptographic operation.

12. A system comprising:

a disk storage device;

a first circuitry to request at least one encryption key from a remote authority located in a remote server over a communication network, the at least one key being generated and authorized by the remote authority, the first circuitry being geographically remote from and communicatively coupled to the remote authority in the remote server;

a second circuitry to perform a cryptographic operation on data using the at least one encryption key, the cryptographic operation being performed in response, at least in part, to a request to store the data in the disk storage device or to retrieve data from the disk storage device;

a third circuitry to periodically request that the remote authority indicate whether the at least one encryption key has been revoked; and

subsequent to receiving, from the remote authority, an indication of revoking the at least one encryption key, not performing by the second circuitry, at the system, the cryptographic operation on data using the at least one encryption key;

prior to performing the cryptographic operation, determining whether the system is able to communicate with the remote authority;

if the system is able to communicate with the remote authority, requesting by the system, authorization by the remote authority of the at least one encryption key; and

if the system is unable to communicate with the remote authority, determining by the system whether to permit the cryptographic operation.

13. The system of claim 12, wherein the second circuitry to receive, via the communication network, the at least one encryption key issued from the remote authority.

14. The system of claim 12, wherein the second circuitry to perform cryptographic operations on other data based, at least in part, upon at least one other encryption key authorized by the remote authority.

15. The system of claim 12, wherein the revoking being in response, at least in part, to failure of a user to supply one or more valid authorization credentials.

16. The system of claim 12, wherein the authorizing by the remote authority, based at least in part upon one or more credentials provided by a user, the at least one encryption key.

17. The system of claim 12, further comprising logic, the logic to determine whether the logic can communicate with the remote authority prior to performing the cryptographic operation, if the logic can communicate with the remote authority, the first circuitry to request authorization by the remote authority of the at least one encryption key and if the logic cannot communicate with the remote authority, determining by the second circuitry whether to permit the cryptographic operation.