MULTI-LEVEL INDEPENDENT SECURITY ARCHITECTURE

• US 20190050348A1
• Filed: 10/23/2018
• Published: 02/14/2019
• Est. Priority Date: 04/01/2013
• Status: Active Grant

• Current Assignee: Secturion Systems, Inc.
• Original Assignee: Secturion Systems, Inc.
• Inventors: TAKAHASHI, RICHARD J.
• Granted Patent: US 11,429,540 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 12/0802 Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
• CPC Class Codes: G06F 12/1408 by using cryptography for digital transmission H04L9/00
• CPC Class Codes: G06F 12/1466 Key-lock mechanism
• CPC Class Codes: G06F 21/575 Secure boot
• CPC Class Codes: G06F 21/72 in cryptographic circuits
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: G06F 2212/1052 Security improvement
• CPC Class Codes: G06F 2212/402 Encrypted data
• CPC Class Codes: G06F 2212/60 Details of cache memory
• 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 63/0485 Networking architectures for enhanced packet encryption processing, e.g. offloading of IPsec packet processing or efficient security association look-up
• CPC Class Codes: H04L 63/105 Multiple levels of security
• CPC Class Codes: H04L 9/14 using a plurality of keys or algorithms

Abstract

A system includes a plurality of data input ports, each port corresponding to one of a plurality of different levels of security classification; a security device, configured for cryptographic processing, coupled to receive incoming data from each of the plurality of input ports, wherein the incoming data includes first data having a first classification level; a key manager configured to select and tag-identified first set of keys from a plurality of key sets, each of the key sets corresponding to one of the different levels of security classification, wherein the first set of keys is used by the security device to encrypt the first data; and a common encrypted data storage, coupled to receive the encrypted first data from the security device for storage.

Claims

1. A system, comprising:

a plurality of data input ports, each port corresponding to one of a plurality of different levels of security classification;

a security device, configured for cryptographic processing, coupled to receive incoming data from each of the plurality of input ports, wherein the incoming data includes first data having a first classification level;

a key manager configured to select a first set of keys from a plurality of key sets, each of the key sets corresponding to one of the different levels of security classification, wherein the first set of keys is used by the security device to encrypt the first data; and

a common encrypted data storage, coupled to receive the encrypted first data from the security device for storage.

2. The system of claim 1, wherein the security device comprises a cryptographic module, and the key manager is an internal key manager of the cryptographic module.

3. The system of claim 1, further comprising a plurality of key caches, wherein the key manager is coupled to an external key manager, and keys received from the external key manager are tagged-identified and stored in one of the associated key caches for use by the security device during encryption of incoming data packets.

4. The system of claim 1, wherein the security device comprises a plurality of cryptographic modules, each cryptographic module dedicated to perform security processing for only one of the different levels of security classification.

5. The system of claim 4, further comprising a plurality of key caches, wherein keys are stored in each of the key caches for use by a selected one of the cryptographic modules during encryption of the incoming data.

6. The system of claim 4, wherein the first data is a first data packet comprising a tag that identifies one of the levels of security classification, and the system further comprising an interface between the input ports and the cryptographic modules, the interface to route the first data packet to one of the cryptographic modules based on the tag.

7. The system of claim 6, wherein the interface between the input ports and the cryptographic modules is a programmable input/output interface.

8. The system of claim 7, wherein the programmable input/output interface is programmable to support different interface protocols, and each of the plurality of cryptographic modules is programmable to support different encryption protocols.

9. The system of claim 8, wherein the programmable input/output interface includes at least one field-programmable gate array programmable to support the different interface protocols.

10. The system of claim 4, wherein each of the cryptographic modules is physically isolated from the other of the cryptographic modules.

11. The system of claim 4, wherein each of the cryptographic modules comprises a packet input engine and a cryptographic engine, each configured for data processing as part of a two-dimensional systolic array.

12. A method, comprising:

receiving incoming data from a plurality of data ports, each port corresponding to one of a plurality of different levels of security classification, wherein the incoming data includes first data having a first classification level;

encrypting the first data using a first set of keys, the first set of keys selected from a plurality of key sets, each of the key sets corresponding to one of the different levels of security classification; and

writing the encrypted first data into a common encrypted data storage.

13. The method of claim 12, wherein the first data is encrypted using a cryptographic module, the method further comprising zeroizing the cryptographic module after the encrypting of the first data.

14. The method of claim 12, wherein the first data is a first data packet, the method further comprising adding a benign tag to a header of the first data packet to indicate a classification level at which the first data packet is being stored.

15. The method of claim 14, further comprising:

reading the first data packet from the common encrypted data storage;

verifying the classification level of the first data packet using the benign tag; and

addressing a key store controller to select a key associated with the first data packet to use in decrypting the first data packet;

loading the selected key into a cryptographic core; and

decrypting the first data packet using the cryptographic core.

16. The method of claim 15, further comprising:

selecting, by the key store controller, one of the data ports; and

routing the decrypted first data packet to the data port selected by the key store controller.

17. The method of claim 15, further comprising:

routing the first data packet from the common encrypted data storage using a fail safe multiplexer;

sending the first data packet to the cryptographic core for decryption; and

zeroizing the fail safe multiplexer and the cryptographic core after each classified level of data is processed.

18. The method of claim 14, further comprising:

reading the first data packet from a common un-encrypted data network;

verifying the first classification level of the first data packet using the benign tag;

addressing a key store controller to select a key associated with the first data packet to use in encrypting the first data packet;

loading the selected key into a cryptographic core; and

encrypting the first data packet using the cryptographic core.

19. The method of claim 18, further comprising:

routing the first data packet from the common un-encrypted data network using a fail safe multiplexer;

sending the first data packet to the cryptographic core for encryption; and

zeroizing the fail safe multiplexer and the cryptographic core after each classified level of data is processed.

20. A security device, comprising:

a plurality of data ports, each port corresponding to one of a plurality of different levels of security classification;

a plurality of cryptographic modules, each cryptographic module dedicated to perform encryption and decryption for one of the different levels of security classification, each cryptographic module coupled to receive incoming data from one of the plurality of data ports, and the incoming data including first data having a first classification level;

at least one key cache storing a plurality of key sets, each of the key sets corresponding to one of the different levels of security classification, wherein a first set of keys is selected from the plurality of key sets to encrypt the first data by a first cryptographic module of the cryptographic modules; and

a packet write engine, included in the first cryptographic module, configured to send the encrypted first data to a common data storage.