METHOD AND SYSTEM FOR SECURE DATA COLLECTION AND DISTRIBUTION

• US 20110126012A1
• Filed: 11/30/2010
• Published: 05/26/2011
• Est. Priority Date: 09/13/2006
• Status: Active Grant

• Current Assignee: Nice Ltd
• Original Assignee: Nice Systems Limited (Nice Ltd)
• Inventors: Portman, Leon, Hoffman, Dvir, Fisher, Oren, BEN-AMI, Hadas
• Granted Patent: US 8,526,620 B2
• Time in Patent Office: Days
• US Class Current: 713/168
• CPC Class Codes: H04L 2209/56 Financial cryptography, e.g. electronic payment or e-cash
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/062 for key distribution, e.g. centrally by trusted party cryptographic mechanisms or cryptographic arrangements for key distribution involving a central third party H04L9/0819
• CPC Class Codes: H04L 63/123 received data contents, e.g. message integrity
• CPC Class Codes: H04L 9/0822 using key encryption key
• CPC Class Codes: H04L 9/0894 Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
• CPC Class Codes: H04L 9/3242 involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC

Abstract

A data provider generates a data encryption key and an identifier, uses the data encryption key to encrypt data, sends the encrypted data and the identifier to a data requestor, and sends the data encryption key and the identifier to a crypto information server. The data requestor sends the identifier to the crypto information server to request the encryption key. The crypto information server authenticates the data requestor and, contingent on that authentication, sends the data encryption key to the data requestor. If a plurality of data instances are captured, then for each instance, a respective data encryption key and identifier are generated.

Claims

1. A method for secure recording of screen data, the method comprising the steps of:

generating a data encryption key according to a predefined granularity for each initialization of a screen agent on a terminal;

using the encryption key to encrypt the screen data to produce encrypted screen data;

associating an identifier with the encryption key and the encrypted screen data;

sending the identifier and the encrypted screen data to an archive; and

sending the identifier and the data encryption key to a crypto information server.

2. The method of claim 1, comprising:

receiving from the archive the encrypted screen data and the identifier;

sending the identifier to the crypto information server;

receiving from the crypto information server the data encryption key; and

decrypting and displaying the screen data.

3. The method of claim 1, comprising, at the crypto information server, authenticating a terminal sending the identifier to the crypto information server.

4. The method of claim 1, comprising receiving the data encryption key in encrypted form.

5. The method of claim 1, comprising:

generating a message authentication code (MAC) key;

using the MAC key to produce a MAC related to the screen data;

attaching the MAC to the screen data prior to encrypting the screen data; and

sending the MAC key to the crypto information server.

6. A method for secure recording of audio data, the method comprising the steps of:

generating a data encryption key according to a predefined granularity, the granularity being for each audio channel of a logger;

using the encryption key to encrypt the audio data to produce encrypted audio data;

associating an identifier with the encryption key and the encrypted audio data;

sending the identifier and the encrypted audio data to an archive; and

sending the identifier and the data encryption key to a crypto information server.

7. The method of claim 6, comprising:

receiving from the archive the encrypted audio data and the identifier;

sending the identifier to the crypto information server;

receiving from the crypto information server the data encryption key; and

decrypting and audibly presenting the audio data.

8. The method of claim 6, comprising, at the crypto information server, authenticating a terminal sending the identifier to the crypto information server.

9. The method of claim 6, comprising receiving the data encryption key in encrypted form.

10. The method of claim 6, comprising:

generating a message authentication code (MAC) key;

using the MAC key to produce a MAC related to the audio data;

attaching the MAC to the audio data prior to encrypting the audio data; and

sending the MAC key to the crypto information server.

11. A system for secure recording of screen data, the system comprising:

an archive;

a crypto information server;

a data terminal; and

a logger to;

generate a data encryption key according to a predefined granularity for each initialization of a screen agent on a terminal;

use the encryption key to encrypt the screen data to produce encrypted screen data;

associate an identifier with the encryption key and the encrypted screen data;

send the identifier and the encrypted screen data to the archive; and

send the identifier and the data encryption key to the crypto information server.

12. The system of claim 11, wherein the data terminal is to:

receive from the archive the encrypted screen data and the identifier;

send the identifier to the crypto information server;

receive from the crypto information server the data encryption key; and

decrypt and display the screen data.

13. The system of claim 11, wherein the crypto information server is to authenticate the terminal after the terminal sends the data encryption key to the crypto information server.

14. The system of claim 11, wherein the terminal is to receive the data encryption key in encrypted form.

15. The system of claim 11, wherein the logger is to:

generate a message authentication code key;

generate a message authentication code, using the respective message authentication code key; and

attach the message authentication code to the screen data prior to encrypting the screen data;

and wherein the system comprises;

a crypto information server, operative;

to authenticate the terminal; and

contingent on the authentication, to send the respective data encryption key and the respective message authentication code key to the terminal.

16. A system for secure recording audio data, the system comprising:

an archive;

a crypto information server;

a data terminal; and

a logger to;

generate a data encryption key according to a predefined granularity, the granularity being for each audio channel of the logger;

use the encryption key to encrypt the audio data to produce encrypted audio data;

associate an identifier with the encryption key and the encrypted audio data;

send the identifier and the encrypted audio data to the archive; and

send the identifier and the data encryption key to the crypto information server.

17. The system of claim 16, wherein the data terminal is to:

receive from the archive the encrypted audio data and the identifier;

send the identifier to the crypto information server;

receive from the crypto information server the data encryption key; and

decrypt and audibly present the audio data.

18. The system of claim 16, wherein the crypto information server is to authenticate the terminal after the terminal sends the identifier to the crypto information server.

19. The system of claim 16, wherein the terminal is to receive the data encryption key in encrypted form.