Method for mobile printing

• US 20030063749A1
• Filed: 10/03/2001
• Published: 04/03/2003
• Est. Priority Date: 10/03/2001
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Bunn, Jeremy, Revel, Daniel
• Granted Patent: US 8,271,776 B2
• Time in Patent Office: Days
• US Class Current: 380/270
• CPC Class Codes: G06F 21/608 Secure printing
• CPC Class Codes: H04L 63/04 for providing a confidential data exchange among entities communicating through data packet networks

Abstract

In a method for mobile printing, a mobile device generates a symmetrical pair of encryption keys and transmits the first encryption key and a print request to an imaging device. When the mobile device receives a request from the imaging device for the second encryption key, the mobile device transmits the second encryption key to the imaging device. The imaging device then uses the second encryption key to decrypt encrypted rendered content and prints the content.

Claims

1. A method of printing using a mobile device, comprising:

generating a symmetrical pair of encryption keys including a first encryption key and a second encryption key;

generating a print request;

transmitting the first encryption key, the print request, an address of an imaging device and an address of the mobile device to a print service;

receiving a request from the imaging device for the second encryption key; and

transmitting the second encryption key to the imaging device, whereby the imaging device uses the second encryption key to decrypt encrypted rendered content to create decrypted rendered content and prints the decrypted rendered content.

2. The method of claim 1, wherein the print request includes a uniform resource locator that indicates a location of content to be printed.

3. The method of claim 1, wherein the steps of transmitting the first encryption key, the print request, an address of an imaging device and an address of the mobile device to a print service and transmitting the second encryption key to the imaging device each comprise transmitting using a wireless communication protocol.

4. The method of claim 1, further comprising the step of storing the first encryption key and the second encryption key in memory on the mobile device.

5. A method of printing using a mobile device, comprising:

generating a symmetrical pair of encryption keys including a first encryption key and a second encryption key;

generating a print request;

transmitting the first encryption key and the print request to an imaging device;

receiving a request from the imaging device for the second encryption key; and

transmitting the second encryption key to the imaging device, whereby the imaging device uses the second encryption key to decrypt encrypted rendered content to create decrypted rendered content and prints the decrypted rendered content.

6. A method of printing, comprising:

generating on a mobile device a symmetrical pair of encryption keys, the pair including a first encryption key and a second encryption;

generating a print request on the mobile device;

transmitting the first encryption key and the print request to an imaging device;

transmitting the first encryption key and the print request from the imaging device to a print service;

retrieving content identified in the print request;

rendering the content to create rendered content;

encrypting the rendered content with the first encryption key to create encrypted rendered content;

transmitting the encrypted rendered content from the print service to the imaging device;

transmitting a request for the second encryption key from the imaging device to the mobile device;

transmitting the second encryption key from the mobile device to the imaging device;

decrypting the encrypted rendered content using the second encryption key to create decrypted rendered content; and

printing the decrypted rendered content.

7. A method of printing on an imaging device, comprising:

receiving a first encryption key and a print request from a mobile device;

transmitting the first encryption key and the print request to a print service;

receiving encrypted rendered content from the print service;

requesting a second encryption key from the mobile device;

receiving the second encryption key from the mobile device;

decrypting the encrypted rendered content using the second encryption key to create a decrypted rendered content; and

printing the decrypted rendered content.

8. The method of claim 7, wherein the first encryption key and the second encryption key comprise a symmetrical pair of encryption keys.

9. The method of claim 7, wherein the print request includes a uniform resource locator that indicates a location of content to be printed.

10. The method of claim 7, wherein the steps of receiving the first encryption key and the print request and receiving the second encryption key each comprise receiving via a wireless communication protocol.

11. The method of claim 7, further comprising the step of storing the first encryption key and the second encryption key in memory on the imaging device.

12. A method of processing a print request on an imaging device, comprising:

receiving a first encryption key and a print request from a mobile device;

transmitting the first encryption key and the print request to a print service;

receiving encrypted rendered content from the print service;

requesting a second encryption key from the mobile device; and

after a predetermined period during which the second encryption key is not received from the mobile device, canceling the print request.

13. The method of claim 12, wherein the first encryption key and the second encryption key comprise a symmetrical pair of encryption keys.

14. The method of claim 12, wherein the print request includes a uniform resource locator that indicates a location of content to be printed.

15. The method of claim 12, wherein the step of receiving the first encryption key and the print request comprises receiving via a wireless communication protocol.

16. The method of claim 12, further comprising the step of storing the first encryption key in memory on the imaging device.

17. The method of claim 12, further comprising the steps of:

after requesting a second encryption key from the mobile device, determining whether the second encryption key has been received; and

if the second encryption key has not been received, then determining whether the predetermined period has expired.

18. The method of claim 12, further comprising the step of:

if the second encryption key is received before the predetermined period has expired, then decrypting the encrypted rendered content using the second encryption key to create a decrypted rendered content and printing the decrypted rendered content.

19. A method of printing on an imaging device, comprising:

receiving encrypted rendered content and an address of a mobile device from a print service;

requesting an encryption key from the mobile device;

receiving the encryption key from the mobile device;

decrypting the encrypted rendered content using the encryption key to create a decrypted rendered content; and

printing the decrypted rendered content.

20. A computer program product for mobile printing comprising:

code that generates a symmetrical pair of encryption keys, the pair including a first encryption key and a second encryption key;

code that generates a print request;

code that transmits the first encryption key and the print request to an imaging device;

code that receives a request from the imaging device for the second encryption key; and

code that transmits the second encryption key to the imaging device, whereby the imaging device uses the second encryption key to decrypt encrypted rendered content to create decrypted rendered content and prints the decrypted rendered content.