System and method for transmitting and utilizing attachments

• US 9,215,238 B2
• Filed: 11/14/2013
• Issued: 12/15/2015
• Est. Priority Date: 03/20/2002
• Status: Expired due to Fees

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Little, Herbert Anthony, Hecht-Enns, Albert, Tapuska, David Francis, Brown, Michael Stephen, Kirkup, Michael Grant
• Primary Examiner(s): Yalew, Fikremariam A
• Application Number:
  US14/080,025
• Publication Number:
  US 20140075191A1
• Time in Patent Office: 761 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 51/063 Content adaptation, e.g. replacement of unsuitable content
• CPC Class Codes: H04L 51/58 Message adaptation for wireless communication
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/0464 using hop-by-hop encryption, i.e. wherein an intermediate entity decrypts the information and re-encrypts it before forwarding it
• 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 63/12 Applying verification of the received information cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32
• CPC Class Codes: H04L 63/123 received data contents, e.g. message integrity

Abstract

A method of handling cryptographic information in a communication comprising body elements and attachment elements to a mobile device includes the steps of determining if the communication includes an attachment element comprising cryptographic information and converting the attachment element into a body element upon determining that the communication includes an attachment element comprising cryptographic information.

Claims

1. A system for converting attachment information into an inline form in a communication to a mobile device, the system comprising:

a memory subsystem configured to store data;

a processor coupled to the memory subsystem and configured to read data from the memory subsystem; and

an inline generator software module stored in the memory subsystem and executable by the processor,

the inline generator software module being operable to access an extractor data structure comprising one or more conversion conditions associated with one or more attachment element types, each of the conversion conditions defining a conversion criterion for an associated attachment element type,

the inline generator software module also being operable to convert the attachment information into a body element of the communication upon the occurrence of an associated conversion condition associated with an attachment element type of an attachment element comprising the attachment information, the inline generator software module being adapted to;

determine if the communication comprises cryptographic information;

upon determining that the communication comprises cryptographic information, access the extractor data structure to determine if an associated conversion condition has been met; and

upon determining that an associated conversion condition has been met, change a content disposition of the communication from an attachment type to an inline type to create an inline cryptographic entity.

2. The system of claim 1, wherein the inline generator software module is further operable to select a subset of the cryptographic information and include the subset of the cryptographic information in the inline cryptographic entity.

3. The system of claim 2, wherein the cryptographic information is a digital certificate, and wherein the subset of the cryptographic information is a public key.

4. The system of claim 1, wherein:

the extractor data structure further comprises a pre-conversion operation associated with the one or more conversion conditions; and

the inline generator software module is further operable to execute the pre-conversion operation on the attachment element upon the occurrence of an associated conversion condition.

5. The system of claim 4, wherein the inline generator software module is further operable to append conversion information to the communication, the conversion information detailing the conversion of the attachment element of an attachment element type into the body element upon the occurrence of an associated conversion condition.

6. The system of claim 1, wherein the system further comprises the mobile device.

7. The system of claim 1, wherein the communication comprises a Secure Multipurpose Internet Mail Extensions (S/MIME) message.

8. A method of converting attachment information into an inline form in a communication to a mobile device, the method comprising:

accessing an extractor data structure comprising one or more conversion conditions associated with one or more attachment element types, each of the conversion conditions defining a conversion criterion for an associated attachment element type;

converting the attachment information into a body element of the communication upon the occurrence of an associated conversion condition associated with an attachment element type of an attachment element comprising the attachment information;

determining if the communication comprises cryptographic information;

upon determining that the communication comprises cryptographic information, accessing the extractor data structure to determine if an associated conversion condition has been met; and

upon determining that an associated conversion condition has been met, changing a content disposition of the communication from an attachment type to an inline type to create an inline cryptographic entity.

9. The method of claim 8, wherein the extractor data structure further comprises a pre-conversion operation associated with the one or more conversion conditions;

and

wherein the method further comprises executing the pre-conversion operation on the attachment element upon the occurrence of an associated conversion condition.

10. The method of claim 9, wherein the inline generator software module is further operable to append conversion information to the communication, the conversion information detailing the conversion of the attachment element of an attachment element type into the body element upon the occurrence of an associated conversion condition.

11. The method of claim 8, further comprising:

selecting a subset of the cryptographic information; and

including the subset of the cryptographic information in the inline cryptographic entity.

12. The method of claim 11, wherein the cryptographic information is a digital certificate, and wherein the subset of the cryptographic information is a public key.

13. The method of claim 8, wherein the communication comprises a Secure Multipurpose Internet Mail Extensions (S/MIME) message.

14. A non-transitory computer-readable medium storing statements and instructions for execution by a processor to perform operations comprising:

accessing an extractor data structure comprising one or more conversion conditions associated with one or more attachment element types, each of the conversion conditions defining a conversion criterion for an associated attachment element type;

converting the attachment information into a body element of the communication upon the occurrence of an associated conversion condition associated with an attachment element type of an attachment element comprising the attachment information;

determining if the communication comprises cryptographic information;

upon determining that the communication comprises cryptographic information, accessing the extractor data structure to determine if an associated conversion condition has been met; and

upon determining that an associated conversion condition has been met, changing a content disposition of the communication from an attachment type to an inline type to create an inline cryptographic entity.

15. The computer-readable medium of claim 14, wherein the extractor data structure further comprises a pre-conversion operation associated with the one or more conversion conditions;

and

wherein the method further comprises executing the pre-conversion operation on the attachment element upon the occurrence of an associated conversion condition.

16. The computer-readable medium of claim 15, wherein the inline generator software module is further operable to append conversion information to the communication, the conversion information detailing the conversion of the attachment element of an attachment element type into the body element upon the occurrence of an associated conversion condition.

17. The computer-readable medium of claim 14, further comprising:

selecting a subset of the cryptographic information; and

including the subset of the cryptographic information in the inline cryptographic entity.

18. The computer-readable medium of claim 17, wherein the cryptographic information is a digital certificate, and wherein the subset of the cryptographic information is a public key.

19. The computer-readable medium of claim 14, wherein the communication comprises a Secure Multipurpose Internet Mail Extensions (S/MIME) message.