RENEWAL PROCESSING OF DIGITAL CERTIFICATES IN AN ASYNCHRONOUS MESSAGING ENVIRONMENT

• US 20130238895A1
• Filed: 03/12/2012
• Published: 09/12/2013
• Est. Priority Date: 03/12/2012
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Dixon, Bret W., Dixon, Scot W.
• Granted Patent: US 8,856,514 B2
• Time in Patent Office: Days
• US Class Current: 713/156
• CPC Class Codes: G06F 21/33 using certificates
• CPC Class Codes: H04L 63/045 wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption cryptographic mechanisms or cryptographic arrangements using a plurality of keys or algorithms H04L9/14
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 9/0825 using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
• CPC Class Codes: H04L 9/3265 using certificate chains, trees or paths; Hierarchical trust model
• CPC Class Codes: H04L 9/3268 using certificate validation, registration, distribution or revocation, e.g. certificate revocation list [CRL]
• CPC Class Codes: H04N 21/835 Generation of protective data, e.g. certificates protecting software against unauthorised usage in a vending or licensing environment G06F21/10

Abstract

A renewed digital certificate is obtained within an asynchronous messaging environment from a certificate server of an issuer of an existing digital certificate to replace the existing digital certificate. The renewed digital certificate includes an extended attribute that stores a serial number value of the existing digital certificate. A message is received with a symmetric key that is encrypted using the existing digital certificate. The symmetric key is identified within the message by the serial number value of the existing digital certificate. The message is processed using the renewed digital certificate.

Claims

1. A method, comprising:

obtaining, within an asynchronous messaging environment from a certificate server of an issuer of an existing digital certificate, a renewed digital certificate to replace the existing digital certificate, where the renewed digital certificate comprises an extended attribute that stores a serial number value of the existing digital certificate;

receiving a message with a symmetric key encrypted using the existing digital certificate and identified within the message via the serial number value of the existing digital certificate; and

processing the message using the renewed digital certificate.

2. The method of claim 1, where the existing digital certificate comprises one of an expired digital certificate and a certificate determined to expire within a configured time relative to an expiration date of the existing digital certificate.

3. The method of claim 1, where obtaining, within the asynchronous messaging environment from the certificate server of the issuer of the existing digital certificate, the renewed digital certificate to replace the existing digital certificate comprises:

sending, in response to determining that the existing digital certificate is expired, the existing digital certificate to the certificate server of the issuer of the existing digital certificate;

receiving the renewed digital certificate from the certificate server of the issuer of the existing digital certificate, where the renewed digital certificate comprises a subject distinguished name (DN), a public key, and an issuer identifier of the issuer of the existing digital certificate, and the extended attribute storing the serial number value of the existing digital certificate; and

designating the renewed digital certificate as valid for asynchronous message processing.

4. The method of claim 1, where obtaining, within the asynchronous messaging environment from the certificate server of the issuer of the existing digital certificate, the renewed digital certificate to replace the existing digital certificate comprises:

extracting, in response to determining that the existing digital certificate is expired, the serial number value, a subject distinguished name (DN), and a public key from the existing digital certificate;

sending the extracted serial number value, subject distinguished name (DN), and public key, and the extended attribute to the certificate server of the issuer of the existing digital certificate;

receiving the renewed digital certificate from the certificate server of the issuer of the existing digital certificate, where the renewed digital certificate comprises the subject distinguished name (DN), the public key, and an issuer identifier of the issuer of the existing digital certificate, and the extended attribute storing the serial number value of the existing digital certificate; and

designating the renewed digital certificate as valid for asynchronous message processing.

5. The method of claim 1, where the renewed digital certificate further comprises an issuer identifier that matches an issuer identifier of the existing digital certificate, and where:

processing the message using the renewed digital certificate comprises;

identifying the symmetric key encrypted using the existing digital certificate within a message payload of the received message using the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate.

6. The method of claim 1, where the renewed digital certificate further comprises an issuer identifier that matches an issuer identifier of the existing digital certificate, and where:

processing the message using the renewed digital certificate comprises;

determining whether the symmetric key encrypted using the existing digital certificate in a message payload matches the issuer identifier and a serial number value of the renewed digital certificate; and

determining, in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload does not match the issuer identifier and the serial number value of the renewed digital certificate, whether the symmetric key encrypted using the existing digital certificate in the message payload matches the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate.

7. The method of claim 6, further comprising:

in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload matches the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate;

validating the renewed digital certificate; and

in response to successful validation of the renewed digital certificate;

decrypting the symmetric key using a private key of the renewed digital certificate;

decrypting the received message payload using the decrypted symmetric key; and

processing the decrypted message payload; and

in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload does not match the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate;

generating an error indicating that the symmetric key encrypted using the existing digital certificate was not found in the message payload.

8. A system, comprising:

a memory that stores an existing digital certificate; and

a processor programmed to;

obtain, within an asynchronous messaging environment from a certificate server of an issuer of the existing digital certificate, a renewed digital certificate to replace the existing digital certificate, where the renewed digital certificate comprises an extended attribute that stores a serial number value of the existing digital certificate;

store the renewed digital certificate to the memory;

receive a message with a symmetric key encrypted using the existing digital certificate and identified within the message via the serial number value of the existing digital certificate; and

process the message using the renewed digital certificate.

9. The system of claim 8, where the existing digital certificate comprises one of an expired digital certificate and a certificate determined to expire within a configured time relative to an expiration date of the existing digital certificate.

10. The system of claim 8, where in being programmed to obtain, within the asynchronous messaging environment from the certificate server of the issuer of the existing digital certificate, the renewed digital certificate to replace the existing digital certificate, the processor is programmed to:

send, in response to determining that the existing digital certificate is expired, the existing digital certificate to the certificate server of the issuer of the existing digital certificate;

receive the renewed digital certificate from the certificate server of the issuer of the existing digital certificate, where the renewed digital certificate comprises a subject distinguished name (DN), a public key, and an issuer identifier of the issuer of the existing digital certificate, and the extended attribute storing the serial number value of the existing digital certificate; and

designate the renewed digital certificate as valid for asynchronous message processing.

11. The system of claim 8, where in being programmed to obtain, within the asynchronous messaging environment from the certificate server of the issuer of the existing digital certificate, the renewed digital certificate to replace the existing digital certificate, the processor is programmed to:

extract, in response to determining that the existing digital certificate is expired, the serial number value, a subject distinguished name (DN), and a public key from the existing digital certificate;

send the extracted serial number value, subject distinguished name (DN), and public key, and the extended attribute to the certificate server of the issuer of the existing digital certificate;

receive the renewed digital certificate from the certificate server of the issuer of the existing digital certificate, where the renewed digital certificate comprises the subject distinguished name (DN), the public key, and an issuer identifier of the issuer of the existing digital certificate, and the extended attribute storing the serial number value of the existing digital certificate; and

designate the renewed digital certificate as valid for asynchronous message processing.

12. The system of claim 8, where the renewed digital certificate further comprises an issuer identifier that matches an issuer identifier of the existing digital certificate, and where:

in being programmed to process the message using the renewed digital certificate, the processor is programmed to;

identify the symmetric key encrypted using the existing digital certificate within a message payload of the received message using the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate.

13. The system of claim 8, where the renewed digital certificate further comprises an issuer identifier that matches an issuer identifier of the existing digital certificate, and where:

in being programmed to process the message using the renewed digital certificate, the processor is programmed to;

determine whether the symmetric key encrypted using the existing digital certificate in a message payload matches the issuer identifier and a serial number value of the renewed digital certificate; and

determine, in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload does not match the issuer identifier and the serial number value of the renewed digital certificate, whether the symmetric key encrypted using the existing digital certificate in the message payload matches the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate.

14. The system of claim 13, where the processor is further programmed to:

in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload matches the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate;

validate the renewed digital certificate; and

in response to successful validation of the renewed digital certificate;

decrypt the symmetric key using a private key of the renewed digital certificate;

decrypt the received message payload using the decrypted symmetric key; and

process the decrypted message payload; and

in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload does not match the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate;

generate an error indicating that the symmetric key encrypted using the existing digital certificate was not found in the message payload.

15. A computer program product comprising a computer readable storage medium including computer readable program code, where the computer readable program code when executed on a computer causes the computer to:

obtain, within an asynchronous messaging environment from a certificate server of an issuer of an existing digital certificate, a renewed digital certificate to replace the existing digital certificate, where the renewed digital certificate comprises an extended attribute that stores a serial number value of the existing digital certificate;

receive a message with a symmetric key encrypted using the existing digital certificate and identified within the message via the serial number value of the existing digital certificate; and

process the message using the renewed digital certificate.

16. The computer program product of claim 15, where the existing digital certificate comprises one of an expired digital certificate and a certificate determined to expire within a configured time relative to an expiration date of the existing digital certificate.

17. The computer program product of claim 15, where in causing the computer to obtain, within the asynchronous messaging environment from the certificate server of the issuer of the existing digital certificate, the renewed digital certificate to replace the existing digital certificate, the computer readable program code when executed on the computer causes the computer to:

send, in response to determining that the existing digital certificate is expired, the existing digital certificate to the certificate server of the issuer of the existing digital certificate;

receive the renewed digital certificate from the certificate server of the issuer of the existing digital certificate, where the renewed digital certificate comprises a subject distinguished name (DN), a public key, and an issuer identifier of the issuer of the existing digital certificate, and the extended attribute storing the serial number value of the existing digital certificate; and

designate the renewed digital certificate as valid for asynchronous message processing.

18. The computer program product of claim 15, where in causing the computer to obtain, within the asynchronous messaging environment from the certificate server of the issuer of the existing digital certificate, the renewed digital certificate to replace the existing digital certificate, the computer readable program code when executed on the computer causes the computer to:

extract, in response to determining that the existing digital certificate is expired, the serial number value, a subject distinguished name (DN), and a public key from the existing digital certificate;

send the extracted serial number value, subject distinguished name (DN), and public key, and the extended attribute to the certificate server of the issuer of the existing digital certificate;

receive the renewed digital certificate from the certificate server of the issuer of the existing digital certificate, where the renewed digital certificate comprises the subject distinguished name (DN), the public key, and an issuer identifier of the issuer of the existing digital certificate, and the extended attribute storing the serial number value of the existing digital certificate; and

designate the renewed digital certificate as valid for asynchronous message processing.

19. The computer program product of claim 15, where the renewed digital certificate further comprises an issuer identifier that matches an issuer identifier of the existing digital certificate, and where:

in causing the computer to process the message using the renewed digital certificate, the computer readable program code when executed on the computer causes the computer to;

identify the symmetric key encrypted using the existing digital certificate within a message payload of the received message using the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate.

20. The computer program product of claim 15, where the renewed digital certificate further comprises an issuer identifier that matches an issuer identifier of the existing digital certificate, and where:

in causing the computer to process the message using the renewed digital certificate, the computer readable program code when executed on the computer causes the computer to;

determine whether the symmetric key encrypted using the existing digital certificate in a message payload matches the issuer identifier and a serial number value of the renewed digital certificate; and

determine, in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload does not match the issuer identifier and the serial number value of the renewed digital certificate, whether the symmetric key encrypted using the existing digital certificate in the message payload matches the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate.

21. The computer program product of claim 20, where the computer readable program code when executed on the computer further causes the computer to:

in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload matches the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate;

validate the renewed digital certificate; and

in response to successful validation of the renewed digital certificate;

decrypt the symmetric key using a private key of the renewed digital certificate;

decrypt the received message payload using the decrypted symmetric key; and

process the decrypted message payload; and

in response to determining that the symmetric key encrypted using the existing digital certificate in the message payload does not match the issuer identifier of the renewed digital certificate and the serial number value of the existing digital certificate stored within the extended attribute of the renewed digital certificate;

generate an error indicating that the symmetric key encrypted using the existing digital certificate was not found in the message payload.