Patents by Inventor Xinnong Wang

Xinnong Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Key encryption key (KEK) rotation for multi-tenant (MT) system
    Patent number: 11374749
    Abstract: An example method facilitates enabling Key Encryption Key (KEK) rotation for a running multi-tenant system without requiring system downtime or interruption. The example method facilitates decrypting a set of one or more DEKs using a preexisting KEK; using a new KEK to re-encode the DEKs using the new KEK, all while simultaneously enabling servicing of tenant requests. This is enabled in part, by strategic caching of tenant DEKs in a secure local memory, wherein the cached tenant DEKs are maintained in the clear and are readily accessible to running processes that are using the DEKs to decrypt and access tenant data, irrespective of the state of a background process used to implement the KEK rotation to the new KEK.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: June 28, 2022
    Assignee: Oracle International Corporation
    Inventors: Amit Agarwal, Rohit Koul, Srikant Krishnapuram Tirumalai, Jie Wang, Xinnong Wang
  • KEY ENCRYPTION KEY (KEK) ROTATION FOR MULTI-TENANT (MT) SYSTEM
    Publication number: 20210014056
    Abstract: An example method facilitates enabling Key Encryption Key (KEK) rotation for a running multi-tenant system without requiring system downtime or interruption. The example method facilitates decrypting a set of one or more DEKs using a preexisting KEK; using a new KEK to re-encode the DEKs using the new KEK, all while simultaneously enabling servicing of tenant requests. This is enabled in part, by strategic caching of tenant DEKs in a secure local memory, wherein the cached tenant DEKs are maintained in the clear and are readily accessible to running processes that are using the DEKs to decrypt and access tenant data, irrespective of the state of a background process used to implement the KEK rotation to the new KEK.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Applicant: Oracle International Corporation
    Inventors: Amit Agarwal, Rohit Koul, Srikant Krishnapuram Tirumalai, Jie Wang, Xinnong Wang
  • Key encryption key (KEK) rotation for multi-tenant (MT) system
    Patent number: 10819513
    Abstract: An example method facilitates enabling Key Encryption Key (KEK) rotation for a running multi-tenant system without requiring system downtime or interruption. The example method facilitates decrypting a set of one or more DEKs using a preexisting KEK; using a new KEK to re-encode the DEKs using the new KEK, all while simultaneously enabling servicing of tenant requests. This is enabled in part, by strategic caching of tenant DEKs in a secure local memory, wherein the cached tenant DEKs are maintained in the clear and are readily accessible to running processes that are using the DEKs to decrypt and access tenant data, irrespective of the state of a background process used to implement the KEK rotation to the new KEK.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: October 27, 2020
    Assignee: Oracle International Corporation
    Inventors: Amit Agarwal, Rohit Koul, Srikant Krishnapuram Tirumalai, Jie Wang, Xinnong Wang
  • KEY ENCRYPTION KEY (KEK) ROTATION FOR MULTI-TENANT (MT) SYSTEM
    Publication number: 20190173674
    Abstract: An example method facilitates enabling Key Encryption Key (KEK) rotation for a running multi-tenant system without requiring system downtime or interruption. The example method facilitates decrypting a set of one or more DEKs using a preexisting KEK; using a new KEK to re-encode the DEKs using the new KEK, all while simultaneously enabling servicing of tenant requests. This is enabled in part, by strategic caching of tenant DEKs in a secure local memory, wherein the cached tenant DEKs are maintained in the clear and are readily accessible to running processes that are using the DEKs to decrypt and access tenant data, irrespective of the state of a background process used to implement the KEK rotation to the new KEK.
    Type: Application
    Filed: April 9, 2018
    Publication date: June 6, 2019
    Applicant: Oracle International Corporation
    Inventors: Amit Agarwal, Rohit Koul, Srikant Krishnapuram Tirumalai, Jie Wang, Xinnong Wang