US 2019/0173675 A1Published application

Crypto-erasure resilient to network outage

AssigneeEMC IP Holding Company LLC

InventorCharles W. Kaufman

Life of this patent

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Abstract

Providing a server polling component for remote cryptographic key erasure resilient to network outage. A set of keys received from a server are stored on data storage. The data storage sends a status request to the server. If a key enabled status is received, the data storage continues normal operations. If a key disabled status is received, a key failure action is performed. The key failure action includes deleting one or more of the keys in the set of keys or shutting down one or more storage devices of the data storage. If no response is received from the server, the data storage iteratively resends the status request at retry time intervals until a response is received from the server or until a time out period expires. On expiration of the time out period, the key failure action is performed.

Claims5

Dependent claims

One or more computer storage media embodying computer executable components, said components comprising a server polling component that, when executed, cause at least one processor to:

send a key request to an external key server, the key request is a request for a set of keys stored on the external key server, the set of keys corresponding to a portion of encrypted data stored on a data storage;
utilize a local copy of the set of keys to decrypt the portion of the encrypted data on receiving a key enabled status from the external key server, the key enabled status indicating the set of keys are available from the key server;
initiate a key failure action on receiving a key unavailable response indicating at least one key in the set of keys is unavailable from the key server;
and
on determining a time out period is reached without receiving a response to the key request from the key server, perform the key failure action.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/270,254Filed 7 Feb 2019
Priority: 30 Mar 2016
Published: 6 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04L 9/0891
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: revocation or update of secret…
H04L 9/0822
Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely…: using…
H04L 9/083
Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely…:…
H04L 9/0894
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: escrow, recovery or storing of secret…

Family

Application15/085,890Division · filed 30 Mar 2016
Application16/270,254Division
US 10,205,594 B1Related patent
US 10,680,813 B2Related patent
US 2019/0173675 A1This patent

From the US filing history. Foreign family members aren’t listed.

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