Invention Grant
- Patent Title: SQL extension for secure encryption key transfer
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Application No.: US16677134Application Date: 2019-11-07
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Publication No.: US11563563B2Publication Date: 2023-01-24
- Inventor: Rajnish Chitkara , Ramesh Gupta , Asif Iqbal Desai
- Applicant: SAP SE
- Applicant Address: DE Walldorf
- Assignee: SAP SE
- Current Assignee: SAP SE
- Current Assignee Address: DE Walldorf
- Agency: Fountainhead Law Group P.C.
- Main IPC: H04L9/08
- IPC: H04L9/08 ; H04L9/14

Abstract:
Embodiments afford secure transfer of security key type(s) between different database servers having different key hierarchies. For example, a key transfer may occur from a source server to a target server during a database migration process. Particular embodiments comprise a SQL transfer command statement (e.g., TRANSFER ENCRYPTION KEY) recognized by an engine. Syntax of the SQL transfer command includes a password and a filename for a security key. Upon receiving the SQL transfer command, the engine references an information repository to identify a relevant key hierarchy and key type, encrypts the security key with a key derived from password, and stores (exports) the encrypted security key in a file for consumption (import) at the target server. The SQL transfer command may further comprise a direction component determining flow of key information, and an override function to deal with error messages arising from any already-existing security key having the same name.
Public/Granted literature
- US20210143989A1 SQL Extension for Secure Encryption Key Transfer Public/Granted day:2021-05-13
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