Zero-knowledge encryption protocol for sensitive data

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United States of America Patent

PATENT NO 12028441
APP PUB NO 20230125608A1
SERIAL NO

17509490

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Abstract

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Disclosed herein are system, method, and computer program product embodiments for encrypting and decrypting a sensitive data item using a zero-knowledge encryption protocol. An embodiment operates by receiving a request to decrypt the sensitive data item from a client. The embodiment retrieves the requested sensitive data item from a data store. The embodiment generates a result set by replacing a ciphertext value of the sensitive data item to be stored in the result set with a placeholder identifier. The embodiment retrieves a data encryption key (DEK) block from a DEK manager, wherein the DEK block comprises a DEK associated with the sensitive data item. The embodiment generates and encrypts a cipher ticket comprising the ciphertext value of the sensitive data item. The embodiment then sends the result set, the cipher ticket, and the DEK block to the client for decryption of the ciphertext value of the sensitive data item.

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Patent Owner(s)

Patent OwnerAddress
SAP SEDIETMAR-HOPP-ALLEE 16 WALLDORF 69190

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dexheimer, Vladislav Heidelberg, DE 1 0
Lucius, Roland Wiesbaden, DE 4 78
Roeder, Marc Alexander Wiesloch, DE 1 0

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