METHOD FOR SECURE ACCESS TO DATA

Provided are a system and a method for secure access to data, where the data comprises a number of data records each assigned to an entity, such as a user, and where the data records are stored in encrypted form in a database. A first decryption key assigned to a particular entity is used to decrypt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JÄGER, Hubert, PERLE, Hans-Christian, RIEKEN, Ralf
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:Provided are a system and a method for secure access to data, where the data comprises a number of data records each assigned to an entity, such as a user, and where the data records are stored in encrypted form in a database. A first decryption key assigned to a particular entity is used to decrypt the data records assigned to the particular entity. The first decryption keys are stored in a volatile memory, and the first decryption keys assigned to the particular entity are encrypted by an encryption key assigned to the particular entity, and the encrypted first decryption keys are stored in a permanent memory. After the volatile memory is cleared, the encrypted first decryption keys are copied from the permanent memory into the volatile memory, and in the volatile memory, the first decryption keys are decrypted by a second decryption key assigned to the particular entity.