Dynamic Multi-Party Computation for Securely Utilizing and Storing a Secret Data-Item

Dynamic multi-party computation for securely utilizing and storing a secret data-item. A method includes: (a) receiving or generating a secret data-item (S); (b) dividing the secret data-item (S) into shares; (c) at a first electronic device, locally encrypting a first share (S-1) into a first encry...

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Bibliographische Detailangaben
Hauptverfasser:	Turgeman, Avi, Yeshayahu, Kfir
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES PHYSICS SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	Dynamic multi-party computation for securely utilizing and storing a secret data-item. A method includes: (a) receiving or generating a secret data-item (S); (b) dividing the secret data-item (S) into shares; (c) at a first electronic device, locally encrypting a first share (S-1) into a first encrypted share (ES-1), by using a private encryption key of the first electronic device as encryption key; (d) at a second, different, electronic device, locally encrypting a second share (S-2) into a second encrypted share (ES-2), by using a private encryption key of the second electronic device as encryption key; (e) storing the first encrypted share (ES-1) and the second encrypted share (ES-2) on one or more storage devices; (f) subsequently, dynamically replacing the first encrypted share (ES-1) with a replacement encrypted share (ES-1B) that is the first share (S-1) of the secret data-item encrypted by using a private encryption key of a third electronic device as encryption key.