EFFICIENT STORAGE OF ENCRYPTED DATA IN A DISPERSED STORAGE NETWORK

摘要

A method for storing a data object includes identifying data segments of the data object. The method continues with generating key indexes for the data segments. For a data segment, the method continues with accessing data segment key information based on a corresponding key index of the plurality of key indexes to determine whether an encryption key has been generated for a similar data segment. When the encryption key has been generated for the similar data segment, the method continues with using the encryption key to encrypt the data segment to produce an encrypted data segment. The method continues with compressing the encrypted data segment to produce a compressed and encrypted data segment. The method continues with storing the compressed and encrypted data segment in a storage unit of a dispersed storage network (DSN).

主权项

1. A method for storing a data object, the method comprises:
identifying a plurality of data segments of the data object; generating a plurality of key indexes for the plurality of data segments; for a data segment of the plurality of data segments:
accessing data segment key information based on a corresponding key index of the plurality of key indexes to determine whether an encryption key has been generated for a similar data segment, wherein the encryption key is a representation of the similar data segment;when the encryption key has been generated for the similar data segment:
using the encryption key to encrypt the data segment to produce an encrypted data segment;compressing the encrypted data segment to produce a compressed and encrypted data segment; andstoring the compressed and encrypted data segment in a storage unit of a dispersed storage network (DSN).