Storing encrypted chunksets of data in a vast storage network

A computing device of a storage network comprises:

• a first module, when operable within the computing device, causes the computing device to:
• encode data using a dispersed storage error encoding function to produce a plurality of sets of encoded data slices, wherein the encoded data slices of the plurality of sets of encoded data slices are arranged into chunksets of encoded data slices;
• select a set of storage units for the chunksets of slices;
• and
• assign one or more distributed computing tasks to each storage unit of the set of storage units;
• a second module, when operable within the computing device, causes the computing device to:
• generate a unique key set for each storage unit of the set of storage units based on at least one of:
• an assigned partial task for a corresponding storage unit, information regarding the storage unit, information regarding key generation and a pseudo random function;
• and
• encrypt a chunkset of the chunksets of slices with a corresponding one of the unique key sets to produce an encrypted chunkset;
• and
• a third module, when operable within the computing device, causes the computing device to:
• send the encrypted chunkset and an indication of a corresponding distributed computing task to the storage unit for storage of the encrypted chunkset and execution of the distributed computing task on the encrypted chunkset.

A method for execution by one or more processing modules of one or more computing devices of a storage network, the method comprises:

• encoding data using a dispersed storage error encoding function to produce a plurality of sets of encoded data slices, wherein the encoded data slices of the plurality of sets of encoded data slices are arranged into a plurality of chunksets of encoded data slices;
• selecting a set of storage units for storing the plurality of chunksets;
• generating a unique key set for each storage unit of the set of storage units;
• encrypting each chunkset of encoded data slices using a corresponding one of the unique key sets to produce a plurality of encrypted chunksets;
• and
• sending an encrypted chunkset of the plurality of encrypted chunksets to each storage unit of the set of storage units.