Patent attributes
A method for cryptographic key management for managing access control is provided. A key is divided into a plurality of portions of the key. Pre-encryption contextual data is received for each of a plurality of devices. The pre-encryption contextual data indicates at least one attribute of a respective device of the plurality of devices before an encryption of the plurality of portions of the key is performed. The plurality of portions of the key are encrypted based at least on the pre-encryption contextual data of the plurality of devices to make the plurality of the portions of the key dependent at least on contextual data corresponding pre-encryption contextual data. Each of the plurality of encrypted portions of the key is distributed to a respective device of the plurality of devices for storage and retrieval.
