Patent ID: 8607056
Filing Date: 2013-12-10
Classification: G06K,H04L

Abstract:
1. A system for providing a cryptographic key using an external key, the system comprising: a first data store for storing an authorization key; a second data store, separate from the first data store, for storing a secure key and a public key, wherein the secure key comprises one of the cryptographic key and a number required to generate the cryptographic key, and wherein the public key is associated with an associated private key by an asymmetric encryption algorithm; an access controller operable to allow access to the secure key stored in the second data store only to an access request accompanied by a digital signature generated using the private key corresponding to the stored public key; a key generator operable to receive an external key and to generate the private key using the received external key and the stored authorization key using a mapping function; and an access request signal generator operable to generate a digital signature using the private key and to transmit an access request, including the generated digital signature, to the access controller in order to retrieve the secure key.