Invention Grant
US09323909B1 Sharing a cryptographic device by partitioning challenge-response space 有权
通过分配挑战响应空间来共享加密设备

Sharing a cryptographic device by partitioning challenge-response space
Abstract:
Techniques, apparatus and articles of manufacture are provided herein. A method includes providing a first sub-set of authentication information from a set of authentication information associated with a first cryptographic device issued to a user to a second cryptographic device in connection with a first user authentication request responsive to a request from the user to access a first protected resource, wherein the first sub-set comprises a first set of N pre-computed passcodes and corresponding challenges, and providing a second sub-set of authentication information from the set of authentication information associated with the first cryptographic device to a third cryptographic device in connection with a second user authentication request responsive to a request from the user to access a second protected resource, wherein the second sub-set comprises a second set of N pre-computed passcodes and corresponding challenges.
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