Security system with entropy bits
AssigneeeMemory Technology Inc.
InventorsHsin-Ming Chen, Meng-Yi Wu, Po-Hao Huang
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Abstract
A security system with entropy bits includes a physically unclonable function circuit, and a security key generator. The physically unclonable function circuit provides a plurality of entropy bit strings. The security key generator generates a security key by manipulating a manipulation bit string derived from the plurality of entropy bit strings according to an operation entropy bit string. Each bit of the operation entropy bit string is used to determine whether to perform a corresponding operation to the manipulation bit string.
Claims33
A security system with entropy bits comprising:
- a physically unclonable function (PUF) circuit configured to provide a plurality of entropy bit strings;
- and
- a security key generator configured to generate a security key by manipulating a manipulation bit string derived from the plurality of entropy bit strings according to an operation entropy bit string;
- wherein each bit of the operation entropy bit string is configured to determine whether to perform a corresponding operation to the manipulation bit string.
A method for operating a security system with entropy bits, the security system comprising a physically unclonable function (PUF) circuit and a security key generator, and the method comprising:
- the physically unclonable function circuit providing a plurality of entropy bit strings;
- deriving a manipulation bit string from the plurality of entropy bit strings;
- and
- the security key generator generating a security key by manipulating the manipulation bit string according to an operation entropy bit string;
- wherein each bit of the operation entropy bit string is configured to determine whether to perform a corresponding operation to the manipulation bit string.
Dependencies are inferred from the claim text.