Cryptographic circuit with voltage-based tamper detection and response circuitry
First Claim
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1. A cryptographic circuit with voltage island-based tamper detection and response, said circuit comprising:
- a voltage island having at least a first monitoring circuit;
a first storage area for security parameters;
a second storage area for key storage; and
management logic to tamper said security parameters upon detection of an environmental failure by said first monitoring circuit.
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Abstract
A cryptographic circuit with voltage island-based tamper detection and response is disclosed. The circuit includes a voltage island having at least one monitoring circuit and a first storage area for security parameters. The circuit also includes a second storage area for key storage and management logic to tamper the security parameters upon detection of an environmental failure.
53 Citations
20 Claims
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1. A cryptographic circuit with voltage island-based tamper detection and response, said circuit comprising:
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a voltage island having at least a first monitoring circuit;
a first storage area for security parameters;
a second storage area for key storage; and
management logic to tamper said security parameters upon detection of an environmental failure by said first monitoring circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cryptographic circuit with voltage island-based tamper detection and response, said circuit comprising:
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a first voltage island hosting a first monitoring sensor and a cryptographic and system function unit; and
a second voltage island hosting a second monitoring sensor, a secure data storage unit holding one or more security parameters, a third monitoring sensor, and control logic to tamper said security parameters in said secure data storage unit upon detection of an environmental failure by one of said first monitoring sensor, said second monitoring sensor and said third monitoring sensor. - View Dependent Claims (9, 10, 11, 12)
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13. A circuit for voltage island-based tamper detection, said circuit comprising:
a voltage island residing on a larger Integrated circuit chip, said chip comprising at least one monitoring circuit, a storage area for secret data, and management logic to zeroize said secret data upon detection of tampering or environmental failure. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
Specification