| 摘要 |
In one embodiment of the present invention a secure cryptographic device is provided. The device includes a power supply interface, a cryptographic processing block coupled to the power supply interface, a random number generator, and a complex multiplication circuit. The complex multiplication circuit has an output coupled to the power supply interface for modulating a power variation waveform detectable on the power supply interface. The complex multiplication circuit also has a first input coupled to an output of the random number generator and a second input coupled to the power supply interface.
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