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1.发明公开
公开(公告)号：EP4383645A1
公开(公告)日：2024-06-12
申请号：EP23213714.1
申请日：2023-12-01
CPC分类号： H04L9/3278 , H04L9/3247 , H04L9/0866
摘要： An electronic device interfaced with a multiple digital signatures security engine, internally or externally, which enable the device to obtain PUF-based security credentials with the option to generate multiple unique digital signatures from the same source of PUF entropy. The multiple digital signatures security zone includes a source of PUF entropy dynamically measurable, a non-volatile memory storage media and a digital circuitry performing all the functions requested by the electronic device interfaced. The electronic device is able to select and switch between which unique digital signature to be involved for its related cybersecurity applications without depending on power-up sequences or single time operations after power-up sequence.
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公开(公告)号：EP4379591A1
公开(公告)日：2024-06-05
申请号：EP23213726.5
申请日：2023-12-01
CPC分类号： H04L2209/2620130101 , H04L2209/1220130101 , H04L2209/3420130101 , H04L9/3278 , H04L9/0866 , G09C1/00 , G06F21/73
摘要： An IC for adaptive PUF stabilization process includes a PUF stabilizer and a non-volatile memory. The PUF stabilizer has PUF units, a statistic processor, a majority voting generator, and a dark-bit masker. The statistic processor is connected to the PUF units, and performs measurements on the PUF units to output results. The majority voting generator is connected to the statistic processor to accumulate the results into a statistic result, which is output as a PUF bit. The dark-bit masker is connected to the PUF units, and marks unstable PUF units bit as dark-bit and create dark-bit masks. The non-volatile memory is connected to the PUF stabilizer to store the dark-bit masks, and the dark-bits are replaced by specific bit sequences provided by the PUF stabilizer. This decreases bit error rates of the PUF measurement results, and allows customization of the quantity of dark bits per dark-bit mask used.
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