“Designers of chips for secure networks have begun to conclude that the antifuse one-time programmable (OTP) technology is one of the most secure embedded non-volatile memory (eNVM) technologies available today. Antifuse OTP is a configurable on-chip memory implemented in standard CMOS logic with no additional masks or processing steps. Most importantly, antifuse OTP offers exceptional data protection because information stored in an antifuse bitcell provides virtually no evidence of the content inside. The bitcell does not store a charge, which means there’s no electrical state of the memory bit cell. The programming of the bitcell is beneath the gate oxide so the breakdown is not visible with SEM imaging. This protection at the physical layer prevents the antifuse eNVM from being hacked by invasive or semi-invasive attacks. Additional logic is available with the Kilopass IP to prevent passive attacks such as voltage tampering, glitching or differential power analysis. To date, there have been no reports of any successful attempts to extract the contents of an antifuse OTP using any of these techniques.”
“Designers of chips for secure networks have begun to conclude that the antifuse one-time programmable (OTP) technology is one of the most secure embedded non-volatile memory (eNVM) technologies available today. Antifuse OTP is a configurable on-chip memory implemented in standard CMOS logic with no additional masks or processing steps. Most importantly, antifuse OTP offers exceptional data protection because information stored in an antifuse bitcell provides virtually no evidence of the content inside. The bitcell does not store a charge, which means there’s no electrical state of the memory bit cell. The programming of the bitcell is beneath the gate oxide so the breakdown is not visible with SEM imaging. This protection at the physical layer prevents the antifuse eNVM from being hacked by invasive or semi-invasive attacks. Additional logic is available with the Kilopass IP to prevent passive attacks such as voltage tampering, glitching or differential power analysis. To date, there have been no reports of any successful attempts to extract the contents of an antifuse OTP using any of these techniques.”
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