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Armored Core of PKI: Remove Signing Keys for CA via Physically Unclonable Function
April 25, 2024, 7:11 p.m. | Xiaolin Zhang, Chenghao Chen, Kailun Qin, Chi Zhang, Shipei Qu, Tengfei Wang, Yuxuan Wang, Dawu Gu
cs.CR updates on arXiv.org arxiv.org
Abstract: The protection of CA's signing keys is one of the most crucial security concerns in PKI. However, these keys can still be exposed today by human errors or various carefully designed attacks. Traditional protections like TEE and HSM fail to eliminate this risk since they can be bypassed by skilled attackers. This dilemma motivates us to consider removing CA' signing keys and propose Armored Core, a PKI security extension applying the physically trusted binding provided …
arxiv attacks can cs.cr errors exposed fail function hsm human keys pki protection remove security security concerns signing today
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