I was reading up on the recently disclosed Hertzbleed side channel attack(s).
It was speculated on Twitter that the Bitcoin cryptography library libsecp256k1 is not susceptible to these attacks. Firstly, is this true and why? Secondly, if it is true should these protections (e.g. blinding factors) be implemented in other cryptography libraries (not necessarily Bitcoin, cryptocurrency related) to protect against these attacks?