NOT true. TPM_ECC_CURVE_448
exists in the TCG algorithm registry. Table 5.1 in this same specifications enumerates ECC curves supported by TPM firmware (or in the spec TCG āTPM 2.0 Libraryā) interface.
Sometimes features can even land through firmware updates. especially for fTPMās in Intel, ARM (via SMC AMD CPUās this is feasible approach.
Iāve been also started to lobby the idea of getting P256K1 to the registry based on principle of equally feasible playing field for established corporations and growth companies of variable side (aka startups):
Iām going to also write P256K1 software primitives to Linux kernel to enable more secure options for managing that sort of assets.
I do it part of my role as Linux kernel key-ring co-maintainer. My job is to identity widely use key types, enable them and call it a day, i.e. create equal capitalist market place for every actor.
I would enable P256K1 even if I hated blockchains by guts because it is my freaking job :-) Liking and disliking about stuff is part of leisure time (or when getting drunk which is part of leisure time ;-)).
OK so this is how these are:
They are all in the TCG Algorithm Registry so it is up to firmware updates to support it. TCG specifications have all assets to implement 448 signing (I just checked).
@jarkko @duxsco @jarkko egov here in Estonia I based on KSI blockchain, perhaps you can find hints here https://github.com/guardtime/libksi to my knowledge, big portion of Estonian egov is opensourced see here https://github.com/e-gov
Do want to slander our neighbor nation but Iām bit skeptical towards claim that Estonia had its first blockchain in 2007.
Bitcoin paper came out in 31st of October, 2008, so possible conclusions:
Without better knowledge, bullet 2 is pretty good base assumption. Or who knows, perhaps Satoshi Nakamoto is an Estonian citizen or a group of citizens.
@jarkko @duxsco @jarkko I donāt know, we can discuss if KSI is actually blockchain. For sure itās developer Guardtime saying KSI was first developed in 2008 and e-Estonia for com website mentioning that KSI was developed after Estonias experience with the 2007 cyber attacks. I am referring http://e-estonia.com/solutions/cyber-security/ksi-blockchain/ but you are right that the infographic on the page refers to 2007.