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by UI_at_80x24 584 days ago

  As a professional and expert I would love to hear your thoughts and opinions on the use of elliptic curve crypto with SSH.  There was a concern (unsure of the validity) that NSA/NIST had compromised the algorithm used and ECC was unfit for 'secure' communication. 
2048bit RSA has been deprecated since that declaration and while 4096bit is still viable, the smaller key-size of ed25519 is appealing.
2 comments

Ever since the DUAL_EC_DBRG backdoor[1], trust in cryptographic algorithms set by NIST has been reduced.

In the case of ECC curves, the NIST curves rely on a number of highly specific but unexplained constants. More info about the safety and security of curves can be found at https://safecurves.cr.yp.to/

For now, Curve25519 is considered a good bet.

[1] https://en.wikipedia.org/wiki/NIST_SP_800-90A#Backdoor_in_Du...

2048bit RSA is not deprecated...
NIST has deprecated it for government use after 2030, just not today.
well, deprecated does not mean it stops, just that it comes with warnings, so not 2030 either.
It puts it in the same category as triple DES.