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Re:NIST Post-Quantum Cryptography Round 1 Submissions by modalduality on Wednesday December 27, 2017 @12:11PM (#16016128)
In general forward security involves generating a new key for each conversation with Diffie-Hellman or similar.

According to https://crypto.stackexchange.com/questions/5610/diffie-hellm..., Diffie-Hellman is not post-quantum secure, but https://en.wikipedia.org/wiki/Supersingular_isogeny_key_exch... is a DH alternative that is.

Re:NIST Post-Quantum Cryptography Round 1 Submissions by jgrahamc on Wednesday December 27, 2017 @12:12PM (#16016142)
Which is partly why we wrote and open sourced a SIDH implementation in TLS 1.3: https://blog.cloudflare.com/sidh-go/
Re:NIST Post-Quantum Cryptography Round 1 Submissions by exabrial on Wednesday December 27, 2017 @02:06PM (#16017070)
I <3 cloudflare, you guys are awesome!
Re:NIST Post-Quantum Cryptography Round 1 Submissions by newman314 on Wednesday December 27, 2017 @07:07PM (#16019240)
Do you have any performance numbers for SIDH vs ECDHE?
Re:NIST Post-Quantum Cryptography Round 1 Submissions by grittygrease on Sunday December 31, 2017 @01:09PM (#16041756)
Cloudflare has a Go implementation of SIDH with p751: https://blog.cloudflare.com/sidh-go/

Here’s an overview of the performance from a patch by Armando Faz Hernandez: https://github.com/cloudflare/p751sidh/pull/2