High performance SSH/SCP



HPN-SSH is a research project based at the Pittsburgh Supercomputing Center

Support HPN-SSH

(PI) Chris Rapier PSC, Michael Stevens CMU, Benjamin Bennett PSC, Mike Tasota PSC/CMU, Mitch Dorrell PSC
email: hpn-ssh@psc.edu

Make a donation

If you benefit from HPN-SSH, please show your support. An important way to show support is by making a donation to the Pittsburgh Supercomputing Center. I do not personally receive any money from these donations but your support ends up supporting our work.  Any amount is worth while – even a dollar will show PSC and CMU your support for our work. Seriously, show your support in order to both keep HPN-SSH current and fund new improvements.

To support HPN-SSH, go to the PSC giving page at https://www.psc.edu/giving/ and click the “Give online” button.  In the next window, choose “Add a designation” and note that it is to support HPN-SSH. Thank you!


Let us know that you are using it

It's important to track the adoption of HPN-SSH by the community to gather suggestions and for future funding opportunities.  Email us at hpn-ssh@psc.edu and let us know that you are using it.


Join the mailing list

Stay on top of developments in HPN-SSH by joining the hpnssh-community mailing list, a group for both developers and users to discuss HPN-SSH. This includes development goals, suggestions, user support, bugs, and more as they relate the HPN-SSH in particular.

Notes and News

HPN-SSH 18.1.0 Released

We are pleased to announce that HPN-SSH 18.1.0 has been released and is now available on https://github.com/rapier1/hpn-ssh. This version introduces a parallel ChaCha20-Poly1305 cipher that is 59% faster than OpenSSH 9.4. Packages for Ubuntu and Fedora will be...

Binary Packages Released for 17v11

Binary packages for Debian and Fedora are now available. Commands to add these package sources are:For Debian: sudo add-apt-repository ppa:rapier1/hpnsshFor Fedora: sudo dnf copr enable rapier1/hpnssh

HPN-SSH 17v11 Released

We are pleased to announce that HPN-SSH 17v11 has been released and is now available on https://github.com/rapier1/openssh-portable. This version brings HPN-SSH up to parity with OpenSSH 9.2 and resolves a number of minor bugs. Patches and binary packages will be...

HPN17v0 Released

We are pleased to announce HPN17v0. This version brings us up to date with OpenSSH 8.9. HPN17 also brings a big change to how we are naming things. From now all executables will have an "hpn" prefix attached to them. So "ssh" is now "hpnssh" and "scp" becomes...

Patch sets on SourceForge

All patch sets from 4.4p1 to 8.1p1 are now available on SourceForge at https://sourceforge.net/projects/hpnssh/. The entire codebase (merged with OpenSSH) is also available as a git repo from https://github.com/rapier1/openssh-portable. The SourceForge location now...


We are proud to announce that the HPN-SSH development team has received a grant from the National Science Foundation (Award#: 2004012) to continue development on HPN-SSH. This grant will be used to develop and incorporate new features and optimizations. This grant...

This work was made possible in part by grants from Cisco Systems, Inc., the National Science Foundation, and the National Library of Medicine.