#OPENSSH ORG SERIES#

Incorporate AES-NI into the AES-CTR cipher: The AES-NI instruction set is a set of on die instructions that use hardware acceleration to increase the performance of common AES functions. This is available as of HPNSSH 15v4 for OpenSSH 8.7. If they do not match then the entire file will be transferred. If these match then HPN-SSH will append the missing information to the partial file. We expect to do this by computing a hash of the partial file and compare it to a corresponding byte range of the original file. HPN-SSH is proposing to develop a mechanism to reliably resume failed transfers. Currently ssh does not have a mechanism to allow for failed transfers to restart from the point of failure. The six initial proposed areas of work are:Īutomatically resume failed transfers: There is nothing quite as frustrating as having scp or sftp fail in the middle of a large transfer. Depending on community input this list may change to develop advances of highest interest. This is not meant to be an exhaustive list but is more of a starting point for our deliverables. We’ve identified six different areas where we would like to focus our efforts.

The goal of this grant (NSF Award#: 2004012) is to provide HPN-SSH with the level of performance required in modern high performance computing. This grant will provide direct support to developers at PSC for two years. The developers of HPN-SSH at the Pittsburgh Supercomputing Center (PSC) have recently received a grant from the National Science Foundation to develop and incorporate new features and optimizations. More information can be found on HPN-SSH page on the PSC website. Later advances include disabling encryption after authentication to transport non-sensitive bulk data, modifying the AES-CTR cipher to use multiple CPU cores, more detailed connection logging, and peak throughput values in the scp progress bar. By taking advantage of automatically optimized receive buffers HPN-SSH could improve performance dramatically on these paths. It was originally developed to address performance issues when using ssh on high speed long distance networks (also known as Long Fat Networks: LFNs).

#OPENSSH ORG SERIES#

HPN-SSH is a series of modifications to OpenSSH, the predominant implementation of the ssh protocol.

Openssh org