Thanks for the pointer. I've noticed it produces sensible-looking Epiphany assembly if fed with
http://tweetnacl.cr.yp.to/software.htmlPublication describing it is here
https://cryptojedi.org/papers/tweetnacl-20140917.pdfI've also successfully built
https://github.com/sbp/tweetnacl-tools for ARM. The library is small enough to fit the Epiphany nodes.
While the current cores do not have crypto ISA extensions, I think they would be good crypto accelerators for the power envelope.
Notice that cjdns (which uses cnacl, but tweetnacl should be a drop-in) does build on Parallella for ARM on Paraubuntu if provided with Seccomp_NO=1 ./do.
What is still missing on Paraubuntu is ability to create /dev/net/tun
Apart from that it could be an interesting practical cjdns router, even when not using Zynq FPGA space for switch/crypto implementations.