Looking at instructions at https://crosstool-ng.github.io/docs/install/ $ gpg --keyserver http://pgp.surfnet.nl --recv-keys 35B871D1 11D618A4 gpg: no valid OpenPGP data found. gpg: Total number processed: 0 $ Perhaps the mit keyserver ? -- Dennis Clarke RISC-V/SPARC/PPC/ARM/CISC UNIX and Linux spoken GreyBeard and suspenders optional