master
tests: add tests for signed hostkey: `ssh-ed25519-cert-v01@openssh.com`
tests: rename CA keys to reflect they are user keys
tests: move test keys into `keys` subdirectory
tests: sync up pubkey comments with generator (tidy-up)
tests: rename keys/tests to contain the key format
tests: add ECDSA PEM format plain and encrypted keys and tests
tests: add PKCS8-formatted plain and encrypted keys and tests