ConnectBot SSH Library/org.connectbot.sshlib.sk/SkPublicKeyEncoder

SkPublicKeyEncoder

Builds OpenSSH SK public-key wire blobs.

The output is the byte sequence that appears in authorized_keys (base64-encoded after the algorithm name) and in the public key blob field of SSH publickey auth requests.

Format per OpenSSH PROTOCOL.u2f §3.1:

sk-ssh-ed25519@openssh.com:
  string  "sk-ssh-ed25519@openssh.com"
  string  rawEd25519PublicKey      (32 bytes)
  string  application              (e.g. "ssh:")

sk-ecdsa-sha2-nistp256@openssh.com:
  string  "sk-ecdsa-sha2-nistp256@openssh.com"
  string  "nistp256"
  string  ecPoint                  (uncompressed SEC1: 0x04 || X(32) || Y(32), 65 bytes)
  string  application

Functions

encode

fun encode(algorithm: SkAlgorithm, rawKey: ByteArray, application: String): ByteArray

Build the SK public-key wire blob.