func doKeyInfo() {
b, err := ioutil.ReadFile(*kiFilename)
log.Fatale(err, "cannot read keyfile")
var sk [64]byte
isPrivate, err := spki.LoadKeyFile(bytes.NewReader(b), &sk)
log.Fatale(err, "cannot decode keyfile")
if isPrivate {
fmt.Fprintf(os.Stderr, ";; Ed25519 Private Key\n")
} else {
fmt.Fprintf(os.Stderr, ";; Ed25519 Public Key\n")
}
fmt.Fprintf(os.Stderr, ";; Fingerprint: %v\n", hexFormat(sk[32:64]))
fmt.Fprintf(os.Stderr, ";; Fingerprint (b32): %v\n", spki.EncodeB32(sk[32:64]))
fmt.Fprintf(os.Stderr, "%s", prefix(randomart.Generate(sk[32:64], " Ed25519").String()))
var cpk [32]byte
var edpub [32]byte
copy(edpub[:], sk[32:64])
if !extra25519.PublicKeyToCurve25519(&cpk, &edpub) {
log.Fatal("Cannot derive Curve25519 public key.")
}
fmt.Fprintf(os.Stderr, ";; Curve25519 Fingerprint: %v\n", hexFormat(cpk[:]))
fmt.Fprintf(os.Stderr, ";; Curve25519 Fingerprint (b32): %v\n", spki.EncodeB32(cpk[:]))
}
func TestB32(t *testing.T) {
const c = "rtum6hh5iddpaytvcqq4akx6dem4p66tb4dcrp4avssymxmkkvka"
b, err := spki.DecodeB32(c)
if err != nil {
t.Fatalf("error: %v", err)
}
s := spki.EncodeB32(b)
if s != c {
t.Fatalf("mismatch")
}
}