trezor: add skeleton for Trezor support

readpassword.Trezor() is not implemented yet and returns
a hardcoded dummy key.

1 files changed, 26 insertions, 0 deletions

diff --git a/internal/readpassword/trezor.go b/internal/readpassword/trezor.go
new file mode 100644
index 0000000..37dde79
--- /dev/null
+++ b/internal/readpassword/trezor.go
@@ -0,0 +1,26 @@
+package readpassword
+
+import (
+	"os"
+
+	"github.com/rfjakob/gocryptfs/internal/exitcodes"
+	"github.com/rfjakob/gocryptfs/internal/tlog"
+)
+
+// Trezor reads 16 deterministically derived bytes from a
+// SatoshiLabs Trezor USB security module.
+// The bytes are pseudorandom binary data and may contain null bytes.
+// This function either succeeds and returns 16 bytes or calls os.Exit to end
+// the application.
+func Trezor() []byte {
+	var err error
+	// TODO try to read bytes here....
+	// Handle errors
+	if err != nil {
+		tlog.Fatal.Printf("xxx some error was encountered...")
+		os.Exit(exitcodes.TrezorError)
+	}
+
+	tlog.Warn.Println("XXX readpassword.Trezor(): not implemented yet - returning hardcoded dummy bytes XXX")
+	return []byte("1234567890123456")
+}