From 88f0f9fcbe09f16bd25b5f4f2ec9c0c41c4f8216 Mon Sep 17 00:00:00 2001
From: Pavel Korotkov <pkorotkov@gmail.com>
Date: Tue, 7 Jul 2020 10:08:58 +0300
Subject: [PATCH] Add a stub for auth scheme

---
 neofs/auth.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 neofs/auth.go

diff --git a/neofs/auth.go b/neofs/auth.go
new file mode 100644
index 00000000..bd9f388e
--- /dev/null
+++ b/neofs/auth.go
@@ -0,0 +1,23 @@
+package neofs
+
+import (
+	br "github.com/google/brotli/go/cbrotli"
+	"github.com/nspcc-dev/neofs-api-go/service"
+	"github.com/pkg/errors"
+)
+
+func UnpackBearerToken(packedCredentials []byte) (service.BearerToken, error) {
+	// secretHash := packedCredentials[:32]
+	_ = packedCredentials[:32]
+	compressedKeyID := packedCredentials[32:]
+	keyID, err := br.Decode(compressedKeyID)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to decompress key ID")
+	}
+	bearerToken := new(service.BearerTokenMsg)
+	if err = bearerToken.Unmarshal(keyID); err != nil {
+		return nil, errors.Wrap(err, "failed to unmarshal embedded bearer token")
+	}
+	// TODO
+	return bearerToken, nil
+}