UI HMAC Never Base64 encoded

[BHanq]

Describe the bug
Vault UI HMAC feature in ui/vault/secrets/transit/actions/?action=hmac is bugged and consider the input as “not base64 encoded”. Even if the base 64 checkbox is ticked.

To Reproduce
Steps to reproduce the behavior:

1. Run vault server -dev
2. Run vault secrets enable transit
3. Run vault write -f transit/keys/my-key
4. Go on http://127.0.0.1:8200/ui/vault/secrets/transit/actions/my-key?action=hmac
5. Put the same input while ticking the checkbox
6. Repeat the same input but without ticking it
7. See that the output is the same...

Expected behavior
Outputs shouldn't be identical since a base64 should occurs in one case and not in the other

Environment:

• Vault Server Version:
  

• Vault CLI Version : 1.11.2

• Server Operating System/Architecture: Ubuntu on WSL

Vault server configuration file(s):
None (Vault Dev Server)

Additional context
Image, without ticking the checkbox

Image, while ticking the checkbox

[Monkeychip]

Thank you @BHanq for reporting this issue. I just posted a PR for a fix that will backport the fix as far back as 1.11.