Vac RFC roadmap update

Signed-off-by: ksr <kaiserd@users.noreply.github.com>

content/vac/rfc/index.md

@@ -23,3 +23,8 @@ lastmod: 2023-09-06
 * [[vac/rfc/rfc/nomos/inter-chain-protocol-specification|inter-chain-protocol-specification ]]
 * [[vac/rfc/rfc/nomos/multi-leader-and-multi-overlay-carnot-specification|multi-leader-and-multi-overlay-carnot-specification ]]
 
+### `rfc:waku:`
+
+* [[vac/rfc/rfc/waku/waku-keystore|waku-keystore]]
+
+

content/vac/rfc/rfc/waku/waku-keystore.md

@@ -0,0 +1,54 @@
+---
+title: "Waku Keystore"
+description: "Waku Keystore"
+---
+## `vac:rfc:rfc:waku:waku-keystore`
+---
+
+```mermaid
+%%{ 
+  init: { 
+    'theme': 'base', 
+    'themeVariables': { 
+      'primaryColor': '#BB2528', 
+      'primaryTextColor': '#fff', 
+      'primaryBorderColor': '#7C0000', 
+      'lineColor': '#F8B229', 
+      'secondaryColor': '#006100', 
+      'tertiaryColor': '#fff' 
+    } 
+  } 
+}%%
+gantt
+  tickInterval 1month
+  dateFormat YYYY-MM-DD 
+  section Status
+    Waku Keystore RFC:  2023-11-01, 2023-11-31
+```
+
+- status: 0%
+- CC: Jimmy
+
+### Description
+
+Waku keystore offers a secure way to store RLN credentials,
+which consist of the user's `identityCredential`,
+the `identityIndex` (the index of their commitment in the tree),
+and the `membershipContract` (the contract to which this credential is registered).
+We follow EIP-2335 closely, with some changes that are more evident from the code.
+
+* nwaku implementation of keystore - https://github.com/waku-org/nwaku/tree/master/waku/waku_keystore
+* go-waku implementation of keystore - https://github.com/waku-org/go-waku/blob/master/waku/v2/protocol/rln/keystore/keystore.go
+* js-waku implementation of keystore - https://github.com/waku-org/js-rln/tree/master/src/keystore
+* Sample keystore - https://github.com/waku-org/js-rln/blob/891ee3474aa97e8fe5ac1b35b7ed7387f395a537/src/keystore/keystore.spec.ts#L16-L95
+
+The RFC should describe the credential encryption format, the supported kdf's, as well as a sample keystore.
+
+### Justification
+
+
+### Deliverables
+
+* RFC
+
+