(feat#3745): support ed25519 author signature validation on gov actions

Author: Ciabas

CHANGELOG.md

@@ -14,6 +14,7 @@ changes.
 
 - Preserve maintenance ending banner state on the wallet connection change [Issue 3681](https://github.com/IntersectMBO/govtool/issues/3681)
 - Add authors for Live Voting Governance Actions [Issue 3745](https://github.com/IntersectMBO/govtool/issues/3745)
+- Add support for ed25519 author signature validation on gov actions [Issue 3745](https://github.com/IntersectMBO/govtool/issues/3745)
 
 ### Fixed
 

govtool/backend/sql/list-proposals.sql

@@ -304,6 +304,7 @@ SELECT
     COALESCE(cv.ccAbstainVotes, 0) cc_abstain_votes,
     prev_gov_action.index as prev_gov_action_index,
     encode(prev_gov_action_tx.hash, 'hex') as prev_gov_action_tx_hash,
+    off_chain_vote_data.json as json_content,
     COALESCE(
       json_agg(
         json_build_object(
@@ -367,4 +368,5 @@ GROUP BY
     off_chain_vote_gov_action_data.title,
     off_chain_vote_gov_action_data.abstract,
     off_chain_vote_gov_action_data.motivation,
-    off_chain_vote_gov_action_data.rationale;
+    off_chain_vote_gov_action_data.rationale,
+    off_chain_vote_data.json;

govtool/backend/src/VVA/API.hs

@@ -245,6 +245,7 @@ proposalToResponse timeZone Types.Proposal {..} =
     proposalResponseCcAbstainVotes = proposalCcAbstainVotes,
     proposalResponsePrevGovActionIndex = proposalPrevGovActionIndex,
     proposalResponsePrevGovActionTxHash = HexText <$> proposalPrevGovActionTxHash,
+    proposalResponseBody = proposalBody,
     proposalResponseAuthors = ProposalAuthors <$> proposalAuthors
   }
 

govtool/backend/src/VVA/API/Types.hs

@@ -401,6 +401,7 @@ data ProposalResponse
       , proposalResponseCcAbstainVotes      :: Integer
       , proposalResponsePrevGovActionIndex  :: Maybe Integer
       , proposalResponsePrevGovActionTxHash :: Maybe HexText
+      , proposalResponseJson                :: Maybe Value
       , proposalResponseAuthors             :: Maybe ProposalAuthors
       }
   deriving (Generic, Show)

govtool/backend/src/VVA/Types.hs

@@ -208,6 +208,7 @@ data Proposal
       , proposalCcAbstainVotes        :: Integer
       , proposalPrevGovActionIndex    :: Maybe Integer
       , proposalPrevGovActionTxHash   :: Maybe Text
+      , proposalJson                  :: Maybe Value
       , proposalAuthors               :: Maybe Value
       }
   deriving (Show)
@@ -242,6 +243,7 @@ instance FromRow Proposal where
       <*> (floor @Scientific <$> field) -- proposalCcAbstainVotes
       <*> field -- prevGovActionIndex
       <*> field -- prevGovActionTxHash
+      <*> field -- proposalJson
       <*> field -- proposalAuthors
 
 data TransactionStatus = TransactionStatus

govtool/frontend/package-lock.json

@@ -32,6 +32,7 @@
     "@intersect.mbo/pdf-ui": "1.0.1-alfa",
     "@mui/icons-material": "^5.14.3",
     "@mui/material": "^5.14.4",
+    "@noble/ed25519": "^2.3.0",
     "@rollup/plugin-babel": "^6.0.4",
     "@rollup/pluginutils": "^5.1.0",
     "@sentry/react": "^7.77.0",

govtool/frontend/package.json

@@ -1,6 +1,8 @@
-import { useMemo, useState, Fragment } from "react";
+import { useMemo, useState, Fragment, useEffect } from "react";
 import { Box, Tabs, Tab, styled, Skeleton } from "@mui/material";
 import { useLocation } from "react-router-dom";
+import CheckCircleIcon from "@mui/icons-material/CheckCircle";
+import CancelIcon from "@mui/icons-material/Cancel";
 
 import { CopyButton, ExternalModalButton, Tooltip, Typography } from "@atoms";
 import {
@@ -23,6 +25,7 @@ import {
   getFullGovActionId,
   mapArrayToObjectByKeys,
   encodeCIP129Identifier,
+  validateSignature,
 } from "@utils";
 import { MetadataValidationStatus, ProposalData } from "@models";
 import { GovernanceActionType } from "@/types/governanceAction";
@@ -77,6 +80,7 @@ export const GovernanceActionDetailsCardData = ({
   proposal: {
     abstract,
     authors,
+    json: jsonContent,
     createdDate,
     createdEpochNo,
     details,
@@ -373,21 +377,35 @@ export const GovernanceActionDetailsCardData = ({
             ? t("govActions.authors.noDataAvailable")
             : (authors ?? []).map((author, idx, arr) => (
               <Fragment key={author.publicKey}>
-                <Tooltip
-                  heading={`${t("govActions.authors.witnessAlgorithm")}: ${
-                      author.witnessAlgorithm
-                    }`}
-                  paragraphOne={`${t("govActions.authors.publicKey")}: ${
-                      author.publicKey
-                    }`}
-                  paragraphTwo={`${t("govActions.authors.signature")}: ${
-                      author.signature
-                    }`}
-                  placement="bottom-end"
-                  arrow
+                <span
+                  style={{
+                      display: "inline-flex",
+                      alignItems: "center",
+                      gap: 2,
+                    }}
                 >
-                  <span>{author.name}</span>
-                </Tooltip>
+                  <AuthorSignatureStatus
+                    signature={author.signature}
+                    publicKey={author.publicKey}
+                    algorithm={author.witnessAlgorithm}
+                    jsonContent={jsonContent}
+                  />
+                  <Tooltip
+                    heading={`${t("govActions.authors.witnessAlgorithm")}: ${
+                        author.witnessAlgorithm
+                      }`}
+                    paragraphOne={`${t("govActions.authors.publicKey")}: ${
+                        author.publicKey
+                      }`}
+                    paragraphTwo={`${t("govActions.authors.signature")}: ${
+                        author.signature
+                      }`}
+                    placement="bottom-end"
+                    arrow
+                  >
+                    <span>{author.name}</span>
+                  </Tooltip>
+                </span>
                 {idx < arr.length - 1 && <span>,&nbsp;</span>}
               </Fragment>
               ))
@@ -498,3 +516,59 @@ const HardforkDetailsTabContent = ({
     </Box>
   );
 };
+
+const AuthorSignatureStatus = ({
+  algorithm,
+  publicKey,
+  signature,
+  jsonContent,
+}: {
+  algorithm?: string;
+  publicKey?: string;
+  signature?: string;
+  jsonContent?: Record<string, unknown>;
+}) => {
+  const { t } = useTranslation();
+  const [isSignatureValid, setIsSignatureValid] = useState<boolean | null>(
+    null,
+  );
+
+  useEffect(() => {
+    let cancelled = false;
+    async function checkSignature() {
+      const args = {
+        jsonContent,
+        algorithm,
+        publicKey,
+        signature,
+      };
+      const result = await validateSignature(args);
+      if (!cancelled) setIsSignatureValid(result);
+    }
+    checkSignature();
+    return () => {
+      cancelled = true;
+    };
+  }, [algorithm, jsonContent, publicKey, signature]);
+
+  if (isSignatureValid === null) {
+    return <Skeleton variant="text" width={16} />;
+  }
+  return (
+    <Tooltip
+      heading={
+        isSignatureValid
+          ? t("govActions.authors.singatureVerified")
+          : t("govActions.authors.signatureNotVerified")
+      }
+      placement="bottom-end"
+      arrow
+    >
+      {isSignatureValid ? (
+        <CheckCircleIcon sx={{ color: "success.main", fontSize: 16 }} />
+      ) : (
+        <CancelIcon sx={{ color: "error.main", fontSize: 16 }} />
+      )}
+    </Tooltip>
+  );
+};

govtool/frontend/src/components/organisms/GovernanceActionDetailsCardData.tsx

@@ -426,7 +426,9 @@
       "title": "Authors",
       "publicKey": "Public Key",
       "signature": "Signature",
-      "witnessAlgorithm": "Witness Algorithm"
+      "witnessAlgorithm": "Witness Algorithm",
+      "singatureVerified": "Author signature is verified",
+      "signatureNotVerified": "Author signature is not verified"
     },
     "backToGovActions": "Back to Governance Actions",
     "castVote": "<0>You voted {{vote}} on this proposal</0>\non {{date}} (Epoch {{epoch}})",

govtool/frontend/src/i18n/locales/en.json

@@ -239,7 +239,9 @@ export type ProposalData = {
     witnessAlgorithm?: string;
     publicKey?: string;
     signature?: string;
+    isSignatureValid?: boolean;
   }[];
+  json?: Record<string, unknown>;
 } & SubmittedVotesData;
 
 export type NewConstitutionAnchor = {