Pass totp.policy.getAlgorithmKey() to the freemarker template

src/bin/keycloakify/generateFtl/ftl_object_to_js_code_declaring_an_object.ftl

@@ -254,6 +254,17 @@
             <#attempt>
                 return "${url.getLogoutUrl()}";
             <#recover>
+                throw new Error("Failed to invoke url.getLogoutUrl() in the FreeMarker template");
+            </#attempt>
+        };
+    </#if>
+
+    <#if pageId === "login-config-totp.ftl">
+        out["totp"]["policy"]["getAlgorithmKey"] = function () {
+            <#attempt>
+                return "${totp.policy.getAlgorithmKey()}";
+            <#recover>
+                throw new Error("Failed to invoke totp.policy.getAlgorithmKey() in the FreeMarker template");
             </#attempt>
         };
     </#if>

src/login/kcContext/KcContext.ts

@@ -419,6 +419,7 @@ export declare namespace KcContext {
                 algorithm: "HmacSHA1" | "HmacSHA256" | "HmacSHA512";
                 digits: number;
                 lookAheadWindow: number;
+                getAlgorithmKey: () => string;
             } & (
                 | {
                       type: "totp";

src/login/pages/LoginConfigTotp.tsx

@@ -17,14 +17,6 @@ export default function LoginConfigTotp(props: PageProps<Extract<KcContext, { pa
 
     const { msg, msgStr } = i18n;
 
-    // NOTE: We should edit the ftl_object_to_js_code_declaring_an_object.ftl
-    // so that we have access to getAlgorithmKey()
-    const algToKeyUriAlg: Record<(typeof kcContext)["totp"]["policy"]["algorithm"], string> = {
-        "HmacSHA1": "SHA1",
-        "HmacSHA256": "SHA256",
-        "HmacSHA512": "SHA512"
-    };
-
     return (
         <Template {...{ kcContext, i18n, doUseDefaultCss, classes }} headerNode={msg("loginTotpTitle")}>
             <>
@@ -60,7 +52,7 @@ export default function LoginConfigTotp(props: PageProps<Extract<KcContext, { pa
                                             {msg("loginTotpType")}: {msg(`loginTotp.${totp.policy.type}`)}
                                         </li>
                                         <li id="kc-totp-algorithm">
-                                            {msg("loginTotpAlgorithm")}: {algToKeyUriAlg?.[totp.policy.algorithm] ?? totp.policy.algorithm}
+                                            {msg("loginTotpAlgorithm")}: {totp.policy.getAlgorithmKey()}
                                         </li>
                                         <li id="kc-totp-digits">
                                             {msg("loginTotpDigits")}: {totp.policy.digits}