프론트엔드에서의 암호 키 관련된 변수 이름 리팩토링

src/lib/hooks/gotoStateful.ts

@@ -4,14 +4,12 @@ type Path = "/key/export";
 
 interface KeyExportState {
   redirectPath: string;
-  encKeyPair: {
-    pubKeyBase64: string;
-    privKeyBase64: string;
-  };
-  sigKeyPair: {
-    pubKeyBase64: string;
-    privKeyBase64: string;
-  };
+
+  encryptKeyBase64: string;
+  decryptKeyBase64: string;
+  signKeyBase64: string;
+  verifyKeyBase64: string;
+
   mekDraft: ArrayBuffer;
 }
 

src/lib/indexedDB.ts

@@ -12,7 +12,7 @@ const keyStore = new Dexie("keyStore") as Dexie & {
 };
 
 keyStore.version(1).stores({
-  rsaKey: "usage, key",
+  rsaKey: "usage",
 });
 
 export const getRSAKey = async (usage: RSAKeyUsage) => {
@@ -21,11 +21,23 @@ export const getRSAKey = async (usage: RSAKeyUsage) => {
 };
 
 export const storeRSAKey = async (key: CryptoKey, usage: RSAKeyUsage) => {
-  if ((usage === "encrypt" || usage === "verify") && !key.extractable) {
-    throw new Error("Public key must be extractable");
-  } else if ((usage === "decrypt" || usage === "sign") && key.extractable) {
-    throw new Error("Private key must be non-extractable");
+  switch (usage) {
+    case "encrypt":
+    case "verify":
+      if (key.type !== "public") {
+        throw new Error("Public key required");
+      } else if (!key.extractable) {
+        throw new Error("Public key must be extractable");
+      }
+      break;
+    case "decrypt":
+    case "sign":
+      if (key.type !== "private") {
+        throw new Error("Private key required");
+      } else if (key.extractable) {
+        throw new Error("Private key must be non-extractable");
+      }
+      break;
   }
-
   await keyStore.rsaKey.put({ usage, key });
 };

src/lib/services/auth.ts

@@ -6,10 +6,10 @@ import {
 } from "$lib/modules/crypto";
 
 export const requestTokenUpgrade = async (
-  encPubKeyBase64: string,
-  encPrivKey: CryptoKey,
-  sigPubKeyBase64: string,
-  sigPrivKey: CryptoKey,
+  encryptKeyBase64: string,
+  decryptKey: CryptoKey,
+  verifyKeyBase64: string,
+  signKey: CryptoKey,
 ) => {
   let res = await fetch("/api/auth/upgradeToken", {
     method: "POST",
@@ -17,15 +17,15 @@ export const requestTokenUpgrade = async (
       "Content-Type": "application/json",
     },
     body: JSON.stringify({
-      encPubKey: encPubKeyBase64,
-      sigPubKey: sigPubKeyBase64,
+      encPubKey: encryptKeyBase64,
+      sigPubKey: verifyKeyBase64,
     }),
   });
   if (!res.ok) return false;
 
   const { challenge } = await res.json();
-  const answer = await decryptRSACiphertext(decodeFromBase64(challenge), encPrivKey);
-  const sigAnswer = await signRSAMessage(answer, sigPrivKey);
+  const answer = await decryptRSACiphertext(decodeFromBase64(challenge), decryptKey);
+  const sigAnswer = await signRSAMessage(answer, signKey);
 
   res = await fetch("/api/auth/upgradeToken/verify", {
     method: "POST",

src/lib/services/key.ts

@@ -7,10 +7,10 @@ import {
 } from "$lib/modules/crypto";
 
 export const requestClientRegistration = async (
-  encPubKeyBase64: string,
-  encPrivKey: CryptoKey,
-  sigPubKeyBase64: string,
-  sigPrivKey: CryptoKey,
+  encryptKeyBase64: string,
+  decryptKey: CryptoKey,
+  verifyKeyBase64: string,
+  signKey: CryptoKey,
 ) => {
   let res = await callAPI("/api/client/register", {
     method: "POST",
@@ -18,15 +18,15 @@ export const requestClientRegistration = async (
       "Content-Type": "application/json",
     },
     body: JSON.stringify({
-      encPubKey: encPubKeyBase64,
-      sigPubKey: sigPubKeyBase64,
+      encPubKey: encryptKeyBase64,
+      sigPubKey: verifyKeyBase64,
     }),
   });
   if (!res.ok) return false;
 
   const { challenge } = await res.json();
-  const answer = await decryptRSACiphertext(decodeFromBase64(challenge), encPrivKey);
-  const sigAnswer = await signRSAMessage(answer, sigPrivKey);
+  const answer = await decryptRSACiphertext(decodeFromBase64(challenge), decryptKey);
+  const sigAnswer = await signRSAMessage(answer, signKey);
 
   res = await callAPI("/api/client/verify", {
     method: "POST",

src/lib/stores/key.ts

@@ -1,9 +1,11 @@
 import { writable } from "svelte/store";
 
-interface KeyPairs {
-  encKeyPair: CryptoKeyPair;
-  sigKeyPair: CryptoKeyPair;
+export interface ClientKeys {
+  encryptKey: CryptoKey;
+  decryptKey: CryptoKey;
+  signKey: CryptoKey;
+  verifyKey: CryptoKey;
 }
 
-export const keyPairsStore = writable<KeyPairs | null>(null);
+export const clientKeyStore = writable<ClientKeys | null>(null);
 export const mekStore = writable<Map<number, CryptoKey>>(new Map());

src/routes/(fullscreen)/auth/login/+page.svelte

@@ -5,7 +5,7 @@
   import { TitleDiv, BottomDiv } from "$lib/components/divs";
   import { TextInput } from "$lib/components/inputs";
   import { refreshToken } from "$lib/hooks/callAPI";
-  import { keyPairsStore } from "$lib/stores";
+  import { clientKeyStore } from "$lib/stores";
   import { requestLogin, requestTokenUpgrade } from "./service";
 
   let { data } = $props();
@@ -19,14 +19,11 @@
     try {
       if (!(await requestLogin(email, password))) throw new Error("Failed to login");
 
-      if (
-        $keyPairsStore &&
-        !(await requestTokenUpgrade($keyPairsStore.encKeyPair, $keyPairsStore.sigKeyPair))
-      )
+      if ($clientKeyStore && !(await requestTokenUpgrade($clientKeyStore)))
         throw new Error("Failed to upgrade token");
 
       await goto(
-        $keyPairsStore
+        $clientKeyStore
           ? data.redirectPath
           : "/key/generate?redirect=" + encodeURIComponent(data.redirectPath),
       );

src/routes/(fullscreen)/auth/login/service.ts

@@ -1,6 +1,7 @@
 import { exportRSAKeyToBase64 } from "$lib/modules/crypto";
 import { requestTokenUpgrade as requestTokenUpgradeInternal } from "$lib/services/auth";
 import { requestClientRegistration } from "$lib/services/key";
+import type { ClientKeys } from "$lib/stores";
 
 export const requestLogin = async (email: string, password: string) => {
   const res = await fetch("/api/auth/login", {
@@ -13,33 +14,24 @@ export const requestLogin = async (email: string, password: string) => {
   return res.ok;
 };
 
-export const requestTokenUpgrade = async (encKeyPair: CryptoKeyPair, sigKeyPair: CryptoKeyPair) => {
-  const encPubKeyBase64 = await exportRSAKeyToBase64(encKeyPair.publicKey, "public");
-  const sigPubKeyBase64 = await exportRSAKeyToBase64(sigKeyPair.publicKey, "public");
-  if (
-    await requestTokenUpgradeInternal(
-      encPubKeyBase64,
-      encKeyPair.privateKey,
-      sigPubKeyBase64,
-      sigKeyPair.privateKey,
-    )
-  ) {
+export const requestTokenUpgrade = async ({
+  encryptKey,
+  decryptKey,
+  signKey,
+  verifyKey,
+}: ClientKeys) => {
+  const encryptKeyBase64 = await exportRSAKeyToBase64(encryptKey, "public");
+  const verifyKeyBase64 = await exportRSAKeyToBase64(verifyKey, "public");
+  if (await requestTokenUpgradeInternal(encryptKeyBase64, decryptKey, verifyKeyBase64, signKey)) {
     return true;
   }
 
-  if (
-    await requestClientRegistration(
-      encPubKeyBase64,
-      encKeyPair.privateKey,
-      sigPubKeyBase64,
-      sigKeyPair.privateKey,
-    )
-  ) {
+  if (await requestClientRegistration(encryptKeyBase64, decryptKey, verifyKeyBase64, signKey)) {
     return await requestTokenUpgradeInternal(
-      encPubKeyBase64,
-      encKeyPair.privateKey,
-      sigPubKeyBase64,
-      sigKeyPair.privateKey,
+      encryptKeyBase64,
+      decryptKey,
+      verifyKeyBase64,
+      signKey,
     );
   } else {
     return false;

src/routes/(fullscreen)/key/export/+page.svelte

@@ -3,13 +3,13 @@
   import { goto } from "$app/navigation";
   import { Button, TextButton } from "$lib/components/buttons";
   import { BottomDiv } from "$lib/components/divs";
-  import { keyPairsStore } from "$lib/stores";
+  import { clientKeyStore } from "$lib/stores";
   import BeforeContinueBottomSheet from "./BeforeContinueBottomSheet.svelte";
   import BeforeContinueModal from "./BeforeContinueModal.svelte";
   import {
-    makeKeyPairsSaveable,
+    exportClientKeys,
     requestClientRegistration,
-    storeKeyPairsPersistently,
+    storeClientKeys,
     requestTokenUpgrade,
     requestInitialMekRegistration,
   } from "./service";
@@ -22,9 +22,16 @@
   let isBeforeContinueBottomSheetOpen = $state(false);
 
   const exportKeyPair = () => {
-    const keyPairsSaveable = makeKeyPairsSaveable(data.encKeyPair, data.sigKeyPair);
-    const keyPairsBlob = new Blob([JSON.stringify(keyPairsSaveable)], { type: "application/json" });
-    saveAs(keyPairsBlob, "arkvalut-key.json");
+    const clientKeysExported = exportClientKeys(
+      data.encryptKeyBase64,
+      data.decryptKeyBase64,
+      data.verifyKeyBase64,
+      data.signKeyBase64,
+    );
+    const clientKeysBlob = new Blob([JSON.stringify(clientKeysExported)], {
+      type: "application/json",
+    });
+    saveAs(clientKeysBlob, "arkvalut-clientkey.json");
 
     if (!isBeforeContinueBottomSheetOpen) {
       setTimeout(() => {
@@ -34,7 +41,7 @@
   };
 
   const registerPubKey = async () => {
-    if (!$keyPairsStore) {
+    if (!$clientKeyStore) {
       throw new Error("Failed to find key pair");
     }
 
@@ -44,29 +51,27 @@
     try {
       if (
         !(await requestClientRegistration(
-          data.encKeyPair.pubKeyBase64,
-          $keyPairsStore.encKeyPair.privateKey,
-          data.sigKeyPair.pubKeyBase64,
-          $keyPairsStore.sigKeyPair.privateKey,
+          data.encryptKeyBase64,
+          $clientKeyStore.decryptKey,
+          data.verifyKeyBase64,
+          $clientKeyStore.signKey,
         ))
       )
-        throw new Error("Failed to register public key");
+        throw new Error("Failed to register client");
 
-      await storeKeyPairsPersistently($keyPairsStore.encKeyPair, $keyPairsStore.sigKeyPair);
+      await storeClientKeys($clientKeyStore);
 
       if (
         !(await requestTokenUpgrade(
-          data.encKeyPair.pubKeyBase64,
-          $keyPairsStore.encKeyPair.privateKey,
-          data.sigKeyPair.pubKeyBase64,
-          $keyPairsStore.sigKeyPair.privateKey,
+          data.encryptKeyBase64,
+          $clientKeyStore.decryptKey,
+          data.verifyKeyBase64,
+          $clientKeyStore.signKey,
         ))
       )
         throw new Error("Failed to upgrade token");
 
-      if (
-        !(await requestInitialMekRegistration(data.mekDraft, $keyPairsStore.encKeyPair.publicKey))
-      )
+      if (!(await requestInitialMekRegistration(data.mekDraft, $clientKeyStore.encryptKey)))
         throw new Error("Failed to register initial MEK");
 
       await goto(data.redirectPath);

src/routes/(fullscreen)/key/export/service.ts

@@ -1,6 +1,7 @@
 import { callAPI } from "$lib/hooks";
 import { storeRSAKey } from "$lib/indexedDB";
 import { encodeToBase64, encryptRSAPlaintext } from "$lib/modules/crypto";
+import type { ClientKeys } from "$lib/stores";
 
 export { requestTokenUpgrade } from "$lib/services/auth";
 export { requestClientRegistration } from "$lib/services/key";
@@ -10,44 +11,41 @@ type ExportedKeyPairs = {
   exportedAt: Date;
 } & {
   version: 1;
-  encKeyPair: { pubKey: string; privKey: string };
-  sigKeyPair: { pubKey: string; privKey: string };
+  encryptKey: string;
+  decryptKey: string;
+  verifyKey: string;
+  signKey: string;
 };
 
-export const makeKeyPairsSaveable = (
-  encKeyPair: { pubKeyBase64: string; privKeyBase64: string },
-  sigKeyPair: { pubKeyBase64: string; privKeyBase64: string },
+export const exportClientKeys = (
+  encryptKeyBase64: string,
+  decryptKeyBase64: string,
+  verifyKeyBase64: string,
+  signKeyBase64: string,
 ) => {
   return {
     version: 1,
     generator: "ArkVault",
     exportedAt: new Date(),
-    encKeyPair: {
-      pubKey: encKeyPair.pubKeyBase64,
-      privKey: encKeyPair.privKeyBase64,
-    },
-    sigKeyPair: {
-      pubKey: sigKeyPair.pubKeyBase64,
-      privKey: sigKeyPair.privKeyBase64,
-    },
+    encryptKey: encryptKeyBase64,
+    decryptKey: decryptKeyBase64,
+    verifyKey: verifyKeyBase64,
+    signKey: signKeyBase64,
   } satisfies ExportedKeyPairs;
 };
 
-export const storeKeyPairsPersistently = async (
-  encKeyPair: CryptoKeyPair,
-  sigKeyPair: CryptoKeyPair,
-) => {
-  await storeRSAKey(encKeyPair.publicKey, "encrypt");
-  await storeRSAKey(encKeyPair.privateKey, "decrypt");
-  await storeRSAKey(sigKeyPair.publicKey, "verify");
-  await storeRSAKey(sigKeyPair.privateKey, "sign");
+export const storeClientKeys = async (clientKeys: ClientKeys) => {
+  await storeRSAKey(clientKeys.encryptKey, "encrypt");
+  await storeRSAKey(clientKeys.decryptKey, "decrypt");
+  await storeRSAKey(clientKeys.signKey, "sign");
+  await storeRSAKey(clientKeys.verifyKey, "verify");
 };
 
 export const requestInitialMekRegistration = async (
   mekDraft: ArrayBuffer,
-  publicKey: CryptoKey,
+  encryptKey: CryptoKey,
 ) => {
-  const mekDraftEncrypted = await encryptRSAPlaintext(mekDraft, publicKey);
+  const mekDraftEncrypted = await encryptRSAPlaintext(mekDraft, encryptKey);
   const res = await callAPI("/api/mek/register/initial", {
     method: "POST",
     headers: {

src/routes/(fullscreen)/key/generate/+page.svelte

@@ -3,9 +3,9 @@
   import { Button, TextButton } from "$lib/components/buttons";
   import { TitleDiv, BottomDiv } from "$lib/components/divs";
   import { gotoStateful } from "$lib/hooks";
-  import { keyPairsStore } from "$lib/stores";
+  import { clientKeyStore } from "$lib/stores";
   import Order from "./Order.svelte";
-  import { generateKeyPairs, generateMekDraft } from "./service";
+  import { generateClientKeys, generateMekDraft } from "./service";
 
   import IconKey from "~icons/material-symbols/key";
 
@@ -34,19 +34,18 @@
   const generate = async () => {
     // TODO: Loading indicator
 
-    const { encKeyPair, sigKeyPair } = await generateKeyPairs();
+    const clientKeys = await generateClientKeys();
     const { mekDraft } = await generateMekDraft();
 
     await gotoStateful("/key/export", {
+      ...clientKeys,
       redirectPath: data.redirectPath,
-      encKeyPair,
-      sigKeyPair,
       mekDraft,
     });
   };
 
   $effect(() => {
-    if ($keyPairsStore) {
+    if ($clientKeyStore) {
       goto(data.redirectPath);
     }
   });

src/routes/(fullscreen)/key/generate/service.ts

@@ -8,32 +8,24 @@ import {
   makeAESKeyNonextractable,
   exportAESKey,
 } from "$lib/modules/crypto";
-import { keyPairsStore, mekStore } from "$lib/stores";
+import { clientKeyStore, mekStore } from "$lib/stores";
 
-export const generateKeyPairs = async () => {
+export const generateClientKeys = async () => {
   const encKeyPair = await generateRSAEncKeyPair();
   const sigKeyPair = await generateRSASigKeyPair();
 
-  keyPairsStore.set({
-    encKeyPair: {
-      publicKey: encKeyPair.publicKey,
-      privateKey: await makeRSAEncKeyNonextractable(encKeyPair.privateKey, "private"),
-    },
-    sigKeyPair: {
-      publicKey: sigKeyPair.publicKey,
-      privateKey: await makeRSASigKeyNonextractable(sigKeyPair.privateKey, "private"),
-    },
+  clientKeyStore.set({
+    encryptKey: encKeyPair.publicKey,
+    decryptKey: await makeRSAEncKeyNonextractable(encKeyPair.privateKey, "private"),
+    signKey: await makeRSASigKeyNonextractable(sigKeyPair.privateKey, "private"),
+    verifyKey: sigKeyPair.publicKey,
   });
 
   return {
-    encKeyPair: {
-      pubKeyBase64: await exportRSAKeyToBase64(encKeyPair.publicKey, "public"),
-      privKeyBase64: await exportRSAKeyToBase64(encKeyPair.privateKey, "private"),
-    },
-    sigKeyPair: {
-      pubKeyBase64: await exportRSAKeyToBase64(sigKeyPair.publicKey, "public"),
-      privKeyBase64: await exportRSAKeyToBase64(sigKeyPair.privateKey, "private"),
-    },
+    encryptKeyBase64: await exportRSAKeyToBase64(encKeyPair.publicKey, "public"),
+    decryptKeyBase64: await exportRSAKeyToBase64(encKeyPair.privateKey, "private"),
+    signKeyBase64: await exportRSAKeyToBase64(sigKeyPair.privateKey, "private"),
+    verifyKeyBase64: await exportRSAKeyToBase64(sigKeyPair.publicKey, "public"),
   };
 };
 
@@ -42,7 +34,7 @@ export const generateMekDraft = async () => {
   const mekSecured = await makeAESKeyNonextractable(mek);
 
   mekStore.update((meks) => {
-    meks.set(meks.size, mekSecured);
+    meks.set(0, mekSecured);
     return meks;
   });
 

src/routes/+layout.svelte

@@ -2,12 +2,12 @@
   import { onMount } from "svelte";
   import { goto } from "$app/navigation";
   import "../app.css";
-  import { prepareKeyPairStores } from "./services";
+  import { prepareClientKeyStore } from "./services";
 
   let { children } = $props();
 
   onMount(() => {
-    prepareKeyPairStores().then(async (ok) => {
+    prepareClientKeyStore().then(async (ok) => {
       if (!ok && !["/auth", "/key"].some((path) => location.pathname.startsWith(path))) {
         await goto(
           "/key/generate?redirect=" + encodeURIComponent(location.pathname + location.search),

src/routes/services.ts

@@ -1,16 +1,13 @@
 import { getRSAKey } from "$lib/indexedDB";
-import { keyPairsStore } from "$lib/stores";
+import { clientKeyStore } from "$lib/stores";
 
-export const prepareKeyPairStores = async () => {
-  const encPubKey = await getRSAKey("encrypt");
-  const encPrivKey = await getRSAKey("decrypt");
-  const sigPubKey = await getRSAKey("verify");
-  const sigPrivKey = await getRSAKey("sign");
-  if (encPubKey && encPrivKey && sigPubKey && sigPrivKey) {
-    keyPairsStore.set({
-      encKeyPair: { publicKey: encPubKey, privateKey: encPrivKey },
-      sigKeyPair: { publicKey: sigPubKey, privateKey: sigPrivKey },
-    });
+export const prepareClientKeyStore = async () => {
+  const encryptKey = await getRSAKey("encrypt");
+  const decryptKey = await getRSAKey("decrypt");
+  const signKey = await getRSAKey("sign");
+  const verifyKey = await getRSAKey("verify");
+  if (encryptKey && decryptKey && signKey && verifyKey) {
+    clientKeyStore.set({ encryptKey, decryptKey, signKey, verifyKey });
     return true;
   } else {
     return false;