diff options
| -rw-r--r-- | docs/meshbay-draft-v5.md | 27 | ||||
| -rw-r--r-- | packages/meshbay-hub/src/meshbay_hub/api/webapp.py | 4 | ||||
| -rw-r--r-- | packages/meshbay-hub/src/meshbay_hub/static/app.js | 91 | ||||
| -rw-r--r-- | packages/meshbay-hub/src/meshbay_hub/static/i18n.js | 13 | ||||
| -rw-r--r-- | packages/meshbay-hub/src/meshbay_hub/static/keyderive.js | 112 | ||||
| -rw-r--r-- | packages/meshbay-hub/src/meshbay_hub/static/vendor/PROVENANCE.md | 36 | ||||
| -rw-r--r-- | packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.min.js | 1 | ||||
| -rwxr-xr-x | packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.wasm | bin | 0 -> 25725 bytes | |||
| -rw-r--r-- | packages/meshbay-hub/tests/test_bundle_kdf_parity.py | 131 |
9 files changed, 315 insertions, 100 deletions
diff --git a/docs/meshbay-draft-v5.md b/docs/meshbay-draft-v5.md index b4a9e45..6fdbbc6 100644 --- a/docs/meshbay-draft-v5.md +++ b/docs/meshbay-draft-v5.md @@ -348,10 +348,29 @@ separation, on-the-fly encryption. | Hub password verifier | Argon2id 256 MB over a PBKDF2-derived `auth_key` | | Browser bundle key | PBKDF2-SHA512, 600 000 iterations | -**Known weakness (C4).** Keypair bundles are protected only by PBKDF2 and are pushed to -every node whose group the user joins, while GEK and keypair bundle fetches are served in -the pre-proof window because the client needs its bundle to compute the proof. The window -is bounded (4 fetches) and audited. It closes properly when the native client stops +**Known weakness (C4), reduced 2026-08-14.** Keypair bundles are pushed to every node +whose group the user joins, and GEK and keypair bundle fetches are served in the pre-proof +window because the client needs its bundle to compute the proof. The window is bounded +(4 fetches) and audited. + +The bundle's own protection moved from PBKDF2-SHA512 to **Argon2id, 64 MB, t=3, p=1** +(`static/vendor/argon2.min.js`, WebAssembly, no external host). PBKDF2 is compute-only, +so 600k iterations cost an attacker with a GPU far less than the wall clock suggested: +measured on the dev machine, both take ~0.3 s honestly, but only one of them makes a +graphics card allocate 64 MB per guess. The two implementations — the browser's WASM and +`argon2-cffi` in QE — are held byte-identical by a parity test, because a disagreement +would present as an account nobody can open. + +What that changes, and what it does not. The bundle is what a node operator can take and +attack offline; cracking it yields the user's *identity keys*, and with them content on +**other** nodes and the ability to sign as that user — not the content on the operator's +own node, which they host in the clear by design. Argon2id raises the price of that +attack; it does not remove it, and a weak passphrase still loses. The client refuses +passphrases below 12 characters and ~60 bits, which can only be enforced there: with the +password split (T1) the hub never sees a passphrase. + +Bundles written before the change are still readable, and are re-encrypted the first time +their owner's browser backs them up. It closes properly when the native client stops storing keypair bundles remotely (Phase 13.3) — the material belongs on the user's own device, not on the hub *or* on other people's nodes. diff --git a/packages/meshbay-hub/src/meshbay_hub/api/webapp.py b/packages/meshbay-hub/src/meshbay_hub/api/webapp.py index 5ad7329..f804ec5 100644 --- a/packages/meshbay-hub/src/meshbay_hub/api/webapp.py +++ b/packages/meshbay-hub/src/meshbay_hub/api/webapp.py @@ -47,6 +47,10 @@ _HTML = """\ </head> <body> <div id="app"></div> + <!-- Argon2id (WebAssembly, inlined) — WebCrypto has no memory-hard KDF, and the + keypair bundle needs one: it is protected by the passphrase alone and sits + on every node its owner joins (C4). Vendored, see static/vendor/PROVENANCE.md --> + <script src="/vendor/argon2.min.js"></script> <script src="/keyderive.js"></script> <script src="/crypto.js"></script> <script src="/transport.js"></script> diff --git a/packages/meshbay-hub/src/meshbay_hub/static/app.js b/packages/meshbay-hub/src/meshbay_hub/static/app.js index 94bf09e..300059d 100644 --- a/packages/meshbay-hub/src/meshbay_hub/static/app.js +++ b/packages/meshbay-hub/src/meshbay_hub/static/app.js @@ -144,24 +144,24 @@ function passwordBits(pw) { const PASSWORD_MIN_BITS = 60; // refuse below this const PASSWORD_MIN_LEN = 12; -// Whether this account backs its encrypted keys up to the nodes it joins. -// -// On: any browser recovers the same identity with the password — the ordinary -// multi-device expectation. Off: the keys exist only where they were generated, -// nothing is left on anyone's disk, and losing this browser's storage loses the -// account's content for good. That is a real choice, so it is the user's. -const KEY_BACKUP_PREFIX = 'mb_key_backup_'; - -function keyBackupEnabled(username) { - try { - return localStorage.getItem(KEY_BACKUP_PREFIX + username) !== '0'; - } catch { return true; } -} - -function setKeyBackupEnabled(username, on) { +/** + * Re-encrypt a bundle written under the old KDF before it is stored again. + * + * PBKDF2 bundles are still readable, but leaving one on a node keeps the weak + * protection alive for as long as it sits there. Any backup is an opportunity to + * replace it with the Argon2id form, and it costs nothing the user notices. + */ +async function _upgradedBundle(bundleEnc) { try { - localStorage.setItem(KEY_BACKUP_PREFIX + username, on ? '1' : '0'); - } catch {} + if (!window.MeshBayKeys || !_sessionKeys || !_bundleKey) return bundleEnc; + if (window.MeshBayKeys.bundleVersion(bundleEnc) === 2) return bundleEnc; + const b64 = (s) => Uint8Array.from(atob(s), c => c.charCodeAt(0)); + return await window.MeshBayKeys.encryptBundleWithKey( + b64(_sessionKeys.skEdB64), b64(_sessionKeys.skXB64), _bundleKey.v2); + } catch (e) { + console.warn('[MeshBay] bundle upgrade skipped:', e.message); + return bundleEnc; + } } function _restoreSessionKeys() { @@ -979,26 +979,18 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth }) { } } - // Back the encrypted keys up to the node, or withdraw them — whichever - // this account asked for. The local copy is only dropped once the node - // holds one, so turning backup off never strands anybody. - if (transport.connected) { - if (keyBackupEnabled(username)) { - if (_pendingBundlePush) { - try { - await transport.storeKeypairBundle(_pendingBundlePush); - try { localStorage.removeItem(`meshbay_kp_${username}`); } catch {} - _pendingBundlePush = null; - } catch (e) { - console.warn('[MeshBay] Bundle push to node deferred:', e.message); - } - } - } else { - try { - await transport.deleteKeypairBundle(); - } catch (e) { - console.warn('[MeshBay] Could not withdraw key backup:', e.message); - } + // Back the encrypted keys up to the node. This is what lets any other + // browser recover them with the passphrase, which is the ordinary + // expectation; the protection that matters is the KDF guarding the + // bundle, not withholding the bundle. + if (transport.connected && _pendingBundlePush) { + try { + await transport.storeKeypairBundle( + await _upgradedBundle(_pendingBundlePush)); + try { localStorage.removeItem(`meshbay_kp_${username}`); } catch {} + _pendingBundlePush = null; + } catch (e) { + console.warn('[MeshBay] Bundle push to node deferred:', e.message); } } @@ -2206,15 +2198,6 @@ function SettingsPage({ user, theme, onThemeChange, groups }) { const [nodeKeyLoading, setNodeKeyLoading] = useState(false); const [pinCount, setPinCount] = useState( () => (window.MeshBayTransport?.pinnedNodeCount?.() ?? 0)); - const [backup, setBackup] = useState(() => keyBackupEnabled(user.username)); - - // Takes effect on the next connection to each node: enabling uploads the - // encrypted bundle, disabling withdraws whatever that node already holds. - const toggleBackup = useCallback(() => { - const next = !backup; - setKeyBackupEnabled(user.username, next); - setBackup(next); - }, [backup, user.username]); // 11.5.8: node identity pins are refused strictly on change, so users need a // deliberate way to accept a legitimate rotation (operator reinstalled a node). @@ -2313,22 +2296,6 @@ function SettingsPage({ user, theme, onThemeChange, groups }) { </div> <div class="settings-section"> - <h3 class="settings-heading">${t('settings.key_backup')}</h3> - <p class="settings-hint">${t('settings.key_backup_hint')}</p> - <div class="settings-row"> - <span class="settings-label"> - ${backup ? t('settings.key_backup_on') : t('settings.key_backup_off')} - </span> - <button class="btn-secondary" onClick=${toggleBackup}> - ${backup ? t('settings.key_backup_disable') : t('settings.key_backup_enable')} - </button> - </div> - ${!backup && html` - <p class="error-msg" style="margin-top:8px">${t('settings.key_backup_warning')}</p> - `} - </div> - - <div class="settings-section"> <h3 class="settings-heading">${t('settings.node_pins')}</h3> <p class="settings-hint">${t('settings.node_pins_hint')}</p> <div class="settings-row"> diff --git a/packages/meshbay-hub/src/meshbay_hub/static/i18n.js b/packages/meshbay-hub/src/meshbay_hub/static/i18n.js index 702da0b..f0c5cef 100644 --- a/packages/meshbay-hub/src/meshbay_hub/static/i18n.js +++ b/packages/meshbay-hub/src/meshbay_hub/static/i18n.js @@ -124,19 +124,6 @@ const en = { 'settings.coming_soon': 'Coming soon.', 'settings.profile': 'Profile', 'settings.username': 'Username', - 'settings.key_backup': 'Use this account on other devices', - 'settings.key_backup_hint': 'Your keys can be kept — encrypted with your ' - + 'passphrase — on the nodes whose groups you join, so another browser can ' - + 'recover them. Turn this off and your keys stay only where they were ' - + 'created: nothing of yours sits on anyone else\'s disk, and only that ' - + 'browser can open your groups.', - 'settings.key_backup_on': 'Enabled — other browsers can recover your keys', - 'settings.key_backup_off': 'Disabled — keys stay in this browser only', - 'settings.key_backup_enable': 'Enable', - 'settings.key_backup_disable': 'Disable', - 'settings.key_backup_warning': 'With this off, clearing this browser\'s data ' - + 'loses access to everything encrypted for you. There is no recovery — that ' - + 'is the point. Copies already on nodes are withdrawn at the next connection.', 'settings.node_pins': 'Node identities', 'settings.node_pins_hint': "Each node's identity key is remembered the first time you connect. If it changes, the connection is refused — that is expected only when an operator reinstalls a node. Verify with them before clearing.", 'settings.node_pins_count': '{n} pinned', diff --git a/packages/meshbay-hub/src/meshbay_hub/static/keyderive.js b/packages/meshbay-hub/src/meshbay_hub/static/keyderive.js index 3d9c3c6..afa5d27 100644 --- a/packages/meshbay-hub/src/meshbay_hub/static/keyderive.js +++ b/packages/meshbay-hub/src/meshbay_hub/static/keyderive.js @@ -67,11 +67,34 @@ async function generateKeypairs() { // ── Password → AES key ──────────────────────────────────────────────────────── -/** - * Derive an AES-256 key from password + username using PBKDF2-SHA512. - * Used for encrypting the keypair bundle. - */ -async function deriveEncryptionKey(password, username) { +// Argon2id parameters for the keypair bundle. +// +// This is the one KDF in the browser that guards something an adversary can take +// away and attack at leisure: the bundle is stored on every node whose group its +// owner joins (finding C4). PBKDF2 was the wrong tool — it is compute-only, which +// is exactly what a GPU is good at, so 600k iterations bought far less than the +// wall-clock time suggested. +// +// 64 MB / t=3 / p=1 measured at ~320 ms through this WASM build on a desktop, so +// roughly a second on a modest phone — the most that belongs in a login. Memory +// is what matters here: at 64 MB per guess, a 24 GB card holds a few hundred in +// parallel instead of the effectively unbounded number PBKDF2 allows. +const ARGON2_MEM_KIB = 65536; // 64 MB +const ARGON2_TIME = 3; +const ARGON2_LANES = 1; + +// Bundles written before this carry no marker and are read with the old KDF. +// They are re-encrypted the first time their owner signs in (see upgradeBundle). +const BUNDLE_V2_MAGIC = 'MBK2'; + +function _argon2() { + const a = (typeof window !== 'undefined' && window.argon2) || globalThis.argon2; + if (!a) throw new Error('Argon2 unavailable — vendor/argon2.min.js did not load'); + return a; +} + +/** Legacy: PBKDF2-SHA512. Kept to read bundles written before the change. */ +async function deriveEncryptionKeyV1(password, username) { const enc = new TextEncoder(); const km = await crypto.subtle.importKey( 'raw', enc.encode(password), 'PBKDF2', false, ['deriveKey']); @@ -86,6 +109,27 @@ async function deriveEncryptionKey(password, username) { ); } +/** + * Derive the bundle key with Argon2id. + * + * The salt stays deterministic and domain-separated per user, as before: it is + * what lets the key be derived once at sign-in and kept, instead of holding the + * passphrase in memory to re-derive it whenever a bundle turns up. It is unique + * per account, so it does what a salt is for — no shared precomputation. + */ +async function deriveEncryptionKey(password, username) { + const enc = new TextEncoder(); + const salt = new Uint8Array(await crypto.subtle.digest( + 'SHA-256', enc.encode(`meshbay:bundle:v2:${username}`))).slice(0, 16); + const out = await _argon2().hash({ + pass: password, salt, + time: ARGON2_TIME, mem: ARGON2_MEM_KIB, parallelism: ARGON2_LANES, + hashLen: 32, type: _argon2().ArgonType.Argon2id, + }); + return crypto.subtle.importKey( + 'raw', out.hash, { name: 'AES-GCM' }, false, ['encrypt', 'decrypt']); +} + // ── Bundle encryption ───────────────────────────────────────────────────────── /** @@ -94,29 +138,42 @@ async function deriveEncryptionKey(password, username) { */ async function encryptBundle(skEdRaw, skXRaw, password, username) { const aesKey = await deriveEncryptionKey(password, username); + return encryptBundleWithKey(skEdRaw, skXRaw, aesKey); +} + +/** Same, when the key was already derived at sign-in. Always writes v2. */ +async function encryptBundleWithKey(skEdRaw, skXRaw, aesKey) { const nonce = crypto.getRandomValues(new Uint8Array(12)); const data = new TextEncoder().encode(JSON.stringify({ skEd: btoa(String.fromCharCode(...new Uint8Array(skEdRaw))), skX: btoa(String.fromCharCode(...new Uint8Array(skXRaw))), })); const ct = await crypto.subtle.encrypt({ name: 'AES-GCM', iv: nonce }, aesKey, data); - // Return base64(nonce || ciphertext) - const out = new Uint8Array(nonce.length + ct.byteLength); - out.set(nonce); - out.set(new Uint8Array(ct), nonce.length); + // base64( "MBK2" || nonce || ciphertext ). The marker is what tells a reader + // which KDF produced the key, so old bundles stay readable and new ones are + // never fed to the old derivation. + const magic = new TextEncoder().encode(BUNDLE_V2_MAGIC); + const out = new Uint8Array(magic.length + nonce.length + ct.byteLength); + out.set(magic); + out.set(nonce, magic.length); + out.set(new Uint8Array(ct), magic.length + nonce.length); return btoa(String.fromCharCode(...out)); } +function bundleVersion(bundleB64) { + try { + return atob(bundleB64).startsWith(BUNDLE_V2_MAGIC) ? 2 : 1; + } catch { return 1; } +} + /** * Decrypt a keypair bundle. Throws if password is wrong. */ async function decryptBundle(bundleB64, password, username) { - const aesKey = await deriveEncryptionKey(password, username); - const raw = Uint8Array.from(atob(bundleB64), c => c.charCodeAt(0)); - const nonce = raw.slice(0, 12); - const ct = raw.slice(12); - const plain = await crypto.subtle.decrypt({ name: 'AES-GCM', iv: nonce }, aesKey, ct); - return JSON.parse(new TextDecoder().decode(plain)); + const key = bundleVersion(bundleB64) === 2 + ? await deriveEncryptionKey(password, username) + : await deriveEncryptionKeyV1(password, username); + return decryptBundleWithKey(bundleB64, key); } // ── Registration ────────────────────────────────────────────────────────────── @@ -165,11 +222,19 @@ async function registerUser(username, email, password) { * Decrypt a keypair bundle using a pre-derived AES-256 CryptoKey. * Used when the bundle is fetched from the node (bundleKey was derived at login). */ -async function decryptBundleWithKey(bundleB64, aesKey) { +async function decryptBundleWithKey(bundleB64, aesKeyOrPair) { + const v2 = bundleVersion(bundleB64) === 2; + // Callers derive both keys at sign-in and pass the pair, because which one a + // bundle needs is only known once it has been read — and the passphrase is + // deliberately not kept around to derive the other one later. + const key = (aesKeyOrPair && aesKeyOrPair.v2) + ? (v2 ? aesKeyOrPair.v2 : aesKeyOrPair.v1) + : aesKeyOrPair; const raw = Uint8Array.from(atob(bundleB64), c => c.charCodeAt(0)); - const nonce = raw.slice(0, 12); - const ct = raw.slice(12); - const plain = await crypto.subtle.decrypt({ name: 'AES-GCM', iv: nonce }, aesKey, ct); + const off = v2 ? BUNDLE_V2_MAGIC.length : 0; + const nonce = raw.slice(off, off + 12); + const ct = raw.slice(off + 12); + const plain = await crypto.subtle.decrypt({ name: 'AES-GCM', iv: nonce }, key, ct); return JSON.parse(new TextDecoder().decode(plain)); } @@ -195,7 +260,12 @@ async function loginAndRecover(username, password) { const result = { accessToken: data.access_token, refreshToken: data.refresh_token, - bundleKey: await deriveEncryptionKey(password, username), + // Both, so a bundle written before the KDF changed can still be opened — + // and re-written with the new one on the next backup. + bundleKey: { + v2: await deriveEncryptionKey(password, username), + v1: await deriveEncryptionKeyV1(password, username), + }, }; // localStorage bundle = new registration, not yet pushed to node @@ -263,5 +333,5 @@ async function signBytes(skEdPkcs8B64, message) { window.MeshBayKeys = { registerUser, loginAndRecover, regenerateKeys, generateKeypairs, signBytes, - deriveAuthKey, decryptBundleWithKey, + deriveAuthKey, decryptBundleWithKey, encryptBundleWithKey, bundleVersion, }; diff --git a/packages/meshbay-hub/src/meshbay_hub/static/vendor/PROVENANCE.md b/packages/meshbay-hub/src/meshbay_hub/static/vendor/PROVENANCE.md new file mode 100644 index 0000000..35d742b --- /dev/null +++ b/packages/meshbay-hub/src/meshbay_hub/static/vendor/PROVENANCE.md @@ -0,0 +1,36 @@ +# Vendored third-party assets + +The SPA is served under a CSP that forbids every external host, so anything it +uses has to live here. Each entry records exactly what was taken and from where, +so it can be checked or rebuilt without guesswork. + +## argon2.min.js + +| | | +|---|---| +| Package | `argon2-browser` 1.18.0 (npm) | +| Source | https://registry.npmjs.org/argon2-browser/-/argon2-browser-1.18.0.tgz | +| Tarball sha256 | `cdb11795a4971bde095fe6b836aa424de50c4558ed4b9505bc74111eee7f6d35` | +| Tarball sha1 (npm dist.shasum) | `f35820211e0a431aed7f82b9348477234be69bec` | +| File taken | `package/dist/argon2-bundled.min.js` | +| File sha256 | `77c64b946baf1a5116dc591f4b9965d636b1b455f75edd2d4a587cb75e01687b` | + +The bundled build carries the WebAssembly inline as base64, so there is no second +request and nothing to locate at runtime. + +**Why it is here at all:** WebCrypto has no memory-hard KDF. The encrypted +keypair bundle is protected by the passphrase alone and rests on every node whose +group its owner joins (finding C4), so PBKDF2 — compute-only, and therefore cheap +on a GPU — was the wrong tool for it. Measured through this build on the dev +machine: Argon2id 64 MB / t=3 / p=1 takes ~320 ms, against ~240 ms for +PBKDF2-SHA512 at 600k, for a memory cost a GPU cannot ignore. + +### argon2.wasm + +The same build's standalone WebAssembly, sha256 +`0c2149886c13e4eae4a6ca25ee71d47423c5c8740a874cf04ff816d1b2c901d7`. + +The browser never requests it — `argon2.min.js` carries the same bytes inline as +a data URL. It is kept because the cross-language parity test drives the vendored +library under node, where the emscripten loader takes its file path instead of the +inline copy, and a test that cannot run is a test that stops being true. diff --git a/packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.min.js b/packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.min.js new file mode 100644 index 0000000..607e16f --- /dev/null +++ b/packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.min.js @@ -0,0 +1 @@ +!function(A,I){"object"==typeof exports&&"object"==typeof module?module.exports=I():"function"==typeof define&&define.amd?define([],I):"object"==typeof exports?exports.argon2=I():A.argon2=I()}(this,(function(){return(()=>{var A,I,g={773:(A,I,g)=>{var B,Q="undefined"!=typeof self&&void 0!==self.Module?self.Module:{},C={};for(B in Q)Q.hasOwnProperty(B)&&(C[B]=Q[B]);var E,i,o,D,e=[];E="object"==typeof window,i="function"==typeof importScripts,o="object"==typeof process&&"object"==typeof process.versions&&"string"==typeof process.versions.node,D=!E&&!o&&!i;var n,t,a,r,s,y="";o?(y=i?g(967).dirname(y)+"/":"//",n=function(A,I){return r||(r=g(145)),s||(s=g(967)),A=s.normalize(A),r.readFileSync(A,I?null:"utf8")},a=function(A){var I=n(A,!0);return I.buffer||(I=new Uint8Array(I)),G(I.buffer),I},process.argv.length>1&&process.argv[1].replace(/\\/g,"/"),e=process.argv.slice(2),A.exports=Q,process.on("uncaughtException",(function(A){if(!(A instanceof V))throw A})),process.on("unhandledRejection",u),Q.inspect=function(){return"[Emscripten Module object]"}):D?("undefined"!=typeof read&&(n=function(A){return read(A)}),a=function(A){var I;return"function"==typeof readbuffer?new Uint8Array(readbuffer(A)):(G("object"==typeof(I=read(A,"binary"))),I)},"undefined"!=typeof scriptArgs?e=scriptArgs:void 0!==arguments&&(e=arguments),"undefined"!=typeof print&&("undefined"==typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!=typeof printErr?printErr:print)):(E||i)&&(i?y=self.location.href:"undefined"!=typeof document&&document.currentScript&&(y=document.currentScript.src),y=0!==y.indexOf("blob:")?y.substr(0,y.lastIndexOf("/")+1):"",n=function(A){var I=new XMLHttpRequest;return I.open("GET",A,!1),I.send(null),I.responseText},i&&(a=function(A){var I=new XMLHttpRequest;return I.open("GET",A,!1),I.responseType="arraybuffer",I.send(null),new Uint8Array(I.response)}),t=function(A,I,g){var B=new XMLHttpRequest;B.open("GET",A,!0),B.responseType="arraybuffer",B.onload=function(){200==B.status||0==B.status&&B.response?I(B.response):g()},B.onerror=g,B.send(null)}),Q.print||console.log.bind(console);var F,c,w=Q.printErr||console.warn.bind(console);for(B in C)C.hasOwnProperty(B)&&(Q[B]=C[B]);C=null,Q.arguments&&(e=Q.arguments),Q.thisProgram&&Q.thisProgram,Q.quit&&Q.quit,Q.wasmBinary&&(F=Q.wasmBinary),Q.noExitRuntime,"object"!=typeof WebAssembly&&u("no native wasm support detected");var h=!1;function G(A,I){A||u("Assertion failed: "+I)}var N,R,f="undefined"!=typeof TextDecoder?new TextDecoder("utf8"):void 0;function U(A){N=A,Q.HEAP8=new Int8Array(A),Q.HEAP16=new Int16Array(A),Q.HEAP32=new Int32Array(A),Q.HEAPU8=R=new Uint8Array(A),Q.HEAPU16=new Uint16Array(A),Q.HEAPU32=new Uint32Array(A),Q.HEAPF32=new Float32Array(A),Q.HEAPF64=new Float64Array(A)}Q.INITIAL_MEMORY;var M,Y=[],S=[],H=[],d=0,k=null,J=null;function u(A){throw Q.onAbort&&Q.onAbort(A),w(A+=""),h=!0,A="abort("+A+"). 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\ No newline at end of file diff --git a/packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.wasm b/packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.wasm Binary files differnew file mode 100755 index 0000000..75c3111 --- /dev/null +++ b/packages/meshbay-hub/src/meshbay_hub/static/vendor/argon2.wasm diff --git a/packages/meshbay-hub/tests/test_bundle_kdf_parity.py b/packages/meshbay-hub/tests/test_bundle_kdf_parity.py new file mode 100644 index 0000000..c3c8ff9 --- /dev/null +++ b/packages/meshbay-hub/tests/test_bundle_kdf_parity.py @@ -0,0 +1,131 @@ +""" +Cross-language parity for the keypair bundle KDF. + +The bundle is the one thing a user carries between browsers, and the passphrase +is all that stands between it and whoever holds the disk of a node they joined +(finding C4). It moved from PBKDF2-SHA512 to Argon2id for that reason — PBKDF2 is +compute-only, which is what makes it cheap on a GPU. + +Two implementations now have to agree byte for byte: the vendored WebAssembly the +browser runs, and `argon2-cffi` used by the QE harness. A disagreement would not +show up as an error — it would show up as a bundle nobody can open, which is +somebody's account gone. + +Skipped when node or argon2-cffi is missing; that is a coverage gap, not a pass. +""" + +import hashlib +import json +import shutil +import subprocess +from pathlib import Path + +import pytest + +STATIC = Path(__file__).resolve().parents[1] / "src" / "meshbay_hub" / "static" +VENDOR = STATIC / "vendor" + +try: + from argon2.low_level import Type, hash_secret_raw + HAVE_ARGON2 = True +except ImportError: + HAVE_ARGON2 = False + +pytestmark = pytest.mark.skipif( + shutil.which("node") is None + or not (VENDOR / "argon2.min.js").exists() + or not HAVE_ARGON2, + reason="node, the vendored argon2, or argon2-cffi is unavailable", +) + +# Parameters must match keyderive.js. If someone tunes them there and not here, +# this test fails — which is the point: changing them silently orphans every +# bundle already written. +MEM_KIB, TIME_COST, LANES = 65536, 3, 1 + +CASES = ["alice", "grenet", "utilisateur-é", ""] +PASSWORDS = ["correct horse battery staple", "p", "üñïçø∂é ✓ 🔐"] + +_HARNESS = r""" +const fs = require('fs'), webcrypto = require('crypto').webcrypto; +global.self = global; global.crypto = webcrypto; +// The browser uses the copy inlined in the bundle; under node the emscripten +// loader looks for a file, so hand it the same bytes explicitly. +global.Module = { wasmBinary: fs.readFileSync(process.argv[2]) }; +const argon2 = require(process.argv[3]); + +(async () => { + const input = JSON.parse(fs.readFileSync(process.argv[4], 'utf8')); + const out = []; + for (const v of input) { + const salt = new Uint8Array(await webcrypto.subtle.digest( + 'SHA-256', new TextEncoder().encode(`meshbay:bundle:v2:${v.username}`) + )).slice(0, 16); + const r = await argon2.hash({ + pass: v.password, salt, + time: v.time, mem: v.mem, parallelism: v.lanes, + hashLen: 32, type: argon2.ArgonType.Argon2id, + }); + out.push(Buffer.from(r.hash).toString('hex')); + } + process.stdout.write(JSON.stringify(out)); +})(); +""" + + +@pytest.fixture(scope="module") +def js_hashes(tmp_path_factory): + d = tmp_path_factory.mktemp("kdf") + harness = d / "harness.cjs" + harness.write_text(_HARNESS) + vectors = [ + {"username": u, "password": p, + "mem": MEM_KIB, "time": TIME_COST, "lanes": LANES} + for u in CASES for p in PASSWORDS + ] + payload = d / "vectors.json" + payload.write_text(json.dumps(vectors)) + + proc = subprocess.run( + ["node", str(harness), str(VENDOR / "argon2.wasm"), + str(VENDOR / "argon2.min.js"), str(payload)], + capture_output=True, text=True, timeout=300, + ) + if proc.returncode != 0: + pytest.fail(f"node harness failed:\n{proc.stderr[-2000:]}") + return vectors, json.loads(proc.stdout) + + +def _python_hash(username: str, password: str) -> str: + salt = hashlib.sha256(f"meshbay:bundle:v2:{username}".encode()).digest()[:16] + return hash_secret_raw( + password.encode(), salt, time_cost=TIME_COST, memory_cost=MEM_KIB, + parallelism=LANES, hash_len=32, type=Type.ID, + ).hex() + + +def test_bundle_key_matches_across_languages(js_hashes): + vectors, js = js_hashes + for i, v in enumerate(vectors): + assert js[i] == _python_hash(v["username"], v["password"]), ( + f"argon2id disagrees for username={v['username']!r} — a bundle " + f"written by one implementation would be unreadable by the other" + ) + + +def test_the_salt_separates_users(js_hashes): + """Two accounts with the same passphrase must not share a bundle key.""" + assert _python_hash("alice", "same passphrase") != \ + _python_hash("bob", "same passphrase") + + +def test_parameters_still_match_the_client(): + """ + The numbers live in keyderive.js; this test is the second copy. Tuning one + without the other orphans every bundle already written, so make it fail. + """ + source = (STATIC / "keyderive.js").read_text() + assert f"ARGON2_MEM_KIB = {MEM_KIB}" in source + assert f"ARGON2_TIME = {TIME_COST}" in source + assert f"ARGON2_LANES = {LANES}" in source + assert "meshbay:bundle:v2:" in source |