init

node_modules/matrix-js-sdk/lib/utils/internal/deriveKeys.d.ts

@@ -0,0 +1,10 @@
+/**
+ * Derive AES and HMAC keys from a master key.
+ *
+ * This is used for deriving secret storage keys: see https://spec.matrix.org/v1.11/client-server-api/#msecret_storagev1aes-hmac-sha2 (step 1).
+ *
+ * @param key
+ * @param name
+ */
+export declare function deriveKeys(key: Uint8Array<ArrayBuffer>, name: string): Promise<[CryptoKey, CryptoKey]>;
+//# sourceMappingURL=deriveKeys.d.ts.map

node_modules/matrix-js-sdk/lib/utils/internal/deriveKeys.d.ts.map

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node_modules/matrix-js-sdk/lib/utils/internal/deriveKeys.js

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2024 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// salt for HKDF, with 8 bytes of zeros
+const zeroSalt = new Uint8Array(8);
+
+/**
+ * Derive AES and HMAC keys from a master key.
+ *
+ * This is used for deriving secret storage keys: see https://spec.matrix.org/v1.11/client-server-api/#msecret_storagev1aes-hmac-sha2 (step 1).
+ *
+ * @param key
+ * @param name
+ */
+export async function deriveKeys(key, name) {
+  const hkdfkey = await globalThis.crypto.subtle.importKey("raw", key, {
+    name: "HKDF"
+  }, false, ["deriveBits"]);
+  const keybits = await globalThis.crypto.subtle.deriveBits({
+    name: "HKDF",
+    salt: zeroSalt,
+    // @ts-ignore: https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/879
+    info: new TextEncoder().encode(name),
+    hash: "SHA-256"
+  }, hkdfkey, 512);
+  const aesKey = keybits.slice(0, 32);
+  const hmacKey = keybits.slice(32);
+  const aesProm = globalThis.crypto.subtle.importKey("raw", aesKey, {
+    name: "AES-CTR"
+  }, false, ["encrypt", "decrypt"]);
+  const hmacProm = globalThis.crypto.subtle.importKey("raw", hmacKey, {
+    name: "HMAC",
+    hash: {
+      name: "SHA-256"
+    }
+  }, false, ["sign", "verify"]);
+  return Promise.all([aesProm, hmacProm]);
+}
+//# sourceMappingURL=deriveKeys.js.map

node_modules/matrix-js-sdk/lib/utils/internal/deriveKeys.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"deriveKeys.js","names":[],"sources":["../../../src/utils/internal/deriveKeys.ts"],"sourcesContent":["/*\n * Copyright 2024 The Matrix.org Foundation C.I.C.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *     http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n// salt for HKDF, with 8 bytes of zeros\nconst zeroSalt = new Uint8Array(8);\n\n/**\n * Derive AES and HMAC keys from a master key.\n *\n * This is used for deriving secret storage keys: see https://spec.matrix.org/v1.11/client-server-api/#msecret_storagev1aes-hmac-sha2 (step 1).\n *\n * @param key\n * @param name\n */\nexport async function deriveKeys(key: Uint8Array<ArrayBuffer>, name: string): Promise<[CryptoKey, CryptoKey]> {\n    const hkdfkey = await globalThis.crypto.subtle.importKey(\"raw\", key, { name: \"HKDF\" }, false, [\"deriveBits\"]);\n    const keybits = await globalThis.crypto.subtle.deriveBits(\n        {\n            name: \"HKDF\",\n            salt: zeroSalt,\n            // @ts-ignore: https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/879\n            info: new TextEncoder().encode(name),\n            hash: \"SHA-256\",\n        },\n        hkdfkey,\n        512,\n    );\n\n    const aesKey = keybits.slice(0, 32);\n    const hmacKey = keybits.slice(32);\n\n    const aesProm = globalThis.crypto.subtle.importKey(\"raw\", aesKey, { name: \"AES-CTR\" }, false, [\n        \"encrypt\",\n        \"decrypt\",\n    ]);\n\n    const hmacProm = globalThis.crypto.subtle.importKey(\n        \"raw\",\n        hmacKey,\n        {\n            name: \"HMAC\",\n            hash: { name: \"SHA-256\" },\n        },\n        false,\n        [\"sign\", \"verify\"],\n    );\n\n    return Promise.all([aesProm, hmacProm]);\n}\n"],"mappings":"AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA,MAAM,QAAQ,GAAG,IAAI,UAAU,CAAC,CAAC,CAAC;;AAElC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,OAAO,eAAe,UAAU,CAAC,GAA4B,EAAE,IAAY,EAAmC;EAC1G,MAAM,OAAO,GAAG,MAAM,UAAU,CAAC,MAAM,CAAC,MAAM,CAAC,SAAS,CAAC,KAAK,EAAE,GAAG,EAAE;IAAE,IAAI,EAAE;EAAO,CAAC,EAAE,KAAK,EAAE,CAAC,YAAY,CAAC,CAAC;EAC7G,MAAM,OAAO,GAAG,MAAM,UAAU,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,CACrD;IACI,IAAI,EAAE,MAAM;IACZ,IAAI,EAAE,QAAQ;IACd;IACA,IAAI,EAAE,IAAI,WAAW,CAAC,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC;IACpC,IAAI,EAAE;EACV,CAAC,EACD,OAAO,EACP,GACJ,CAAC;EAED,MAAM,MAAM,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,EAAE,EAAE,CAAC;EACnC,MAAM,OAAO,GAAG,OAAO,CAAC,KAAK,CAAC,EAAE,CAAC;EAEjC,MAAM,OAAO,GAAG,UAAU,CAAC,MAAM,CAAC,MAAM,CAAC,SAAS,CAAC,KAAK,EAAE,MAAM,EAAE;IAAE,IAAI,EAAE;EAAU,CAAC,EAAE,KAAK,EAAE,CAC1F,SAAS,EACT,SAAS,CACZ,CAAC;EAEF,MAAM,QAAQ,GAAG,UAAU,CAAC,MAAM,CAAC,MAAM,CAAC,SAAS,CAC/C,KAAK,EACL,OAAO,EACP;IACI,IAAI,EAAE,MAAM;IACZ,IAAI,EAAE;MAAE,IAAI,EAAE;IAAU;EAC5B,CAAC,EACD,KAAK,EACL,CAAC,MAAM,EAAE,QAAQ,CACrB,CAAC;EAED,OAAO,OAAO,CAAC,GAAG,CAAC,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;AAC3C","ignoreList":[]}