include node_modules so release .zip is deployable

node_modules/nostr-tools/lib/cjs/nip44.js

@@ -0,0 +1,126 @@
+"use strict";
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+
+// nip44.ts
+var nip44_exports = {};
+__export(nip44_exports, {
+  decrypt: () => decrypt,
+  encrypt: () => encrypt,
+  utils: () => utils
+});
+module.exports = __toCommonJS(nip44_exports);
+var import_chacha = require("@noble/ciphers/chacha");
+var import_utils = require("@noble/ciphers/utils");
+var import_secp256k1 = require("@noble/curves/secp256k1");
+var import_hkdf = require("@noble/hashes/hkdf");
+var import_hmac = require("@noble/hashes/hmac");
+var import_sha256 = require("@noble/hashes/sha256");
+var import_utils2 = require("@noble/hashes/utils");
+var import_base = require("@scure/base");
+
+// utils.ts
+var utf8Decoder = new TextDecoder("utf-8");
+var utf8Encoder = new TextEncoder();
+
+// nip44.ts
+var utils = {
+  v2: {
+    maxPlaintextSize: 65536 - 128,
+    minCiphertextSize: 100,
+    maxCiphertextSize: 102400,
+    getConversationKey(privkeyA, pubkeyB) {
+      const key = import_secp256k1.secp256k1.getSharedSecret(privkeyA, "02" + pubkeyB);
+      return key.subarray(1, 33);
+    },
+    getMessageKeys(conversationKey, salt) {
+      const keys = (0, import_hkdf.hkdf)(import_sha256.sha256, conversationKey, salt, "nip44-v2", 76);
+      return {
+        encryption: keys.subarray(0, 32),
+        nonce: keys.subarray(32, 44),
+        auth: keys.subarray(44, 76)
+      };
+    },
+    calcPadding(len) {
+      if (!Number.isSafeInteger(len) || len < 0)
+        throw new Error("expected positive integer");
+      if (len <= 32)
+        return 32;
+      const nextpower = 1 << Math.floor(Math.log2(len - 1)) + 1;
+      const chunk = nextpower <= 256 ? 32 : nextpower / 8;
+      return chunk * (Math.floor((len - 1) / chunk) + 1);
+    },
+    pad(unpadded) {
+      const unpaddedB = utf8Encoder.encode(unpadded);
+      const len = unpaddedB.length;
+      if (len < 1 || len >= utils.v2.maxPlaintextSize)
+        throw new Error("invalid plaintext length: must be between 1b and 64KB");
+      const paddedLen = utils.v2.calcPadding(len);
+      const zeros = new Uint8Array(paddedLen - len);
+      const lenBuf = new Uint8Array(2);
+      new DataView(lenBuf.buffer).setUint16(0, len);
+      return (0, import_utils2.concatBytes)(lenBuf, unpaddedB, zeros);
+    },
+    unpad(padded) {
+      const unpaddedLen = new DataView(padded.buffer).getUint16(0);
+      const unpadded = padded.subarray(2, 2 + unpaddedLen);
+      if (unpaddedLen === 0 || unpadded.length !== unpaddedLen || padded.length !== 2 + utils.v2.calcPadding(unpaddedLen))
+        throw new Error("invalid padding");
+      return utf8Decoder.decode(unpadded);
+    }
+  }
+};
+function encrypt(key, plaintext, options = {}) {
+  const version = options.version ?? 2;
+  if (version !== 2)
+    throw new Error("unknown encryption version " + version);
+  const salt = options.salt ?? (0, import_utils2.randomBytes)(32);
+  (0, import_utils.ensureBytes)(salt, 32);
+  const keys = utils.v2.getMessageKeys(key, salt);
+  const padded = utils.v2.pad(plaintext);
+  const ciphertext = (0, import_chacha.chacha20)(keys.encryption, keys.nonce, padded);
+  const mac = (0, import_hmac.hmac)(import_sha256.sha256, keys.auth, ciphertext);
+  return import_base.base64.encode((0, import_utils2.concatBytes)(new Uint8Array([version]), salt, ciphertext, mac));
+}
+function decrypt(key, ciphertext) {
+  const u = utils.v2;
+  (0, import_utils.ensureBytes)(key, 32);
+  const clen = ciphertext.length;
+  if (clen < u.minCiphertextSize || clen >= u.maxCiphertextSize)
+    throw new Error("invalid ciphertext length: " + clen);
+  if (ciphertext[0] === "#")
+    throw new Error("unknown encryption version");
+  let data;
+  try {
+    data = import_base.base64.decode(ciphertext);
+  } catch (error) {
+    throw new Error("invalid base64: " + error.message);
+  }
+  const vers = data.subarray(0, 1)[0];
+  if (vers !== 2)
+    throw new Error("unknown encryption version " + vers);
+  const salt = data.subarray(1, 33);
+  const ciphertext_ = data.subarray(33, -32);
+  const mac = data.subarray(-32);
+  const keys = u.getMessageKeys(key, salt);
+  const calculatedMac = (0, import_hmac.hmac)(import_sha256.sha256, keys.auth, ciphertext_);
+  if (!(0, import_utils.equalBytes)(calculatedMac, mac))
+    throw new Error("invalid MAC");
+  const padded = (0, import_chacha.chacha20)(keys.encryption, keys.nonce, ciphertext_);
+  return u.unpad(padded);
+}