1 files changed, 128 insertions, 0 deletions
diff --git a/ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/encrypter.js b/ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/encrypter.js
new file mode 100644
index 000000000..6a95a719c
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+++ b/ext/node/polyfills/_crypto/crypto_browserify/browserify_aes/encrypter.js
@@ -0,0 +1,128 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+// Copyright 2014-2017 browserify-aes contributors. All rights reserved. MIT license.
+// Copyright 2013 Maxwell Krohn. All rights reserved. MIT license.
+// Copyright 2009-2013 Jeff Mott. All rights reserved. MIT license.
+
+// deno-lint-ignore-file no-var
+
+import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
+import AuthCipher from "internal:deno_node/polyfills/_crypto/crypto_browserify/browserify_aes/auth_cipher.js";
+import StreamCipher from "internal:deno_node/polyfills/_crypto/crypto_browserify/browserify_aes/stream_cipher.js";
+import Transform from "internal:deno_node/polyfills/_crypto/crypto_browserify/cipher_base.js";
+import * as aes from "internal:deno_node/polyfills/_crypto/crypto_browserify/browserify_aes/aes.js";
+import ebtk from "internal:deno_node/polyfills/_crypto/crypto_browserify/evp_bytes_to_key.ts";
+import { MODES } from "internal:deno_node/polyfills/_crypto/crypto_browserify/browserify_aes/modes/mod.js";
+
+function Cipher(mode, key, iv) {
+  Transform.call(this);
+
+  this._cache = new Splitter();
+  this._cipher = new aes.AES(key);
+  this._prev = Buffer.from(iv);
+  this._mode = mode;
+  this._autopadding = true;
+}
+
+Cipher.prototype = Object.create(Transform.prototype, {
+  constructor: {
+    value: Cipher,
+    enumerable: false,
+    writable: true,
+    configurable: true,
+  },
+});
+
+Cipher.prototype._update = function (data) {
+  this._cache.add(data);
+  var chunk;
+  var thing;
+  var out = [];
+
+  while ((chunk = this._cache.get())) {
+    thing = this._mode.encrypt(this, chunk);
+    out.push(thing);
+  }
+
+  return Buffer.concat(out);
+};
+
+var PADDING = Buffer.alloc(16, 0x10);
+
+Cipher.prototype._final = function () {
+  var chunk = this._cache.flush();
+  if (this._autopadding) {
+    chunk = this._mode.encrypt(this, chunk);
+    this._cipher.scrub();
+    return chunk;
+  }
+
+  if (!chunk.equals(PADDING)) {
+    this._cipher.scrub();
+    throw new Error("data not multiple of block length");
+  }
+};
+
+Cipher.prototype.setAutoPadding = function (setTo) {
+  this._autopadding = !!setTo;
+  return this;
+};
+
+function Splitter() {
+  this.cache = Buffer.allocUnsafe(0);
+}
+
+Splitter.prototype.add = function (data) {
+  this.cache = Buffer.concat([this.cache, data]);
+};
+
+Splitter.prototype.get = function () {
+  if (this.cache.length > 15) {
+    const out = this.cache.slice(0, 16);
+    this.cache = this.cache.slice(16);
+    return out;
+  }
+  return null;
+};
+
+Splitter.prototype.flush = function () {
+  var len = 16 - this.cache.length;
+  var padBuff = Buffer.allocUnsafe(len);
+
+  var i = -1;
+  while (++i < len) {
+    padBuff.writeUInt8(len, i);
+  }
+
+  return Buffer.concat([this.cache, padBuff]);
+};
+
+export function createCipheriv(suite, password, iv) {
+  var config = MODES[suite.toLowerCase()];
+  if (!config) throw new TypeError("invalid suite type");
+
+  if (typeof password === "string") password = Buffer.from(password);
+  if (password.length !== config.key / 8) {
+    throw new TypeError("invalid key length " + password.length);
+  }
+
+  if (typeof iv === "string") iv = Buffer.from(iv);
+  if (config.mode !== "GCM" && iv.length !== config.iv) {
+    throw new TypeError("invalid iv length " + iv.length);
+  }
+
+  if (config.type === "stream") {
+    return new StreamCipher(config.module, password, iv);
+  } else if (config.type === "auth") {
+    return new AuthCipher(config.module, password, iv);
+  }
+
+  return new Cipher(config.module, password, iv);
+}
+
+export function createCipher(suite, password) {
+  var config = MODES[suite.toLowerCase()];
+  if (!config) throw new TypeError("invalid suite type");
+
+  var keys = ebtk(password, false, config.key, config.iv);
+  return createCipheriv(suite, keys.key, keys.iv);
+}