init

2025-05-19 20:36:21 -05:00
commit f5303487be
1865 changed files with 260387 additions and 0 deletions
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+// Output Feedback
+var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
+    if (kind === "m") throw new TypeError("Private method is not writable");
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+};
+var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+};
+var _OFB_iv, _OFB_lastPrecipher, _OFB_lastPrecipherIndex;
+import { ModeOfOperation } from "./mode.js";
+export class OFB extends ModeOfOperation {
+    constructor(key, iv) {
+        super("OFB", key, OFB);
+        _OFB_iv.set(this, void 0);
+        _OFB_lastPrecipher.set(this, void 0);
+        _OFB_lastPrecipherIndex.set(this, void 0);
+        if (iv) {
+            if (iv.length % 16) {
+                throw new TypeError("invalid iv size (must be 16 bytes)");
+            }
+            __classPrivateFieldSet(this, _OFB_iv, new Uint8Array(iv), "f");
+        }
+        else {
+            __classPrivateFieldSet(this, _OFB_iv, new Uint8Array(16), "f");
+        }
+        __classPrivateFieldSet(this, _OFB_lastPrecipher, this.iv, "f");
+        __classPrivateFieldSet(this, _OFB_lastPrecipherIndex, 16, "f");
+    }
+    get iv() { return new Uint8Array(__classPrivateFieldGet(this, _OFB_iv, "f")); }
+    encrypt(plaintext) {
+        var _a, _b;
+        if (plaintext.length % 16) {
+            throw new TypeError("invalid plaintext size (must be multiple of 16 bytes)");
+        }
+        const ciphertext = new Uint8Array(plaintext);
+        for (let i = 0; i < ciphertext.length; i++) {
+            if (__classPrivateFieldGet(this, _OFB_lastPrecipherIndex, "f") === 16) {
+                __classPrivateFieldSet(this, _OFB_lastPrecipher, this.aes.encrypt(__classPrivateFieldGet(this, _OFB_lastPrecipher, "f")), "f");
+                __classPrivateFieldSet(this, _OFB_lastPrecipherIndex, 0, "f");
+            }
+            ciphertext[i] ^= __classPrivateFieldGet(this, _OFB_lastPrecipher, "f")[__classPrivateFieldSet(this, _OFB_lastPrecipherIndex, (_b = __classPrivateFieldGet(this, _OFB_lastPrecipherIndex, "f"), _a = _b++, _b), "f"), _a];
+        }
+        return ciphertext;
+    }
+    decrypt(ciphertext) {
+        if (ciphertext.length % 16) {
+            throw new TypeError("invalid ciphertext size (must be multiple of 16 bytes)");
+        }
+        return this.encrypt(ciphertext);
+    }
+}
+_OFB_iv = new WeakMap(), _OFB_lastPrecipher = new WeakMap(), _OFB_lastPrecipherIndex = new WeakMap();
+//# sourceMappingURL=mode-ofb.js.map