@hpke/core/script/src/senderContext.js

A Hybrid Public Key Encryption (HPKE) core module for various JavaScript runtimes

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 __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;
};
(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports", "@hpke/common", "./encryptionContext.js", "./mutex.js"], factory);
    }
})(function (require, exports) {
    "use strict";
    var _SenderContextImpl_mutex;
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.SenderContextImpl = void 0;
    const common_1 = require("@hpke/common");
    const encryptionContext_js_1 = require("./encryptionContext.js");
    const mutex_js_1 = require("./mutex.js");
    class SenderContextImpl extends encryptionContext_js_1.EncryptionContextImpl {
        constructor(api, kdf, params, enc) {
            super(api, kdf, params);
            Object.defineProperty(this, "enc", {
                enumerable: true,
                configurable: true,
                writable: true,
                value: void 0
            });
            _SenderContextImpl_mutex.set(this, void 0);
            this.enc = enc;
        }
        async seal(data, aad = common_1.EMPTY.buffer) {
            __classPrivateFieldSet(this, _SenderContextImpl_mutex, __classPrivateFieldGet(this, _SenderContextImpl_mutex, "f") ?? new mutex_js_1.Mutex(), "f");
            const release = await __classPrivateFieldGet(this, _SenderContextImpl_mutex, "f").lock();
            let ct;
            try {
                ct = await this._ctx.key.seal(this.computeNonce(this._ctx), data, aad);
            }
            catch (e) {
                throw new common_1.SealError(e);
            }
            finally {
                release();
            }
            this.incrementSeq(this._ctx);
            return ct;
        }
    }
    exports.SenderContextImpl = SenderContextImpl;
    _SenderContextImpl_mutex = new WeakMap();
});