lib6/encryption/browser/crypto.js

/**
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * 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.
 */
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
/**
 * @private
 */
export default class CryptoProvider {
    encrypt(key, message, aad) {
        return __awaiter(this, void 0, void 0, function* () {
            const iv = this.getRandomValues(12);
            return {
                // @ts-expect-error
                cyphertext: yield window.crypto.subtle.encrypt({
                    name: 'AES-GCM',
                    iv,
                    additionalData: aad
                }, 
                // @ts-expect-error
                // eslint-disable-next-line
                yield window.crypto.subtle.importKey('raw', key, { name: 'AES-GCM', length: 256 }, false, ['encrypt']), message),
                iv
            };
        });
    }
    decrypt(key, iv, message, aad) {
        return __awaiter(this, void 0, void 0, function* () {
            // @ts-expect-error
            // eslint-disable-next-line
            return yield window.crypto.subtle.decrypt({
                name: 'AES-GCM',
                iv,
                additionalData: aad
            }, 
            // @ts-expect-error
            yield window.crypto.subtle.importKey('raw', key, { name: 'AES-GCM', length: 256 }, false, ['decrypt']), message);
        });
    }
    getRandomValues(length) {
        // @ts-expect-error
        return window.crypto.getRandomValues(new Uint8Array(length));
    }
}