miscreant/release/providers/webcrypto.js

Misuse resistant symmetric encryption library providing AES-SIV (RFC 5297), AES-PMAC-SIV, and STREAM constructions

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    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) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const exceptions_1 = require("../exceptions");
const aes_1 = require("./webcrypto/aes");
const aes_ctr_1 = require("./webcrypto/aes_ctr");
/** Placeholder backend for using pure JavaScript crypto implementations */
class WebCryptoProvider {
    constructor(crypto = window.crypto) {
        this.crypto = crypto;
    }
    importBlockCipherKey(keyData) {
        return __awaiter(this, void 0, void 0, function* () {
            return aes_1.default.importKey(this.crypto, keyData);
        });
    }
    importCTRKey(keyData) {
        return __awaiter(this, void 0, void 0, function* () {
            try {
                return yield aes_ctr_1.default.importKey(this.crypto, keyData);
            }
            catch (e) {
                if (e.message.includes("unsupported")) {
                    throw new exceptions_1.NotImplementedError("WebCryptoProvider: AES-CTR unsupported. Use PolyfillCryptoProvider.");
                }
                else {
                    throw e;
                }
            }
        });
    }
}
exports.WebCryptoProvider = WebCryptoProvider;