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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | 1x 1x 12x 1x 12x 8x 8x 4x 1x 7x 7x 7x 7x 7x 7x 6x 1x 5x 5x 5x 2x 1x 1x | /** * Copyright 2019 NEM * * 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. */ import { MnemonicPassPhrase } from 'symbol-hd-wallets'; // internal dependencies import { EncryptedPayload, EncryptionService, MnemonicQR, QRCodeDataSchema, QRCodeType, } from '../../index'; /** * Class `ExportMnemonicDataSchema` describes an export * account QR code data schema. * * @since 0.3.2 */ class ExportMnemonicDataSchema extends QRCodeDataSchema { constructor() { super(); } /** * The `getData()` method returns an object * that will be stored in the `data` field of * the underlying QR Code JSON content. * * @return {any} */ public getData(qr: MnemonicQR): any { if (qr.encrypted) { // we will store a password encrypted copy of the mnemonic plain text const encryptedData = EncryptionService.encrypt(qr.mnemonicPlainText, qr.password); return { "ciphertext": encryptedData.ciphertext, "salt": encryptedData.salt, }; } else { return { "plainMnemonic": qr.mnemonicPlainText } } } /** * Parse a JSON QR code content into a MnemonicQR * object. * * @param json {string} * @param password {string=} Optional password * @return {MnemonicQR} * @throws {Error} On empty `json` given. * @throws {Error} On missing `type` field value. * @throws {Error} On unrecognized QR code `type` field value. * @throws {Error} On invalid password. */ public static parse( json: string, password?: string, ): MnemonicQR { Iif (! json.length) { throw new Error('JSON argument cannot be empty.'); } const jsonObj = JSON.parse(json); Iif (!jsonObj.type || jsonObj.type !== QRCodeType.ExportMnemonic) { throw new Error('Invalid type field value for MnemonicQR.'); } Iif (!jsonObj.hasOwnProperty('data')) { throw new Error('Missing mandatory property for encrypted payload.'); } try { // decrypt mnemonic pass phrase const plainTxt = EncryptedPayload.isDataEncrypted(jsonObj.data) ? EncryptionService.decrypt(EncryptedPayload.fromJSON(JSON.stringify(jsonObj.data)), password) : jsonObj.data.plainMnemonic; if (!plainTxt) { throw new Error('Mnemonic pass phrase is not valid!') } const network = jsonObj.network_id; const generationHash = jsonObj.chain_id; return new MnemonicQR(plainTxt, network, generationHash, password); } catch (e) { throw new Error('Could not parse mnemonic pass phrase.'); } } } export {ExportMnemonicDataSchema}; |