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Текущая директория: /opt/BitGoJS/modules/sdk-lib-mpc/dist/src/tss/ecdsa-dkls
Просмотр файла: dsg.js
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
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desc = { enumerable: true, get: function() { return m[k]; } };
}
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if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
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if (mod && mod.__esModule) return mod;
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__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.Dsg = void 0;
const types_1 = require("./types");
const cbor_x_1 = require("cbor-x");
class Dsg {
constructor(keyShare, partyIdx, derivationPath, messageHash, dklsWasm) {
this.dsgState = types_1.DsgState.Uninitialized;
this.partyIdx = partyIdx;
this.keyShareBytes = keyShare;
this.derivationPath = derivationPath;
this.messageHash = messageHash;
this.dklsWasm = dklsWasm ?? null;
}
_restoreSession() {
if (!this.dsgSession) {
this.dsgSession = this.getDklsWasm().SignSessionOTVariant.fromBytes(this.dsgSessionBytes);
}
}
_deserializeState() {
if (!this.dsgSession) {
throw Error('Session not intialized');
}
const round = (0, cbor_x_1.decode)(this.dsgSession.toBytes()).round;
switch (round) {
case 'WaitMsg1':
this.dsgState = types_1.DsgState.Round1;
break;
case 'WaitMsg2':
this.dsgState = types_1.DsgState.Round2;
break;
case 'WaitMsg3':
this.dsgState = types_1.DsgState.Round3;
break;
case 'Ended':
this.dsgState = types_1.DsgState.Complete;
break;
default:
this.dsgState = types_1.DsgState.InvalidState;
throw Error(`Invalid State: ${round}`);
}
}
async loadDklsWasm() {
if (!this.dklsWasm) {
this.dklsWasm = await Promise.resolve().then(() => __importStar(require('@silencelaboratories/dkls-wasm-ll-node')));
}
}
getDklsWasm() {
if (!this.dklsWasm) {
throw Error('DKLS wasm not loaded');
}
return this.dklsWasm;
}
/**
* Returns the current DSG session as a base64 string.
* @returns {string} - base64 string of the current DSG session
*/
getSession() {
return Buffer.from(this.dsgSessionBytes).toString('base64');
}
/**
* Sets the DSG session from a base64 string.
* @param {string} session - base64 string of the DSG session
*/
async setSession(session) {
this.dsgSession = undefined;
if (!this.dklsWasm) {
await this.loadDklsWasm();
}
const sessionBytes = new Uint8Array(Buffer.from(session, 'base64'));
const round = (0, cbor_x_1.decode)(sessionBytes).round;
switch (true) {
case round === 'WaitMsg1':
this.dsgState = types_1.DsgState.Round1;
break;
case round === 'WaitMsg2':
this.dsgState = types_1.DsgState.Round2;
break;
case round === 'WaitMsg3':
this.dsgState = types_1.DsgState.Round3;
break;
case 'WaitMsg4' in round:
this.dsgState = types_1.DsgState.Round4;
break;
default:
throw Error(`Invalid State: ${round}`);
}
this.dsgSessionBytes = sessionBytes;
}
async init() {
if (this.dsgState !== types_1.DsgState.Uninitialized) {
throw Error('DSG session already initialized');
}
if (!this.dklsWasm) {
await this.loadDklsWasm();
}
if (typeof window !== 'undefined' &&
/* checks for electron processes */
!window.process &&
!window.process?.['type']) {
/* This is only needed for browsers/web because it uses fetch to resolve the wasm asset for the web */
const initDkls = await Promise.resolve().then(() => __importStar(require('@silencelaboratories/dkls-wasm-ll-web')));
await initDkls.default();
}
const { Keyshare, SignSessionOTVariant } = this.getDklsWasm();
const keyShare = Keyshare.fromBytes(this.keyShareBytes);
if (keyShare.partyId !== this.partyIdx) {
throw Error(`Party index: ${this.partyIdx} does not match key share partyId: ${keyShare.partyId} `);
}
this.dsgSession = new SignSessionOTVariant(keyShare, this.derivationPath);
try {
const payload = this.dsgSession.createFirstMessage().payload;
this._deserializeState();
this.dsgSessionBytes = this.dsgSession.toBytes();
this.dsgSession = undefined;
return {
payload: payload,
from: this.partyIdx,
};
}
catch (e) {
throw Error(`Error while creating the first message from party ${this.partyIdx}: ${e}`);
}
}
get signature() {
if (!this._signature) {
throw Error('Can not request signature. Signature not produced yet.');
}
return this._signature;
}
/**
* Ends the DSG session by freeing any heap allocations from wasm. Note that the session is freed if a signature is produced.
*/
endSession() {
if (this._signature) {
new Error('Session already ended because combined signature was produced.');
}
if (this.dsgSession) {
this.dsgSession.free();
}
this.dsgState = types_1.DsgState.Uninitialized;
}
/**
* Proccesses incoming messages to this party in the DKLs DSG protocol and
* produces messages from this party to other parties for the next round.
* @param messagesForIthRound - messages to process the current round
* @returns {DeserializedMessages} - messages to send to other parties for the next round
*/
handleIncomingMessages(messagesForIthRound) {
let nextRoundMessages = [];
let nextRoundDeserializedMessages = { broadcastMessages: [], p2pMessages: [] };
this._restoreSession();
if (!this.dsgSession) {
throw Error('Session not initialized');
}
const { Message } = this.getDklsWasm();
try {
if (this.dsgState === types_1.DsgState.Round4) {
this.dsgState = types_1.DsgState.Complete;
const combineResult = this.dsgSession.combine(messagesForIthRound.broadcastMessages.map((m) => new Message(m.payload, m.from, undefined)));
this._signature = {
R: combineResult[0],
S: combineResult[1],
};
return { broadcastMessages: [], p2pMessages: [] };
}
else {
nextRoundMessages = this.dsgSession.handleMessages(messagesForIthRound.broadcastMessages
.map((m) => new Message(m.payload, m.from, undefined))
.concat(messagesForIthRound.p2pMessages.map((m) => new Message(m.payload, m.from, m.to))));
}
if (this.dsgState === types_1.DsgState.Round3) {
nextRoundMessages = [this.dsgSession.lastMessage(this.messageHash)];
this.dsgState = types_1.DsgState.Round4;
return {
broadcastMessages: [
{
payload: nextRoundMessages[0].payload,
from: nextRoundMessages[0].from_id,
signatureR: (0, cbor_x_1.decode)(this.dsgSession.toBytes()).round.WaitMsg4.r,
},
],
p2pMessages: [],
};
}
else {
// Update round data.
this._deserializeState();
}
nextRoundDeserializedMessages = {
p2pMessages: nextRoundMessages
.filter((m) => m.to_id !== undefined)
.map((m) => {
if (m.to_id === undefined) {
throw Error('Invalid P2P message, missing to_id.');
}
const p2pReturn = {
payload: m.payload,
from: m.from_id,
to: m.to_id,
};
return p2pReturn;
}),
broadcastMessages: nextRoundMessages
.filter((m) => m.to_id === undefined)
.map((m) => {
const broadcastReturn = {
payload: m.payload,
from: m.from_id,
};
return broadcastReturn;
}),
};
}
catch (e) {
if (e.message.startsWith('Abort the protocol and ban')) {
throw Error('Signing aborted. Please stop all transaction signing from this wallet and contact support@bitgo.com.');
}
throw Error(`Error while creating messages from party ${this.partyIdx}, round ${this.dsgState}: ${e}`);
}
finally {
nextRoundMessages.forEach((m) => m.free());
// Session is freed when combine is called.
if (this.dsgState !== types_1.DsgState.Complete) {
this.dsgSessionBytes = this.dsgSession.toBytes();
this.dsgSession = undefined;
}
}
return nextRoundDeserializedMessages;
}
}
exports.Dsg = Dsg;
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{ Message, SignSessionOTVariant } from '@silencelaboratories/dkls-wasm-ll-node';\nimport { DeserializedBroadcastMessage, DeserializedDklsSignature, DeserializedMessages, DsgState } from './types';\nimport { decode } from 'cbor-x';\n\ntype NodeWasmer = typeof import('@silencelaboratories/dkls-wasm-ll-node');\ntype WebWasmer = typeof import('@silencelaboratories/dkls-wasm-ll-web');\ntype BundlerWasmer = typeof import('@silencelaboratories/dkls-wasm-ll-bundler');\n\ntype DklsWasm = NodeWasmer | WebWasmer | BundlerWasmer;\n\nexport class Dsg {\n  protected dsgSession: SignSessionOTVariant | undefined;\n  protected dsgSessionBytes: Uint8Array;\n  private _signature: DeserializedDklsSignature | undefined;\n  protected keyShareBytes: Buffer;\n  protected messageHash: Buffer;\n  protected derivationPath: string;\n  protected partyIdx: number;\n  protected dsgState: DsgState = DsgState.Uninitialized;\n  protected dklsWasm: DklsWasm | null;\n\n  constructor(\n    keyShare: Buffer,\n    partyIdx: number,\n    derivationPath: string,\n    messageHash: Buffer,\n    dklsWasm?: BundlerWasmer\n  ) {\n    this.partyIdx = partyIdx;\n    this.keyShareBytes = keyShare;\n    this.derivationPath = derivationPath;\n    this.messageHash = messageHash;\n    this.dklsWasm = dklsWasm ?? null;\n  }\n\n  private _restoreSession() {\n    if (!this.dsgSession) {\n      this.dsgSession = this.getDklsWasm().SignSessionOTVariant.fromBytes(this.dsgSessionBytes);\n    }\n  }\n\n  private _deserializeState() {\n    if (!this.dsgSession) {\n      throw Error('Session not intialized');\n    }\n    const round = decode(this.dsgSession.toBytes()).round;\n    switch (round) {\n      case 'WaitMsg1':\n        this.dsgState = DsgState.Round1;\n        break;\n      case 'WaitMsg2':\n        this.dsgState = DsgState.Round2;\n        break;\n      case 'WaitMsg3':\n        this.dsgState = DsgState.Round3;\n        break;\n      case 'Ended':\n        this.dsgState = DsgState.Complete;\n        break;\n      default:\n        this.dsgState = DsgState.InvalidState;\n        throw Error(`Invalid State: ${round}`);\n    }\n  }\n\n  private async loadDklsWasm(): Promise<void> {\n    if (!this.dklsWasm) {\n      this.dklsWasm = await import('@silencelaboratories/dkls-wasm-ll-node');\n    }\n  }\n\n  private getDklsWasm() {\n    if (!this.dklsWasm) {\n      throw Error('DKLS wasm not loaded');\n    }\n\n    return this.dklsWasm;\n  }\n\n  /**\n   * Returns the current DSG session as a base64 string.\n   * @returns {string} - base64 string of the current DSG session\n   */\n  getSession(): string {\n    return Buffer.from(this.dsgSessionBytes).toString('base64');\n  }\n\n  /**\n   * Sets the DSG session from a base64 string.\n   * @param {string} session - base64 string of the DSG session\n   */\n  async setSession(session: string): Promise<void> {\n    this.dsgSession = undefined;\n    if (!this.dklsWasm) {\n      await this.loadDklsWasm();\n    }\n    const sessionBytes = new Uint8Array(Buffer.from(session, 'base64'));\n    const round = decode(sessionBytes).round;\n    switch (true) {\n      case round === 'WaitMsg1':\n        this.dsgState = DsgState.Round1;\n        break;\n      case round === 'WaitMsg2':\n        this.dsgState = DsgState.Round2;\n        break;\n      case round === 'WaitMsg3':\n        this.dsgState = DsgState.Round3;\n        break;\n      case 'WaitMsg4' in round:\n        this.dsgState = DsgState.Round4;\n        break;\n      default:\n        throw Error(`Invalid State: ${round}`);\n    }\n    this.dsgSessionBytes = sessionBytes;\n  }\n\n  async init(): Promise<DeserializedBroadcastMessage> {\n    if (this.dsgState !== DsgState.Uninitialized) {\n      throw Error('DSG session already initialized');\n    }\n    if (!this.dklsWasm) {\n      await this.loadDklsWasm();\n    }\n    if (\n      typeof window !== 'undefined' &&\n      /* checks for electron processes */\n      !window.process &&\n      !window.process?.['type']\n    ) {\n      /* This is only needed for browsers/web because it uses fetch to resolve the wasm asset for the web */\n      const initDkls = await import('@silencelaboratories/dkls-wasm-ll-web');\n      await initDkls.default();\n    }\n    const { Keyshare, SignSessionOTVariant } = this.getDklsWasm();\n    const keyShare = Keyshare.fromBytes(this.keyShareBytes);\n    if (keyShare.partyId !== this.partyIdx) {\n      throw Error(`Party index: ${this.partyIdx} does not match key share partyId: ${keyShare.partyId} `);\n    }\n    this.dsgSession = new SignSessionOTVariant(keyShare, this.derivationPath);\n    try {\n      const payload = this.dsgSession.createFirstMessage().payload;\n      this._deserializeState();\n      this.dsgSessionBytes = this.dsgSession.toBytes();\n      this.dsgSession = undefined;\n      return {\n        payload: payload,\n        from: this.partyIdx,\n      };\n    } catch (e) {\n      throw Error(`Error while creating the first message from party ${this.partyIdx}: ${e}`);\n    }\n  }\n\n  get signature(): DeserializedDklsSignature {\n    if (!this._signature) {\n      throw Error('Can not request signature. Signature not produced yet.');\n    }\n    return this._signature;\n  }\n\n  /**\n   * Ends the DSG session by freeing any heap allocations from wasm. Note that the session is freed if a signature is produced.\n   */\n  endSession(): void {\n    if (this._signature) {\n      new Error('Session already ended because combined signature was produced.');\n    }\n    if (this.dsgSession) {\n      this.dsgSession.free();\n    }\n    this.dsgState = DsgState.Uninitialized;\n  }\n\n  /**\n   * Proccesses incoming messages to this party in the DKLs DSG protocol and\n   * produces messages from this party to other parties for the next round.\n   * @param messagesForIthRound - messages to process the current round\n   * @returns {DeserializedMessages} - messages to send to other parties for the next round\n   */\n  handleIncomingMessages(messagesForIthRound: DeserializedMessages): DeserializedMessages {\n    let nextRoundMessages: Message[] = [];\n    let nextRoundDeserializedMessages: DeserializedMessages = { broadcastMessages: [], p2pMessages: [] };\n    this._restoreSession();\n    if (!this.dsgSession) {\n      throw Error('Session not initialized');\n    }\n    const { Message } = this.getDklsWasm();\n    try {\n      if (this.dsgState === DsgState.Round4) {\n        this.dsgState = DsgState.Complete;\n        const combineResult = this.dsgSession.combine(\n          messagesForIthRound.broadcastMessages.map((m) => new Message(m.payload, m.from, undefined))\n        );\n        this._signature = {\n          R: combineResult[0],\n          S: combineResult[1],\n        };\n        return { broadcastMessages: [], p2pMessages: [] };\n      } else {\n        nextRoundMessages = this.dsgSession.handleMessages(\n          messagesForIthRound.broadcastMessages\n            .map((m) => new Message(m.payload, m.from, undefined))\n            .concat(messagesForIthRound.p2pMessages.map((m) => new Message(m.payload, m.from, m.to)))\n        );\n      }\n      if (this.dsgState === DsgState.Round3) {\n        nextRoundMessages = [this.dsgSession.lastMessage(this.messageHash)];\n        this.dsgState = DsgState.Round4;\n        return {\n          broadcastMessages: [\n            {\n              payload: nextRoundMessages[0].payload,\n              from: nextRoundMessages[0].from_id,\n              signatureR: decode(this.dsgSession.toBytes()).round.WaitMsg4.r,\n            },\n          ],\n          p2pMessages: [],\n        };\n      } else {\n        // Update round data.\n        this._deserializeState();\n      }\n      nextRoundDeserializedMessages = {\n        p2pMessages: nextRoundMessages\n          .filter((m) => m.to_id !== undefined)\n          .map((m) => {\n            if (m.to_id === undefined) {\n              throw Error('Invalid P2P message, missing to_id.');\n            }\n            const p2pReturn = {\n              payload: m.payload,\n              from: m.from_id,\n              to: m.to_id,\n            };\n            return p2pReturn;\n          }),\n        broadcastMessages: nextRoundMessages\n          .filter((m) => m.to_id === undefined)\n          .map((m) => {\n            const broadcastReturn = {\n              payload: m.payload,\n              from: m.from_id,\n            };\n            return broadcastReturn;\n          }),\n      };\n    } catch (e) {\n      if (e.message.startsWith('Abort the protocol and ban')) {\n        throw Error(\n          'Signing aborted. Please stop all transaction signing from this wallet and contact support@bitgo.com.'\n        );\n      }\n      throw Error(`Error while creating messages from party ${this.partyIdx}, round ${this.dsgState}: ${e}`);\n    } finally {\n      nextRoundMessages.forEach((m) => m.free());\n      // Session is freed when combine is called.\n      if (this.dsgState !== DsgState.Complete) {\n        this.dsgSessionBytes = this.dsgSession.toBytes();\n        this.dsgSession = undefined;\n      }\n    }\n    return nextRoundDeserializedMessages;\n  }\n}\n"]}Выполнить команду
Для локальной разработки. Не используйте в интернете!