@c4tplatform/caminojs
Version:
Camino Platform JS Library
226 lines • 29 kB
JavaScript
"use strict";
/**
* @packageDocumentation
* @module Common-MultisigKeyChain
*/
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.MultisigKeyChain = exports.MultisigKeyPair = exports.SignatureError = void 0;
const buffer_1 = require("buffer/");
const _1 = require(".");
const utils_1 = require("../utils");
const bintools_1 = __importDefault(require("../utils/bintools"));
const keychain_1 = require("./keychain");
const secp256k1_1 = require("./secp256k1");
class SignatureError extends Error {
}
exports.SignatureError = SignatureError;
const NotImplemented = new Error("not implemented in MultiSig KeyPair");
const TooManySignatures = new SignatureError("too many signatures");
const serialization = utils_1.Serialization.getInstance();
const bintools = bintools_1.default.getInstance();
const MaxSignatures = 256;
/**
* Class for representing a generic multi signature key.
*/
class MultisigKeyPair extends keychain_1.StandardKeyPair {
generateKey() {
throw NotImplemented;
}
importKey(_) {
return false;
}
sign(_) {
return this.privk;
}
recover(msg, sig) {
throw NotImplemented;
}
verify(msg, sig) {
throw NotImplemented;
}
getAddress() {
return this.pubk;
}
getAddressString() {
const addr = secp256k1_1.SECP256k1KeyPair.addressFromPublicKey(this.pubk);
const type = "bech32";
return serialization.bufferToType(addr, type, this.keyChain.getHRP(), this.keyChain.getChainID());
}
create(...args) {
if (args.length == 3) {
return new MultisigKeyPair(args[0], args[1], args[2]);
}
return new MultisigKeyPair(this.keyChain, this.pubk, this.privk);
}
clone() {
return new MultisigKeyPair(this.keyChain, this.pubk, this.privk);
}
getPrivateKeyString() {
return bintools.cb58Encode(this.privk);
}
getPublicKeyString() {
return bintools.cb58Encode(this.pubk);
}
constructor(keyChain, address, signature) {
super();
this.keyChain = keyChain;
this.pubk = buffer_1.Buffer.from(address);
this.privk = buffer_1.Buffer.from(signature);
}
}
exports.MultisigKeyPair = MultisigKeyPair;
/**
* Class for representing a multisig keyChain in Camino.
*
* @typeparam MultisigKeyChain Class extending [[StandardKeyChain]]
*/
class MultisigKeyChain extends keychain_1.StandardKeyChain {
getHRP() {
return this.hrp;
}
getChainID() {
return this.chainID;
}
create(...args) {
if (args.length == 4) {
return new MultisigKeyChain(args[0], args[1], args[2], args[4]);
}
return new MultisigKeyChain(this.hrp, this.chainID, this.signedBytes, this.credTypeID);
}
clone() {
const newkc = new MultisigKeyChain(this.hrp, this.chainID, this.signedBytes, this.credTypeID);
for (let k in this.keys) {
newkc.addKey(this.keys[`${k}`].clone());
}
newkc.txOwners = new Array(this.txOwners.length);
this.txOwners.forEach((txo, index) => newkc.txOwners[index].fromBuffer(txo.toBuffer()));
return newkc;
}
union(kc) {
if (kc.chainID !== this.chainID ||
kc.hrp != this.hrp ||
kc.signedBytes.compare(this.signedBytes) != 0) {
throw new Error("keychains do not match");
}
const newkc = kc.clone();
Object.assign(newkc.keys, kc.keys);
return newkc;
}
// Visit every txOutputOwner and try to verify with keys.
// Traverse into msig aliases. Throw if one cannot be fulfilled
buildSignatureIndices() {
this.sigIdxs = [];
for (const o of this.txOwners)
this._traverseOwner(o);
}
getCredentials() {
const result = [];
for (const sigSet of this.sigIdxs) {
const cred = new _1.SECPMultisigCredential(this.credTypeID);
for (const sigIdx of sigSet) {
cred.addSSignatureIndex(sigIdx);
const sig = new _1.Signature();
sig.fromBuffer(this.getKey(sigIdx.getSource()).getPrivateKey());
cred.addSignature(sig);
}
result.push(cred);
}
return result;
}
_traverseOwner(owner) {
var addrVisited = 0;
var addrVerified = 0;
const cycleCheck = new Set();
const stack = [
{
index: 0,
verified: 0,
addrVerifiedTotal: 0,
parentVerified: false,
owners: owner
}
];
const sigIdxs = [];
const helper = buffer_1.Buffer.alloc(4);
Stack: while (stack.length > 0) {
// get head
var currentStack = stack[stack.length - 1];
while (currentStack.index < currentStack.owners.getAddressesLength()) {
// get the next address to check
const addr = currentStack.owners.getAddress(currentStack.index);
const addrStr = addr.toString("hex");
currentStack.index++;
// Is it a multi-sig address ?
const alias = this.msigAliases.get(addrStr);
if (alias !== undefined) {
if (stack.length > MaxSignatures) {
throw TooManySignatures;
}
if (cycleCheck.has(addrStr)) {
throw new Error("Cyclic multisig alias");
}
cycleCheck.add(addrStr);
stack.push({
index: 0,
verified: 0,
addrVerifiedTotal: addrVerified,
parentVerified: currentStack.parentVerified ||
currentStack.verified >= currentStack.owners.getThreshold(),
owners: alias
});
continue Stack;
}
else {
if (!currentStack.parentVerified &&
currentStack.verified < currentStack.owners.getThreshold()) {
if (this.hasKey(addr)) {
if (addrVisited > MaxSignatures) {
throw TooManySignatures;
}
const sigIdx = new _1.SigIdx();
sigIdx.setSource(addr);
helper.writeUIntBE(addrVisited, 0, 4);
sigIdx.fromBuffer(helper);
sigIdxs.push(sigIdx);
currentStack.verified++;
addrVerified++;
}
}
addrVisited++;
}
}
// remove head
stack.pop();
// verify current level
if (currentStack.verified < currentStack.owners.getThreshold()) {
if (stack.length == 0) {
throw new SignatureError("Not enough signatures");
}
// We recover to previous state
addrVerified = currentStack.addrVerifiedTotal;
sigIdxs.splice(addrVerified);
}
else if (stack.length > 0) {
currentStack = stack[stack.length - 1];
if (currentStack.verified < currentStack.owners.getThreshold()) {
// apply child verification
currentStack.verified++;
}
}
}
this.sigIdxs.push(sigIdxs);
}
constructor(hrp, chainID, signedBytes, credTypeID, txOwners, msigAliases) {
super();
this.hrp = hrp;
this.chainID = chainID;
this.signedBytes = buffer_1.Buffer.from(signedBytes);
(this.credTypeID = credTypeID), (this.txOwners = txOwners !== null && txOwners !== void 0 ? txOwners : []);
this.msigAliases = msigAliases !== null && msigAliases !== void 0 ? msigAliases : new Map();
}
}
exports.MultisigKeyChain = MultisigKeyChain;
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* @packageDocumentation\n * @module Common-MultisigKeyChain\n */\n\nimport { Buffer } from \"buffer/\"\nimport {\n  Credential,\n  OutputOwners,\n  SECPMultisigCredential,\n  SigIdx,\n  Signature\n} from \".\"\n\nimport { Serialization, SerializedType } from \"../utils\"\nimport BinTools from \"../utils/bintools\"\nimport { StandardKeyChain, StandardKeyPair } from \"./keychain\"\nimport { SECP256k1KeyPair } from \"./secp256k1\"\n\nexport class SignatureError extends Error {}\nconst NotImplemented = new Error(\"not implemented in MultiSig KeyPair\")\nconst TooManySignatures = new SignatureError(\"too many signatures\")\n\nconst serialization: Serialization = Serialization.getInstance()\nconst bintools: BinTools = BinTools.getInstance()\nconst MaxSignatures = 256\n\n/**\n * Class for representing a generic multi signature key.\n */\nexport class MultisigKeyPair extends StandardKeyPair {\n  // The keychain required for address generation\n  protected keyChain: MultisigKeyChain\n\n  generateKey() {\n    throw NotImplemented\n  }\n\n  importKey(_: Buffer): boolean {\n    return false\n  }\n\n  sign(_: Buffer): Buffer {\n    return this.privk\n  }\n\n  recover(msg: Buffer, sig: Buffer): Buffer {\n    throw NotImplemented\n  }\n\n  verify(msg: Buffer, sig: Buffer): boolean {\n    throw NotImplemented\n  }\n\n  getAddress(): Buffer {\n    return this.pubk\n  }\n\n  getAddressString(): string {\n    const addr: Buffer = SECP256k1KeyPair.addressFromPublicKey(this.pubk)\n    const type: SerializedType = \"bech32\"\n    return serialization.bufferToType(\n      addr,\n      type,\n      this.keyChain.getHRP(),\n      this.keyChain.getChainID()\n    )\n  }\n\n  create(...args: any[]): this {\n    if (args.length == 3) {\n      return new MultisigKeyPair(args[0], args[1], args[2]) as this\n    }\n    return new MultisigKeyPair(this.keyChain, this.pubk, this.privk) as this\n  }\n\n  clone(): this {\n    return new MultisigKeyPair(this.keyChain, this.pubk, this.privk) as this\n  }\n\n  getPrivateKeyString(): string {\n    return bintools.cb58Encode(this.privk)\n  }\n\n  getPublicKeyString(): string {\n    return bintools.cb58Encode(this.pubk)\n  }\n\n  constructor(keyChain: MultisigKeyChain, address: Buffer, signature: Buffer) {\n    super()\n    this.keyChain = keyChain\n    this.pubk = Buffer.from(address)\n    this.privk = Buffer.from(signature)\n  }\n}\n\n/**\n * Class for representing a multisig keyChain in Camino.\n *\n * @typeparam MultisigKeyChain Class extending [[StandardKeyChain]]\n */\nexport class MultisigKeyChain extends StandardKeyChain<MultisigKeyPair> {\n  // The HRP required for address generation\n  protected hrp: string\n  // The chain ID required for address generation\n  protected chainID: string\n  // The bytes which are signed by this txID\n  protected signedBytes: Buffer\n  // the OutputOwners of all inputs and Auths inside the message\n  protected txOwners: OutputOwners[]\n  // the multisig aliases which take part in evaluation\n  protected msigAliases: Map<string, OutputOwners>\n  // Credentials for all the txOwners\n  protected sigIdxs: SigIdx[][]\n  // The CredentialID used for SECPMultisigCredential\n  protected credTypeID: number\n\n  getHRP(): string {\n    return this.hrp\n  }\n\n  getChainID(): string {\n    return this.chainID\n  }\n\n  create(...args: any[]): this {\n    if (args.length == 4) {\n      return new MultisigKeyChain(args[0], args[1], args[2], args[4]) as this\n    }\n    return new MultisigKeyChain(\n      this.hrp,\n      this.chainID,\n      this.signedBytes,\n      this.credTypeID\n    ) as this\n  }\n\n  clone(): this {\n    const newkc = new MultisigKeyChain(\n      this.hrp,\n      this.chainID,\n      this.signedBytes,\n      this.credTypeID\n    ) as this\n    for (let k in this.keys) {\n      newkc.addKey(this.keys[`${k}`].clone())\n    }\n    newkc.txOwners = new Array(this.txOwners.length)\n    this.txOwners.forEach((txo, index) =>\n      newkc.txOwners[index].fromBuffer(txo.toBuffer())\n    )\n    return newkc\n  }\n\n  union(kc: this): this {\n    if (\n      kc.chainID !== this.chainID ||\n      kc.hrp != this.hrp ||\n      kc.signedBytes.compare(this.signedBytes) != 0\n    ) {\n      throw new Error(\"keychains do not match\")\n    }\n    const newkc = kc.clone()\n    Object.assign(newkc.keys, kc.keys)\n\n    return newkc\n  }\n\n  // Visit every txOutputOwner and try to verify with keys.\n  // Traverse into msig aliases. Throw if one cannot be fulfilled\n  buildSignatureIndices() {\n    this.sigIdxs = []\n    for (const o of this.txOwners) this._traverseOwner(o)\n  }\n\n  getCredentials(): Credential[] {\n    const result: SECPMultisigCredential[] = []\n    for (const sigSet of this.sigIdxs) {\n      const cred = new SECPMultisigCredential(this.credTypeID)\n      for (const sigIdx of sigSet) {\n        cred.addSSignatureIndex(sigIdx)\n        const sig = new Signature()\n        sig.fromBuffer(this.getKey(sigIdx.getSource()).getPrivateKey())\n        cred.addSignature(sig)\n      }\n      result.push(cred)\n    }\n    return result\n  }\n\n  protected _traverseOwner(owner: OutputOwners): void {\n    var addrVisited = 0\n    var addrVerified = 0\n\n    type stackItem = {\n      index: number\n      verified: number\n      addrVerifiedTotal: number\n      parentVerified: boolean\n      owners: OutputOwners\n    }\n\n    const cycleCheck = new Set<string>()\n    const stack: stackItem[] = [\n      {\n        index: 0,\n        verified: 0,\n        addrVerifiedTotal: 0,\n        parentVerified: false,\n        owners: owner\n      }\n    ]\n\n    const sigIdxs: SigIdx[] = []\n    const helper = Buffer.alloc(4)\n\n    Stack: while (stack.length > 0) {\n      // get head\n      var currentStack = stack[stack.length - 1]\n      while (currentStack.index < currentStack.owners.getAddressesLength()) {\n        // get the next address to check\n        const addr = currentStack.owners.getAddress(currentStack.index)\n        const addrStr = addr.toString(\"hex\")\n        currentStack.index++\n        // Is it a multi-sig address ?\n        const alias = this.msigAliases.get(addrStr)\n        if (alias !== undefined) {\n          if (stack.length > MaxSignatures) {\n            throw TooManySignatures\n          }\n          if (cycleCheck.has(addrStr)) {\n            throw new Error(\"Cyclic multisig alias\")\n          }\n          cycleCheck.add(addrStr)\n          stack.push({\n            index: 0,\n            verified: 0,\n            addrVerifiedTotal: addrVerified,\n            parentVerified:\n              currentStack.parentVerified ||\n              currentStack.verified >= currentStack.owners.getThreshold(),\n            owners: alias\n          })\n          continue Stack\n        } else {\n          if (\n            !currentStack.parentVerified &&\n            currentStack.verified < currentStack.owners.getThreshold()\n          ) {\n            if (this.hasKey(addr)) {\n              if (addrVisited > MaxSignatures) {\n                throw TooManySignatures\n              }\n\n              const sigIdx = new SigIdx()\n              sigIdx.setSource(addr)\n              helper.writeUIntBE(addrVisited, 0, 4)\n              sigIdx.fromBuffer(helper)\n              sigIdxs.push(sigIdx)\n\n              currentStack.verified++\n              addrVerified++\n            }\n          }\n          addrVisited++\n        }\n      }\n\n      // remove head\n      stack.pop()\n      // verify current level\n      if (currentStack.verified < currentStack.owners.getThreshold()) {\n        if (stack.length == 0) {\n          throw new SignatureError(\"Not enough signatures\")\n        }\n        // We recover to previous state\n        addrVerified = currentStack.addrVerifiedTotal\n        sigIdxs.splice(addrVerified)\n      } else if (stack.length > 0) {\n        currentStack = stack[stack.length - 1]\n        if (currentStack.verified < currentStack.owners.getThreshold()) {\n          // apply child verification\n          currentStack.verified++\n        }\n      }\n    }\n\n    this.sigIdxs.push(sigIdxs)\n  }\n\n  constructor(\n    hrp: string,\n    chainID: string,\n    signedBytes: Buffer,\n    credTypeID: number,\n    txOwners?: OutputOwners[],\n    msigAliases?: Map<string, OutputOwners>\n  ) {\n    super()\n    this.hrp = hrp\n    this.chainID = chainID\n    this.signedBytes = Buffer.from(signedBytes)\n    ;(this.credTypeID = credTypeID), (this.txOwners = txOwners ?? [])\n    this.msigAliases = msigAliases ?? new Map<string, OutputOwners>()\n  }\n}\n"]}