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Текущая директория: /opt/BitGoJS/modules/sdk-hmac/dist/src
Просмотр файла: hmac.js
"use strict";
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o["default"] = v;
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var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
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return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.calculateHMAC = calculateHMAC;
exports.calculateHMACSubject = calculateHMACSubject;
exports.calculateRequestHMAC = calculateRequestHMAC;
exports.calculateRequestHeaders = calculateRequestHeaders;
exports.verifyResponse = verifyResponse;
const crypto_1 = require("crypto");
const urlLib = __importStar(require("url"));
const sjcl = __importStar(require("@bitgo/sjcl"));
/**
* Calculate the HMAC for the given key and message
* @param key {String} - the key to use for the HMAC
* @param message {String} - the actual message to HMAC
* @returns {*} - the result of the HMAC operation
*/
function calculateHMAC(key, message) {
return (0, crypto_1.createHmac)('sha256', key).update(message).digest('hex');
}
/**
* Calculate the subject string that is to be HMAC'ed for a HTTP request or response
* @param urlPath request url, including query params
* @param text request body text
* @param timestamp request timestamp from `Date.now()`
* @param statusCode Only set for HTTP responses, leave blank for requests
* @param method request method
* @returns {string}
*/
function calculateHMACSubject({ urlPath, text, timestamp, statusCode, method, authVersion, }) {
const urlDetails = urlLib.parse(urlPath);
const queryPath = urlDetails.query && urlDetails.query.length > 0 ? urlDetails.path : urlDetails.pathname;
if (statusCode !== undefined && isFinite(statusCode) && Number.isInteger(statusCode)) {
if (authVersion === 3) {
return [method.toUpperCase(), timestamp, queryPath, statusCode, text].join('|');
}
return [timestamp, queryPath, statusCode, text].join('|');
}
if (authVersion === 3) {
return [method.toUpperCase(), timestamp, '3.0', queryPath, text].join('|');
}
return [timestamp, queryPath, text].join('|');
}
/**
* Calculate the HMAC for an HTTP request
*/
function calculateRequestHMAC({ url: urlPath, text, timestamp, token, method, authVersion, }) {
const signatureSubject = calculateHMACSubject({ urlPath, text, timestamp, method, authVersion });
// calculate the HMAC
return calculateHMAC(token, signatureSubject);
}
/**
* Calculate request headers with HMAC
*/
function calculateRequestHeaders({ url, text, token, method, authVersion, }) {
const timestamp = Date.now();
const hmac = calculateRequestHMAC({ url, text, timestamp, token, method, authVersion });
// calculate the SHA256 hash of the token
const hashDigest = sjcl.hash.sha256.hash(token);
const tokenHash = sjcl.codec.hex.fromBits(hashDigest);
return {
hmac,
timestamp,
tokenHash,
};
}
/**
* Verify the HMAC for an HTTP response
*/
function verifyResponse({ url: urlPath, statusCode, text, timestamp, token, hmac, method, authVersion, }) {
const signatureSubject = calculateHMACSubject({
urlPath,
text,
timestamp,
statusCode,
method,
authVersion,
});
// calculate the HMAC
const expectedHmac = calculateHMAC(token, signatureSubject);
// determine if the response is still within the validity window (5 minute window)
const now = Date.now();
const isInResponseValidityWindow = timestamp >= now - 1000 * 60 * 5 && timestamp <= now;
// verify the HMAC and timestamp
return {
isValid: expectedHmac === hmac,
expectedHmac,
signatureSubject,
isInResponseValidityWindow,
verificationTime: now,
};
}
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urlDetails.path : urlDetails.pathname;\n  if (statusCode !== undefined && isFinite(statusCode) && Number.isInteger(statusCode)) {\n    if (authVersion === 3) {\n      return [method.toUpperCase(), timestamp, queryPath, statusCode, text].join('|');\n    }\n    return [timestamp, queryPath, statusCode, text].join('|');\n  }\n  if (authVersion === 3) {\n    return [method.toUpperCase(), timestamp, '3.0', queryPath, text].join('|');\n  }\n  return [timestamp, queryPath, text].join('|');\n}\n\n/**\n * Calculate the HMAC for an HTTP request\n */\nexport function calculateRequestHMAC({\n  url: urlPath,\n  text,\n  timestamp,\n  token,\n  method,\n  authVersion,\n}: CalculateRequestHmacOptions): string {\n  const signatureSubject = calculateHMACSubject({ urlPath, text, timestamp, method, authVersion });\n\n  // calculate the HMAC\n  return calculateHMAC(token, signatureSubject);\n}\n\n/**\n * Calculate request headers with HMAC\n */\nexport function calculateRequestHeaders({\n  url,\n  text,\n  token,\n  method,\n  authVersion,\n}: CalculateRequestHeadersOptions): RequestHeaders {\n  const timestamp = Date.now();\n  const hmac = calculateRequestHMAC({ url, text, timestamp, token, method, authVersion });\n\n  // calculate the SHA256 hash of the token\n  const hashDigest = sjcl.hash.sha256.hash(token);\n  const tokenHash = sjcl.codec.hex.fromBits(hashDigest);\n  return {\n    hmac,\n    timestamp,\n    tokenHash,\n  };\n}\n\n/**\n * Verify the HMAC for an HTTP response\n */\nexport function verifyResponse({\n  url: urlPath,\n  statusCode,\n  text,\n  timestamp,\n  token,\n  hmac,\n  method,\n  authVersion,\n}: VerifyResponseOptions): VerifyResponseInfo {\n  const signatureSubject = calculateHMACSubject({\n    urlPath,\n    text,\n    timestamp,\n    statusCode,\n    method,\n    authVersion,\n  });\n\n  // calculate the HMAC\n  const expectedHmac = calculateHMAC(token, signatureSubject);\n\n  // determine if the response is still within the validity window (5 minute window)\n  const now = Date.now();\n  const isInResponseValidityWindow = timestamp >= now - 1000 * 60 * 5 && timestamp <= now;\n\n  // verify the HMAC and timestamp\n  return {\n    isValid: expectedHmac === hmac,\n    expectedHmac,\n    signatureSubject,\n    isInResponseValidityWindow,\n    verificationTime: now,\n  };\n}\n"]}Выполнить команду
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