@gaonengwww/jose/dist/webapi/lib/check_iv_length.cjs

JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/lib/check_iv_length.ts
var check_iv_length_exports = {};
__export(check_iv_length_exports, {
  default: () => check_iv_length_default
});
module.exports = __toCommonJS(check_iv_length_exports);

// src/util/errors.ts
var JOSEError = class extends Error {
  /**
   * A unique error code for the particular error subclass.
   *
   * @ignore
   */
  static code = "ERR_JOSE_GENERIC";
  /** A unique error code for {@link JOSEError}. */
  code = "ERR_JOSE_GENERIC";
  /** @ignore */
  constructor(message, options) {
    super(message, options);
    this.name = this.constructor.name;
    Error.captureStackTrace?.(this, this.constructor);
  }
};
var JOSENotSupported = class extends JOSEError {
  /** @ignore */
  static code = "ERR_JOSE_NOT_SUPPORTED";
  /** A unique error code for {@link JOSENotSupported}. */
  code = "ERR_JOSE_NOT_SUPPORTED";
};
var JWEInvalid = class extends JOSEError {
  /** @ignore */
  static code = "ERR_JWE_INVALID";
  /** A unique error code for {@link JWEInvalid}. */
  code = "ERR_JWE_INVALID";
};

// src/lib/iv.ts
function bitLength(alg) {
  switch (alg) {
    case "A128GCM":
    case "A128GCMKW":
    case "A192GCM":
    case "A192GCMKW":
    case "A256GCM":
    case "A256GCMKW":
      return 96;
    case "A128CBC-HS256":
    case "A192CBC-HS384":
    case "A256CBC-HS512":
      return 128;
    default:
      throw new JOSENotSupported(`Unsupported JWE Algorithm: ${alg}`);
  }
}

// src/lib/check_iv_length.ts
var check_iv_length_default = (enc, iv) => {
  if (iv.length << 3 !== bitLength(enc)) {
    throw new JWEInvalid("Invalid Initialization Vector length");
  }
};