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

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

// 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");
  }
};
export {
  check_iv_length_default as default
};