/*!
 * Copyright (c) 2022 Digital Credentials Consortium. (Conversion to Typescript)
 * Copyright (c) 2022 Digital Bazaar, Inc. All rights reserved.
 */
/**
 * Asserts that key bytes have a type of Uint8Array and a specific length.
 *
 * @throws {TypeError|SyntaxError} - Throws a Type or Syntax error.
 *
 * @param {object} options - Options to use.
 * @param {Uint8Array} options.bytes - The bytes being checked.
 * @param {number} [options.expectedLength=32] - The expected bytes length.
 * @param {string} [options.code] - An optional code for the error.
 *
 * @returns {undefined} Returns on success throws on error.
 */
export declare function assertKeyBytes({ bytes, expectedLength, code }: {
    bytes: Uint8Array;
    expectedLength: number;
    code?: string;
}): void;
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