import { AuthHeaderOptions } from './types.js';
export declare class RsaV3Util {
    static formatDate(date: Date, fmt: string): string;
    /**
     * Gets authentication headers for API requests
     * @param options - Options for generating auth headers
     * @returns Authentication headers
     */
    static getAuthHeaders(options: AuthHeaderOptions): Record<string, string>;
    /**
     * Builds the canonical header string and the list of signed header names.
     * Includes 'content-type' (if present) and all 'x-yop-*' headers.
     * @param headersToSign - Headers potentially included in the signature.
     * @returns An object containing the canonical header string and the signed headers string.
     */
    static buildCanonicalHeaders(headersToSign: Record<string, string>): {
        canonicalHeaderString: string;
        signedHeadersString: string;
    };
    /**
     * Gets canonical query string for API requests
     * @param params - Request parameters
     * @param method - HTTP method
     * @returns Canonical query string
     */
    static getCanonicalQueryString(params: Record<string, unknown>, method: string): string;
    /**
     * Gets canonical headers for API requests
     * @param headers - Request headers
     * @returns Canonical headers string
     */
    /**
     * Generates a UUID
     * @returns UUID string
     */
    static uuid(): string;
    /**
     * Gets canonical parameters string
     * @param params - Request parameters
     * @returns Canonical parameters string
     */
    static getCanonicalParams(params?: Record<string, unknown>): string;
    /**
     * Calculates SHA256 hash and returns hex string
     * @param params - Request parameters
     * @param config - Configuration options
     * @param method - HTTP method
     * @returns SHA256 hash as hex string
     */
    /**
     * 对对象的键进行排序，以确保生成一致的 JSON 字符串
     * @param obj - 要排序的对象
     * @returns 排序后的对象
     */
    private static sortObjectKeys;
    /**
     * Calculates SHA256 hash and returns hex string
     * @param params - Request parameters
     * @param config - Configuration options
     * @param method - HTTP method
     * @returns SHA256 hash as hex string
     */
    static getSha256AndHexStr(params: Record<string, unknown>, config: {
        contentType: string;
    }, method: string): string;
    /**
     * Signs a canonical request string using RSA-SHA256
     * @param canonicalRequest - The canonical request string to sign
     * @param appPrivateKey - The private key to sign with (PEM format or raw)
     * @returns Base64 URL-safe signature with $SHA256 suffix
     */
    static sign(canonicalRequest: string, appPrivateKey: string): string;
    /**
     * Formats a raw private key string into PEM format
     * @param rawKey - The raw private key string
     * @returns Formatted PEM private key
     */
    private static formatPrivateKey;
}
export default RsaV3Util;