/**
 * JWT Algorithm types and constants
 */
export type JWTAlgorithm = 'HS256' | 'HS384' | 'HS512' | 'RS256' | 'RS384' | 'RS512' | 'ES256' | 'ES384' | 'ES512' | 'PS256' | 'PS384' | 'PS512';
/**
 * Supported JWT signing algorithms
 */
export declare const JWT_ALGORITHMS: {
    readonly HS256: "HS256";
    readonly HS384: "HS384";
    readonly HS512: "HS512";
    readonly RS256: "RS256";
    readonly RS384: "RS384";
    readonly RS512: "RS512";
    readonly ES256: "ES256";
    readonly ES384: "ES384";
    readonly ES512: "ES512";
    readonly PS256: "PS256";
    readonly PS384: "PS384";
    readonly PS512: "PS512";
};
/**
 * Check if algorithm requires asymmetric keys
 */
export declare function isAsymmetricAlgorithm(algorithm: JWTAlgorithm): boolean;
/**
 * Check if algorithm is ECDSA (Elliptic Curve)
 */
export declare function isECDSAAlgorithm(algorithm: JWTAlgorithm): boolean;
/**
 * Check if algorithm is RSA
 */
export declare function isRSAAlgorithm(algorithm: JWTAlgorithm): boolean;
/**
 * Check if algorithm is HMAC (symmetric)
 */
export declare function isHMACAlgorithm(algorithm: JWTAlgorithm): boolean;
/**
 * Default algorithms for different key types
 */
export declare const DEFAULT_ALGORITHMS: {
    readonly SYMMETRIC: "HS256";
    readonly ASYMMETRIC_RSA: "RS256";
    readonly ASYMMETRIC_ECDSA: "ES256";
};