import { JWTClaims, JWTGenerationOptions, JWTValidationResult } from '../types/jwt';
export declare class JWTAuthManager {
    /**
     * Base64URL encode a buffer
     */
    private base64urlEncode;
    /**
     * Base64URL decode a string
     */
    private base64urlDecode;
    /**
     * Generate a JWT token for Akash Network authentication
     * Uses ES256K (secp256k1) signature algorithm compatible with Cosmos SDK
     */
    generateToken(options: JWTGenerationOptions): Promise<string>;
    /**
     * Validate a JWT token using ES256K signature
     */
    validateToken(token: string, publicKey: string): Promise<JWTValidationResult>;
    /**
     * Decode a JWT token without validation (for inspection)
     */
    decodeToken(token: string): JWTClaims | null;
    /**
     * Check if a token has expired
     */
    isTokenExpired(token: string): boolean;
    /**
     * Get token expiration time in seconds
     */
    getTokenExpiration(token: string): number | null;
    /**
     * Create authorization header value for HTTP requests
     */
    createAuthHeader(token: string): string;
    /**
     * Extract token from authorization header
     */
    extractTokenFromHeader(authHeader: string): string | null;
    /**
     * Generate a secp256k1 keypair for testing/development
     */
    generateKeyPair(): {
        privateKey: string;
        publicKey: string;
    };
}
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