import type { SigningProvider } from '../core/signing-provider.js';
export interface AwsKmsSigningProviderConfig {
    provider: 'aws-kms';
    keyId: string;
    region: string;
}
export type SigningProviderConfig = AwsKmsSigningProviderConfig;
/**
 * Factory function to create a SigningProvider from config.
 * Currently supports 'aws-kms'. Extensible for future providers.
 */
export declare function createSigningProvider(config: SigningProviderConfig): SigningProvider;