import * as _phantom_sdk_types from '@phantom/sdk-types';
import { Stamper } from '@phantom/sdk-types';
import { Buffer } from 'buffer';

interface ApiKeyStamperConfig {
    apiSecretKey: string;
}
/**
 * Simple stamper that takes a pre-existing secret key and creates stamps
 * Does not manage keys - just signs with the provided secret key
 */
declare class ApiKeyStamper implements Stamper {
    readonly algorithm: _phantom_sdk_types.Algorithm;
    type: "PKI" | "OIDC";
    idToken?: string;
    salt?: string;
    private keypair;
    constructor(config: ApiKeyStamperConfig);
    /**
     * Create X-Phantom-Stamp header value
     * @param params - Parameters object with data to sign
     * @returns Complete X-Phantom-Stamp header value
     */
    stamp(params: {
        data: Buffer;
        type?: "PKI";
        idToken?: never;
        salt?: never;
    } | {
        data: Buffer;
        type: "OIDC";
        idToken: string;
        salt: string;
    }): Promise<string>;
}

export { ApiKeyStamper, ApiKeyStamperConfig };