import type { RequestContext, SignatureOperations } from '../../interfaces/core.js';
import type { SignatureRequest, SignatureResult, VerificationRequest } from '../../types.js';
/**
 * Local signing/verification implementation
 * Single responsibility: manage signing and verification operations
 * Does NOT handle encryption, key management, or policy enforcement
 */
export declare class LocalSignatureOperations implements SignatureOperations {
    private readonly defaultKeyId;
    private readonly keys;
    private readonly registry;
    constructor(defaultKeyId: string);
    sign(request: SignatureRequest & RequestContext): Promise<SignatureResult>;
    verify(request: VerificationRequest & {
        publicKey?: Uint8Array;
    } & RequestContext): Promise<boolean>;
    hasSigningKey(keyId: string): boolean;
    setSigningKey(keyId: string, key: Buffer): void;
    getSigningKey(keyId: string): Buffer | undefined;
}
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