import type { CryptoContext, EncryptionPolicyResolver } from "../types.js";
/**
 * Database-agnostic policy data structure
 */
export interface PolicyData {
    encryptionAlgorithm: string | null;
    keyRotationIntervalDays: number | null;
    streamTypeClass: string;
    keyScope: string | null;
}
/**
 * Database-agnostic interface for policy storage operations.
 */
export interface PolicyStorage {
    findPolicy(params: {
        partition: string;
        streamType: string | null;
    }): Promise<PolicyData | null>;
}
/**
 * Type for key scope configuration
 */
export type KeyScope = "stream" | "type" | "partition";
/**
 * Database-agnostic EncryptionPolicyResolver implementation.
 */
export declare function createPolicyResolver(storage: PolicyStorage, onError?: (error: unknown, ctx: CryptoContext) => void): EncryptionPolicyResolver;
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