import type { KeyRef, KmsDataKey, KmsProvider, KmsUnwrappedDataKey } from "./kms.js";
export interface VoyantCloudKmsConfig {
    apiKey: string;
    vaultSlug: string;
    apiUrl?: string;
}
export declare class VoyantCloudKmsProvider implements KmsProvider {
    private readonly config;
    readonly name: "voyant-cloud";
    private readonly apiUrl;
    constructor(config: VoyantCloudKmsConfig);
    private endpoint;
    private post;
    encrypt(plaintext: string, _key: KeyRef): Promise<string>;
    decrypt(ciphertext: string, _key: KeyRef): Promise<string>;
    generateDataKey(_key: KeyRef): Promise<KmsDataKey>;
    unwrap(_key: KeyRef, wrappedDek: string): Promise<KmsUnwrappedDataKey>;
}
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