import { SymmetricAesGcmKmsProvider } from "./kms-symmetric.js";
export interface EnvKmsConfig {
    /** Base64-encoded 32-byte master key. */
    key: string;
}
export declare function generateEnvKmsKey(): string;
export declare class EnvKmsProvider extends SymmetricAesGcmKmsProvider {
    readonly name: "env";
    protected readonly prefix = "env:v1:";
    protected readonly label = "EnvKmsProvider";
    constructor(config: EnvKmsConfig);
}
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