import { type LogService } from './log.js';
export declare const DEFAULT_SYMMETRIC_ENCRYPTION_SECRET_ENV_NAME: "SYMMETRIC_ENCRYPTION_SECRET";
export declare const DEFAULT_SYMMETRIC_ENCRYPTION_OPTIONS: {
    readonly algorithm: "aes-256-cbc";
    readonly ivEncoding: "hex";
    readonly secretEncoding: "hex";
};
export type SymmetricEncryptionEnvVars<T extends string = typeof DEFAULT_SYMMETRIC_ENCRYPTION_SECRET_ENV_NAME> = Partial<Record<T, string>>;
export interface SymmetricEncryptionOptions {
    algorithm: string;
    secretEncoding: 'hex' | 'base64';
    ivEncoding: 'hex' | 'base64';
}
export interface SymmetricEncryptionConfig<T extends string = typeof DEFAULT_SYMMETRIC_ENCRYPTION_SECRET_ENV_NAME> {
    SYMMETRIC_ENCRYPTION_OPTIONS?: SymmetricEncryptionOptions;
    SYMMETRIC_ENCRYPTION_SECRET_ENV_NAME?: T;
}
export type SymmetricEncryptionDependencies<T extends string = typeof DEFAULT_SYMMETRIC_ENCRYPTION_SECRET_ENV_NAME> = SymmetricEncryptionConfig<T> & {
    ENV: SymmetricEncryptionEnvVars<T>;
    log?: LogService;
};
export interface SymmetricEncryptionService {
    encrypt: (encodedIV: string, data: string) => Promise<string>;
    decrypt: (encodedIV: string, token: string) => Promise<string>;
}
declare const _default: import("knifecycle").ServiceInitializer<SymmetricEncryptionDependencies<string>, SymmetricEncryptionService>;
export default _default;