export declare const SYMMETRIC_VERSION = 1;
export declare const ECIES_VERSION = 2;
export declare const SYMMETRIC_HEADER_SIZE = 17;
export declare const EPHEMERAL_PUBKEY_SIZE = 33;
export declare const ECIES_HEADER_SIZE: number;
export declare class EncryptionHeader {
    version: number;
    nonce: Uint8Array;
    ephemeralPub: Uint8Array;
    constructor(version: number, nonce: Uint8Array, ephemeralPub?: Uint8Array);
    size(): number;
    toBytes(): Uint8Array;
}
export declare function parseEncryptionHeader(data: Uint8Array): EncryptionHeader;
export declare function cryptAt(key: Uint8Array, nonce: Uint8Array, offset: number, data: Uint8Array): void;
export declare function normalizePubKey(input: Uint8Array | string): Uint8Array;
export declare function normalizePrivKey(input: Uint8Array | string): Uint8Array;
export declare function deriveEciesEncryptKey(recipientPub: Uint8Array | string): {
    key: Uint8Array;
    ephemeralPub: Uint8Array;
};
export declare function deriveEciesDecryptKey(recipientPriv: Uint8Array | string, ephemeralPub: Uint8Array): Uint8Array;
export declare function newSymmetricHeader(): EncryptionHeader;
export declare function newEciesHeader(recipientPub: Uint8Array | string): {
    header: EncryptionHeader;
    key: Uint8Array;
};
export declare function decryptFile(key: Uint8Array, encrypted: Uint8Array): Uint8Array;
export declare function decryptFragmentData(key: Uint8Array, header: EncryptionHeader, fragmentData: Uint8Array, isFirstFragment: boolean, dataOffset: number): {
    plaintext: Uint8Array;
    newOffset: number;
};
export declare function resolveDecryptionKey(symmetricKey: Uint8Array | undefined, privateKey: Uint8Array | string | undefined, header: EncryptionHeader): Uint8Array;
//# sourceMappingURL=encryption.d.ts.map