export declare function bytesToBase64(bytes: Uint8Array): string;
export declare function bytesToHex(bytes: Uint8Array): string;
export declare function hexToBytes(hex: string): Uint8Array;
export declare function encryptPrivateKey(privateKey: Uint8Array, secret: string): Promise<{
    encrypted: string;
    iv: string;
}>;
export declare function decryptPrivateKey(encrypted: string, iv: string, secret: string): Promise<Uint8Array>;
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