import { EncryptedFileContent } from './types';
export default class CryptoBase {
    /**
     * Generates a new keypair for encryption.
     * @returns The generated keypair.
     */
    generate: () => import("./types").Keypair;
    /**
     * Encrypt given binary file with a unique keypair for each submission.
     * @param binary The file to encrypt, should be a blob that is converted to Uint8Array binary
     * @param publicKey The base-64 encoded public key
     * @returns Promise holding the encrypted file
     * @throws error if any of the encrypt methods fail
     */
    encryptFile: (binary: Uint8Array, publicKey: string) => Promise<EncryptedFileContent>;
    /**
     * Decrypt the given encrypted file content.
     * @param secretKey Secret key as a base-64 string
     * @param encrypted Object returned from encryptFile function
     * @param encrypted.submissionPublicKey The file's public key as a base-64 string
     * @param encrypted.nonce The nonce as a base-64 string
     * @param encrypted.blob The encrypted file as a Blob object
     */
    decryptFile: (secretKey: string, { submissionPublicKey: filePublicKey, nonce, binary: encryptedBinary, }: EncryptedFileContent) => Promise<Uint8Array | null>;
}