/**
 * Represents a class that applies a hash function to data.
 *
 */
export declare class EciesSalsaSealBox {
    X25519_PRIVATE_KEY_LENGTH: number;
    static generateKeyPair(): [Uint8Array, Uint8Array];
    /**
     * The function encrypts a plaintext message using the ECIES-Salsa20 encryption
     * algorithm with a given public key and authenticated data.
     * @param {string | Uint8Array} plaintext - The `plaintext` parameter is the
     * message that you want to encrypt. It can be either a string or a Uint8Array
     * (an array of bytes).
     * @param {Uint8Array} publicKey - The `publicKey` parameter is a Uint8Array that
     * represents the public key used for encryption. It is typically generated using
     * a cryptographic algorithm and is used to encrypt the plaintext data.
     * @param {string | Uint8Array} authenticatedData - The `authenticatedData`
     * parameter is additional data that is included in the encryption process but is
     * not encrypted. It is used to provide integrity and authenticity to the
     * encrypted message. This data can be any string or binary data that you want to
     * include with the encrypted message.
     * @returns a Uint8Array.
     */
    static encrypt(plaintext: string | Uint8Array, publicKey: Uint8Array, authenticatedData: string | Uint8Array): Uint8Array;
    /**
     * The function decrypts a ciphertext using a private key and authenticated data.
     * @param {string | Uint8Array} ciphertext - The `ciphertext` parameter is the
     * encrypted data that you want to decrypt. It can be either a string or a
     * Uint8Array, which represents the encrypted data in either text or binary
     * format.
     * @param {Uint8Array} privateKey - The `privateKey` parameter is a Uint8Array
     * that represents the private key used for decryption. It is a binary
     * representation of the private key.
     * @param {string | Uint8Array} authenticatedData - The `authenticatedData`
     * parameter is additional data that is used for authentication but is not
     * encrypted. It can be any string or binary data that you want to include for
     * authentication purposes.
     * @returns a Uint8Array.
     */
    static decrypt(ciphertext: string | Uint8Array, privateKey: Uint8Array, authenticatedData: string | Uint8Array): Uint8Array;
}
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