import { KeyLike } from 'jose';
import { COSEBase } from './COSEBase.js';
import { EncryptionAlgorithms, SupportedEncryptionAlgorithms, EncryptProtectedHeaders, UnprotectedHeaders } from '../headers.js';
export type DecryptOptions = {
    externalAAD?: Uint8Array;
    detachedPayload?: Uint8Array;
    algorithms?: EncryptionAlgorithms[];
};
/**
 * Decoded COSE_Encrypt0 structure.
 */
export declare class Encrypt0 extends COSEBase {
    readonly ciphertext: Uint8Array;
    constructor(protectedHeaders: Map<number, unknown> | Uint8Array, unprotectedHeaders: Map<number, unknown>, ciphertext: Uint8Array);
    /**
     * Create the COSE_Encrypt0 structure for Aditional authenticated data.
     *
     * @param protectedHeaders
     * @param applicationHeaders
     * @param ciphertext
     * @returns
     */
    private static createEncrypt0AAD;
    getContentForEncoding(): (Uint8Array | Map<number, unknown> | undefined)[];
    /**
     *
     * Decode a COSE_Encrypt0 structure from a buffer.
     *
     * @param cose {Uint8Array} - The buffer containing the Cose Encrypt0 tagged or untagged message.
     * @returns {Encrypt0} - The decoded COSE_Encrypt0 structure.
     */
    static decode(cose: Uint8Array): Encrypt0;
    /**
     * Decrypt and verify the instance using the given key.
     *
     * @param {KeyLike | Uint8Array} key - The key to verify the signature with.
     * @param {VerifyOptions} [options] - Decrypt options.
     * @param {EncryptionAlgorithms[]} [options.algorithms] - List of allowed algorithms
     * @param {Uint8Array} [options.externalAAD] - External Additional Associated Data
     * @param {Uint8Array} [options.detachedPayload] - The detached payload to verify the signature with.
     * @returns {Boolean} - The result of the signature verification.
     */
    decrypt(key: KeyLike | Uint8Array, options?: DecryptOptions): Promise<Uint8Array>;
    get alg(): EncryptionAlgorithms | undefined;
    get algName(): SupportedEncryptionAlgorithms | undefined;
    hasSupportedAlg(): boolean;
    /**
     *
     * Create and encrypt a COSE_Encrypt0 message.
     *
     * @param protectedHeaders {EncryptProtectedHeaders | ConstructorParameters<typeof EncryptProtectedHeaders>[0]} - The protected headers
     * @param unprotectedHeaders {UnprotectedHeaders | ConstructorParameters<typeof UnprotectedHeaders>[0] | undefined} - The unprotected headers
     * @param content {Uint8Array} - The content to encrypt
     * @param key {KeyLike | Uint8Array} - The key to use to encrypt the content
     * @param [externalAAD] {Uint8Array} - External Additional Associated Data
     * @returns {Promise<Encrypt0>}
     */
    static encrypt(protectedHeaders: EncryptProtectedHeaders | ConstructorParameters<typeof EncryptProtectedHeaders>[0], unprotectedHeaders: UnprotectedHeaders | ConstructorParameters<typeof UnprotectedHeaders>[0] | undefined, content: Uint8Array, key: KeyLike | Uint8Array, externalAAD?: Uint8Array): Promise<Encrypt0>;
    static tag: number;
}