/**
 * The `tls` module provides an implementation of the Transport Layer Security
 * (TLS) and Secure Socket Layer (SSL) protocols that is built on top of OpenSSL.
 * The module can be accessed using:
 *
 * ```js
 * const tls = require('tls');
 * ```
 * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/tls.js)
 */
declare module "tls" {
  import { X509Certificate } from "node:crypto";
  import * as net from "node:net";
  import * as stream from "stream";
  const CLIENT_RENEG_LIMIT: number;
  const CLIENT_RENEG_WINDOW: number;
  interface Certificate {
    /**
     * Country code.
     */
    C: string;
    /**
     * Street.
     */
    ST: string;
    /**
     * Locality.
     */
    L: string;
    /**
     * Organization.
     */
    O: string;
    /**
     * Organizational unit.
     */
    OU: string;
    /**
     * Common name.
     */
    CN: string;
  }
  interface PeerCertificate {
    /**
     * `true` if a Certificate Authority (CA), `false` otherwise.
     * @since v18.13.0
     */
    ca: boolean;
    /**
     * The DER encoded X.509 certificate data.
     */
    raw: Buffer;
    /**
     * The certificate subject.
     */
    subject: Certificate;
    /**
     * The certificate issuer, described in the same terms as the `subject`.
     */
    issuer: Certificate;
    /**
     * The date-time the certificate is valid from.
     */
    valid_from: string;
    /**
     * The date-time the certificate is valid to.
     */
    valid_to: string;
    /**
     * The certificate serial number, as a hex string.
     */
    serialNumber: string;
    /**
     * The SHA-1 digest of the DER encoded certificate.
     * It is returned as a `:` separated hexadecimal string.
     */
    fingerprint: string;
    /**
     * The SHA-256 digest of the DER encoded certificate.
     * It is returned as a `:` separated hexadecimal string.
     */
    fingerprint256: string;
    /**
     * The SHA-512 digest of the DER encoded certificate.
     * It is returned as a `:` separated hexadecimal string.
     */
    fingerprint512: string;
    /**
     * The extended key usage, a set of OIDs.
     */
    ext_key_usage?: string[];
    /**
     * A string containing concatenated names for the subject,
     * an alternative to the `subject` names.
     */
    subjectaltname?: string;
    /**
     * An array describing the AuthorityInfoAccess, used with OCSP.
     */
    infoAccess?: NodeJS.Dict<string[]>;
    /**
     * For RSA keys: The RSA bit size.
     *
     * For EC keys: The key size in bits.
     */
    bits?: number;
    /**
     * The RSA exponent, as a string in hexadecimal number notation.
     */
    exponent?: string;
    /**
     * The RSA modulus, as a hexadecimal string.
     */
    modulus?: string;
    /**
     * The public key.
     */
    pubkey?: Buffer;
    /**
     * The ASN.1 name of the OID of the elliptic curve.
     * Well-known curves are identified by an OID.
     * While it is unusual, it is possible that the curve
     * is identified by its mathematical properties,
     * in which case it will not have an OID.
     */
    asn1Curve?: string;
    /**
     * The NIST name for the elliptic curve,if it has one
     * (not all well-known curves have been assigned names by NIST).
     */
    nistCurve?: string;
  }
  interface DetailedPeerCertificate extends PeerCertificate {
    /**
     * The issuer certificate object.
     * For self-signed certificates, this may be a circular reference.
     */
    issuerCertificate: DetailedPeerCertificate;
  }
  interface CipherNameAndProtocol {
    /**
     * The cipher name.
     */
    name: string;
    /**
     * SSL/TLS protocol version.
     */
    version: string;
    /**
     * IETF name for the cipher suite.
     */
    standardName: string;
  }
  interface EphemeralKeyInfo {
    /**
     * The supported types are 'DH' and 'ECDH'.
     */
    type: string;
    /**
     * The name property is available only when type is 'ECDH'.
     */
    name?: string | undefined;
    /**
     * The size of parameter of an ephemeral key exchange.
     */
    size: number;
  }
  interface KeyObject {
    /**
     * Private keys in PEM format.
     */
    pem: string | Buffer;
    /**
     * Optional passphrase.
     */
    passphrase?: string | undefined;
  }
  interface PxfObject {
    /**
     * PFX or PKCS12 encoded private key and certificate chain.
     */
    buf: string | Buffer;
    /**
     * Optional passphrase.
     */
    passphrase?: string | undefined;
  }
  interface TLSSocketOptions
    extends SecureContextOptions,
      CommonConnectionOptions {
    /**
     * If true the TLS socket will be instantiated in server-mode.
     * Defaults to false.
     */
    isServer?: boolean | undefined;
    /**
     * An optional net.Server instance.
     */
    server?: net.Server | undefined;
    /**
     * An optional Buffer instance containing a TLS session.
     */
    session?: Buffer | undefined;
    /**
     * If true, specifies that the OCSP status request extension will be
     * added to the client hello and an 'OCSPResponse' event will be
     * emitted on the socket before establishing a secure communication
     */
    requestOCSP?: boolean | undefined;
  }
  /**
   * Performs transparent encryption of written data and all required TLS
   * negotiation.
   *
   * Instances of `tls.TLSSocket` implement the duplex `Stream` interface.
   *
   * Methods that return TLS connection metadata (e.g.{@link TLSSocket.getPeerCertificate} will only return data while the
   * connection is open.
   * @since v0.11.4
   */
  class TLSSocket extends net.Socket {
    /**
     * Construct a new tls.TLSSocket object from an existing TCP socket.
     */
    constructor(socket: net.Socket, options?: TLSSocketOptions);
    /**
     * This property is `true` if the peer certificate was signed by one of the CAs
     * specified when creating the `tls.TLSSocket` instance, otherwise `false`.
     * @since v0.11.4
     */
    authorized: boolean;
    /**
     * Returns the reason why the peer's certificate was not been verified. This
     * property is set only when `tlsSocket.authorized === false`.
     * @since v0.11.4
     */
    authorizationError: Error;
    /**
     * Always returns `true`. This may be used to distinguish TLS sockets from regular`net.Socket` instances.
     * @since v0.11.4
     */
    encrypted: true;
    /**
     * String containing the selected ALPN protocol.
     * Before a handshake has completed, this value is always null.
     * When a handshake is completed but not ALPN protocol was selected, tlsSocket.alpnProtocol equals false.
     */
    alpnProtocol: string | false | null;
    /**
     * Returns an object representing the local certificate. The returned object has
     * some properties corresponding to the fields of the certificate.
     *
     * See {@link TLSSocket.getPeerCertificate} for an example of the certificate
     * structure.
     *
     * If there is no local certificate, an empty object will be returned. If the
     * socket has been destroyed, `null` will be returned.
     * @since v11.2.0
     */
    getCertificate(): PeerCertificate | object | null;
    /**
     * Returns an object containing information on the negotiated cipher suite.
     *
     * For example:
     *
     * ```json
     * {
     *     "name": "AES128-SHA256",
     *     "standardName": "TLS_RSA_WITH_AES_128_CBC_SHA256",
     *     "version": "TLSv1.2"
     * }
     * ```
     *
     * See [SSL\_CIPHER\_get\_name](https://www.openssl.org/docs/man1.1.1/man3/SSL_CIPHER_get_name.html) for more information.
     * @since v0.11.4
     */
    getCipher(): CipherNameAndProtocol;
    /**
     * Returns an object representing the type, name, and size of parameter of
     * an ephemeral key exchange in `perfect forward secrecy` on a client
     * connection. It returns an empty object when the key exchange is not
     * ephemeral. As this is only supported on a client socket; `null` is returned
     * if called on a server socket. The supported types are `'DH'` and `'ECDH'`. The`name` property is available only when type is `'ECDH'`.
     *
     * For example: `{ type: 'ECDH', name: 'prime256v1', size: 256 }`.
     * @since v5.0.0
     */
    getEphemeralKeyInfo(): EphemeralKeyInfo | object | null;
    /**
     * As the `Finished` messages are message digests of the complete handshake
     * (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
     * be used for external authentication procedures when the authentication
     * provided by SSL/TLS is not desired or is not enough.
     *
     * Corresponds to the `SSL_get_finished` routine in OpenSSL and may be used
     * to implement the `tls-unique` channel binding from [RFC 5929](https://tools.ietf.org/html/rfc5929).
     * @since v9.9.0
     * @return The latest `Finished` message that has been sent to the socket as part of a SSL/TLS handshake, or `undefined` if no `Finished` message has been sent yet.
     */
    getFinished(): Buffer | undefined;
    /**
     * Returns an object representing the peer's certificate. If the peer does not
     * provide a certificate, an empty object will be returned. If the socket has been
     * destroyed, `null` will be returned.
     *
     * If the full certificate chain was requested, each certificate will include an`issuerCertificate` property containing an object representing its issuer's
     * certificate.
     * @since v0.11.4
     * @param detailed Include the full certificate chain if `true`, otherwise include just the peer's certificate.
     * @return A certificate object.
     */
    getPeerCertificate(detailed: true): DetailedPeerCertificate;
    getPeerCertificate(detailed?: false): PeerCertificate;
    getPeerCertificate(
      detailed?: boolean
    ): PeerCertificate | DetailedPeerCertificate;
    /**
     * As the `Finished` messages are message digests of the complete handshake
     * (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
     * be used for external authentication procedures when the authentication
     * provided by SSL/TLS is not desired or is not enough.
     *
     * Corresponds to the `SSL_get_peer_finished` routine in OpenSSL and may be used
     * to implement the `tls-unique` channel binding from [RFC 5929](https://tools.ietf.org/html/rfc5929).
     * @since v9.9.0
     * @return The latest `Finished` message that is expected or has actually been received from the socket as part of a SSL/TLS handshake, or `undefined` if there is no `Finished` message so
     * far.
     */
    getPeerFinished(): Buffer | undefined;
    /**
     * Returns a string containing the negotiated SSL/TLS protocol version of the
     * current connection. The value `'unknown'` will be returned for connected
     * sockets that have not completed the handshaking process. The value `null` will
     * be returned for server sockets or disconnected client sockets.
     *
     * Protocol versions are:
     *
     * * `'SSLv3'`
     * * `'TLSv1'`
     * * `'TLSv1.1'`
     * * `'TLSv1.2'`
     * * `'TLSv1.3'`
     *
     * See the OpenSSL [`SSL_get_version`](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_version.html) documentation for more information.
     * @since v5.7.0
     */
    getProtocol(): string | null;
    /**
     * Returns the TLS session data or `undefined` if no session was
     * negotiated. On the client, the data can be provided to the `session` option of {@link connect} to resume the connection. On the server, it may be useful
     * for debugging.
     *
     * See `Session Resumption` for more information.
     *
     * Note: `getSession()` works only for TLSv1.2 and below. For TLSv1.3, applications
     * must use the `'session'` event (it also works for TLSv1.2 and below).
     * @since v0.11.4
     */
    getSession(): Buffer | undefined;
    /**
     * See [SSL\_get\_shared\_sigalgs](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_shared_sigalgs.html) for more information.
     * @since v12.11.0
     * @return List of signature algorithms shared between the server and the client in the order of decreasing preference.
     */
    getSharedSigalgs(): string[];
    /**
     * For a client, returns the TLS session ticket if one is available, or`undefined`. For a server, always returns `undefined`.
     *
     * It may be useful for debugging.
     *
     * See `Session Resumption` for more information.
     * @since v0.11.4
     */
    getTLSTicket(): Buffer | undefined;
    /**
     * See `Session Resumption` for more information.
     * @since v0.5.6
     * @return `true` if the session was reused, `false` otherwise.
     */
    isSessionReused(): boolean;
    /**
     * The `tlsSocket.renegotiate()` method initiates a TLS renegotiation process.
     * Upon completion, the `callback` function will be passed a single argument
     * that is either an `Error` (if the request failed) or `null`.
     *
     * This method can be used to request a peer's certificate after the secure
     * connection has been established.
     *
     * When running as the server, the socket will be destroyed with an error after`handshakeTimeout` timeout.
     *
     * For TLSv1.3, renegotiation cannot be initiated, it is not supported by the
     * protocol.
     * @since v0.11.8
     * @param callback If `renegotiate()` returned `true`, callback is attached once to the `'secure'` event. If `renegotiate()` returned `false`, `callback` will be called in the next tick with
     * an error, unless the `tlsSocket` has been destroyed, in which case `callback` will not be called at all.
     * @return `true` if renegotiation was initiated, `false` otherwise.
     */
    renegotiate(
      options: {
        rejectUnauthorized?: boolean | undefined;
        requestCert?: boolean | undefined;
      },
      callback: (err: Error | null) => void
    ): undefined | boolean;
    /**
     * The `tlsSocket.setMaxSendFragment()` method sets the maximum TLS fragment size.
     * Returns `true` if setting the limit succeeded; `false` otherwise.
     *
     * Smaller fragment sizes decrease the buffering latency on the client: larger
     * fragments are buffered by the TLS layer until the entire fragment is received
     * and its integrity is verified; large fragments can span multiple roundtrips
     * and their processing can be delayed due to packet loss or reordering. However,
     * smaller fragments add extra TLS framing bytes and CPU overhead, which may
     * decrease overall server throughput.
     * @since v0.11.11
     * @param [size=16384] The maximum TLS fragment size. The maximum value is `16384`.
     */
    setMaxSendFragment(size: number): boolean;
    /**
     * Disables TLS renegotiation for this `TLSSocket` instance. Once called, attempts
     * to renegotiate will trigger an `'error'` event on the `TLSSocket`.
     * @since v8.4.0
     */
    disableRenegotiation(): void;
    /**
     * When enabled, TLS packet trace information is written to `stderr`. This can be
     * used to debug TLS connection problems.
     *
     * The format of the output is identical to the output of`openssl s_client -trace` or `openssl s_server -trace`. While it is produced by
     * OpenSSL's `SSL_trace()` function, the format is undocumented, can change
     * without notice, and should not be relied on.
     * @since v12.2.0
     */
    enableTrace(): void;
    /**
     * Returns the peer certificate as an `X509Certificate` object.
     *
     * If there is no peer certificate, or the socket has been destroyed,`undefined` will be returned.
     * @since v15.9.0
     */
    getPeerX509Certificate(): X509Certificate | undefined;
    /**
     * Returns the local certificate as an `X509Certificate` object.
     *
     * If there is no local certificate, or the socket has been destroyed,`undefined` will be returned.
     * @since v15.9.0
     */
    getX509Certificate(): X509Certificate | undefined;
    /**
     * Keying material is used for validations to prevent different kind of attacks in
     * network protocols, for example in the specifications of IEEE 802.1X.
     *
     * Example
     *
     * ```js
     * const keyingMaterial = tlsSocket.exportKeyingMaterial(
     *   128,
     *   'client finished');
     *
     * /*
     *  Example return value of keyingMaterial:
     *  <Buffer 76 26 af 99 c5 56 8e 42 09 91 ef 9f 93 cb ad 6c 7b 65 f8 53 f1 d8 d9
     *     12 5a 33 b8 b5 25 df 7b 37 9f e0 e2 4f b8 67 83 a3 2f cd 5d 41 42 4c 91
     *     74 ef 2c ... 78 more bytes>
     *
     * ```
     *
     * See the OpenSSL [`SSL_export_keying_material`](https://www.openssl.org/docs/man1.1.1/man3/SSL_export_keying_material.html) documentation for more
     * information.
     * @since v13.10.0, v12.17.0
     * @param length number of bytes to retrieve from keying material
     * @param label an application specific label, typically this will be a value from the [IANA Exporter Label
     * Registry](https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#exporter-labels).
     * @param context Optionally provide a context.
     * @return requested bytes of the keying material
     */
    exportKeyingMaterial(
      length: number,
      label: string,
      context: Buffer
    ): Buffer;
    addListener(event: string, listener: (...args: any[]) => void): this;
    addListener(
      event: "OCSPResponse",
      listener: (response: Buffer) => void
    ): this;
    addListener(event: "secureConnect", listener: () => void): this;
    addListener(event: "session", listener: (session: Buffer) => void): this;
    addListener(event: "keylog", listener: (line: Buffer) => void): this;
    emit(event: string | symbol, ...args: any[]): boolean;
    emit(event: "OCSPResponse", response: Buffer): boolean;
    emit(event: "secureConnect"): boolean;
    emit(event: "session", session: Buffer): boolean;
    emit(event: "keylog", line: Buffer): boolean;
    on(event: string, listener: (...args: any[]) => void): this;
    on(event: "OCSPResponse", listener: (response: Buffer) => void): this;
    on(event: "secureConnect", listener: () => void): this;
    on(event: "session", listener: (session: Buffer) => void): this;
    on(event: "keylog", listener: (line: Buffer) => void): this;
    once(event: string, listener: (...args: any[]) => void): this;
    once(event: "OCSPResponse", listener: (response: Buffer) => void): this;
    once(event: "secureConnect", listener: () => void): this;
    once(event: "session", listener: (session: Buffer) => void): this;
    once(event: "keylog", listener: (line: Buffer) => void): this;
    prependListener(event: string, listener: (...args: any[]) => void): this;
    prependListener(
      event: "OCSPResponse",
      listener: (response: Buffer) => void
    ): this;
    prependListener(event: "secureConnect", listener: () => void): this;
    prependListener(
      event: "session",
      listener: (session: Buffer) => void
    ): this;
    prependListener(event: "keylog", listener: (line: Buffer) => void): this;
    prependOnceListener(
      event: string,
      listener: (...args: any[]) => void
    ): this;
    prependOnceListener(
      event: "OCSPResponse",
      listener: (response: Buffer) => void
    ): this;
    prependOnceListener(event: "secureConnect", listener: () => void): this;
    prependOnceListener(
      event: "session",
      listener: (session: Buffer) => void
    ): this;
    prependOnceListener(
      event: "keylog",
      listener: (line: Buffer) => void
    ): this;
  }
  interface CommonConnectionOptions {
    /**
     * An optional TLS context object from tls.createSecureContext()
     */
    secureContext?: SecureContext | undefined;
    /**
     * When enabled, TLS packet trace information is written to `stderr`. This can be
     * used to debug TLS connection problems.
     * @default false
     */
    enableTrace?: boolean | undefined;
    /**
     * If true the server will request a certificate from clients that
     * connect and attempt to verify that certificate. Defaults to
     * false.
     */
    requestCert?: boolean | undefined;
    /**
     * An array of strings or a Buffer naming possible ALPN protocols.
     * (Protocols should be ordered by their priority.)
     */
    ALPNProtocols?: string[] | Uint8Array[] | Uint8Array | undefined;
    /**
     * SNICallback(servername, cb) <Function> A function that will be
     * called if the client supports SNI TLS extension. Two arguments
     * will be passed when called: servername and cb. SNICallback should
     * invoke cb(null, ctx), where ctx is a SecureContext instance.
     * (tls.createSecureContext(...) can be used to get a proper
     * SecureContext.) If SNICallback wasn't provided the default callback
     * with high-level API will be used (see below).
     */
    SNICallback?:
      | ((
          servername: string,
          cb: (err: Error | null, ctx?: SecureContext) => void
        ) => void)
      | undefined;
    /**
     * If true the server will reject any connection which is not
     * authorized with the list of supplied CAs. This option only has an
     * effect if requestCert is true.
     * @default true
     */
    rejectUnauthorized?: boolean | undefined;
  }
  interface TlsOptions
    extends SecureContextOptions,
      CommonConnectionOptions,
      net.ServerOpts {
    /**
     * Abort the connection if the SSL/TLS handshake does not finish in the
     * specified number of milliseconds. A 'tlsClientError' is emitted on
     * the tls.Server object whenever a handshake times out. Default:
     * 120000 (120 seconds).
     */
    handshakeTimeout?: number | undefined;
    /**
     * The number of seconds after which a TLS session created by the
     * server will no longer be resumable. See Session Resumption for more
     * information. Default: 300.
     */
    sessionTimeout?: number | undefined;
    /**
     * 48-bytes of cryptographically strong pseudo-random data.
     */
    ticketKeys?: Buffer | undefined;
    /**
     *
     * @param socket
     * @param identity identity parameter sent from the client.
     * @return pre-shared key that must either be
     * a buffer or `null` to stop the negotiation process. Returned PSK must be
     * compatible with the selected cipher's digest.
     *
     * When negotiating TLS-PSK (pre-shared keys), this function is called
     * with the identity provided by the client.
     * If the return value is `null` the negotiation process will stop and an
     * "unknown_psk_identity" alert message will be sent to the other party.
     * If the server wishes to hide the fact that the PSK identity was not known,
     * the callback must provide some random data as `psk` to make the connection
     * fail with "decrypt_error" before negotiation is finished.
     * PSK ciphers are disabled by default, and using TLS-PSK thus
     * requires explicitly specifying a cipher suite with the `ciphers` option.
     * More information can be found in the RFC 4279.
     */
    pskCallback?(
      socket: TLSSocket,
      identity: string
    ): DataView | NodeJS.TypedArray | null;
    /**
     * hint to send to a client to help
     * with selecting the identity during TLS-PSK negotiation. Will be ignored
     * in TLS 1.3. Upon failing to set pskIdentityHint `tlsClientError` will be
     * emitted with `ERR_TLS_PSK_SET_IDENTIY_HINT_FAILED` code.
     */
    pskIdentityHint?: string | undefined;
  }
  interface PSKCallbackNegotation {
    psk: DataView | NodeJS.TypedArray;
    identity: string;
  }
  interface ConnectionOptions
    extends SecureContextOptions,
      CommonConnectionOptions {
    host?: string | undefined;
    port?: number | undefined;
    path?: string | undefined; // Creates unix socket connection to path. If this option is specified, `host` and `port` are ignored.
    socket?: stream.Duplex | undefined; // Establish secure connection on a given socket rather than creating a new socket
    checkServerIdentity?: typeof checkServerIdentity | undefined;
    servername?: string | undefined; // SNI TLS Extension
    session?: Buffer | undefined;
    minDHSize?: number | undefined;
    lookup?: net.LookupFunction | undefined;
    timeout?: number | undefined;
    /**
     * When negotiating TLS-PSK (pre-shared keys), this function is called
     * with optional identity `hint` provided by the server or `null`
     * in case of TLS 1.3 where `hint` was removed.
     * It will be necessary to provide a custom `tls.checkServerIdentity()`
     * for the connection as the default one will try to check hostname/IP
     * of the server against the certificate but that's not applicable for PSK
     * because there won't be a certificate present.
     * More information can be found in the RFC 4279.
     *
     * @param hint message sent from the server to help client
     * decide which identity to use during negotiation.
     * Always `null` if TLS 1.3 is used.
     * @returns Return `null` to stop the negotiation process. `psk` must be
     * compatible with the selected cipher's digest.
     * `identity` must use UTF-8 encoding.
     */
    pskCallback?(hint: string | null): PSKCallbackNegotation | null;
  }
  /**
   * Accepts encrypted connections using TLS or SSL.
   * @since v0.3.2
   */
  class Server extends net.Server {
    constructor(secureConnectionListener?: (socket: TLSSocket) => void);
    constructor(
      options: TlsOptions,
      secureConnectionListener?: (socket: TLSSocket) => void
    );
    /**
     * The `server.addContext()` method adds a secure context that will be used if
     * the client request's SNI name matches the supplied `hostname` (or wildcard).
     *
     * When there are multiple matching contexts, the most recently added one is
     * used.
     * @since v0.5.3
     * @param hostname A SNI host name or wildcard (e.g. `'*'`)
     * @param context An object containing any of the possible properties from the {@link createSecureContext} `options` arguments (e.g. `key`, `cert`, `ca`, etc).
     */
    addContext(hostname: string, context: SecureContextOptions): void;
    /**
     * Returns the session ticket keys.
     *
     * See `Session Resumption` for more information.
     * @since v3.0.0
     * @return A 48-byte buffer containing the session ticket keys.
     */
    getTicketKeys(): Buffer;
    /**
     * The `server.setSecureContext()` method replaces the secure context of an
     * existing server. Existing connections to the server are not interrupted.
     * @since v11.0.0
     * @param options An object containing any of the possible properties from the {@link createSecureContext} `options` arguments (e.g. `key`, `cert`, `ca`, etc).
     */
    setSecureContext(options: SecureContextOptions): void;
    /**
     * Sets the session ticket keys.
     *
     * Changes to the ticket keys are effective only for future server connections.
     * Existing or currently pending server connections will use the previous keys.
     *
     * See `Session Resumption` for more information.
     * @since v3.0.0
     * @param keys A 48-byte buffer containing the session ticket keys.
     */
    setTicketKeys(keys: Buffer): void;
    /**
     * events.EventEmitter
     * 1. tlsClientError
     * 2. newSession
     * 3. OCSPRequest
     * 4. resumeSession
     * 5. secureConnection
     * 6. keylog
     */
    addListener(event: string, listener: (...args: any[]) => void): this;
    addListener(
      event: "tlsClientError",
      listener: (err: Error, tlsSocket: TLSSocket) => void
    ): this;
    addListener(
      event: "newSession",
      listener: (
        sessionId: Buffer,
        sessionData: Buffer,
        callback: () => void
      ) => void
    ): this;
    addListener(
      event: "OCSPRequest",
      listener: (
        certificate: Buffer,
        issuer: Buffer,
        callback: (err: Error | null, resp: Buffer) => void
      ) => void
    ): this;
    addListener(
      event: "resumeSession",
      listener: (
        sessionId: Buffer,
        callback: (err: Error | null, sessionData: Buffer | null) => void
      ) => void
    ): this;
    addListener(
      event: "secureConnection",
      listener: (tlsSocket: TLSSocket) => void
    ): this;
    addListener(
      event: "keylog",
      listener: (line: Buffer, tlsSocket: TLSSocket) => void
    ): this;
    emit(event: string | symbol, ...args: any[]): boolean;
    emit(event: "tlsClientError", err: Error, tlsSocket: TLSSocket): boolean;
    emit(
      event: "newSession",
      sessionId: Buffer,
      sessionData: Buffer,
      callback: () => void
    ): boolean;
    emit(
      event: "OCSPRequest",
      certificate: Buffer,
      issuer: Buffer,
      callback: (err: Error | null, resp: Buffer) => void
    ): boolean;
    emit(
      event: "resumeSession",
      sessionId: Buffer,
      callback: (err: Error | null, sessionData: Buffer | null) => void
    ): boolean;
    emit(event: "secureConnection", tlsSocket: TLSSocket): boolean;
    emit(event: "keylog", line: Buffer, tlsSocket: TLSSocket): boolean;
    on(event: string, listener: (...args: any[]) => void): this;
    on(
      event: "tlsClientError",
      listener: (err: Error, tlsSocket: TLSSocket) => void
    ): this;
    on(
      event: "newSession",
      listener: (
        sessionId: Buffer,
        sessionData: Buffer,
        callback: () => void
      ) => void
    ): this;
    on(
      event: "OCSPRequest",
      listener: (
        certificate: Buffer,
        issuer: Buffer,
        callback: (err: Error | null, resp: Buffer) => void
      ) => void
    ): this;
    on(
      event: "resumeSession",
      listener: (
        sessionId: Buffer,
        callback: (err: Error | null, sessionData: Buffer | null) => void
      ) => void
    ): this;
    on(
      event: "secureConnection",
      listener: (tlsSocket: TLSSocket) => void
    ): this;
    on(
      event: "keylog",
      listener: (line: Buffer, tlsSocket: TLSSocket) => void
    ): this;
    once(event: string, listener: (...args: any[]) => void): this;
    once(
      event: "tlsClientError",
      listener: (err: Error, tlsSocket: TLSSocket) => void
    ): this;
    once(
      event: "newSession",
      listener: (
        sessionId: Buffer,
        sessionData: Buffer,
        callback: () => void
      ) => void
    ): this;
    once(
      event: "OCSPRequest",
      listener: (
        certificate: Buffer,
        issuer: Buffer,
        callback: (err: Error | null, resp: Buffer) => void
      ) => void
    ): this;
    once(
      event: "resumeSession",
      listener: (
        sessionId: Buffer,
        callback: (err: Error | null, sessionData: Buffer | null) => void
      ) => void
    ): this;
    once(
      event: "secureConnection",
      listener: (tlsSocket: TLSSocket) => void
    ): this;
    once(
      event: "keylog",
      listener: (line: Buffer, tlsSocket: TLSSocket) => void
    ): this;
    prependListener(event: string, listener: (...args: any[]) => void): this;
    prependListener(
      event: "tlsClientError",
      listener: (err: Error, tlsSocket: TLSSocket) => void
    ): this;
    prependListener(
      event: "newSession",
      listener: (
        sessionId: Buffer,
        sessionData: Buffer,
        callback: () => void
      ) => void
    ): this;
    prependListener(
      event: "OCSPRequest",
      listener: (
        certificate: Buffer,
        issuer: Buffer,
        callback: (err: Error | null, resp: Buffer) => void
      ) => void
    ): this;
    prependListener(
      event: "resumeSession",
      listener: (
        sessionId: Buffer,
        callback: (err: Error | null, sessionData: Buffer | null) => void
      ) => void
    ): this;
    prependListener(
      event: "secureConnection",
      listener: (tlsSocket: TLSSocket) => void
    ): this;
    prependListener(
      event: "keylog",
      listener: (line: Buffer, tlsSocket: TLSSocket) => void
    ): this;
    prependOnceListener(
      event: string,
      listener: (...args: any[]) => void
    ): this;
    prependOnceListener(
      event: "tlsClientError",
      listener: (err: Error, tlsSocket: TLSSocket) => void
    ): this;
    prependOnceListener(
      event: "newSession",
      listener: (
        sessionId: Buffer,
        sessionData: Buffer,
        callback: () => void
      ) => void
    ): this;
    prependOnceListener(
      event: "OCSPRequest",
      listener: (
        certificate: Buffer,
        issuer: Buffer,
        callback: (err: Error | null, resp: Buffer) => void
      ) => void
    ): this;
    prependOnceListener(
      event: "resumeSession",
      listener: (
        sessionId: Buffer,
        callback: (err: Error | null, sessionData: Buffer | null) => void
      ) => void
    ): this;
    prependOnceListener(
      event: "secureConnection",
      listener: (tlsSocket: TLSSocket) => void
    ): this;
    prependOnceListener(
      event: "keylog",
      listener: (line: Buffer, tlsSocket: TLSSocket) => void
    ): this;
  }
  /**
   * @deprecated since v0.11.3 Use `tls.TLSSocket` instead.
   */
  interface SecurePair {
    encrypted: TLSSocket;
    cleartext: TLSSocket;
  }
  type SecureVersion = "TLSv1.3" | "TLSv1.2" | "TLSv1.1" | "TLSv1";
  interface SecureContextOptions {
    /**
     * Optionally override the trusted CA certificates. Default is to trust
     * the well-known CAs curated by Mozilla. Mozilla's CAs are completely
     * replaced when CAs are explicitly specified using this option.
     */
    ca?: string | Buffer | Array<string | Buffer> | undefined;
    /**
     *  Cert chains in PEM format. One cert chain should be provided per
     *  private key. Each cert chain should consist of the PEM formatted
     *  certificate for a provided private key, followed by the PEM
     *  formatted intermediate certificates (if any), in order, and not
     *  including the root CA (the root CA must be pre-known to the peer,
     *  see ca). When providing multiple cert chains, they do not have to
     *  be in the same order as their private keys in key. If the
     *  intermediate certificates are not provided, the peer will not be
     *  able to validate the certificate, and the handshake will fail.
     */
    cert?: string | Buffer | Array<string | Buffer> | undefined;
    /**
     *  Colon-separated list of supported signature algorithms. The list
     *  can contain digest algorithms (SHA256, MD5 etc.), public key
     *  algorithms (RSA-PSS, ECDSA etc.), combination of both (e.g
     *  'RSA+SHA384') or TLS v1.3 scheme names (e.g. rsa_pss_pss_sha512).
     */
    sigalgs?: string | undefined;
    /**
     * Cipher suite specification, replacing the default. For more
     * information, see modifying the default cipher suite. Permitted
     * ciphers can be obtained via tls.getCiphers(). Cipher names must be
     * uppercased in order for OpenSSL to accept them.
     */
    ciphers?: string | undefined;
    /**
     * Name of an OpenSSL engine which can provide the client certificate.
     */
    clientCertEngine?: string | undefined;
    /**
     * PEM formatted CRLs (Certificate Revocation Lists).
     */
    crl?: string | Buffer | Array<string | Buffer> | undefined;
    /**
     * `'auto'` or custom Diffie-Hellman parameters, required for non-ECDHE perfect forward secrecy.
     * If omitted or invalid, the parameters are silently discarded and DHE ciphers will not be available.
     * ECDHE-based perfect forward secrecy will still be available.
     */
    dhparam?: string | Buffer | undefined;
    /**
     * A string describing a named curve or a colon separated list of curve
     * NIDs or names, for example P-521:P-384:P-256, to use for ECDH key
     * agreement. Set to auto to select the curve automatically. Use
     * crypto.getCurves() to obtain a list of available curve names. On
     * recent releases, openssl ecparam -list_curves will also display the
     * name and description of each available elliptic curve. Default:
     * tls.DEFAULT_ECDH_CURVE.
     */
    ecdhCurve?: string | undefined;
    /**
     * Attempt to use the server's cipher suite preferences instead of the
     * client's. When true, causes SSL_OP_CIPHER_SERVER_PREFERENCE to be
     * set in secureOptions
     */
    honorCipherOrder?: boolean | undefined;
    /**
     * Private keys in PEM format. PEM allows the option of private keys
     * being encrypted. Encrypted keys will be decrypted with
     * options.passphrase. Multiple keys using different algorithms can be
     * provided either as an array of unencrypted key strings or buffers,
     * or an array of objects in the form {pem: <string|buffer>[,
     * passphrase: <string>]}. The object form can only occur in an array.
     * object.passphrase is optional. Encrypted keys will be decrypted with
     * object.passphrase if provided, or options.passphrase if it is not.
     */
    key?: string | Buffer | Array<string | Buffer | KeyObject> | undefined;
    /**
     * Name of an OpenSSL engine to get private key from. Should be used
     * together with privateKeyIdentifier.
     */
    privateKeyEngine?: string | undefined;
    /**
     * Identifier of a private key managed by an OpenSSL engine. Should be
     * used together with privateKeyEngine. Should not be set together with
     * key, because both options define a private key in different ways.
     */
    privateKeyIdentifier?: string | undefined;
    /**
     * Optionally set the maximum TLS version to allow. One
     * of `'TLSv1.3'`, `'TLSv1.2'`, `'TLSv1.1'`, or `'TLSv1'`. Cannot be specified along with the
     * `secureProtocol` option, use one or the other.
     * **Default:** `'TLSv1.3'`, unless changed using CLI options. Using
     * `--tls-max-v1.2` sets the default to `'TLSv1.2'`. Using `--tls-max-v1.3` sets the default to
     * `'TLSv1.3'`. If multiple of the options are provided, the highest maximum is used.
     */
    maxVersion?: SecureVersion | undefined;
    /**
     * Optionally set the minimum TLS version to allow. One
     * of `'TLSv1.3'`, `'TLSv1.2'`, `'TLSv1.1'`, or `'TLSv1'`. Cannot be specified along with the
     * `secureProtocol` option, use one or the other.  It is not recommended to use
     * less than TLSv1.2, but it may be required for interoperability.
     * **Default:** `'TLSv1.2'`, unless changed using CLI options. Using
     * `--tls-v1.0` sets the default to `'TLSv1'`. Using `--tls-v1.1` sets the default to
     * `'TLSv1.1'`. Using `--tls-min-v1.3` sets the default to
     * 'TLSv1.3'. If multiple of the options are provided, the lowest minimum is used.
     */
    minVersion?: SecureVersion | undefined;
    /**
     * Shared passphrase used for a single private key and/or a PFX.
     */
    passphrase?: string | undefined;
    /**
     * PFX or PKCS12 encoded private key and certificate chain. pfx is an
     * alternative to providing key and cert individually. PFX is usually
     * encrypted, if it is, passphrase will be used to decrypt it. Multiple
     * PFX can be provided either as an array of unencrypted PFX buffers,
     * or an array of objects in the form {buf: <string|buffer>[,
     * passphrase: <string>]}. The object form can only occur in an array.
     * object.passphrase is optional. Encrypted PFX will be decrypted with
     * object.passphrase if provided, or options.passphrase if it is not.
     */
    pfx?: string | Buffer | Array<string | Buffer | PxfObject> | undefined;
    /**
     * Optionally affect the OpenSSL protocol behavior, which is not
     * usually necessary. This should be used carefully if at all! Value is
     * a numeric bitmask of the SSL_OP_* options from OpenSSL Options
     */
    secureOptions?: number | undefined; // Value is a numeric bitmask of the `SSL_OP_*` options
    /**
     * Legacy mechanism to select the TLS protocol version to use, it does
     * not support independent control of the minimum and maximum version,
     * and does not support limiting the protocol to TLSv1.3. Use
     * minVersion and maxVersion instead. The possible values are listed as
     * SSL_METHODS, use the function names as strings. For example, use
     * 'TLSv1_1_method' to force TLS version 1.1, or 'TLS_method' to allow
     * any TLS protocol version up to TLSv1.3. It is not recommended to use
     * TLS versions less than 1.2, but it may be required for
     * interoperability. Default: none, see minVersion.
     */
    secureProtocol?: string | undefined;
    /**
     * Opaque identifier used by servers to ensure session state is not
     * shared between applications. Unused by clients.
     */
    sessionIdContext?: string | undefined;
    /**
     * 48-bytes of cryptographically strong pseudo-random data.
     * See Session Resumption for more information.
     */
    ticketKeys?: Buffer | undefined;
    /**
     * The number of seconds after which a TLS session created by the
     * server will no longer be resumable. See Session Resumption for more
     * information. Default: 300.
     */
    sessionTimeout?: number | undefined;
  }
  interface SecureContext {
    context: any;
  }
  /**
   * Verifies the certificate `cert` is issued to `hostname`.
   *
   * Returns [Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error) object, populating it with `reason`, `host`, and `cert` on
   * failure. On success, returns [undefined](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Undefined_type).
   *
   * This function is intended to be used in combination with the`checkServerIdentity` option that can be passed to {@link connect} and as
   * such operates on a `certificate object`. For other purposes, consider using `x509.checkHost()` instead.
   *
   * This function can be overwritten by providing an alternative function as the`options.checkServerIdentity` option that is passed to `tls.connect()`. The
   * overwriting function can call `tls.checkServerIdentity()` of course, to augment
   * the checks done with additional verification.
   *
   * This function is only called if the certificate passed all other checks, such as
   * being issued by trusted CA (`options.ca`).
   *
   * Earlier versions of Node.js incorrectly accepted certificates for a given`hostname` if a matching `uniformResourceIdentifier` subject alternative name
   * was present (see [CVE-2021-44531](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44531)). Applications that wish to accept`uniformResourceIdentifier` subject alternative names can use
   * a custom`options.checkServerIdentity` function that implements the desired behavior.
   * @since v0.8.4
   * @param hostname The host name or IP address to verify the certificate against.
   * @param cert A `certificate object` representing the peer's certificate.
   */
  function checkServerIdentity(
    hostname: string,
    cert: PeerCertificate
  ): Error | undefined;
  /**
   * Creates a new {@link Server}. The `secureConnectionListener`, if provided, is
   * automatically set as a listener for the `'secureConnection'` event.
   *
   * The `ticketKeys` options is automatically shared between `cluster` module
   * workers.
   *
   * The following illustrates a simple echo server:
   *
   * ```js
   * const tls = require('tls');
   * const fs = require('fs');
   *
   * const options = {
   *   key: fs.readFileSync('server-key.pem'),
   *   cert: fs.readFileSync('server-cert.pem'),
   *
   *   // This is necessary only if using client certificate authentication.
   *   requestCert: true,
   *
   *   // This is necessary only if the client uses a self-signed certificate.
   *   ca: [ fs.readFileSync('client-cert.pem') ]
   * };
   *
   * const server = tls.createServer(options, (socket) => {
   *   console.log('server connected',
   *               socket.authorized ? 'authorized' : 'unauthorized');
   *   socket.write('welcome!\n');
   *   socket.setEncoding('utf8');
   *   socket.pipe(socket);
   * });
   * server.listen(8000, () => {
   *   console.log('server bound');
   * });
   * ```
   *
   * The server can be tested by connecting to it using the example client from {@link connect}.
   * @since v0.3.2
   */
  function createServer(
    secureConnectionListener?: (socket: TLSSocket) => void
  ): Server;
  function createServer(
    options: TlsOptions,
    secureConnectionListener?: (socket: TLSSocket) => void
  ): Server;
  /**
   * The `callback` function, if specified, will be added as a listener for the `'secureConnect'` event.
   *
   * `tls.connect()` returns a {@link TLSSocket} object.
   *
   * Unlike the `https` API, `tls.connect()` does not enable the
   * SNI (Server Name Indication) extension by default, which may cause some
   * servers to return an incorrect certificate or reject the connection
   * altogether. To enable SNI, set the `servername` option in addition
   * to `host`.
   *
   * The following illustrates a client for the echo server example from {@link createServer}:
   *
   * ```js
   * // Assumes an echo server that is listening on port 8000.
   * const tls = require('tls');
   * const fs = require('fs');
   *
   * const options = {
   *   // Necessary only if the server requires client certificate authentication.
   *   key: fs.readFileSync('client-key.pem'),
   *   cert: fs.readFileSync('client-cert.pem'),
   *
   *   // Necessary only if the server uses a self-signed certificate.
   *   ca: [ fs.readFileSync('server-cert.pem') ],
   *
   *   // Necessary only if the server's cert isn't for "localhost".
   *   checkServerIdentity: () => { return null; },
   * };
   *
   * const socket = tls.connect(8000, options, () => {
   *   console.log('client connected',
   *               socket.authorized ? 'authorized' : 'unauthorized');
   *   process.stdin.pipe(socket);
   *   process.stdin.resume();
   * });
   * socket.setEncoding('utf8');
   * socket.on('data', (data) => {
   *   console.log(data);
   * });
   * socket.on('end', () => {
   *   console.log('server ends connection');
   * });
   * ```
   * @since v0.11.3
   */
  function connect(
    options: ConnectionOptions,
    secureConnectListener?: () => void
  ): TLSSocket;
  function connect(
    port: number,
    host?: string,
    options?: ConnectionOptions,
    secureConnectListener?: () => void
  ): TLSSocket;
  function connect(
    port: number,
    options?: ConnectionOptions,
    secureConnectListener?: () => void
  ): TLSSocket;
  /**
   * Creates a new secure pair object with two streams, one of which reads and writes
   * the encrypted data and the other of which reads and writes the cleartext data.
   * Generally, the encrypted stream is piped to/from an incoming encrypted data
   * stream and the cleartext one is used as a replacement for the initial encrypted
   * stream.
   *
   * `tls.createSecurePair()` returns a `tls.SecurePair` object with `cleartext` and`encrypted` stream properties.
   *
   * Using `cleartext` has the same API as {@link TLSSocket}.
   *
   * The `tls.createSecurePair()` method is now deprecated in favor of`tls.TLSSocket()`. For example, the code:
   *
   * ```js
   * pair = tls.createSecurePair(// ... );
   * pair.encrypted.pipe(socket);
   * socket.pipe(pair.encrypted);
   * ```
   *
   * can be replaced by:
   *
   * ```js
   * secureSocket = tls.TLSSocket(socket, options);
   * ```
   *
   * where `secureSocket` has the same API as `pair.cleartext`.
   * @since v0.3.2
   * @deprecated Since v0.11.3 - Use {@link TLSSocket} instead.
   * @param context A secure context object as returned by `tls.createSecureContext()`
   * @param isServer `true` to specify that this TLS connection should be opened as a server.
   * @param requestCert `true` to specify whether a server should request a certificate from a connecting client. Only applies when `isServer` is `true`.
   * @param rejectUnauthorized If not `false` a server automatically reject clients with invalid certificates. Only applies when `isServer` is `true`.
   */
  function createSecurePair(
    context?: SecureContext,
    isServer?: boolean,
    requestCert?: boolean,
    rejectUnauthorized?: boolean
  ): SecurePair;
  /**
   * {@link createServer} sets the default value of the `honorCipherOrder` option
   * to `true`, other APIs that create secure contexts leave it unset.
   *
   * {@link createServer} uses a 128 bit truncated SHA1 hash value generated
   * from `process.argv` as the default value of the `sessionIdContext` option, other
   * APIs that create secure contexts have no default value.
   *
   * The `tls.createSecureContext()` method creates a `SecureContext` object. It is
   * usable as an argument to several `tls` APIs, such as {@link createServer} and `server.addContext()`, but has no public methods.
   *
   * A key is _required_ for ciphers that use certificates. Either `key` or`pfx` can be used to provide it.
   *
   * If the `ca` option is not given, then Node.js will default to using [Mozilla's publicly trusted list of
   * CAs](https://hg.mozilla.org/mozilla-central/raw-file/tip/security/nss/lib/ckfw/builtins/certdata.txt).
   * @since v0.11.13
   */
  function createSecureContext(options?: SecureContextOptions): SecureContext;
  /**
   * Returns an array with the names of the supported TLS ciphers. The names are
   * lower-case for historical reasons, but must be uppercased to be used in
   * the `ciphers` option of {@link createSecureContext}.
   *
   * Not all supported ciphers are enabled by default. See `Modifying the default TLS cipher suite`.
   *
   * Cipher names that start with `'tls_'` are for TLSv1.3, all the others are for
   * TLSv1.2 and below.
   *
   * ```js
   * console.log(tls.getCiphers()); // ['aes128-gcm-sha256', 'aes128-sha', ...]
   * ```
   * @since v0.10.2
   */
  function getCiphers(): string[];
  /**
   * The default curve name to use for ECDH key agreement in a tls server.
   * The default value is 'auto'. See tls.createSecureContext() for further
   * information.
   */
  let DEFAULT_ECDH_CURVE: string;
  /**
   * The default value of the maxVersion option of
   * tls.createSecureContext(). It can be assigned any of the supported TLS
   * protocol versions, 'TLSv1.3', 'TLSv1.2', 'TLSv1.1', or 'TLSv1'. Default:
   * 'TLSv1.3', unless changed using CLI options. Using --tls-max-v1.2 sets
   * the default to 'TLSv1.2'. Using --tls-max-v1.3 sets the default to
   * 'TLSv1.3'. If multiple of the options are provided, the highest maximum
   * is used.
   */
  let DEFAULT_MAX_VERSION: SecureVersion;
  /**
   * The default value of the minVersion option of tls.createSecureContext().
   * It can be assigned any of the supported TLS protocol versions,
   * 'TLSv1.3', 'TLSv1.2', 'TLSv1.1', or 'TLSv1'. Default: 'TLSv1.2', unless
   * changed using CLI options. Using --tls-min-v1.0 sets the default to
   * 'TLSv1'. Using --tls-min-v1.1 sets the default to 'TLSv1.1'. Using
   * --tls-min-v1.3 sets the default to 'TLSv1.3'. If multiple of the options
   * are provided, the lowest minimum is used.
   */
  let DEFAULT_MIN_VERSION: SecureVersion;
  /**
   * The default value of the ciphers option of tls.createSecureContext().
   * It can be assigned any of the supported OpenSSL ciphers.
   * Defaults to the content of crypto.constants.defaultCoreCipherList, unless
   * changed using CLI options using --tls-default-ciphers.
   */
  let DEFAULT_CIPHERS: string;
  /**
   * An immutable array of strings representing the root certificates (in PEM
   * format) used for verifying peer certificates. This is the default value
   * of the ca option to tls.createSecureContext().
   */
  const rootCertificates: ReadonlyArray<string>;
}
declare module "node:tls" {
  export * from "tls";
}
