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Filename : tls.d.ts
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/**
 * 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/v16.7.0/lib/tls.js)
 */
declare module 'tls' {
    import { X509Certificate } from 'node:crypto';
    import * as net from 'node:net';
    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 {
        subject: Certificate;
        issuer: Certificate;
        subjectaltname: string;
        infoAccess: NodeJS.Dict<string[]>;
        modulus: string;
        exponent: string;
        valid_from: string;
        valid_to: string;
        fingerprint: string;
        fingerprint256: string;
        ext_key_usage: string[];
        serialNumber: string;
        raw: Buffer;
    }
    interface DetailedPeerCertificate extends PeerCertificate {
        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);
        /**
         * Returns `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: boolean;
        /**
         * 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.
         *
         * Note: 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?: net.Socket | 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: (err: Error, resp: Buffer) => 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, sessionData: Buffer) => 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: (err: Error, resp: Buffer) => 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, sessionData: Buffer) => 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: (err: Error, resp: Buffer) => 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, sessionData: Buffer) => 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: (err: Error, resp: Buffer) => 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, sessionData: Buffer) => 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: (err: Error, resp: Buffer) => 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, sessionData: Buffer) => 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: (err: Error, resp: Buffer) => 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, sessionData: Buffer) => 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;
        /**
         * Diffie Hellman parameters, required for Perfect Forward Secrecy. Use
         * openssl dhparam to create the parameters. The key length must be
         * greater than or equal to 1024 bits or else an error will be thrown.
         * Although 1024 bits is permissible, use 2048 bits or larger for
         * stronger security. If omitted or invalid, the parameters are
         * silently discarded and DHE ciphers will not 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<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 [&lt;Error&gt;](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 [&lt;undefined&gt;](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Undefined_type).
     *
     * This function can be overwritten by providing alternative function as part of
     * the `options.checkServerIdentity` option 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`).
     * @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}.
     *
     * 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;
    /**
     * 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';
}