Optional caOptional certCert 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.
Optional ciphersCipher 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.
Optional clientName of an OpenSSL engine which can provide the client certificate.
Optional crlPEM formatted CRLs (Certificate Revocation Lists).
Optional dhparam'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.
Optional ecdhA 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.
Optional honorAttempt 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
Optional keyPrivate 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:
Optional maxOptionally 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.
Optional minOptionally 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.
Optional passphraseShared passphrase used for a single private key and/or a PFX.
Optional pfxPFX 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:
Optional privateName of an OpenSSL engine to get private key from. Should be used together with privateKeyIdentifier.
Optional privateIdentifier 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.
Optional secureOptionally 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
Optional secureLegacy 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.
Optional sessionOpaque identifier used by servers to ensure session state is not shared between applications. Unused by clients.
Optional sessionThe 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.
Optional sigalgsColon-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).
Optional ticket48-bytes of cryptographically strong pseudo-random data. See Session Resumption for more information.
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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.