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doc: add tls.DEFAULT_ECDH_CURVE

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A user can change the default curve for ECDH key agreement by
using tls.DEFAULT_ECDH_CURVE.

PR-URL: https://github.com/nodejs/node/pull/10264
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Italo A. Casas <me@italoacasas.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Shigeki Ohtsu <ohtsu@iij.ad.jp>
This commit is contained in:
Sam Roberts authored and James M Snell committed 2016-12-27 13:56:51 -08:00
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doc/api/tls.md
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@@ -926,10 +926,10 @@ added: v0.11.13
*Note*: [`tls.createServer()`][] sets the default value to `true`, other
APIs that create secure contexts leave it unset.
* `ecdhCurve` {string} A string describing a named curve to use for ECDH key
agreement or `false` to disable ECDH. Defaults to `prime256v1` (NIST P-256).
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.
agreement or `false` to disable ECDH. Defaults to
[`tls.DEFAULT_ECDH_CURVE`]. 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.
* `dhparam` {string|Buffer} 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, otherwise an
@@ -1077,6 +1077,13 @@ For example:
console.log(tls.getCiphers()); // ['AES128-SHA', 'AES256-SHA', ...]
```
## tls.DEFAULT_ECDH_CURVE
The default curve name to use for ECDH key agreement in a tls server. The
default value is `'prime256v1'` (NIST P-256). Consult [RFC 4492] and
[FIPS.186-4] for more details.
## Deprecated APIs
### Class: CryptoStream
@@ -1184,32 +1191,35 @@ secure_socket = tls.TLSSocket(socket, options);
where `secure_socket` has the same API as `pair.cleartext`.
[OpenSSL cipher list format documentation]: https://www.openssl.org/docs/man1.0.2/apps/ciphers.html#CIPHER-LIST-FORMAT
[Chrome's 'modern cryptography' setting]: https://www.chromium.org/Home/chromium-security/education/tls#TOC-Cipher-Suites
[OpenSSL Options]: crypto.html#crypto_openssl_options
[modifying the default cipher suite]: #tls_modifying_the_default_tls_cipher_suite
[specific attacks affecting larger AES key sizes]: https://www.schneier.com/blog/archives/2009/07/another_new_aes.html
[`crypto.getCurves()`]: crypto.html#crypto_crypto_getcurves
[`tls.createServer()`]: #tls_tls_createserver_options_secureconnectionlistener
[`tls.createSecurePair()`]: #tls_tls_createsecurepair_context_isserver_requestcert_rejectunauthorized_options
[`tls.TLSSocket`]: #tls_class_tls_tlssocket
[`net.Server`]: net.html#net_class_net_server
[`net.Socket`]: net.html#net_class_net_socket
[`net.Server.address()`]: net.html#net_server_address
[`'secureConnect'`]: #tls_event_secureconnect
[`'secureConnection'`]: #tls_event_secureconnection
[Perfect Forward Secrecy]: #tls_perfect_forward_secrecy
[Stream]: stream.html#stream_stream
[SSL_METHODS]: https://www.openssl.org/docs/man1.0.2/ssl/ssl.html#DEALING-WITH-PROTOCOL-METHODS
[tls.Server]: #tls_class_tls_server
[SSL_CTX_set_timeout]: https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_timeout.html
[Forward secrecy]: https://en.wikipedia.org/wiki/Perfect_forward_secrecy
[DHE]: https://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exchange
[ECDHE]: https://en.wikipedia.org/wiki/Elliptic_curve_Diffie%E2%80%93Hellman
[asn1.js]: https://npmjs.org/package/asn1.js
[FIPS.186-4]: http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf
[Forward secrecy]: https://en.wikipedia.org/wiki/Perfect_forward_secrecy
[OCSP request]: https://en.wikipedia.org/wiki/OCSP_stapling
[TLS recommendations]: https://wiki.mozilla.org/Security/Server_Side_TLS
[OpenSSL Options]: crypto.html#crypto_openssl_options
[OpenSSL cipher list format documentation]: https://www.openssl.org/docs/man1.0.2/apps/ciphers.html#CIPHER-LIST-FORMAT
[Perfect Forward Secrecy]: #tls_perfect_forward_secrecy
[RFC 4492]: https://www.rfc-editor.org/rfc/rfc4492.txt
[SSL_CTX_set_timeout]: https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_timeout.html
[SSL_METHODS]: https://www.openssl.org/docs/man1.0.2/ssl/ssl.html#DEALING-WITH-PROTOCOL-METHODS
[Stream]: stream.html#stream_stream
[TLS Session Tickets]: https://www.ietf.org/rfc/rfc5077.txt
[TLS recommendations]: https://wiki.mozilla.org/Security/Server_Side_TLS
[`'secureConnect'`]: #tls_event_secureconnect
[`'secureConnection'`]: #tls_event_secureconnection
[`crypto.getCurves()`]: crypto.html#crypto_crypto_getcurves
[`net.Server.address()`]: net.html#net_server_address
[`net.Server`]: net.html#net_class_net_server
[`net.Socket`]: net.html#net_class_net_socket
[`tls.DEFAULT_ECDH_CURVE`]: #tls_tls_default_ecdh_curve
[`tls.TLSSocket.getPeerCertificate()`]: #tls_tlssocket_getpeercertificate_detailed
[`tls.createSecureContext()`]: #tls_tls_createsecurecontext_options
[`tls.TLSSocket`]: #tls_class_tls_tlssocket
[`tls.connect()`]: #tls_tls_connect_options_callback
[`tls.createSecureContext()`]: #tls_tls_createsecurecontext_options
[`tls.createSecurePair()`]: #tls_tls_createsecurepair_context_isserver_requestcert_rejectunauthorized_options
[`tls.createServer()`]: #tls_tls_createserver_options_secureconnectionlistener
[asn1.js]: https://npmjs.org/package/asn1.js
[modifying the default cipher suite]: #tls_modifying_the_default_tls_cipher_suite
[specific attacks affecting larger AES key sizes]: https://www.schneier.com/blog/archives/2009/07/another_new_aes.html
[tls.Server]: #tls_class_tls_server