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crypto: deprecate {ecdhCurve: false}

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This doesn't work in OpenSSL 1.1.0.  Per discussion on the PR, it is
preferable to just deprecate this setting. Deprecate it and skip the
test in OpenSSL 1.1.0.

PR-URL: https://github.com/nodejs/node/pull/16130
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rod Vagg <rod@vagg.org>
This commit is contained in:
David Benjamin 2017-10-21 13:29:18 -04:00 committed by Rod Vagg
parent aa81f995b4
commit 560f797776
3 changed files with 30 additions and 0 deletions
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10
doc/api/deprecations.md
View File

@ -737,6 +737,16 @@ Type: Runtime
internal mechanics of the `REPLServer` itself, and is therefore not
necessary in user space.
<a id="DEP0083"></a>
### DEP0083: Disabling ECDH by setting ecdhCurve to false
Type: Runtime
The `ecdhCurve` option to `tls.createSecureContext()` and `tls.TLSSocket` could
be set to `false` to disable ECDH entirely on the server only. This mode is
deprecated in preparation for migrating to OpenSSL 1.1.0 and consistency with
the client. Use the `ciphers` parameter instead.
[`Buffer.allocUnsafeSlow(size)`]: buffer.html#buffer_class_method_buffer_allocunsafeslow_size
[`Buffer.from(array)`]: buffer.html#buffer_class_method_buffer_from_array

12
lib/_tls_common.js
View File

@ -65,6 +65,16 @@ function validateKeyCert(value, type) {
exports.SecureContext = SecureContext;
function ecdhCurveWarning() {
if (ecdhCurveWarning.emitted) return;
process.emitWarning('{ ecdhCurve: false } is deprecated.',
'DeprecationWarning',
'DEP0083');
ecdhCurveWarning.emitted = true;
}
ecdhCurveWarning.emitted = false;
exports.createSecureContext = function createSecureContext(options, context) {
if (!options) options = {};
@ -140,6 +150,8 @@ exports.createSecureContext = function createSecureContext(options, context) {
c.context.setECDHCurve(tls.DEFAULT_ECDH_CURVE);
else if (options.ecdhCurve)
c.context.setECDHCurve(options.ecdhCurve);
else
ecdhCurveWarning();
if (options.dhparam) {
const warning = c.context.setDHParam(options.dhparam);

8
test/parallel/test-tls-ecdh-disable.js
View File

@ -31,6 +31,11 @@ if (!common.hasCrypto)
if (!common.opensslCli)
common.skip('missing openssl-cli');
const OPENSSL_VERSION_NUMBER =
require('crypto').constants.OPENSSL_VERSION_NUMBER;
if (OPENSSL_VERSION_NUMBER >= 0x10100000)
common.skip('false ecdhCurve not supported in OpenSSL 1.1.0');
const assert = require('assert');
const tls = require('tls');
const exec = require('child_process').exec;
@ -42,6 +47,9 @@ const options = {
ecdhCurve: false
};
common.expectWarning('DeprecationWarning',
'{ ecdhCurve: false } is deprecated.');
const server = tls.createServer(options, common.mustNotCall());
server.listen(0, '127.0.0.1', common.mustCall(function() {