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tls: fix getEphemeralKeyInfo to support X25519 #20273

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tls: fix getEphemeralKeyInfo to support X25519 #20273

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36dc6e0
tls: fix getEphemeralKeyInfo to support X25519
shigeki Apr 25, 2018
fddb551
fix according to Ben's comment
shigeki Apr 25, 2018
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20 changes: 15 additions & 5 deletions src/node_crypto.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -2117,23 +2117,33 @@ void SSLWrap<Base>::GetEphemeralKeyInfo(
EVP_PKEY* key;

if (SSL_get_server_tmp_key(w->ssl_, &key)) {
switch (EVP_PKEY_id(key)) {
int kid = EVP_PKEY_id(key);
switch (kid) {
case EVP_PKEY_DH:
info->Set(context, env->type_string(),
FIXED_ONE_BYTE_STRING(env->isolate(), "DH")).FromJust();
info->Set(context, env->size_string(),
Integer::New(env->isolate(), EVP_PKEY_bits(key))).FromJust();
break;
case EVP_PKEY_EC:
// TODO(shigeki) Change this to EVP_PKEY_X25519 and add EVP_PKEY_X448
// after upgrading to 1.1.1.
case NID_X25519:
{
EC_KEY* ec = EVP_PKEY_get1_EC_KEY(key);
int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
EC_KEY_free(ec);
const char *curve_name;
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Style: star leans left.

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Fixed.

if (kid == EVP_PKEY_EC) {
EC_KEY* ec = EVP_PKEY_get1_EC_KEY(key);
int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
curve_name = OBJ_nid2sn(nid);
EC_KEY_free(ec);
} else {
curve_name = OBJ_nid2sn(kid);
}
info->Set(context, env->type_string(),
FIXED_ONE_BYTE_STRING(env->isolate(), "ECDH")).FromJust();
info->Set(context, env->name_string(),
OneByteString(args.GetIsolate(),
OBJ_nid2sn(nid))).FromJust();
curve_name)).FromJust();
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Since you're here, can you insert a break; statement on line 2151? That's a subtle footgun waiting to go off.

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Fixed. Thanks.

info->Set(context, env->size_string(),
Integer::New(env->isolate(),
EVP_PKEY_bits(key))).FromJust();
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2 changes: 2 additions & 0 deletions src/node_crypto.h
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Expand Up @@ -44,6 +44,8 @@
#endif // !OPENSSL_NO_ENGINE
#include <openssl/err.h>
#include <openssl/evp.h>
// TODO(shigeki) Remove this after upgrading to 1.1.1
#include <openssl/obj_mac.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
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9 changes: 7 additions & 2 deletions test/parallel/test-tls-client-getephemeralkeyinfo.js
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Expand Up @@ -82,13 +82,18 @@ function testECDHE256() {
}

function testECDHE512() {
test(521, 'ECDH', 'secp521r1', null);
test(521, 'ECDH', 'secp521r1', testX25519);
ntests++;
}

function testX25519() {
test(253, 'ECDH', 'X25519', null);
ntests++;
}

testNOT_PFS();

process.on('exit', function() {
assert.strictEqual(ntests, nsuccess);
assert.strictEqual(ntests, 5);
assert.strictEqual(ntests, 6);
});