author | xuelei |
Mon, 12 Aug 2019 21:36:29 -0700 | |
changeset 57718 | a93b7b28f644 |
parent 55353 | 946f7f2d321c |
child 58679 | 9c3209ff7550 |
permissions | -rw-r--r-- |
50768 | 1 |
/* |
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
2 |
* Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. |
50768 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
|
5 |
* This code is free software; you can redistribute it and/or modify it |
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
|
7 |
* published by the Free Software Foundation. Oracle designates this |
|
8 |
* particular file as subject to the "Classpath" exception as provided |
|
9 |
* by Oracle in the LICENSE file that accompanied this code. |
|
10 |
* |
|
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
15 |
* accompanied this code). |
|
16 |
* |
|
17 |
* You should have received a copy of the GNU General Public License version |
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 |
* |
|
21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
|
24 |
*/ |
|
25 |
||
26 |
package sun.security.ssl; |
|
27 |
||
28 |
import java.io.IOException; |
|
29 |
import java.security.AlgorithmConstraints; |
|
30 |
import java.security.CryptoPrimitive; |
|
31 |
import java.security.GeneralSecurityException; |
|
32 |
import java.security.KeyFactory; |
|
33 |
import java.security.KeyPair; |
|
34 |
import java.security.KeyPairGenerator; |
|
35 |
import java.security.PrivateKey; |
|
36 |
import java.security.PublicKey; |
|
37 |
import java.security.SecureRandom; |
|
38 |
import java.security.interfaces.ECPublicKey; |
|
39 |
import java.security.spec.ECParameterSpec; |
|
40 |
import java.security.spec.ECPoint; |
|
41 |
import java.security.spec.ECPublicKeySpec; |
|
42 |
import java.util.EnumSet; |
|
43 |
import javax.crypto.KeyAgreement; |
|
44 |
import javax.crypto.SecretKey; |
|
45 |
import javax.net.ssl.SSLHandshakeException; |
|
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
46 |
import sun.security.ssl.NamedGroup.NamedGroupSpec; |
50768 | 47 |
import sun.security.ssl.SupportedGroupsExtension.SupportedGroups; |
48 |
import sun.security.ssl.X509Authentication.X509Credentials; |
|
49 |
import sun.security.ssl.X509Authentication.X509Possession; |
|
55353 | 50 |
import sun.security.ssl.XDHKeyExchange.XDHECredentials; |
51 |
import sun.security.ssl.XDHKeyExchange.XDHEPossession; |
|
50768 | 52 |
import sun.security.util.ECUtil; |
53 |
||
54 |
final class ECDHKeyExchange { |
|
55 |
static final SSLPossessionGenerator poGenerator = |
|
56 |
new ECDHEPossessionGenerator(); |
|
57 |
static final SSLKeyAgreementGenerator ecdhKAGenerator = |
|
58 |
new ECDHKAGenerator(); |
|
59 |
||
55353 | 60 |
// TLSv1.3 |
61 |
static final SSLKeyAgreementGenerator ecdheKAGenerator = |
|
62 |
new ECDHEKAGenerator(); |
|
63 |
||
64 |
// TLSv1-1.2, the KA gets more difficult with EC/XEC keys |
|
65 |
static final SSLKeyAgreementGenerator ecdheXdhKAGenerator = |
|
66 |
new ECDHEXDHKAGenerator(); |
|
67 |
||
68 |
static final class ECDHECredentials implements NamedGroupCredentials { |
|
50768 | 69 |
final ECPublicKey popPublicKey; |
70 |
final NamedGroup namedGroup; |
|
71 |
||
72 |
ECDHECredentials(ECPublicKey popPublicKey, NamedGroup namedGroup) { |
|
73 |
this.popPublicKey = popPublicKey; |
|
74 |
this.namedGroup = namedGroup; |
|
75 |
} |
|
76 |
||
55353 | 77 |
@Override |
78 |
public PublicKey getPublicKey() { |
|
79 |
return popPublicKey; |
|
80 |
} |
|
81 |
||
82 |
@Override |
|
83 |
public NamedGroup getNamedGroup() { |
|
84 |
return namedGroup; |
|
85 |
} |
|
86 |
||
50768 | 87 |
static ECDHECredentials valueOf(NamedGroup namedGroup, |
88 |
byte[] encodedPoint) throws IOException, GeneralSecurityException { |
|
89 |
||
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
90 |
if (namedGroup.spec != NamedGroupSpec.NAMED_GROUP_ECDHE) { |
50768 | 91 |
throw new RuntimeException( |
92 |
"Credentials decoding: Not ECDHE named group"); |
|
93 |
} |
|
94 |
||
95 |
if (encodedPoint == null || encodedPoint.length == 0) { |
|
96 |
return null; |
|
97 |
} |
|
98 |
||
99 |
ECParameterSpec parameters = |
|
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
100 |
(ECParameterSpec)namedGroup.keAlgParamSpec; |
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
101 |
ECPoint point = ECUtil.decodePoint( |
50768 | 102 |
encodedPoint, parameters.getCurve()); |
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
103 |
KeyFactory factory = KeyFactory.getInstance("EC"); |
50768 | 104 |
ECPublicKey publicKey = (ECPublicKey)factory.generatePublic( |
105 |
new ECPublicKeySpec(point, parameters)); |
|
106 |
return new ECDHECredentials(publicKey, namedGroup); |
|
107 |
} |
|
108 |
} |
|
109 |
||
55353 | 110 |
static final class ECDHEPossession implements NamedGroupPossession { |
50768 | 111 |
final PrivateKey privateKey; |
112 |
final ECPublicKey publicKey; |
|
113 |
final NamedGroup namedGroup; |
|
114 |
||
115 |
ECDHEPossession(NamedGroup namedGroup, SecureRandom random) { |
|
116 |
try { |
|
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
117 |
KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC"); |
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
118 |
kpg.initialize(namedGroup.keAlgParamSpec, random); |
50768 | 119 |
KeyPair kp = kpg.generateKeyPair(); |
120 |
privateKey = kp.getPrivate(); |
|
121 |
publicKey = (ECPublicKey)kp.getPublic(); |
|
122 |
} catch (GeneralSecurityException e) { |
|
123 |
throw new RuntimeException( |
|
124 |
"Could not generate ECDH keypair", e); |
|
125 |
} |
|
126 |
||
127 |
this.namedGroup = namedGroup; |
|
128 |
} |
|
129 |
||
130 |
ECDHEPossession(ECDHECredentials credentials, SecureRandom random) { |
|
131 |
ECParameterSpec params = credentials.popPublicKey.getParams(); |
|
132 |
try { |
|
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
133 |
KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC"); |
50768 | 134 |
kpg.initialize(params, random); |
135 |
KeyPair kp = kpg.generateKeyPair(); |
|
136 |
privateKey = kp.getPrivate(); |
|
137 |
publicKey = (ECPublicKey)kp.getPublic(); |
|
138 |
} catch (GeneralSecurityException e) { |
|
139 |
throw new RuntimeException( |
|
140 |
"Could not generate ECDH keypair", e); |
|
141 |
} |
|
142 |
||
143 |
this.namedGroup = credentials.namedGroup; |
|
144 |
} |
|
145 |
||
146 |
@Override |
|
147 |
public byte[] encode() { |
|
148 |
return ECUtil.encodePoint( |
|
149 |
publicKey.getW(), publicKey.getParams().getCurve()); |
|
150 |
} |
|
151 |
||
152 |
// called by ClientHandshaker with either the server's static or |
|
153 |
// ephemeral public key |
|
154 |
SecretKey getAgreedSecret( |
|
155 |
PublicKey peerPublicKey) throws SSLHandshakeException { |
|
156 |
||
157 |
try { |
|
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
158 |
KeyAgreement ka = KeyAgreement.getInstance("ECDH"); |
50768 | 159 |
ka.init(privateKey); |
160 |
ka.doPhase(peerPublicKey, true); |
|
161 |
return ka.generateSecret("TlsPremasterSecret"); |
|
162 |
} catch (GeneralSecurityException e) { |
|
163 |
throw (SSLHandshakeException) new SSLHandshakeException( |
|
164 |
"Could not generate secret").initCause(e); |
|
165 |
} |
|
166 |
} |
|
167 |
||
168 |
// called by ServerHandshaker |
|
169 |
SecretKey getAgreedSecret( |
|
170 |
byte[] encodedPoint) throws SSLHandshakeException { |
|
171 |
try { |
|
172 |
ECParameterSpec params = publicKey.getParams(); |
|
173 |
ECPoint point = |
|
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
174 |
ECUtil.decodePoint(encodedPoint, params.getCurve()); |
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
175 |
KeyFactory kf = KeyFactory.getInstance("EC"); |
50768 | 176 |
ECPublicKeySpec spec = new ECPublicKeySpec(point, params); |
177 |
PublicKey peerPublicKey = kf.generatePublic(spec); |
|
178 |
return getAgreedSecret(peerPublicKey); |
|
179 |
} catch (GeneralSecurityException | java.io.IOException e) { |
|
180 |
throw (SSLHandshakeException) new SSLHandshakeException( |
|
181 |
"Could not generate secret").initCause(e); |
|
182 |
} |
|
183 |
} |
|
184 |
||
185 |
// Check constraints of the specified EC public key. |
|
186 |
void checkConstraints(AlgorithmConstraints constraints, |
|
187 |
byte[] encodedPoint) throws SSLHandshakeException { |
|
188 |
try { |
|
189 |
||
190 |
ECParameterSpec params = publicKey.getParams(); |
|
191 |
ECPoint point = |
|
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
192 |
ECUtil.decodePoint(encodedPoint, params.getCurve()); |
50768 | 193 |
ECPublicKeySpec spec = new ECPublicKeySpec(point, params); |
194 |
||
53734
cb1642ccc732
8217835: Remove the experimental SunJSSE FIPS compliant mode
xuelei
parents:
53064
diff
changeset
|
195 |
KeyFactory kf = KeyFactory.getInstance("EC"); |
50768 | 196 |
ECPublicKey pubKey = (ECPublicKey)kf.generatePublic(spec); |
197 |
||
198 |
// check constraints of ECPublicKey |
|
199 |
if (!constraints.permits( |
|
200 |
EnumSet.of(CryptoPrimitive.KEY_AGREEMENT), pubKey)) { |
|
201 |
throw new SSLHandshakeException( |
|
202 |
"ECPublicKey does not comply to algorithm constraints"); |
|
203 |
} |
|
204 |
} catch (GeneralSecurityException | java.io.IOException e) { |
|
205 |
throw (SSLHandshakeException) new SSLHandshakeException( |
|
206 |
"Could not generate ECPublicKey").initCause(e); |
|
207 |
} |
|
208 |
} |
|
55353 | 209 |
|
210 |
@Override |
|
211 |
public PublicKey getPublicKey() { |
|
212 |
return publicKey; |
|
213 |
} |
|
214 |
||
215 |
@Override |
|
216 |
public NamedGroup getNamedGroup() { |
|
217 |
return namedGroup; |
|
218 |
} |
|
219 |
||
220 |
@Override |
|
221 |
public PrivateKey getPrivateKey() { |
|
222 |
return privateKey; |
|
223 |
} |
|
50768 | 224 |
} |
225 |
||
226 |
private static final |
|
227 |
class ECDHEPossessionGenerator implements SSLPossessionGenerator { |
|
228 |
// Prevent instantiation of this class. |
|
229 |
private ECDHEPossessionGenerator() { |
|
230 |
// blank |
|
231 |
} |
|
232 |
||
233 |
@Override |
|
234 |
public SSLPossession createPossession(HandshakeContext context) { |
|
55353 | 235 |
|
236 |
NamedGroup preferableNamedGroup; |
|
237 |
||
238 |
// Find most preferred EC or XEC groups |
|
50768 | 239 |
if ((context.clientRequestedNamedGroups != null) && |
240 |
(!context.clientRequestedNamedGroups.isEmpty())) { |
|
241 |
preferableNamedGroup = SupportedGroups.getPreferredGroup( |
|
242 |
context.negotiatedProtocol, |
|
243 |
context.algorithmConstraints, |
|
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
244 |
new NamedGroupSpec[] { |
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
245 |
NamedGroupSpec.NAMED_GROUP_ECDHE, |
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
246 |
NamedGroupSpec.NAMED_GROUP_XDH }, |
50768 | 247 |
context.clientRequestedNamedGroups); |
248 |
} else { |
|
249 |
preferableNamedGroup = SupportedGroups.getPreferredGroup( |
|
250 |
context.negotiatedProtocol, |
|
251 |
context.algorithmConstraints, |
|
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
252 |
new NamedGroupSpec[] { |
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
253 |
NamedGroupSpec.NAMED_GROUP_ECDHE, |
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
254 |
NamedGroupSpec.NAMED_GROUP_XDH }); |
50768 | 255 |
} |
256 |
||
257 |
if (preferableNamedGroup != null) { |
|
55353 | 258 |
return preferableNamedGroup.createPossession( |
259 |
context.sslContext.getSecureRandom()); |
|
50768 | 260 |
} |
261 |
||
262 |
// no match found, cannot use this cipher suite. |
|
263 |
// |
|
264 |
return null; |
|
265 |
} |
|
266 |
} |
|
267 |
||
268 |
private static final |
|
269 |
class ECDHKAGenerator implements SSLKeyAgreementGenerator { |
|
270 |
// Prevent instantiation of this class. |
|
271 |
private ECDHKAGenerator() { |
|
272 |
// blank |
|
273 |
} |
|
274 |
||
275 |
@Override |
|
276 |
public SSLKeyDerivation createKeyDerivation( |
|
277 |
HandshakeContext context) throws IOException { |
|
278 |
if (context instanceof ServerHandshakeContext) { |
|
279 |
return createServerKeyDerivation( |
|
280 |
(ServerHandshakeContext)context); |
|
281 |
} else { |
|
282 |
return createClientKeyDerivation( |
|
283 |
(ClientHandshakeContext)context); |
|
284 |
} |
|
285 |
} |
|
286 |
||
287 |
private SSLKeyDerivation createServerKeyDerivation( |
|
288 |
ServerHandshakeContext shc) throws IOException { |
|
289 |
X509Possession x509Possession = null; |
|
290 |
ECDHECredentials ecdheCredentials = null; |
|
291 |
for (SSLPossession poss : shc.handshakePossessions) { |
|
292 |
if (!(poss instanceof X509Possession)) { |
|
293 |
continue; |
|
294 |
} |
|
295 |
||
54417
f87041131515
8217610: TLSv1.3 fail with ClassException when EC keys are stored in PKCS11
xuelei
parents:
53734
diff
changeset
|
296 |
ECParameterSpec params = |
f87041131515
8217610: TLSv1.3 fail with ClassException when EC keys are stored in PKCS11
xuelei
parents:
53734
diff
changeset
|
297 |
((X509Possession)poss).getECParameterSpec(); |
f87041131515
8217610: TLSv1.3 fail with ClassException when EC keys are stored in PKCS11
xuelei
parents:
53734
diff
changeset
|
298 |
if (params == null) { |
50768 | 299 |
continue; |
300 |
} |
|
301 |
||
302 |
NamedGroup ng = NamedGroup.valueOf(params); |
|
303 |
if (ng == null) { |
|
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
304 |
// unlikely, have been checked during cipher suite |
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
305 |
// negotiation. |
53064
103ed9569fc8
8215443: The use of TransportContext.fatal() leads to bad coding style
xuelei
parents:
50768
diff
changeset
|
306 |
throw shc.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
50768 | 307 |
"Unsupported EC server cert for ECDH key exchange"); |
308 |
} |
|
309 |
||
310 |
for (SSLCredentials cred : shc.handshakeCredentials) { |
|
311 |
if (!(cred instanceof ECDHECredentials)) { |
|
312 |
continue; |
|
313 |
} |
|
314 |
if (ng.equals(((ECDHECredentials)cred).namedGroup)) { |
|
315 |
ecdheCredentials = (ECDHECredentials)cred; |
|
316 |
break; |
|
317 |
} |
|
318 |
} |
|
319 |
||
320 |
if (ecdheCredentials != null) { |
|
321 |
x509Possession = (X509Possession)poss; |
|
322 |
break; |
|
323 |
} |
|
324 |
} |
|
325 |
||
326 |
if (x509Possession == null || ecdheCredentials == null) { |
|
53064
103ed9569fc8
8215443: The use of TransportContext.fatal() leads to bad coding style
xuelei
parents:
50768
diff
changeset
|
327 |
throw shc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
50768 | 328 |
"No sufficient ECDHE key agreement parameters negotiated"); |
329 |
} |
|
330 |
||
55353 | 331 |
return new KAKeyDerivation("ECDH", shc, |
50768 | 332 |
x509Possession.popPrivateKey, ecdheCredentials.popPublicKey); |
333 |
} |
|
334 |
||
335 |
private SSLKeyDerivation createClientKeyDerivation( |
|
336 |
ClientHandshakeContext chc) throws IOException { |
|
337 |
ECDHEPossession ecdhePossession = null; |
|
338 |
X509Credentials x509Credentials = null; |
|
339 |
for (SSLPossession poss : chc.handshakePossessions) { |
|
340 |
if (!(poss instanceof ECDHEPossession)) { |
|
341 |
continue; |
|
342 |
} |
|
343 |
||
344 |
NamedGroup ng = ((ECDHEPossession)poss).namedGroup; |
|
345 |
for (SSLCredentials cred : chc.handshakeCredentials) { |
|
346 |
if (!(cred instanceof X509Credentials)) { |
|
347 |
continue; |
|
348 |
} |
|
349 |
||
350 |
PublicKey publicKey = ((X509Credentials)cred).popPublicKey; |
|
351 |
if (!publicKey.getAlgorithm().equals("EC")) { |
|
352 |
continue; |
|
353 |
} |
|
354 |
ECParameterSpec params = |
|
355 |
((ECPublicKey)publicKey).getParams(); |
|
356 |
NamedGroup namedGroup = NamedGroup.valueOf(params); |
|
357 |
if (namedGroup == null) { |
|
358 |
// unlikely, should have been checked previously |
|
53064
103ed9569fc8
8215443: The use of TransportContext.fatal() leads to bad coding style
xuelei
parents:
50768
diff
changeset
|
359 |
throw chc.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
50768 | 360 |
"Unsupported EC server cert for ECDH key exchange"); |
361 |
} |
|
362 |
||
363 |
if (ng.equals(namedGroup)) { |
|
364 |
x509Credentials = (X509Credentials)cred; |
|
365 |
break; |
|
366 |
} |
|
367 |
} |
|
368 |
||
369 |
if (x509Credentials != null) { |
|
370 |
ecdhePossession = (ECDHEPossession)poss; |
|
371 |
break; |
|
372 |
} |
|
373 |
} |
|
374 |
||
375 |
if (ecdhePossession == null || x509Credentials == null) { |
|
53064
103ed9569fc8
8215443: The use of TransportContext.fatal() leads to bad coding style
xuelei
parents:
50768
diff
changeset
|
376 |
throw chc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
50768 | 377 |
"No sufficient ECDH key agreement parameters negotiated"); |
378 |
} |
|
379 |
||
55353 | 380 |
return new KAKeyDerivation("ECDH", chc, |
50768 | 381 |
ecdhePossession.privateKey, x509Credentials.popPublicKey); |
382 |
} |
|
383 |
} |
|
384 |
||
385 |
private static final |
|
386 |
class ECDHEKAGenerator implements SSLKeyAgreementGenerator { |
|
387 |
// Prevent instantiation of this class. |
|
388 |
private ECDHEKAGenerator() { |
|
389 |
// blank |
|
390 |
} |
|
391 |
||
392 |
@Override |
|
393 |
public SSLKeyDerivation createKeyDerivation( |
|
394 |
HandshakeContext context) throws IOException { |
|
395 |
ECDHEPossession ecdhePossession = null; |
|
396 |
ECDHECredentials ecdheCredentials = null; |
|
397 |
for (SSLPossession poss : context.handshakePossessions) { |
|
398 |
if (!(poss instanceof ECDHEPossession)) { |
|
399 |
continue; |
|
400 |
} |
|
401 |
||
402 |
NamedGroup ng = ((ECDHEPossession)poss).namedGroup; |
|
403 |
for (SSLCredentials cred : context.handshakeCredentials) { |
|
404 |
if (!(cred instanceof ECDHECredentials)) { |
|
405 |
continue; |
|
406 |
} |
|
407 |
if (ng.equals(((ECDHECredentials)cred).namedGroup)) { |
|
408 |
ecdheCredentials = (ECDHECredentials)cred; |
|
409 |
break; |
|
410 |
} |
|
411 |
} |
|
412 |
||
413 |
if (ecdheCredentials != null) { |
|
414 |
ecdhePossession = (ECDHEPossession)poss; |
|
415 |
break; |
|
416 |
} |
|
417 |
} |
|
418 |
||
419 |
if (ecdhePossession == null || ecdheCredentials == null) { |
|
53064
103ed9569fc8
8215443: The use of TransportContext.fatal() leads to bad coding style
xuelei
parents:
50768
diff
changeset
|
420 |
throw context.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
50768 | 421 |
"No sufficient ECDHE key agreement parameters negotiated"); |
422 |
} |
|
423 |
||
55353 | 424 |
return new KAKeyDerivation("ECDH", context, |
50768 | 425 |
ecdhePossession.privateKey, ecdheCredentials.popPublicKey); |
426 |
} |
|
427 |
} |
|
428 |
||
55353 | 429 |
/* |
430 |
* A Generator for TLSv1-1.2 to create a ECDHE or a XDH KeyDerivation |
|
431 |
* object depending on the negotiated group. |
|
432 |
*/ |
|
50768 | 433 |
private static final |
55353 | 434 |
class ECDHEXDHKAGenerator implements SSLKeyAgreementGenerator { |
435 |
// Prevent instantiation of this class. |
|
436 |
private ECDHEXDHKAGenerator() { |
|
437 |
// blank |
|
50768 | 438 |
} |
439 |
||
440 |
@Override |
|
55353 | 441 |
public SSLKeyDerivation createKeyDerivation( |
442 |
HandshakeContext context) throws IOException { |
|
443 |
||
444 |
NamedGroupPossession namedGroupPossession = null; |
|
445 |
NamedGroupCredentials namedGroupCredentials = null; |
|
446 |
NamedGroup namedGroup = null; |
|
50768 | 447 |
|
55353 | 448 |
// Find a possession/credential combo using the same named group |
449 |
search: |
|
450 |
for (SSLPossession poss : context.handshakePossessions) { |
|
451 |
for (SSLCredentials cred : context.handshakeCredentials) { |
|
452 |
if (((poss instanceof ECDHEPossession) && |
|
453 |
(cred instanceof ECDHECredentials)) || |
|
454 |
(((poss instanceof XDHEPossession) && |
|
455 |
(cred instanceof XDHECredentials)))) { |
|
456 |
NamedGroupPossession p = (NamedGroupPossession)poss; |
|
457 |
NamedGroupCredentials c = (NamedGroupCredentials)cred; |
|
458 |
if (p.getNamedGroup() != c.getNamedGroup()) { |
|
459 |
continue; |
|
460 |
} else { |
|
461 |
namedGroup = p.getNamedGroup(); |
|
462 |
} |
|
463 |
namedGroupPossession = p; |
|
464 |
namedGroupCredentials = c; |
|
465 |
break search; |
|
466 |
} |
|
50768 | 467 |
} |
468 |
} |
|
469 |
||
55353 | 470 |
if (namedGroupPossession == null || namedGroupCredentials == null) { |
471 |
throw context.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
|
472 |
"No sufficient ECDHE/XDH key agreement " + |
|
473 |
"parameters negotiated"); |
|
474 |
} |
|
50768 | 475 |
|
55353 | 476 |
String alg; |
57718
a93b7b28f644
8226374: Restrict TLS signature schemes and named groups
xuelei
parents:
55353
diff
changeset
|
477 |
switch (namedGroup.spec) { |
55353 | 478 |
case NAMED_GROUP_ECDHE: |
479 |
alg = "ECDH"; |
|
480 |
break; |
|
481 |
case NAMED_GROUP_XDH: |
|
482 |
alg = "XDH"; |
|
483 |
break; |
|
484 |
default: |
|
485 |
throw new RuntimeException("Unexpected named group type"); |
|
486 |
} |
|
50768 | 487 |
|
55353 | 488 |
return new KAKeyDerivation(alg, context, |
489 |
namedGroupPossession.getPrivateKey(), |
|
490 |
namedGroupCredentials.getPublicKey()); |
|
50768 | 491 |
} |
492 |
} |
|
493 |
} |