| /* |
| * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.ssl; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.security.AlgorithmConstraints; |
| import java.security.AlgorithmParameters; |
| import java.security.CryptoPrimitive; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.spec.AlgorithmParameterSpec; |
| import java.security.spec.ECGenParameterSpec; |
| import java.security.spec.ECParameterSpec; |
| import java.security.spec.InvalidParameterSpecException; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.HashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import javax.crypto.spec.DHParameterSpec; |
| import javax.net.ssl.SSLProtocolException; |
| import sun.security.action.GetPropertyAction; |
| import static sun.security.ssl.SSLExtension.CH_SUPPORTED_GROUPS; |
| import static sun.security.ssl.SSLExtension.EE_SUPPORTED_GROUPS; |
| import sun.security.ssl.SSLExtension.ExtensionConsumer; |
| import sun.security.ssl.SSLExtension.SSLExtensionSpec; |
| import sun.security.ssl.SSLHandshake.HandshakeMessage; |
| |
| /** |
| * Pack of the "supported_groups" extensions [RFC 4492/7919]. |
| */ |
| final class SupportedGroupsExtension { |
| static final HandshakeProducer chNetworkProducer = |
| new CHSupportedGroupsProducer(); |
| static final ExtensionConsumer chOnLoadConsumer = |
| new CHSupportedGroupsConsumer(); |
| static final SSLStringizer sgsStringizer = |
| new SupportedGroupsStringizer(); |
| |
| static final HandshakeProducer eeNetworkProducer = |
| new EESupportedGroupsProducer(); |
| static final ExtensionConsumer eeOnLoadConsumer = |
| new EESupportedGroupsConsumer(); |
| |
| /** |
| * The "supported_groups" extension. |
| */ |
| static final class SupportedGroupsSpec implements SSLExtensionSpec { |
| final int[] namedGroupsIds; |
| |
| private SupportedGroupsSpec(int[] namedGroupsIds) { |
| this.namedGroupsIds = namedGroupsIds; |
| } |
| |
| private SupportedGroupsSpec(List<NamedGroup> namedGroups) { |
| this.namedGroupsIds = new int[namedGroups.size()]; |
| int i = 0; |
| for (NamedGroup ng : namedGroups) { |
| namedGroupsIds[i++] = ng.id; |
| } |
| } |
| |
| private SupportedGroupsSpec(ByteBuffer m) throws IOException { |
| if (m.remaining() < 2) { // 2: the length of the list |
| throw new SSLProtocolException( |
| "Invalid supported_groups extension: insufficient data"); |
| } |
| |
| byte[] ngs = Record.getBytes16(m); |
| if (m.hasRemaining()) { |
| throw new SSLProtocolException( |
| "Invalid supported_groups extension: unknown extra data"); |
| } |
| |
| if ((ngs == null) || (ngs.length == 0) || (ngs.length % 2 != 0)) { |
| throw new SSLProtocolException( |
| "Invalid supported_groups extension: incomplete data"); |
| } |
| |
| int[] ids = new int[ngs.length / 2]; |
| for (int i = 0, j = 0; i < ngs.length;) { |
| ids[j++] = ((ngs[i++] & 0xFF) << 8) | (ngs[i++] & 0xFF); |
| } |
| |
| this.namedGroupsIds = ids; |
| } |
| |
| @Override |
| public String toString() { |
| MessageFormat messageFormat = new MessageFormat( |
| "\"versions\": '['{0}']'", Locale.ENGLISH); |
| |
| if (namedGroupsIds == null || namedGroupsIds.length == 0) { |
| Object[] messageFields = { |
| "<no supported named group specified>" |
| }; |
| return messageFormat.format(messageFields); |
| } else { |
| StringBuilder builder = new StringBuilder(512); |
| boolean isFirst = true; |
| for (int ngid : namedGroupsIds) { |
| if (isFirst) { |
| isFirst = false; |
| } else { |
| builder.append(", "); |
| } |
| |
| builder.append(NamedGroup.nameOf(ngid)); |
| } |
| |
| Object[] messageFields = { |
| builder.toString() |
| }; |
| |
| return messageFormat.format(messageFields); |
| } |
| } |
| } |
| |
| private static final |
| class SupportedGroupsStringizer implements SSLStringizer { |
| @Override |
| public String toString(ByteBuffer buffer) { |
| try { |
| return (new SupportedGroupsSpec(buffer)).toString(); |
| } catch (IOException ioe) { |
| // For debug logging only, so please swallow exceptions. |
| return ioe.getMessage(); |
| } |
| } |
| } |
| |
| static enum NamedGroupType { |
| NAMED_GROUP_ECDHE, // Elliptic Curve Groups (ECDHE) |
| NAMED_GROUP_FFDHE, // Finite Field Groups (DHE) |
| NAMED_GROUP_XDH, // Finite Field Groups (XDH) |
| NAMED_GROUP_ARBITRARY, // arbitrary prime and curves (ECDHE) |
| NAMED_GROUP_NONE; // Not predefined named group |
| |
| boolean isSupported(List<CipherSuite> cipherSuites) { |
| for (CipherSuite cs : cipherSuites) { |
| if (cs.keyExchange == null || cs.keyExchange.groupType == this) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| } |
| |
| static enum NamedGroup { |
| // Elliptic Curves (RFC 4492) |
| // |
| // See sun.security.util.CurveDB for the OIDs |
| // NIST K-163 |
| SECT163_K1 (0x0001, "sect163k1", "1.3.132.0.1", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECT163_R1 (0x0002, "sect163r1", "1.3.132.0.2", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST B-163 |
| SECT163_R2 (0x0003, "sect163r2", "1.3.132.0.15", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECT193_R1 (0x0004, "sect193r1", "1.3.132.0.24", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECT193_R2 (0x0005, "sect193r2", "1.3.132.0.25", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST K-233 |
| SECT233_K1 (0x0006, "sect233k1", "1.3.132.0.26", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST B-233 |
| SECT233_R1 (0x0007, "sect233r1", "1.3.132.0.27", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECT239_K1 (0x0008, "sect239k1", "1.3.132.0.3", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST K-283 |
| SECT283_K1 (0x0009, "sect283k1", "1.3.132.0.16", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST B-283 |
| SECT283_R1 (0x000A, "sect283r1", "1.3.132.0.17", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST K-409 |
| SECT409_K1 (0x000B, "sect409k1", "1.3.132.0.36", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST B-409 |
| SECT409_R1 (0x000C, "sect409r1", "1.3.132.0.37", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST K-571 |
| SECT571_K1 (0x000D, "sect571k1", "1.3.132.0.38", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST B-571 |
| SECT571_R1 (0x000E, "sect571r1", "1.3.132.0.39", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECP160_K1 (0x000F, "secp160k1", "1.3.132.0.9", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECP160_R1 (0x0010, "secp160r1", "1.3.132.0.8", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECP160_R2 (0x0011, "secp160r2", "1.3.132.0.30", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECP192_K1 (0x0012, "secp192k1", "1.3.132.0.31", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST P-192 |
| SECP192_R1 (0x0013, "secp192r1", "1.2.840.10045.3.1.1", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECP224_K1 (0x0014, "secp224k1", "1.3.132.0.32", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| // NIST P-224 |
| SECP224_R1 (0x0015, "secp224r1", "1.3.132.0.33", true, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| SECP256_K1 (0x0016, "secp256k1", "1.3.132.0.10", false, |
| ProtocolVersion.PROTOCOLS_TO_12), |
| |
| // NIST P-256 |
| SECP256_R1 (0x0017, "secp256r1", "1.2.840.10045.3.1.7", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| |
| // NIST P-384 |
| SECP384_R1 (0x0018, "secp384r1", "1.3.132.0.34", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| |
| // NIST P-521 |
| SECP521_R1 (0x0019, "secp521r1", "1.3.132.0.35", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| |
| // x25519 and x448 |
| X25519 (0x001D, "x25519", true, "x25519", |
| ProtocolVersion.PROTOCOLS_TO_13), |
| X448 (0x001E, "x448", true, "x448", |
| ProtocolVersion.PROTOCOLS_TO_13), |
| |
| // Finite Field Diffie-Hellman Ephemeral Parameters (RFC 7919) |
| FFDHE_2048 (0x0100, "ffdhe2048", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| FFDHE_3072 (0x0101, "ffdhe3072", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| FFDHE_4096 (0x0102, "ffdhe4096", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| FFDHE_6144 (0x0103, "ffdhe6144", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| FFDHE_8192 (0x0104, "ffdhe8192", true, |
| ProtocolVersion.PROTOCOLS_TO_13), |
| |
| // Elliptic Curves (RFC 4492) |
| // |
| // arbitrary prime and characteristic-2 curves |
| ARBITRARY_PRIME (0xFF01, "arbitrary_explicit_prime_curves", |
| ProtocolVersion.PROTOCOLS_TO_12), |
| ARBITRARY_CHAR2 (0xFF02, "arbitrary_explicit_char2_curves", |
| ProtocolVersion.PROTOCOLS_TO_12); |
| |
| final int id; // hash + signature |
| final NamedGroupType type; // group type |
| final String name; // literal name |
| final String oid; // object identifier of the named group |
| final String algorithm; // signature algorithm |
| final boolean isFips; // can be used in FIPS mode? |
| final ProtocolVersion[] supportedProtocols; |
| |
| // Constructor used for Elliptic Curve Groups (ECDHE) |
| private NamedGroup(int id, String name, String oid, boolean isFips, |
| ProtocolVersion[] supportedProtocols) { |
| this.id = id; |
| this.type = NamedGroupType.NAMED_GROUP_ECDHE; |
| this.name = name; |
| this.oid = oid; |
| this.algorithm = "EC"; |
| this.isFips = isFips; |
| this.supportedProtocols = supportedProtocols; |
| } |
| |
| // Constructor used for Elliptic Curve Groups (XDH) |
| private NamedGroup(int id, String name, |
| boolean isFips, String algorithm, |
| ProtocolVersion[] supportedProtocols) { |
| this.id = id; |
| this.type = NamedGroupType.NAMED_GROUP_XDH; |
| this.name = name; |
| this.oid = null; |
| this.algorithm = algorithm; |
| this.isFips = isFips; |
| this.supportedProtocols = supportedProtocols; |
| } |
| |
| // Constructor used for Finite Field Diffie-Hellman Groups (FFDHE) |
| private NamedGroup(int id, String name, boolean isFips, |
| ProtocolVersion[] supportedProtocols) { |
| this.id = id; |
| this.type = NamedGroupType.NAMED_GROUP_FFDHE; |
| this.name = name; |
| this.oid = null; |
| this.algorithm = "DiffieHellman"; |
| this.isFips = isFips; |
| this.supportedProtocols = supportedProtocols; |
| } |
| |
| // Constructor used for arbitrary prime and curves (ECDHE) |
| private NamedGroup(int id, String name, |
| ProtocolVersion[] supportedProtocols) { |
| this.id = id; |
| this.type = NamedGroupType.NAMED_GROUP_ARBITRARY; |
| this.name = name; |
| this.oid = null; |
| this.algorithm = "EC"; |
| this.isFips = false; |
| this.supportedProtocols = supportedProtocols; |
| } |
| |
| static NamedGroup valueOf(int id) { |
| for (NamedGroup group : NamedGroup.values()) { |
| if (group.id == id) { |
| return group; |
| } |
| } |
| |
| return null; |
| } |
| |
| static NamedGroup valueOf(ECParameterSpec params) { |
| String oid = JsseJce.getNamedCurveOid(params); |
| if ((oid != null) && (!oid.isEmpty())) { |
| for (NamedGroup group : NamedGroup.values()) { |
| if ((group.type == NamedGroupType.NAMED_GROUP_ECDHE) && |
| oid.equals(group.oid)) { |
| return group; |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| static NamedGroup valueOf(DHParameterSpec params) { |
| for (Map.Entry<NamedGroup, AlgorithmParameters> me : |
| SupportedGroups.namedGroupParams.entrySet()) { |
| NamedGroup ng = me.getKey(); |
| if (ng.type != NamedGroupType.NAMED_GROUP_FFDHE) { |
| continue; |
| } |
| |
| DHParameterSpec ngParams = null; |
| AlgorithmParameters aps = me.getValue(); |
| try { |
| ngParams = aps.getParameterSpec(DHParameterSpec.class); |
| } catch (InvalidParameterSpecException ipse) { |
| // should be unlikely |
| } |
| |
| if (ngParams == null) { |
| continue; |
| } |
| |
| if (ngParams.getP().equals(params.getP()) && |
| ngParams.getG().equals(params.getG())) { |
| return ng; |
| } |
| } |
| |
| return null; |
| } |
| |
| static NamedGroup nameOf(String name) { |
| for (NamedGroup group : NamedGroup.values()) { |
| if (group.name.equals(name)) { |
| return group; |
| } |
| } |
| |
| return null; |
| } |
| |
| static String nameOf(int id) { |
| for (NamedGroup group : NamedGroup.values()) { |
| if (group.id == id) { |
| return group.name; |
| } |
| } |
| |
| return "UNDEFINED-NAMED-GROUP(" + id + ")"; |
| } |
| |
| boolean isAvailable(List<ProtocolVersion> protocolVersions) { |
| for (ProtocolVersion pv : supportedProtocols) { |
| if (protocolVersions.contains(pv)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| boolean isAvailable(ProtocolVersion protocolVersion) { |
| for (ProtocolVersion pv : supportedProtocols) { |
| if (protocolVersion == pv) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| boolean isSupported(List<CipherSuite> cipherSuites) { |
| for (CipherSuite cs : cipherSuites) { |
| boolean isMatch = isAvailable(cs.supportedProtocols); |
| if (isMatch && (cs.keyExchange == null || |
| cs.keyExchange.groupType == type)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| // lazy loading of parameters |
| AlgorithmParameters getParameters() { |
| return SupportedGroups.namedGroupParams.get(this); |
| } |
| |
| AlgorithmParameterSpec getParameterSpec() { |
| if (this.type == NamedGroupType.NAMED_GROUP_ECDHE) { |
| return SupportedGroups.getECGenParamSpec(this); |
| } else if (this.type == NamedGroupType.NAMED_GROUP_FFDHE) { |
| return SupportedGroups.getDHParameterSpec(this); |
| } |
| |
| return null; |
| } |
| } |
| |
| static class SupportedGroups { |
| // To switch off the supported_groups extension for DHE cipher suite. |
| static final boolean enableFFDHE = |
| Utilities.getBooleanProperty("jsse.enableFFDHE", true); |
| |
| // cache to speed up the parameters construction |
| static final Map<NamedGroup, |
| AlgorithmParameters> namedGroupParams = new HashMap<>(); |
| |
| // the supported named groups |
| static final NamedGroup[] supportedNamedGroups; |
| |
| static { |
| boolean requireFips = SunJSSE.isFIPS(); |
| |
| // The value of the System Property defines a list of enabled named |
| // groups in preference order, separated with comma. For example: |
| // |
| // jdk.tls.namedGroups="secp521r1, secp256r1, ffdhe2048" |
| // |
| // If the System Property is not defined or the value is empty, the |
| // default groups and preferences will be used. |
| String property = GetPropertyAction |
| .privilegedGetProperty("jdk.tls.namedGroups"); |
| if (property != null && property.length() != 0) { |
| // remove double quote marks from beginning/end of the property |
| if (property.length() > 1 && property.charAt(0) == '"' && |
| property.charAt(property.length() - 1) == '"') { |
| property = property.substring(1, property.length() - 1); |
| } |
| } |
| |
| ArrayList<NamedGroup> groupList; |
| if (property != null && property.length() != 0) { |
| String[] groups = property.split(","); |
| groupList = new ArrayList<>(groups.length); |
| for (String group : groups) { |
| group = group.trim(); |
| if (!group.isEmpty()) { |
| NamedGroup namedGroup = NamedGroup.nameOf(group); |
| if (namedGroup != null && |
| (!requireFips || namedGroup.isFips)) { |
| if (isAvailableGroup(namedGroup)) { |
| groupList.add(namedGroup); |
| } |
| } // ignore unknown groups |
| } |
| } |
| |
| if (groupList.isEmpty()) { |
| throw new IllegalArgumentException( |
| "System property jdk.tls.namedGroups(" + |
| property + ") contains no supported named groups"); |
| } |
| } else { // default groups |
| NamedGroup[] groups; |
| if (requireFips) { |
| groups = new NamedGroup[] { |
| // only NIST curves in FIPS mode |
| NamedGroup.SECP256_R1, |
| NamedGroup.SECP384_R1, |
| NamedGroup.SECP521_R1, |
| NamedGroup.SECT283_K1, |
| NamedGroup.SECT283_R1, |
| NamedGroup.SECT409_K1, |
| NamedGroup.SECT409_R1, |
| NamedGroup.SECT571_K1, |
| NamedGroup.SECT571_R1, |
| |
| // FFDHE 2048 |
| NamedGroup.FFDHE_2048, |
| NamedGroup.FFDHE_3072, |
| NamedGroup.FFDHE_4096, |
| NamedGroup.FFDHE_6144, |
| NamedGroup.FFDHE_8192, |
| }; |
| } else { |
| groups = new NamedGroup[] { |
| // NIST curves first |
| NamedGroup.SECP256_R1, |
| NamedGroup.SECP384_R1, |
| NamedGroup.SECP521_R1, |
| NamedGroup.SECT283_K1, |
| NamedGroup.SECT283_R1, |
| NamedGroup.SECT409_K1, |
| NamedGroup.SECT409_R1, |
| NamedGroup.SECT571_K1, |
| NamedGroup.SECT571_R1, |
| |
| // non-NIST curves |
| NamedGroup.SECP256_K1, |
| |
| // FFDHE 2048 |
| NamedGroup.FFDHE_2048, |
| NamedGroup.FFDHE_3072, |
| NamedGroup.FFDHE_4096, |
| NamedGroup.FFDHE_6144, |
| NamedGroup.FFDHE_8192, |
| }; |
| } |
| |
| groupList = new ArrayList<>(groups.length); |
| for (NamedGroup group : groups) { |
| if (isAvailableGroup(group)) { |
| groupList.add(group); |
| } |
| } |
| |
| if (groupList.isEmpty() && |
| SSLLogger.isOn && SSLLogger.isOn("ssl")) { |
| SSLLogger.warning("No default named groups"); |
| } |
| } |
| |
| supportedNamedGroups = new NamedGroup[groupList.size()]; |
| int i = 0; |
| for (NamedGroup namedGroup : groupList) { |
| supportedNamedGroups[i++] = namedGroup; |
| } |
| } |
| |
| // check whether the group is supported by the underlying providers |
| private static boolean isAvailableGroup(NamedGroup namedGroup) { |
| AlgorithmParameters params = null; |
| AlgorithmParameterSpec spec = null; |
| if (namedGroup.type == NamedGroupType.NAMED_GROUP_ECDHE) { |
| if (namedGroup.oid != null) { |
| try { |
| params = JsseJce.getAlgorithmParameters("EC"); |
| spec = new ECGenParameterSpec(namedGroup.oid); |
| } catch (NoSuchAlgorithmException e) { |
| return false; |
| } |
| } |
| } else if (namedGroup.type == NamedGroupType.NAMED_GROUP_FFDHE) { |
| try { |
| params = JsseJce.getAlgorithmParameters("DiffieHellman"); |
| spec = getFFDHEDHParameterSpec(namedGroup); |
| } catch (NoSuchAlgorithmException e) { |
| return false; |
| } |
| } // Otherwise, unsupported. |
| |
| if ((params != null) && (spec != null)) { |
| try { |
| params.init(spec); |
| } catch (InvalidParameterSpecException e) { |
| return false; |
| } |
| |
| // cache the parameters |
| namedGroupParams.put(namedGroup, params); |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| private static DHParameterSpec getFFDHEDHParameterSpec( |
| NamedGroup namedGroup) { |
| DHParameterSpec spec = null; |
| switch (namedGroup) { |
| case FFDHE_2048: |
| spec = PredefinedDHParameterSpecs.ffdheParams.get(2048); |
| break; |
| case FFDHE_3072: |
| spec = PredefinedDHParameterSpecs.ffdheParams.get(3072); |
| break; |
| case FFDHE_4096: |
| spec = PredefinedDHParameterSpecs.ffdheParams.get(4096); |
| break; |
| case FFDHE_6144: |
| spec = PredefinedDHParameterSpecs.ffdheParams.get(6144); |
| break; |
| case FFDHE_8192: |
| spec = PredefinedDHParameterSpecs.ffdheParams.get(8192); |
| } |
| |
| return spec; |
| } |
| |
| private static DHParameterSpec getPredefinedDHParameterSpec( |
| NamedGroup namedGroup) { |
| DHParameterSpec spec = null; |
| switch (namedGroup) { |
| case FFDHE_2048: |
| spec = PredefinedDHParameterSpecs.definedParams.get(2048); |
| break; |
| case FFDHE_3072: |
| spec = PredefinedDHParameterSpecs.definedParams.get(3072); |
| break; |
| case FFDHE_4096: |
| spec = PredefinedDHParameterSpecs.definedParams.get(4096); |
| break; |
| case FFDHE_6144: |
| spec = PredefinedDHParameterSpecs.definedParams.get(6144); |
| break; |
| case FFDHE_8192: |
| spec = PredefinedDHParameterSpecs.definedParams.get(8192); |
| } |
| |
| return spec; |
| } |
| |
| static ECGenParameterSpec getECGenParamSpec(NamedGroup namedGroup) { |
| if (namedGroup.type != NamedGroupType.NAMED_GROUP_ECDHE) { |
| throw new RuntimeException( |
| "Not a named EC group: " + namedGroup); |
| } |
| |
| AlgorithmParameters params = namedGroupParams.get(namedGroup); |
| if (params == null) { |
| throw new RuntimeException( |
| "Not a supported EC named group: " + namedGroup); |
| } |
| |
| try { |
| return params.getParameterSpec(ECGenParameterSpec.class); |
| } catch (InvalidParameterSpecException ipse) { |
| // should be unlikely |
| return new ECGenParameterSpec(namedGroup.oid); |
| } |
| } |
| |
| static DHParameterSpec getDHParameterSpec(NamedGroup namedGroup) { |
| if (namedGroup.type != NamedGroupType.NAMED_GROUP_FFDHE) { |
| throw new RuntimeException( |
| "Not a named DH group: " + namedGroup); |
| } |
| |
| AlgorithmParameters params = namedGroupParams.get(namedGroup); |
| if (params == null) { |
| throw new RuntimeException( |
| "Not a supported DH named group: " + namedGroup); |
| } |
| |
| try { |
| return params.getParameterSpec(DHParameterSpec.class); |
| } catch (InvalidParameterSpecException ipse) { |
| // should be unlikely |
| return getPredefinedDHParameterSpec(namedGroup); |
| } |
| } |
| |
| // Is there any supported group permitted by the constraints? |
| static boolean isActivatable( |
| AlgorithmConstraints constraints, NamedGroupType type) { |
| |
| boolean hasFFDHEGroups = false; |
| for (NamedGroup namedGroup : supportedNamedGroups) { |
| if (namedGroup.type == type) { |
| if (constraints.permits( |
| EnumSet.of(CryptoPrimitive.KEY_AGREEMENT), |
| namedGroup.algorithm, |
| namedGroupParams.get(namedGroup))) { |
| |
| return true; |
| } |
| |
| if (!hasFFDHEGroups && |
| (type == NamedGroupType.NAMED_GROUP_FFDHE)) { |
| hasFFDHEGroups = true; |
| } |
| } |
| } |
| |
| // For compatibility, if no FFDHE groups are defined, the non-FFDHE |
| // compatible mode (using DHE cipher suite without FFDHE extension) |
| // is allowed. |
| // |
| // Note that the constraints checking on DHE parameters will be |
| // performed during key exchanging in a handshake. |
| return !hasFFDHEGroups && type == NamedGroupType.NAMED_GROUP_FFDHE; |
| } |
| |
| // Is the named group permitted by the constraints? |
| static boolean isActivatable( |
| AlgorithmConstraints constraints, NamedGroup namedGroup) { |
| if (!isSupported(namedGroup)) { |
| return false; |
| } |
| |
| return constraints.permits( |
| EnumSet.of(CryptoPrimitive.KEY_AGREEMENT), |
| namedGroup.algorithm, |
| namedGroupParams.get(namedGroup)); |
| } |
| |
| // Is the named group supported? |
| static boolean isSupported(NamedGroup namedGroup) { |
| for (NamedGroup group : supportedNamedGroups) { |
| if (namedGroup.id == group.id) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| static NamedGroup getPreferredGroup( |
| ProtocolVersion negotiatedProtocol, |
| AlgorithmConstraints constraints, NamedGroupType type, |
| List<NamedGroup> requestedNamedGroups) { |
| for (NamedGroup namedGroup : requestedNamedGroups) { |
| if ((namedGroup.type == type) && |
| namedGroup.isAvailable(negotiatedProtocol) && |
| isSupported(namedGroup) && |
| constraints.permits( |
| EnumSet.of(CryptoPrimitive.KEY_AGREEMENT), |
| namedGroup.algorithm, |
| namedGroupParams.get(namedGroup))) { |
| return namedGroup; |
| } |
| } |
| |
| return null; |
| } |
| |
| static NamedGroup getPreferredGroup( |
| ProtocolVersion negotiatedProtocol, |
| AlgorithmConstraints constraints, NamedGroupType type) { |
| for (NamedGroup namedGroup : supportedNamedGroups) { |
| if ((namedGroup.type == type) && |
| namedGroup.isAvailable(negotiatedProtocol) && |
| constraints.permits( |
| EnumSet.of(CryptoPrimitive.KEY_AGREEMENT), |
| namedGroup.algorithm, |
| namedGroupParams.get(namedGroup))) { |
| return namedGroup; |
| } |
| } |
| |
| return null; |
| } |
| } |
| |
| /** |
| * Network data producer of a "supported_groups" extension in |
| * the ClientHello handshake message. |
| */ |
| private static final class CHSupportedGroupsProducer |
| extends SupportedGroups implements HandshakeProducer { |
| // Prevent instantiation of this class. |
| private CHSupportedGroupsProducer() { |
| // blank |
| } |
| |
| @Override |
| public byte[] produce(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| // The producing happens in client side only. |
| ClientHandshakeContext chc = (ClientHandshakeContext)context; |
| |
| // Is it a supported and enabled extension? |
| if (!chc.sslConfig.isAvailable(CH_SUPPORTED_GROUPS)) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Ignore unavailable supported_groups extension"); |
| } |
| return null; |
| } |
| |
| // Produce the extension. |
| ArrayList<NamedGroup> namedGroups = |
| new ArrayList<>(SupportedGroups.supportedNamedGroups.length); |
| for (NamedGroup ng : SupportedGroups.supportedNamedGroups) { |
| if ((!SupportedGroups.enableFFDHE) && |
| (ng.type == NamedGroupType.NAMED_GROUP_FFDHE)) { |
| continue; |
| } |
| |
| if (ng.isAvailable(chc.activeProtocols) && |
| ng.isSupported(chc.activeCipherSuites) && |
| chc.algorithmConstraints.permits( |
| EnumSet.of(CryptoPrimitive.KEY_AGREEMENT), |
| ng.algorithm, namedGroupParams.get(ng))) { |
| namedGroups.add(ng); |
| } else if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Ignore inactive or disabled named group: " + ng.name); |
| } |
| } |
| |
| if (namedGroups.isEmpty()) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.warning("no available named group"); |
| } |
| |
| return null; |
| } |
| |
| int vectorLen = namedGroups.size() << 1; |
| byte[] extData = new byte[vectorLen + 2]; |
| ByteBuffer m = ByteBuffer.wrap(extData); |
| Record.putInt16(m, vectorLen); |
| for (NamedGroup namedGroup : namedGroups) { |
| Record.putInt16(m, namedGroup.id); |
| } |
| |
| // Update the context. |
| chc.clientRequestedNamedGroups = |
| Collections.<NamedGroup>unmodifiableList(namedGroups); |
| chc.handshakeExtensions.put(CH_SUPPORTED_GROUPS, |
| new SupportedGroupsSpec(namedGroups)); |
| |
| return extData; |
| } |
| } |
| |
| /** |
| * Network data producer of a "supported_groups" extension in |
| * the ClientHello handshake message. |
| */ |
| private static final |
| class CHSupportedGroupsConsumer implements ExtensionConsumer { |
| // Prevent instantiation of this class. |
| private CHSupportedGroupsConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| HandshakeMessage message, ByteBuffer buffer) throws IOException { |
| // The consuming happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| |
| // Is it a supported and enabled extension? |
| if (!shc.sslConfig.isAvailable(CH_SUPPORTED_GROUPS)) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Ignore unavailable supported_groups extension"); |
| } |
| return; // ignore the extension |
| } |
| |
| // Parse the extension. |
| SupportedGroupsSpec spec; |
| try { |
| spec = new SupportedGroupsSpec(buffer); |
| } catch (IOException ioe) { |
| shc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe); |
| return; // fatal() always throws, make the compiler happy. |
| } |
| |
| // Update the context. |
| List<NamedGroup> knownNamedGroups = new LinkedList<>(); |
| for (int id : spec.namedGroupsIds) { |
| NamedGroup ng = NamedGroup.valueOf(id); |
| if (ng != null) { |
| knownNamedGroups.add(ng); |
| } |
| } |
| |
| shc.clientRequestedNamedGroups = knownNamedGroups; |
| shc.handshakeExtensions.put(CH_SUPPORTED_GROUPS, spec); |
| |
| // No impact on session resumption. |
| } |
| } |
| |
| /** |
| * Network data producer of a "supported_groups" extension in |
| * the EncryptedExtensions handshake message. |
| */ |
| private static final class EESupportedGroupsProducer |
| extends SupportedGroups implements HandshakeProducer { |
| |
| // Prevent instantiation of this class. |
| private EESupportedGroupsProducer() { |
| // blank |
| } |
| |
| @Override |
| public byte[] produce(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| // The producing happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| |
| // Is it a supported and enabled extension? |
| if (!shc.sslConfig.isAvailable(EE_SUPPORTED_GROUPS)) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Ignore unavailable supported_groups extension"); |
| } |
| return null; |
| } |
| |
| // Produce the extension. |
| // |
| // Contains all groups the server supports, regardless of whether |
| // they are currently supported by the client. |
| ArrayList<NamedGroup> namedGroups = new ArrayList<>( |
| SupportedGroups.supportedNamedGroups.length); |
| for (NamedGroup ng : SupportedGroups.supportedNamedGroups) { |
| if ((!SupportedGroups.enableFFDHE) && |
| (ng.type == NamedGroupType.NAMED_GROUP_FFDHE)) { |
| continue; |
| } |
| |
| if (ng.isAvailable(shc.activeProtocols) && |
| ng.isSupported(shc.activeCipherSuites) && |
| shc.algorithmConstraints.permits( |
| EnumSet.of(CryptoPrimitive.KEY_AGREEMENT), |
| ng.algorithm, namedGroupParams.get(ng))) { |
| namedGroups.add(ng); |
| } else if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Ignore inactive or disabled named group: " + ng.name); |
| } |
| } |
| |
| if (namedGroups.isEmpty()) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.warning("no available named group"); |
| } |
| |
| return null; |
| } |
| |
| int vectorLen = namedGroups.size() << 1; |
| byte[] extData = new byte[vectorLen + 2]; |
| ByteBuffer m = ByteBuffer.wrap(extData); |
| Record.putInt16(m, vectorLen); |
| for (NamedGroup namedGroup : namedGroups) { |
| Record.putInt16(m, namedGroup.id); |
| } |
| |
| // Update the context. |
| shc.conContext.serverRequestedNamedGroups = |
| Collections.<NamedGroup>unmodifiableList(namedGroups); |
| SupportedGroupsSpec spec = new SupportedGroupsSpec(namedGroups); |
| shc.handshakeExtensions.put(EE_SUPPORTED_GROUPS, spec); |
| |
| return extData; |
| } |
| } |
| |
| private static final |
| class EESupportedGroupsConsumer implements ExtensionConsumer { |
| // Prevent instantiation of this class. |
| private EESupportedGroupsConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| HandshakeMessage message, ByteBuffer buffer) throws IOException { |
| // The consuming happens in client side only. |
| ClientHandshakeContext chc = (ClientHandshakeContext)context; |
| |
| // Is it a supported and enabled extension? |
| if (!chc.sslConfig.isAvailable(EE_SUPPORTED_GROUPS)) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Ignore unavailable supported_groups extension"); |
| } |
| return; // ignore the extension |
| } |
| |
| // Parse the extension. |
| SupportedGroupsSpec spec; |
| try { |
| spec = new SupportedGroupsSpec(buffer); |
| } catch (IOException ioe) { |
| chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe); |
| return; // fatal() always throws, make the compiler happy. |
| } |
| |
| // Update the context. |
| List<NamedGroup> knownNamedGroups = |
| new ArrayList<>(spec.namedGroupsIds.length); |
| for (int id : spec.namedGroupsIds) { |
| NamedGroup ng = NamedGroup.valueOf(id); |
| if (ng != null) { |
| knownNamedGroups.add(ng); |
| } |
| } |
| |
| chc.conContext.serverRequestedNamedGroups = knownNamedGroups; |
| chc.handshakeExtensions.put(EE_SUPPORTED_GROUPS, spec); |
| |
| // No impact on session resumption. |
| } |
| } |
| } |
