TKSS-1089: EC key pair generation based on OpenSSL

kona-crypto/src/jmh/java/com/tencent/kona/crypto/perf/ECKeyPairGenPerfTest.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2025, THL A29 Limited, a Tencent company. 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.
+ *
+ * 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.
+ */
+
+package com.tencent.kona.crypto.perf;
+
+import com.tencent.kona.crypto.TestUtils;
+import org.openjdk.jmh.annotations.*;
+
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.spec.ECGenParameterSpec;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * The JMH-based performance test for SM2 key pair generation.
+ */
+@Warmup(iterations = 5, time = 5)
+@Measurement(iterations = 5, time = 5)
+@Fork(value = 2, jvmArgsAppend = {"-server", "-Xms2048M", "-Xmx2048M", "-XX:+UseG1GC"})
+@Threads(1)
+@BenchmarkMode(Mode.Throughput)
+@OutputTimeUnit(TimeUnit.SECONDS)
+public class ECKeyPairGenPerfTest {
+
+    static {
+        TestUtils.addProviders();
+    }
+
+    @State(Scope.Benchmark)
+    public static class KeyPairGenHolder {
+
+        @Param({"SunEC", "KonaCrypto-Native", "KonaCrypto-NativeOneShot"})
+        String provider;
+
+        @Param({"secp256r1", "secp384r1", "secp521r1"})
+        String curve;
+
+        KeyPairGenerator keyPairGenerator;
+
+        @Setup
+        public void setup() throws Exception {
+            keyPairGenerator = KeyPairGenerator.getInstance("EC", provider);
+            keyPairGenerator.initialize(new ECGenParameterSpec(curve));
+        }
+    }
+
+    @Benchmark
+    public KeyPair genKeyPair(KeyPairGenHolder holder) {
+        return holder.keyPairGenerator.generateKeyPair();
+    }
+}

kona-crypto/src/main/java/com/tencent/kona/crypto/KonaCryptoNativeOneShotProvider.java

@@ -56,13 +56,14 @@ private static void putEntries(Provider provider) {
         KonaCryptoProvider.putSMPBES2Entries(provider);
         KonaCryptoProvider.putECEntries(provider);
         SunRsaSignEntries.putEntries(provider);
+        putECEntries(provider);
     }
 
     private static void putSMEntries(Provider provider) {
         provider.put("Cipher.SM4 SupportedPaddings", "NOPADDING|PKCS7PADDING");
         provider.put("Cipher.SM4 SupportedModes", "CBC|CTR|ECB|GCM");
         provider.put("Cipher.SM4",
-                "com.tencent.kona.crypto.provider.nativeImpl.SM4Cipher$NativeOneShot");;
+                "com.tencent.kona.crypto.provider.nativeImpl.SM4Cipher$NativeOneShot");
         provider.put("AlgorithmParameters.SM4",
                 "com.tencent.kona.crypto.provider.SM4Parameters");
         provider.put("AlgorithmParameterGenerator.SM4",
@@ -91,6 +92,11 @@ private static void putSMEntries(Provider provider) {
         provider.put("KeyFactory.SM2", "com.tencent.kona.crypto.provider.SM2KeyFactory");
     }
 
+    private static void putECEntries(Provider provider) {
+        provider.put("KeyPairGenerator.EC",
+                "com.tencent.kona.crypto.provider.nativeImpl.KonaOneShotECKeyPairGenerator");
+    }
+
     public static KonaCryptoNativeOneShotProvider instance() {
         if (instance == null) {
             instance = new KonaCryptoNativeOneShotProvider();

kona-crypto/src/main/java/com/tencent/kona/crypto/KonaCryptoNativeProvider.java

@@ -56,6 +56,7 @@ private static void putEntries(Provider provider) {
         KonaCryptoProvider.putSMPBES2Entries(provider);
         KonaCryptoProvider.putECEntries(provider);
         SunRsaSignEntries.putEntries(provider);
+        putECEntries(provider);
     }
 
     private static void putSMEntries(Provider provider) {
@@ -91,6 +92,11 @@ private static void putSMEntries(Provider provider) {
         provider.put("KeyFactory.SM2", "com.tencent.kona.crypto.provider.SM2KeyFactory");
     }
 
+    private static void putECEntries(Provider provider) {
+        provider.put("KeyPairGenerator.EC",
+                "com.tencent.kona.crypto.provider.nativeImpl.KonaECKeyPairGenerator");
+    }
+
     public static KonaCryptoNativeProvider instance() {
         if (instance == null) {
             instance = new KonaCryptoNativeProvider();

kona-crypto/src/main/java/com/tencent/kona/crypto/provider/nativeImpl/KonaECKeyPairGenerator.java

@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 2009, 2024, 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 com.tencent.kona.crypto.provider.nativeImpl;
+
+import com.tencent.kona.crypto.util.Constants;
+import com.tencent.kona.crypto.util.Sweeper;
+import com.tencent.kona.sun.security.ec.ECPrivateKeyImpl;
+import com.tencent.kona.sun.security.ec.ECPublicKeyImpl;
+import com.tencent.kona.sun.security.jca.JCAUtil;
+import com.tencent.kona.sun.security.util.ECUtil;
+import com.tencent.kona.sun.security.util.SecurityProviderConstants;
+
+import java.math.BigInteger;
+import java.security.*;
+import java.security.spec.*;
+import java.util.*;
+
+import static com.tencent.kona.crypto.util.Constants.*;
+
+/**
+ * EC keypair generator.
+ * Standard algorithm, minimum key length is 112 bits, maximum is 571 bits.
+ *
+ * @since 1.7
+ */
+public final class KonaECKeyPairGenerator extends KeyPairGeneratorSpi {
+
+    private static final int KEY_SIZE_MIN = 112; // min bits (see ecc_impl.h)
+    private static final int KEY_SIZE_MAX = 571; // max bits (see ecc_impl.h)
+
+    // used to seed the keypair generator
+    private SecureRandom random;
+
+    // size of the key to generate, KEY_SIZE_MIN <= keySize <= KEY_SIZE_MAX
+    private int keySize;
+
+    // parameters specified via init, if any
+    private AlgorithmParameterSpec params = null;
+
+    private static final Sweeper SWEEPER = Sweeper.instance();
+    private NativeECKeyPairGen keyPairGen = null;
+
+    /**
+     * Constructs a new ECKeyPairGenerator.
+     */
+    public KonaECKeyPairGenerator() {
+        // initialize to default in case the app does not call initialize()
+        initialize(SecurityProviderConstants.DEF_EC_KEY_SIZE, null);
+    }
+
+    // initialize the generator. See JCA doc
+    @Override
+    public void initialize(int keySize, SecureRandom random) {
+        keyPairGen = null;
+
+        checkKeySize(keySize);
+        this.params = ECUtil.getECParameterSpec(keySize);
+        if (params == null) {
+            throw new InvalidParameterException(
+                    "No EC parameters available for key size " + keySize + " bits");
+        }
+        this.random = random;
+
+        byte[] encodedParams = ECUtil.encodeECParameterSpec((ECParameterSpec) params);
+        int curveNID = Constants.getNID(encodedParams);
+        keyPairGen = new NativeECKeyPairGen(curveNID);
+        SWEEPER.register(this, new SweepNativeRef(keyPairGen));
+    }
+
+    // second initialize method. See JCA doc
+    @Override
+    public void initialize(AlgorithmParameterSpec params, SecureRandom random)
+            throws InvalidAlgorithmParameterException {
+        keyPairGen = null;
+
+        ECParameterSpec ecSpec = null;
+
+        if (params instanceof ECParameterSpec) {
+            ECParameterSpec ecParams = (ECParameterSpec) params;
+            ecSpec = ECUtil.getECParameterSpec(ecParams);
+            if (ecSpec == null) {
+                throw new InvalidAlgorithmParameterException(
+                        "Curve not supported: " + params);
+            }
+        } else if (params instanceof ECGenParameterSpec) {
+            String name = ((ECGenParameterSpec) params).getName();
+            ecSpec = ECUtil.getECParameterSpec(name);
+            if (ecSpec == null) {
+                throw new InvalidAlgorithmParameterException(
+                        "Unknown curve name: " + name);
+            }
+        } else {
+            throw new InvalidAlgorithmParameterException(
+                    "ECParameterSpec or ECGenParameterSpec required for EC");
+        }
+
+        // Not all known curves are supported by the native implementation
+        byte[] encodedParams = ECUtil.encodeECParameterSpec(ecSpec);
+        int curveNID = ensureCurveIsSupported(encodedParams, ecSpec);
+
+        keyPairGen = new NativeECKeyPairGen(curveNID);
+        SWEEPER.register(this, new SweepNativeRef(keyPairGen));
+        this.params = ecSpec;
+
+        this.keySize = ecSpec.getCurve().getField().getFieldSize();
+        this.random = random;
+    }
+
+    private static int ensureCurveIsSupported(
+            byte[] encodedParams, ECParameterSpec ecSpec)
+            throws InvalidAlgorithmParameterException {
+
+        int curveNID = Constants.getNID(encodedParams);
+        if (curveNID == -1) {
+            throw new InvalidAlgorithmParameterException(
+                    "Curve not supported: " + ecSpec.toString());
+        }
+
+        // Check if ecSpec is a valid curve
+        AlgorithmParameters ecParams = ECUtil.getECParameters();
+        try {
+            ecParams.init(ecSpec);
+        } catch (InvalidParameterSpecException ex) {
+            throw new InvalidAlgorithmParameterException(
+                    "Curve not supported: " + ecSpec.toString());
+        }
+
+        return curveNID;
+    }
+
+    // generate the keypair. See JCA doc
+    @Override
+    public KeyPair generateKeyPair() {
+
+        if (random == null) {
+            random = JCAUtil.getSecureRandom();
+        }
+
+        try {
+            Optional<KeyPair> kp = generateKeyPairImpl(random);
+            if (kp.isPresent()) {
+                return kp.get();
+            }
+        } catch (Exception ex) {
+            throw new ProviderException(ex);
+        }
+        throw new ProviderException("Curve not supported: " +
+                params.toString());
+    }
+
+    private Optional<KeyPair> generateKeyPairImpl(SecureRandom random)
+            throws Exception {
+        Object[] keyBytes = keyPairGen.genKeyPair();
+
+        ECParameterSpec ecParams = (ECParameterSpec) params;
+
+        BigInteger s = new BigInteger(1, (byte[]) keyBytes[0]);
+        PrivateKey privateKey = new ECPrivateKeyImpl(s, ecParams);
+
+        byte[] pubKey = (byte[]) keyBytes[1];
+        ECPoint w = ECUtil.decodePoint(pubKey, ecParams.getCurve());
+        PublicKey publicKey = new ECPublicKeyImpl(w, ecParams);
+
+        return Optional.of(new KeyPair(publicKey, privateKey));
+    }
+
+    private void checkKeySize(int keySize) throws InvalidParameterException {
+        if (keySize < KEY_SIZE_MIN) {
+            throw new InvalidParameterException
+                    ("Key size must be at least " + KEY_SIZE_MIN + " bits");
+        }
+        if (keySize > KEY_SIZE_MAX) {
+            throw new InvalidParameterException
+                    ("Key size must be at most " + KEY_SIZE_MAX + " bits");
+        }
+        this.keySize = keySize;
+    }
+}