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[FEATURE] Эллиптическая криптография. Создание CA, запись сертификатов на диск

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Gravit 2019-07-01 22:20:05 +07:00
parent 2e5295dbaf
commit aebb96b32e
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GPG key ID: 061981E1E85D3216
1 changed files with 51 additions and 1 deletions
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52
LaunchServer/src/main/java/pro/gravit/launchserver/manangers/CertificateManager.java
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@ -1,22 +1,41 @@
package pro.gravit.launchserver.manangers;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x500.X500NameBuilder;
import org.bouncycastle.asn1.x500.style.BCStyle;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.cert.CertIOException;
import org.bouncycastle.cert.X509CertificateHolder;
import org.bouncycastle.cert.X509v3CertificateBuilder;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.crypto.params.ECKeyParameters;
import org.bouncycastle.crypto.util.PrivateKeyFactory;
import org.bouncycastle.jce.ECNamedCurveTable;
import org.bouncycastle.jce.spec.ECParameterSpec;
import org.bouncycastle.openssl.PEMWriter;
import org.bouncycastle.operator.ContentSigner;
import org.bouncycastle.operator.DefaultDigestAlgorithmIdentifierFinder;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.operator.bc.BcECContentSignerBuilder;
import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
import org.bouncycastle.util.io.pem.PemObject;
import org.bouncycastle.util.io.pem.PemWriter;
import pro.gravit.utils.helper.IOHelper;
import pro.gravit.utils.helper.SecurityHelper;
import java.io.FileWriter;
import java.io.IOException;
import java.math.BigInteger;
import java.security.PublicKey;
import java.nio.file.Path;
import java.security.*;
import java.security.cert.CertificateException;
import java.security.spec.ECGenParameterSpec;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.temporal.ChronoUnit;
import java.util.Date;
@ -47,4 +66,35 @@ public X509CertificateHolder generateCertificate(String subjectName, PublicKey s
return v3CertGen.build(sigGen);
}
public void generateCA() throws NoSuchAlgorithmException, IOException, OperatorCreationException, InvalidAlgorithmParameterException {
ECGenParameterSpec ecGenSpec = new ECGenParameterSpec("secp384r1");
KeyPairGenerator generator = KeyPairGenerator.getInstance("EC");
generator.initialize(ecGenSpec, SecurityHelper.newRandom());
KeyPair pair = generator.generateKeyPair();
LocalDateTime startDate = LocalDate.now().atStartOfDay();
X509v3CertificateBuilder builder= new X509v3CertificateBuilder(
new X500Name("CN=ca"),
new BigInteger("0"),
Date.from(startDate.atZone(ZoneId.systemDefault()).toInstant()),
Date.from(startDate.plusDays(3650).atZone(ZoneId.systemDefault()).toInstant()),
new X500Name("CN=ca"),
SubjectPublicKeyInfo.getInstance(pair.getPublic().getEncoded()));
JcaContentSignerBuilder csBuilder= new JcaContentSignerBuilder("SHA256WITHECDSA");
ContentSigner signer = csBuilder.build(pair.getPrivate());
ca = builder.build(signer);
caKey = PrivateKeyFactory.createKey(pair.getPrivate().getEncoded());
}
public void writePrivateKey(Path file, PrivateKey privateKey) throws IOException {
try (PemWriter writer = new PemWriter(IOHelper.newWriter(file))) {
writer.writeObject(new PemObject("PRIVATE KEY", privateKey.getEncoded()));
}
}
public void writeCertificate(Path file, X509CertificateHolder holder) throws IOException {
try (PemWriter writer = new PemWriter(IOHelper.newWriter(file))) {
writer.writeObject(new PemObject("CERTIFICATE", holder.toASN1Structure().getEncoded()));
}
}
}