Keygen Intellij !!better!! Review

// Serial number info.set(X509CertInfo.SERIAL_NUMBER, new CertificateSerialNumber(serial));

import java.security.*;

// Public key info.set(X509CertInfo.KEY, new CertificateX509Key(keyPair.getPublic())); keygen intellij

// ---- 2️⃣ Load (or create) a PKCS#12 keystore ---- KeyStore ks = KeyStore.getInstance("PKCS12"); if (Files.exists(filePath)) try (InputStream in = Files.newInputStream(filePath)) ks.load(in, password); else ks.load(null, null); // create empty keystore

// ---- 1️⃣ Create a minimal self‑signed X.509 certificate ---- long now = System.currentTimeMillis(); Date notBefore = new Date(now - 1000L * 60 * 60); // 1h ago Date notAfter = new Date(now + (365L * 24 * 60 * 60 * 1000)); // +1 year // Serial number info

public static X509Certificate generateSelfSignedCertificate( KeyPair keyPair, X500Principal subject, BigInteger serial, Date notBefore, Date notAfter, String sigAlg) throws Exception

public static void main(String[] args) throws Exception KeyPair kp = generate("secp256r1"); System.out.println("EC Public (Base64): " + java.util.Base64.getEncoder().encodeToString(kp.getPublic().getEncoded())); // Serial number info.set(X509CertInfo.SERIAL_NUMBER

<dependencies> <!-- Bouncy Castle Provider --> <dependency> <groupId>org.bouncycastle</groupId> <artifactId>bcprov-jdk18on</artifactId> <version>1.78</version> </dependency>