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Java - Code Samples

 Sample 1. Code Sample / Example / Snippet of java.math.BigInteger

    private X509Certificate generateRootCertificate(String commonName, Date notBefore, Date notAfter) throws Exception {

X500Name issuer = new X500Name(commonName);

BigInteger serial = BigInteger.probablePrime(16, new Random());



SubjectPublicKeyInfo pubKeyInfo = convertToSubjectPublicKeyInfo(m_caKey.getPublic());



X509v3CertificateBuilder builder = new X509v3CertificateBuilder(issuer, serial, notBefore, notAfter, issuer, pubKeyInfo);

builder.addExtension(new Extension(Extension.basicConstraints, true, new DEROctetString(new BasicConstraints(true))));



X509CertificateHolder certHolder = builder.build(new JcaContentSignerBuilder(SIGNATURE_ALGORITHM).build(m_caKey.getPrivate()));

return new JcaX509CertificateConverter().getCertificate(certHolder);

}


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