Example usage for org.bouncycastle.x509 X509V3CertificateGenerator getSignatureAlgNames

Introduction

In this page you can find the example usage for org.bouncycastle.x509 X509V3CertificateGenerator getSignatureAlgNames.

Prototype

public Iterator getSignatureAlgNames() 

Source Link

Document

Return an iterator of the signature names supported by the generator.

Usage

From source file:com.raphfrk.bukkit.eventlink.SSLUtils.java

License:Open Source License

static boolean generateCertificateFile(File file, int keySize, String password, String algorithm,
        String certificateAlgorithm, String certificateName, boolean forceWrite) {

    KeyPair keyPair;//  w  ww .ja v  a2s  .  c o  m
    X509Certificate cert;
    X509V3CertificateGenerator certGen = null;

    String providerName = "BC";

    if (Security.getProvider(providerName) == null) {
        Security.addProvider(new BouncyCastleProvider());
        if (Security.getProvider(providerName) == null) {
            EventLink.logger.log("Crypt libray (" + providerName + ") provider not installed");
            return false;
        }
    }

    try {
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(algorithm);

        synchronized (randomLock) {
            keyPairGenerator.initialize(keySize, random);
        }

        keyPair = KeyPairGenerator.getInstance(algorithm).generateKeyPair();

        certGen = new X509V3CertificateGenerator();

        certGen.setSerialNumber(BigInteger.valueOf(System.currentTimeMillis()));
        certGen.setIssuerDN(new X500Principal(certificateName));
        certGen.setNotBefore(new Date(System.currentTimeMillis() - 10000));
        certGen.setNotAfter(new Date(System.currentTimeMillis() + 365 * 24 * 60 * 60 * 1000));
        certGen.setSubjectDN(new X500Principal(certificateName));
        certGen.setPublicKey(keyPair.getPublic());
        certGen.setSignatureAlgorithm(certificateAlgorithm);

        cert = certGen.generate(keyPair.getPrivate(), "BC");
    } catch (IllegalArgumentException iae) {
        EventLink.logger.log("Unable to find provider (BC)");
        iae.printStackTrace();
        if (certGen != null) {
            Iterator itr = certGen.getSignatureAlgNames();
            while (itr.hasNext()) {
                System.out.println("Algorithm: " + itr.next());
            }
        }
        return false;
    } catch (NoSuchProviderException nspe) {
        EventLink.logger.log("Unable to find provider (BC)");
        nspe.printStackTrace();
        return false;
    } catch (NoSuchAlgorithmException nsa) {
        EventLink.logger.log("Unable to implement algorithm (" + certificateAlgorithm + ")");
        if (certGen != null) {
            Iterator<String> itr = certGen.getSignatureAlgNames();
            while (itr.hasNext()) {
                String algName = itr.next();
                System.out.println("Algorithm: " + algName + " " + (algName.equals(certificateAlgorithm)));
            }
        }
        nsa.printStackTrace();
        return false;
    } catch (InvalidKeyException ike) {
        EventLink.logger.log("Unable to generate key");
        ike.printStackTrace();
        return false;
    } catch (SignatureException se) {
        EventLink.logger.log("Signature error");
        se.printStackTrace();
        return false;
    } catch (CertificateEncodingException cee) {
        EventLink.logger.log("Encoding error");
        cee.printStackTrace();
        return false;
    }

    return createKeyFile(file, password, keyPair, cert, forceWrite);

}

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