Example usage for java.security.interfaces ECKey getParams

Introduction

In this page you can find the example usage for java.security.interfaces ECKey getParams.

Prototype

ECParameterSpec getParams();

Source Link

Document

Returns the domain parameters associated with this key.

Usage

From source file:KeystoreGeneratorTest.java

@Test
public void test() throws Exception {
    File dir = null;//from   w ww .  java2 s  . c o m
    FileInputStream fis = null;
    try {
        dir = Files.createTempDir();
        File keystoreFile = new File(dir, KEYSTORE_NAME);

        String config = GSON.toJson(ImmutableMap.builder().put("password", KEYSTORE_PASSWORD)
                .put("entries", ImmutableList.builder()
                        .add(ImmutableMap.builder().put("label", "rsatest1").put("algorithm", "SHA256WithRSA")
                                .put("keyAlgorithm", "RSA").put("rsaKeySize", "2048").build())
                        .add(ImmutableMap.builder().put("label", "ecdsatest1")
                                .put("algorithm", "SHA256WithECDSA").put("keyAlgorithm", "ECDSA")
                                .put("ecdsaNamedCurve", "secp192r1").build())
                        .add(ImmutableMap.builder().put("label", "ecdsatest2")
                                .put("algorithm", "SHA256WithECDSA").put("keyAlgorithm", "ECDSA")
                                .put("ecdsaNamedCurve", "secp256r1").build())
                        .build())
                .build());
        // generate
        KeyStore store = new KeystoreGenerator().generate(GSON.fromJson(config, KeystoreConfig.class));
        // write to disk
        try (FileOutputStream out = new FileOutputStream(keystoreFile)) {
            store.store(out, KEYSTORE_PASSWORD.toCharArray());
        }
        // load
        fis = new FileInputStream(keystoreFile);
        KeyStore ks = KeyStore.getInstance("PKCS12", "SunJSSE");
        ks.load(fis, KEYSTORE_PASSWORD.toCharArray());
        Enumeration<String> aliases = ks.aliases();
        while (aliases.hasMoreElements()) {
            String al = aliases.nextElement();
            System.out.println("Label: [" + al + "]");
            X509Certificate cert = (X509Certificate) ks.getCertificate(al);
            System.out.println("  Algorithm: [" + cert.getSigAlgName() + "]");
            PublicKey key = cert.getPublicKey();
            if (key instanceof ECKey) {
                ECKey eckey = (ECKey) key;
                ECParameterSpec spec = eckey.getParams();
                System.out.println("  EC spec: [" + spec + "]");
            }
        }
    } finally {
        closeQuietly(fis);
        FileUtils.deleteDirectory(dir);
    }
}

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