Example usage for java.security Security getProviders

Introduction

In this page you can find the example usage for java.security Security getProviders.

Prototype

public static Provider[] getProviders(Map<String, String> filter) 

Source Link

Document

Returns an array containing all installed providers that satisfy the specified selection criteria, or null if no such providers have been installed.

Usage

From source file:Main.java

/**
 * Verification: is algorithm supported or not
 *
 * @param algorithm/* w w  w  .j  ava  2  s .c o  m*/
 * @param service
 * @return
 */
public static Provider isSupport(String algorithm, String service) {
    try {
        Provider[] provs = Security.getProviders(service.concat(".").concat(algorithm));
        if (provs == null) {
            return null;
        }
        return (provs.length == 0 ? null : provs[0]);
    } catch (Exception e) {
        return null;
    }
}

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From source file:org.apache.fop.pdf.PDFEncryptionManager.java

/**
 * Checks whether the necessary algorithms are available.
 * @return boolean True if all necessary algorithms are present
 *///from   w  w w .  ja  v a  2 s  .  c  o m
public static boolean checkAvailableAlgorithms() {
    if (!isJCEAvailable()) {
        return false;
    } else {
        Provider[] providers;
        providers = Security.getProviders("Cipher.RC4");
        if (providers == null) {
            LOG.warn("Cipher provider for RC4 not available.");
            return false;
        }
        providers = Security.getProviders("MessageDigest.MD5");
        if (providers == null) {
            LOG.warn("MessageDigest provider for MD5 not available.");
            return false;
        }
        return true;
    }
}

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From source file:org.cesecore.certificates.util.AlgorithmTools.java

/** Check if the curve name is known by the first found PKCS#11 provider or default (if none was found)*/
public static boolean isNamedECKnownInDefaultProvider(String ecNamedCurveBc) {
    final Provider[] providers = Security.getProviders("KeyPairGenerator.EC");
    String providerName = providers[0].getName();
    try {/*from w  ww .  java  2s .  c  o m*/
        for (Provider ecProvider : providers) {
            //This will list something like: SunPKCS11-NSS, BC, SunPKCS11-<library>-slot<slotnumber>
            if (log.isDebugEnabled()) {
                log.debug("Found EC capable provider named: " + ecProvider.getName());
            }
            if (ecProvider.getName().startsWith("SunPKCS11-")
                    && !ecProvider.getName().startsWith("SunPKCS11-NSS")) {
                providerName = ecProvider.getName();
                break;
            }
        }
        final KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", providerName);
        kpg.initialize(new ECGenParameterSpec(ecNamedCurveBc));
        return true;
    } catch (InvalidAlgorithmParameterException e) {
        if (log.isDebugEnabled()) {
            log.debug(ecNamedCurveBc + " is not available in provider " + providerName);
        }
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(
                "EC capable provider " + providerName + " could no longer handle elliptic curve algorithm..",
                e);
    } catch (NoSuchProviderException e) {
        throw new RuntimeException("EC capable provider " + providerName + " disappeard unexpectedly.", e);
    }
    return false;
}

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From source file:org.hyperic.util.security.DbKeyStore.java

/**
 * if {@link org.hyperic.hq.context.Bootstrap} exists it will return a DbKeyStore, or else it
 * returns the regular/*  w ww. ja  v  a 2 s  . co  m*/
 * {@link KeyStore}
 */
public static KeyStore getInstance(String type, AtomicBoolean isDb) throws KeyStoreException {
    DbKeystoreManager dbKeystoreManager = null;
    try {
        // scottmf: Not happy about this, when the agent is springified we can remove this.
        Class<?> bootstrapClass = Class.forName("org.hyperic.hq.context.Bootstrap");
        Method method = bootstrapClass.getMethod("getBean", String.class);
        dbKeystoreManager = (DbKeystoreManager) method.invoke(null, "dbKeystoreManager");
    } catch (Exception e) {
        log.debug("could not instantiate DbKeystoreManager class: " + e, e);
    }
    if (dbKeystoreManager == null) {
        isDb.set(false);
        return KeyStore.getInstance(type);
    }
    try {
        final DbKeyStoreSpi dbKeyStoreSpi = new DbKeyStoreSpi(dbKeystoreManager);
        final Provider[] providers = Security.getProviders("KeyStore." + type);
        isDb.set(true);
        return new DbKeyStore(dbKeyStoreSpi, providers[0], type);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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