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Spongy Castle is a package-rename (org.bouncycastle.* to org.spongycastle.*) of Bouncy Castle intended for the Android platform. Android unfortunately ships with a stripped-down version of Bouncy Castle, which prevents easy upgrades - Spongy Castle overcomes this and provides a full, up-to-date version of the Bouncy Castle cryptographic libs.

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package org.spongycastle.tls.crypto.impl.jcajce;

import java.security.Provider;
import java.security.Security;

import org.spongycastle.tls.HashAlgorithm;
import org.spongycastle.tls.SignatureAlgorithm;
import org.spongycastle.tls.SignatureAndHashAlgorithm;

class JcaUtils
{
    static String getJcaAlgorithmName(SignatureAndHashAlgorithm algorithm)
    {
        return (HashAlgorithm.getName(algorithm.getHash()) + "WITH"
            + SignatureAlgorithm.getName(algorithm.getSignature())).toUpperCase();
    }

    static boolean isSunMSCAPIProviderActive()
    {
        return null != Security.getProvider("SunMSCAPI");
    }

    static boolean isSunMSCAPIProvider(Provider provider)
    {
        return null != provider && isSunMSCAPIProviderName(provider.getName());
    }

    static boolean isSunMSCAPIProviderName(String providerName)
    {
        return "SunMSCAPI".equals(providerName);
    }
}