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package org.bouncycastle.pkcs.jcajce;

import java.util.HashMap;
import java.util.Map;

import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
import org.bouncycastle.asn1.nist.NISTObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;

class JceUtils
{
    private static final Map PRFS = new HashMap();

    static
    {
        PRFS.put(PKCSObjectIdentifiers.id_hmacWithSHA1, "PBKDF2withHMACSHA1");
        PRFS.put(PKCSObjectIdentifiers.id_hmacWithSHA256, "PBKDF2withHMACSHA256");
        PRFS.put(PKCSObjectIdentifiers.id_hmacWithSHA512, "PBKDF2withHMACSHA512");
        PRFS.put(PKCSObjectIdentifiers.id_hmacWithSHA224, "PBKDF2withHMACSHA224");
        PRFS.put(PKCSObjectIdentifiers.id_hmacWithSHA384, "PBKDF2withHMACSHA384");
        PRFS.put(NISTObjectIdentifiers.id_hmacWithSHA3_224, "PBKDF2withHMACSHA3-224");
        PRFS.put(NISTObjectIdentifiers.id_hmacWithSHA3_256, "PBKDF2withHMACSHA3-256");
        PRFS.put(NISTObjectIdentifiers.id_hmacWithSHA3_384, "PBKDF2withHMACSHA3-384");
        PRFS.put(NISTObjectIdentifiers.id_hmacWithSHA3_512, "PBKDF2withHMACSHA3-512");
        PRFS.put(CryptoProObjectIdentifiers.gostR3411Hmac, "PBKDF2withHMACGOST3411");
    }

    static String getAlgorithm(ASN1ObjectIdentifier algorithm)
    {
        if (!PRFS.containsKey(algorithm))
        {
            throw new IllegalStateException("no prf for algorithm: " + algorithm);
        }

        return ((String)PRFS.get(algorithm));
    }
}