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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified.

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package org.bouncycastle.eac.operator.jcajce;

import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Signature;
import java.util.Hashtable;

import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.eac.EACObjectIdentifiers;

abstract class EACHelper
{
    private static final Hashtable sigNames = new Hashtable();

    static
    {
        sigNames.put(EACObjectIdentifiers.id_TA_RSA_v1_5_SHA_1, "SHA1withRSA");
        sigNames.put(EACObjectIdentifiers.id_TA_RSA_v1_5_SHA_256, "SHA256withRSA");
        sigNames.put(EACObjectIdentifiers.id_TA_RSA_PSS_SHA_1, "SHA1withRSAandMGF1");
        sigNames.put(EACObjectIdentifiers.id_TA_RSA_PSS_SHA_256, "SHA256withRSAandMGF1");
        sigNames.put(EACObjectIdentifiers.id_TA_RSA_v1_5_SHA_512, "SHA512withRSA");
        sigNames.put(EACObjectIdentifiers.id_TA_RSA_PSS_SHA_512, "SHA512withRSAandMGF1");

        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_1, "SHA1withECDSA");
        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_224, "SHA224withECDSA");
        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_256, "SHA256withECDSA");
        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_384, "SHA384withECDSA");
        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_512, "SHA512withECDSA");
    }

    public Signature getSignature(ASN1ObjectIdentifier oid)
        throws NoSuchProviderException, NoSuchAlgorithmException
    {
        return createSignature((String)sigNames.get(oid));
    }

    protected abstract Signature createSignature(String type)
        throws NoSuchProviderException, NoSuchAlgorithmException;
}