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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.8 and up. The APIs are designed primarily to be used in conjunction with the BC LTS provider but may also be used with other providers providing cryptographic services.

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package org.bouncycastle.its;

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

import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.nist.NISTObjectIdentifiers;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.HashAlgorithm;

public class ITSAlgorithmUtils
{
    private static final Map algoMap = new HashMap();


    static
    {
        algoMap.put(NISTObjectIdentifiers.id_sha256, HashAlgorithm.sha256);
        algoMap.put(NISTObjectIdentifiers.id_sha384, HashAlgorithm.sha384);
    }

    public static HashAlgorithm getHashAlgorithm(ASN1ObjectIdentifier oid)
    {
        return algoMap.get(oid);
    }
}