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package org.bouncycastle.cms;
import java.util.HashSet;
import java.util.Set;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.teletrust.TeleTrusTObjectIdentifiers;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
public class DefaultCMSSignatureEncryptionAlgorithmFinder
implements CMSSignatureEncryptionAlgorithmFinder
{
private static final Set RSA_PKCS1d5 = new HashSet();
static
{
// BEGIN android-removed
// RSA_PKCS1d5.add(PKCSObjectIdentifiers.md2WithRSAEncryption);
// RSA_PKCS1d5.add(PKCSObjectIdentifiers.md4WithRSAEncryption);
// END android-removed
RSA_PKCS1d5.add(PKCSObjectIdentifiers.md5WithRSAEncryption);
RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha1WithRSAEncryption);
RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha224WithRSAEncryption);
RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha256WithRSAEncryption);
RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha384WithRSAEncryption);
RSA_PKCS1d5.add(PKCSObjectIdentifiers.sha512WithRSAEncryption);
// BEGIN android-removed
// RSA_PKCS1d5.add(OIWObjectIdentifiers.md4WithRSAEncryption);
// RSA_PKCS1d5.add(OIWObjectIdentifiers.md4WithRSA);
// END android-removed
RSA_PKCS1d5.add(OIWObjectIdentifiers.md5WithRSA);
RSA_PKCS1d5.add(OIWObjectIdentifiers.sha1WithRSA);
// BEGIN android-removed
// RSA_PKCS1d5.add(TeleTrusTObjectIdentifiers.rsaSignatureWithripemd128);
// RSA_PKCS1d5.add(TeleTrusTObjectIdentifiers.rsaSignatureWithripemd160);
// RSA_PKCS1d5.add(TeleTrusTObjectIdentifiers.rsaSignatureWithripemd256);
// END android-removed
}
public AlgorithmIdentifier findEncryptionAlgorithm(AlgorithmIdentifier signatureAlgorithm)
{
// RFC3370 section 3.2
if (RSA_PKCS1d5.contains(signatureAlgorithm.getAlgorithm()))
{
return new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, DERNull.INSTANCE);
}
return signatureAlgorithm;
}
}
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