org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcpkix-jdk15on Show documentation

The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

The newest version!

package org.bouncycastle.pkcs;

import java.io.ByteArrayInputStream;
import java.io.IOException;

import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.pkcs.EncryptedPrivateKeyInfo;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.operator.InputDecryptor;
import org.bouncycastle.operator.InputDecryptorProvider;
import org.bouncycastle.util.io.Streams;

/**
 * Holding class for a PKCS#8 EncryptedPrivateKeyInfo structure.
 */
public class PKCS8EncryptedPrivateKeyInfo
{
    private EncryptedPrivateKeyInfo encryptedPrivateKeyInfo;

    private static EncryptedPrivateKeyInfo parseBytes(byte[] pkcs8Encoding)
        throws IOException
    {
        try
        {
            return EncryptedPrivateKeyInfo.getInstance(ASN1Primitive.fromByteArray(pkcs8Encoding));
        }
        catch (ClassCastException e)
        {
            throw new PKCSIOException("malformed data: " + e.getMessage(), e);
        }
        catch (IllegalArgumentException e)
        {
            throw new PKCSIOException("malformed data: " + e.getMessage(), e);
        }
    }

    public PKCS8EncryptedPrivateKeyInfo(EncryptedPrivateKeyInfo encryptedPrivateKeyInfo)
    {
        this.encryptedPrivateKeyInfo = encryptedPrivateKeyInfo;
    }

    public PKCS8EncryptedPrivateKeyInfo(byte[] encryptedPrivateKeyInfo)
        throws IOException
    {
        this(parseBytes(encryptedPrivateKeyInfo));
    }

    public AlgorithmIdentifier getEncryptionAlgorithm()
    {
        return encryptedPrivateKeyInfo.getEncryptionAlgorithm();
    }

    public byte[] getEncryptedData()
    {
        return encryptedPrivateKeyInfo.getEncryptedData();
    }

    public EncryptedPrivateKeyInfo toASN1Structure()
    {
         return encryptedPrivateKeyInfo;
    }

    public byte[] getEncoded()
        throws IOException
    {
        return encryptedPrivateKeyInfo.getEncoded();
    }

    public PrivateKeyInfo decryptPrivateKeyInfo(InputDecryptorProvider inputDecryptorProvider)
        throws PKCSException
    {
        try
        {
            InputDecryptor decrytor = inputDecryptorProvider.get(encryptedPrivateKeyInfo.getEncryptionAlgorithm());

            ByteArrayInputStream encIn = new ByteArrayInputStream(encryptedPrivateKeyInfo.getEncryptedData());

            return PrivateKeyInfo.getInstance(Streams.readAll(decrytor.getInputStream(encIn)));
        }
        catch (Exception e)
        {
            throw new PKCSException("unable to read encrypted data: " + e.getMessage(), e);
        }
    }
}