org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo.java Source code

Introduction

Here is the source code for org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo.java

Source

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);
        }
    }
}