IdentityDescription.java

package hamaster.gradesign;

import hamaster.gradesgin.ibe.IBEPrivateKey;
import hamaster.gradesgin.ibe.IBEPublicParameter;
import hamaster.gradesgin.ibe.io.SecureByteArrayOutputStream;
import hamaster.gradesgin.ibs.IBSCertificate;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.Serializable;

/**
 * 身份描述信息 包含身份字符串和私钥
 * @author <a href="mailto:wangyeee@gmail.com">Wang Ye</a>
 */
public class IdentityDescription implements Serializable, SecureConstraints {
	private static final long serialVersionUID = -9068795518061465393L;

	/**
	 * 用户私钥
	 */
	private IBEPrivateKey privateKey;

	/**
	 * 用户签名证书
	 */
	private IBSCertificate certificate;

	/**
	 * 用户所属于的IBE系统的公共参数
	 */
	private IBEPublicParameter systemPublicParameter;

	public IdentityDescription() {
	}

	/**
	 * <pre>将身份描述信息转换为字节表示形式：
	 * 系统公共参数
	 * 用户私钥（不包含所有者身份和椭圆函数参数）
	 * 签名证书</pre>
	 * @return 字节形式表示的身份描述信息
	 */
	public byte[] toByteArray() {
		ByteArrayOutputStream out = new SecureByteArrayOutputStream();
		byte[] id = null;
		try {
			systemPublicParameter.writeExternal(out);
			out.write(privateKey.getrID());
			out.write(privateKey.gethID());
			certificate.writeExternal(out);
			id = out.toByteArray();
		} catch (IOException e) {
		} finally {
			try {
				out.close();
			} catch (IOException e) {
			}
		}
		return id;
	}

	public IBEPrivateKey getPrivateKey() {
		return privateKey;
	}

	public void setPrivateKey(IBEPrivateKey privateKey) {
		this.privateKey = privateKey;
	}

	public IBSCertificate getCertificate() {
		return certificate;
	}

	public void setCertificate(IBSCertificate certificate) {
		this.certificate = certificate;
	}

	public IBEPublicParameter getSystemPublicParameter() {
		return systemPublicParameter;
	}

	public void setSystemPublicParameter(IBEPublicParameter systemPublicParameter) {
		this.systemPublicParameter = systemPublicParameter;
	}
}