ASN1OctetString.java
资源名称:security.rar [点击查看]
上传用户:lior1029
上传日期:2013-05-07
资源大小:209k
文件大小:3k
源码类别:
CA认证
开发平台:
Java
- package org.bouncycastle.asn1;
- import java.io.*;
- import java.util.*;
- public abstract class ASN1OctetString
- extends DERObject
- {
- byte[] string;
- /**
- * return an Octet String from a tagged object.
- *
- * @param obj the tagged object holding the object we want.
- * @param explicit true if the object is meant to be explicitly
- * tagged false otherwise.
- * @exception IllegalArgumentException if the tagged object cannot
- * be converted.
- */
- public static ASN1OctetString getInstance(
- ASN1TaggedObject obj,
- boolean explicit)
- {
- return getInstance(obj.getObject());
- }
- /**
- * return an Octet String from the given object.
- *
- * @param obj the object we want converted.
- * @exception IllegalArgumentException if the object cannot be converted.
- */
- public static ASN1OctetString getInstance(
- Object obj)
- {
- if (obj == null || obj instanceof ASN1OctetString)
- {
- return (ASN1OctetString)obj;
- }
- if (obj instanceof ASN1TaggedObject)
- {
- return getInstance(((ASN1TaggedObject)obj).getObject());
- }
- if (obj instanceof ASN1Sequence)
- {
- Vector v = new Vector();
- Enumeration e = ((ASN1Sequence)obj).getObjects();
- while (e.hasMoreElements())
- {
- v.addElement(e.nextElement());
- }
- return new BERConstructedOctetString(v);
- }
- throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
- }
- /**
- * @param string the octets making up the octet string.
- */
- public ASN1OctetString(
- byte[] string)
- {
- this.string = string;
- }
- public ASN1OctetString(
- DEREncodable obj)
- {
- try
- {
- ByteArrayOutputStream bOut = new ByteArrayOutputStream();
- DEROutputStream dOut = new DEROutputStream(bOut);
- dOut.writeObject(obj);
- dOut.close();
- this.string = bOut.toByteArray();
- }
- catch (IOException e)
- {
- throw new IllegalArgumentException("Error processing object : " + e.toString());
- }
- }
- public byte[] getOctets()
- {
- return string;
- }
- public int hashCode()
- {
- byte[] b = this.getOctets();
- int value = 0;
- for (int i = 0; i != b.length; i++)
- {
- value ^= (b[i] & 0xff) << (i % 4);
- }
- return value;
- }
- public boolean equals(
- Object o)
- {
- if (o == null || !(o instanceof DEROctetString))
- {
- return false;
- }
- DEROctetString other = (DEROctetString)o;
- byte[] b1 = other.getOctets();
- byte[] b2 = this.getOctets();
- if (b1.length != b2.length)
- {
- return false;
- }
- for (int i = 0; i != b1.length; i++)
- {
- if (b1[i] != b2[i])
- {
- return false;
- }
- }
- return true;
- }
- abstract void encode(DEROutputStream out)
- throws IOException;
- }