1package org.bouncycastle.asn1; 2 3import java.io.IOException; 4 5public abstract class ASN1Object 6 extends DERObject 7{ 8 /** 9 * Create a base ASN.1 object from a byte stream. 10 * 11 * @param data the byte stream to parse. 12 * @return the base ASN.1 object represented by the byte stream. 13 * @exception IOException if there is a problem parsing the data. 14 */ 15 public static ASN1Object fromByteArray(byte[] data) 16 throws IOException 17 { 18 ASN1InputStream aIn = new ASN1InputStream(data); 19 20 try 21 { 22 return (ASN1Object)aIn.readObject(); 23 } 24 catch (ClassCastException e) 25 { 26 throw new IOException("cannot recognise object in stream"); 27 } 28 } 29 30 public final boolean equals(Object o) 31 { 32 if (this == o) 33 { 34 return true; 35 } 36 37 return (o instanceof DEREncodable) && asn1Equals(((DEREncodable)o).getDERObject()); 38 } 39 40 public abstract int hashCode(); 41 42 abstract void encode(DEROutputStream out) throws IOException; 43 44 abstract boolean asn1Equals(DERObject o); 45} 46