| package org.bouncycastle.asn1; |
| |
| import org.bouncycastle.util.encoders.Hex; |
| import org.bouncycastle.util.Arrays; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Enumeration; |
| import java.util.Vector; |
| |
| public abstract class ASN1OctetString |
| extends ASN1Object |
| implements ASN1OctetStringParser |
| { |
| 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) |
| { |
| if (string == null) |
| { |
| throw new NullPointerException("string cannot be null"); |
| } |
| this.string = string; |
| } |
| |
| public ASN1OctetString( |
| DEREncodable obj) |
| { |
| try |
| { |
| this.string = obj.getDERObject().getEncoded(ASN1Encodable.DER); |
| } |
| catch (IOException e) |
| { |
| throw new IllegalArgumentException("Error processing object : " + e.toString()); |
| } |
| } |
| |
| public InputStream getOctetStream() |
| { |
| return new ByteArrayInputStream(string); |
| } |
| |
| public ASN1OctetStringParser parser() |
| { |
| return this; |
| } |
| |
| public byte[] getOctets() |
| { |
| return string; |
| } |
| |
| public int hashCode() |
| { |
| return Arrays.hashCode(this.getOctets()); |
| } |
| |
| boolean asn1Equals( |
| DERObject o) |
| { |
| if (!(o instanceof ASN1OctetString)) |
| { |
| return false; |
| } |
| |
| ASN1OctetString other = (ASN1OctetString)o; |
| |
| return Arrays.areEqual(string, other.string); |
| } |
| |
| abstract void encode(DEROutputStream out) |
| throws IOException; |
| |
| public String toString() |
| { |
| return "#"+new String(Hex.encode(string)); |
| } |
| } |