| package org.bouncycastle.asn1; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.bouncycastle.util.Arrays; |
| import org.bouncycastle.util.encoders.Hex; |
| |
| public abstract class ASN1OctetString |
| extends ASN1Primitive |
| 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) |
| { |
| ASN1Primitive o = obj.getObject(); |
| |
| if (explicit || o instanceof ASN1OctetString) |
| { |
| return getInstance(o); |
| } |
| else |
| { |
| return BEROctetString.fromSequence(ASN1Sequence.getInstance(o)); |
| } |
| } |
| |
| /** |
| * 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; |
| } |
| else if (obj instanceof byte[]) |
| { |
| try |
| { |
| return ASN1OctetString.getInstance(ASN1Primitive.fromByteArray((byte[])obj)); |
| } |
| catch (IOException e) |
| { |
| throw new IllegalArgumentException("failed to construct OCTET STRING from byte[]: " + e.getMessage()); |
| } |
| } |
| else if (obj instanceof ASN1Encodable) |
| { |
| ASN1Primitive primitive = ((ASN1Encodable)obj).toASN1Primitive(); |
| |
| if (primitive instanceof ASN1OctetString) |
| { |
| return (ASN1OctetString)primitive; |
| } |
| } |
| |
| 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 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( |
| ASN1Primitive o) |
| { |
| if (!(o instanceof ASN1OctetString)) |
| { |
| return false; |
| } |
| |
| ASN1OctetString other = (ASN1OctetString)o; |
| |
| return Arrays.areEqual(string, other.string); |
| } |
| |
| public ASN1Primitive getLoadedObject() |
| { |
| return this.toASN1Primitive(); |
| } |
| |
| ASN1Primitive toDERObject() |
| { |
| return new DEROctetString(string); |
| } |
| |
| ASN1Primitive toDLObject() |
| { |
| return new DEROctetString(string); |
| } |
| |
| abstract void encode(ASN1OutputStream out) |
| throws IOException; |
| |
| public String toString() |
| { |
| return "#"+new String(Hex.encode(string)); |
| } |
| } |