1 package org.bouncycastle.asn1; 2 3 import java.io.IOException; 4 import java.math.BigInteger; 5 6 import org.bouncycastle.util.Arrays; 7 8 public class DEREnumerated 9 extends ASN1Object 10 { 11 byte[] bytes; 12 13 /** 14 * return an integer from the passed in object 15 * 16 * @exception IllegalArgumentException if the object cannot be converted. 17 */ 18 public static DEREnumerated getInstance( 19 Object obj) 20 { 21 if (obj == null || obj instanceof DEREnumerated) 22 { 23 return (DEREnumerated)obj; 24 } 25 26 throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); 27 } 28 29 /** 30 * return an Enumerated from a tagged object. 31 * 32 * @param obj the tagged object holding the object we want 33 * @param explicit true if the object is meant to be explicitly 34 * tagged false otherwise. 35 * @exception IllegalArgumentException if the tagged object cannot 36 * be converted. 37 */ 38 public static DEREnumerated getInstance( 39 ASN1TaggedObject obj, 40 boolean explicit) 41 { 42 DERObject o = obj.getObject(); 43 44 if (explicit || o instanceof DEREnumerated) 45 { 46 return getInstance(o); 47 } 48 else 49 { 50 return new DEREnumerated(((ASN1OctetString)o).getOctets()); 51 } 52 } 53 54 public DEREnumerated( 55 int value) 56 { 57 bytes = BigInteger.valueOf(value).toByteArray(); 58 } 59 60 public DEREnumerated( 61 BigInteger value) 62 { 63 bytes = value.toByteArray(); 64 } 65 66 public DEREnumerated( 67 byte[] bytes) 68 { 69 this.bytes = bytes; 70 } 71 72 public BigInteger getValue() 73 { 74 return new BigInteger(bytes); 75 } 76 77 void encode( 78 DEROutputStream out) 79 throws IOException 80 { 81 out.writeEncoded(ENUMERATED, bytes); 82 } 83 84 boolean asn1Equals( 85 DERObject o) 86 { 87 if (!(o instanceof DEREnumerated)) 88 { 89 return false; 90 } 91 92 DEREnumerated other = (DEREnumerated)o; 93 94 return Arrays.areEqual(this.bytes, other.bytes); 95 } 96 97 public int hashCode() 98 { 99 return Arrays.hashCode(bytes); 100 } 101 } 102
