1package org.bouncycastle.asn1.x509; 2 3import org.bouncycastle.asn1.ASN1Encodable; 4import org.bouncycastle.asn1.ASN1EncodableVector; 5import org.bouncycastle.asn1.ASN1Sequence; 6import org.bouncycastle.asn1.ASN1TaggedObject; 7import org.bouncycastle.asn1.DERObject; 8import org.bouncycastle.asn1.DERObjectIdentifier; 9import org.bouncycastle.asn1.DERSequence; 10 11import java.util.Enumeration; 12import java.util.Hashtable; 13import java.util.Vector; 14 15/** 16 * The extendedKeyUsage object. 17 * <pre> 18 * extendedKeyUsage ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId 19 * </pre> 20 */ 21public class ExtendedKeyUsage 22 extends ASN1Encodable 23{ 24 Hashtable usageTable = new Hashtable(); 25 ASN1Sequence seq; 26 27 public static ExtendedKeyUsage getInstance( 28 ASN1TaggedObject obj, 29 boolean explicit) 30 { 31 return getInstance(ASN1Sequence.getInstance(obj, explicit)); 32 } 33 34 public static ExtendedKeyUsage getInstance( 35 Object obj) 36 { 37 if (obj instanceof ExtendedKeyUsage) 38 { 39 return (ExtendedKeyUsage)obj; 40 } 41 42 if(obj instanceof ASN1Sequence) 43 { 44 return new ExtendedKeyUsage((ASN1Sequence)obj); 45 } 46 47 if (obj instanceof X509Extension) 48 { 49 return getInstance(X509Extension.convertValueToObject((X509Extension)obj)); 50 } 51 52 throw new IllegalArgumentException("Invalid ExtendedKeyUsage: " + obj.getClass().getName()); 53 } 54 55 public ExtendedKeyUsage( 56 KeyPurposeId usage) 57 { 58 this.seq = new DERSequence(usage); 59 60 this.usageTable.put(usage, usage); 61 } 62 63 public ExtendedKeyUsage( 64 ASN1Sequence seq) 65 { 66 this.seq = seq; 67 68 Enumeration e = seq.getObjects(); 69 70 while (e.hasMoreElements()) 71 { 72 Object o = e.nextElement(); 73 if (!(o instanceof DERObjectIdentifier)) 74 { 75 throw new IllegalArgumentException("Only DERObjectIdentifiers allowed in ExtendedKeyUsage."); 76 } 77 this.usageTable.put(o, o); 78 } 79 } 80 81 public ExtendedKeyUsage( 82 Vector usages) 83 { 84 ASN1EncodableVector v = new ASN1EncodableVector(); 85 Enumeration e = usages.elements(); 86 87 while (e.hasMoreElements()) 88 { 89 DERObject o = (DERObject)e.nextElement(); 90 91 v.add(o); 92 this.usageTable.put(o, o); 93 } 94 95 this.seq = new DERSequence(v); 96 } 97 98 public boolean hasKeyPurposeId( 99 KeyPurposeId keyPurposeId) 100 { 101 return (usageTable.get(keyPurposeId) != null); 102 } 103 104 /** 105 * Returns all extended key usages. 106 * The returned vector contains DERObjectIdentifiers. 107 * @return A vector with all key purposes. 108 */ 109 public Vector getUsages() 110 { 111 Vector temp = new Vector(); 112 for (Enumeration it = usageTable.elements(); it.hasMoreElements();) 113 { 114 temp.addElement(it.nextElement()); 115 } 116 return temp; 117 } 118 119 public int size() 120 { 121 return usageTable.size(); 122 } 123 124 public DERObject toASN1Object() 125 { 126 return seq; 127 } 128} 129