1f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpackage org.bouncycastle.asn1; 2f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 3f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport java.io.IOException; 4f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 5f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 6f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * ASN.1 TaggedObject - in ASN.1 nottation this is any object proceeded by 7f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * a [n] where n is some number - these are assume to follow the construction 8f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * rules (as with sequences). 9f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 10f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic abstract class ASN1TaggedObject 11f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project extends DERObject 12f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project{ 13f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int tagNo; 14f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project boolean empty = false; 15f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project boolean explicit = true; 16f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project DEREncodable obj = null; 17f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project static public ASN1TaggedObject getInstance( 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ASN1TaggedObject obj, 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project boolean explicit) 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (explicit) 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (ASN1TaggedObject)obj.getObject(); 25f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 26f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException("implicitly tagged tagged object"); 28f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project static public ASN1TaggedObject getInstance( 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object obj) 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (obj == null || obj instanceof ASN1TaggedObject) 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (ASN1TaggedObject)obj; 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException("unknown object in getInstance"); 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Create a tagged object in the explicit style. 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param tagNo the tag number for this object. 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param obj the tagged object. 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public ASN1TaggedObject( 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int tagNo, 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project DEREncodable obj) 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.explicit = true; 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.tagNo = tagNo; 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.obj = obj; 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Create a tagged object with the style given by the value of explicit. 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <p> 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * If the object implements ASN1Choice the tag style will always be changed 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * to explicit in accordance with the ASN.1 encoding rules. 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * </p> 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param explicit true if the object is explicitly tagged. 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param tagNo the tag number for this object. 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param obj the tagged object. 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public ASN1TaggedObject( 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project boolean explicit, 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int tagNo, 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project DEREncodable obj) 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (obj instanceof ASN1Choice) 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.explicit = true; 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project else 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.explicit = explicit; 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.tagNo = tagNo; 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.obj = obj; 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean equals( 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Object o) 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!(o instanceof ASN1TaggedObject)) 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ASN1TaggedObject other = (ASN1TaggedObject)o; 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (tagNo != other.tagNo || empty != other.empty || explicit != other.explicit) 95f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 96f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 97f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 98f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 99f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if(obj == null) 100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if(other.obj != null) 102f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 104f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project else 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if(!(obj.equals(other.obj))) 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 113f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return true; 115f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 116f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 117f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int hashCode() 118f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 119f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int code = tagNo; 120f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 121f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (obj != null) 122f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 123f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project code ^= obj.hashCode(); 124f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 125f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 126f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return code; 127f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 128f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 129f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int getTagNo() 130f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 131f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return tagNo; 132f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 133f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 134f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 135f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * return whether or not the object may be explicitly tagged. 136f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <p> 137f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Note: if the object has been read from an input stream, the only 138f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * time you can be sure if isExplicit is returning the true state of 139f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * affairs is if it returns false. An implicitly tagged object may appear 140f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * to be explicitly tagged, so you need to understand the context under 141f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * which the reading was done as well, see getObject below. 142f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 143f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean isExplicit() 144f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 145f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return explicit; 146f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 147f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 148f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean isEmpty() 149f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 150f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return empty; 151f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 152f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 153f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 154f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * return whatever was following the tag. 155f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <p> 156f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Note: tagged objects are generally context dependent if you're 157f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * trying to extract a tagged object you should be going via the 158f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * appropriate getInstance method. 159f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 160f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public DERObject getObject() 161f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 162f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (obj != null) 163f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 164f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return obj.getDERObject(); 165f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 166f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 167f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return null; 168f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 169f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 170f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project abstract void encode(DEROutputStream out) 171f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throws IOException; 172f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 173f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String toString() 174f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project { 175f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return "[" + tagNo + "]" + obj; 176f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 177f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 178