1 // Copyright (c) 1999-2004 Brian Wellington (bwelling (at) xbill.org) 2 3 package org.xbill.DNS; 4 5 import java.io.*; 6 import java.security.PublicKey; 7 8 /** 9 * Key - contains a cryptographic public key for use by DNS. 10 * The data can be converted to objects implementing 11 * java.security.interfaces.PublicKey 12 * @see DNSSEC 13 * 14 * @author Brian Wellington 15 */ 16 17 public class DNSKEYRecord extends KEYBase { 18 19 public static class Protocol { 20 private Protocol() {} 21 22 /** Key will be used for DNSSEC */ 23 public static final int DNSSEC = 3; 24 } 25 26 public static class Flags { 27 private Flags() {} 28 29 /** Key is a zone key */ 30 public static final int ZONE_KEY = 0x100; 31 32 /** Key is a secure entry point key */ 33 public static final int SEP_KEY = 0x1; 34 35 /** Key has been revoked */ 36 public static final int REVOKE = 0x80; 37 } 38 39 private static final long serialVersionUID = -8679800040426675002L; 40 41 DNSKEYRecord() {} 42 43 Record 44 getObject() { 45 return new DNSKEYRecord(); 46 } 47 48 /** 49 * Creates a DNSKEY Record from the given data 50 * @param flags Flags describing the key's properties 51 * @param proto The protocol that the key was created for 52 * @param alg The key's algorithm 53 * @param key Binary representation of the key 54 */ 55 public 56 DNSKEYRecord(Name name, int dclass, long ttl, int flags, int proto, int alg, 57 byte [] key) 58 { 59 super(name, Type.DNSKEY, dclass, ttl, flags, proto, alg, key); 60 } 61 62 /** 63 * Creates a DNSKEY Record from the given data 64 * @param flags Flags describing the key's properties 65 * @param proto The protocol that the key was created for 66 * @param alg The key's algorithm 67 * @param key The key as a PublicKey 68 * @throws DNSSEC.DNSSECException The PublicKey could not be converted into DNS 69 * format. 70 */ 71 public 72 DNSKEYRecord(Name name, int dclass, long ttl, int flags, int proto, int alg, 73 PublicKey key) throws DNSSEC.DNSSECException 74 { 75 super(name, Type.DNSKEY, dclass, ttl, flags, proto, alg, 76 DNSSEC.fromPublicKey(key, alg)); 77 publicKey = key; 78 } 79 80 void 81 rdataFromString(Tokenizer st, Name origin) throws IOException { 82 flags = st.getUInt16(); 83 proto = st.getUInt8(); 84 String algString = st.getString(); 85 alg = DNSSEC.Algorithm.value(algString); 86 if (alg < 0) 87 throw st.exception("Invalid algorithm: " + algString); 88 key = st.getBase64(); 89 } 90 91 } 92
