Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | // Copyright (c) 1999-2004 Brian Wellington (bwelling@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| 35 | /** Key has been revoked */ |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 | } |