Mercurial > 510Connectbot

annotate src/ch/ethz/ssh2/signature/DSASHA1Verify.java @ 332:5c17707d94b0 ganymed

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fix java formatting
author Carl Byington <carl@five-ten-sg.com>
date Thu, 31 Jul 2014 13:06:55 -0700
parents e1c445af8e46
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
1
279
e1c445af8e46 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
2 package ch.ethz.ssh2.signature;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
3
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
4 import java.io.IOException;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
5 import java.math.BigInteger;
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
6 import java.security.InvalidKeyException;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
7 import java.security.KeyFactory;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
8 import java.security.NoSuchAlgorithmException;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
9 import java.security.SecureRandom;
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
10 import java.security.Signature;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
11 import java.security.SignatureException;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
12 import java.security.interfaces.DSAParams;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
13 import java.security.interfaces.DSAPrivateKey;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
14 import java.security.interfaces.DSAPublicKey;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
15 import java.security.spec.DSAPublicKeySpec;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
16 import java.security.spec.InvalidKeySpecException;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
17 import java.security.spec.KeySpec;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
18
279
e1c445af8e46 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
19 import ch.ethz.ssh2.log.Logger;
e1c445af8e46 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
20 import ch.ethz.ssh2.packets.TypesReader;
e1c445af8e46 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
21 import ch.ethz.ssh2.packets.TypesWriter;
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
22
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
23
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
24 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
25 * DSASHA1Verify.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
26 *
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
27 * @author Christian Plattner, plattner@trilead.com
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
28 * @version $Id: DSASHA1Verify.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
29 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
30 public class DSASHA1Verify {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
31 private static final Logger log = Logger.getLogger(DSASHA1Verify.class);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
32
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
33 public static DSAPublicKey decodeSSHDSAPublicKey(byte[] key) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
34 TypesReader tr = new TypesReader(key);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
35 String key_format = tr.readString();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
36
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
37 if (key_format.equals("ssh-dss") == false)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
38 throw new IllegalArgumentException("This is not a ssh-dss public key!");
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
39
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
40 BigInteger p = tr.readMPINT();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
41 BigInteger q = tr.readMPINT();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
42 BigInteger g = tr.readMPINT();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
43 BigInteger y = tr.readMPINT();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
44
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
45 if (tr.remain() != 0)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
46 throw new IOException("Padding in DSA public key!");
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
47
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
48 try {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
49 KeyFactory kf = KeyFactory.getInstance("DSA");
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
50 KeySpec ks = new DSAPublicKeySpec(y, p, q, g);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
51 return (DSAPublicKey) kf.generatePublic(ks);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
52 }
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
53 catch (NoSuchAlgorithmException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
54 IOException ex = new IOException();
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
55 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
56 throw ex;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
57 }
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
58 catch (InvalidKeySpecException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
59 IOException ex = new IOException();
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
60 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
61 throw ex;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
62 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
63 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
64
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
65 public static byte[] encodeSSHDSAPublicKey(DSAPublicKey pk) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
66 TypesWriter tw = new TypesWriter();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
67 tw.writeString("ssh-dss");
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
68 DSAParams params = pk.getParams();
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
69 tw.writeMPInt(params.getP());
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
70 tw.writeMPInt(params.getQ());
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
71 tw.writeMPInt(params.getG());
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
72 tw.writeMPInt(pk.getY());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
73 return tw.getBytes();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
74 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
75
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
76 /**
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
77 * Convert from Java's signature ASN.1 encoding to the SSH spec.
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
78 * <p>
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
79 * Java ASN.1 encoding:
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
80 * <pre>
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
81 * SEQUENCE ::= {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
82 * r INTEGER,
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
83 * s INTEGER
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
84 * }
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
85 * </pre>
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
86 */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
87 public static byte[] encodeSSHDSASignature(byte[] ds) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
88 TypesWriter tw = new TypesWriter();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
89 tw.writeString("ssh-dss");
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
90 int len, index;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
91 index = 3;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
92 len = ds[index++] & 0xff;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
93 byte[] r = new byte[len];
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
94 System.arraycopy(ds, index, r, 0, r.length);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
95 index = index + len + 1;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
96 len = ds[index++] & 0xff;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
97 byte[] s = new byte[len];
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
98 System.arraycopy(ds, index, s, 0, s.length);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
99 byte[] a40 = new byte[40];
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
100 /* Patch (unsigned) r and s into the target array. */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
101 int r_copylen = (r.length < 20) ? r.length : 20;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
102 int s_copylen = (s.length < 20) ? s.length : 20;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
103 System.arraycopy(r, r.length - r_copylen, a40, 20 - r_copylen, r_copylen);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
104 System.arraycopy(s, s.length - s_copylen, a40, 40 - s_copylen, s_copylen);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
105 tw.writeString(a40, 0, 40);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
106 return tw.getBytes();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
107 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
108
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
109 public static byte[] decodeSSHDSASignature(byte[] sig) throws IOException {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
110 byte[] rsArray = null;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
111
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
112 if (sig.length == 40) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
113 /* OK, another broken SSH server. */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
114 rsArray = sig;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
115 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
116 else {
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
117 /* Hopefully a server obeying the standard... */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
118 TypesReader tr = new TypesReader(sig);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
119 String sig_format = tr.readString();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
120
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
121 if (sig_format.equals("ssh-dss") == false)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
122 throw new IOException("Peer sent wrong signature format");
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
123
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
124 rsArray = tr.readByteString();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
125
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
126 if (rsArray.length != 40)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
127 throw new IOException("Peer sent corrupt signature");
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
128
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
129 if (tr.remain() != 0)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
130 throw new IOException("Padding in DSA signature!");
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
131 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
132
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
133 int i = 0;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
134 int j = 0;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
135 byte[] tmp;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
136
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
137 if (rsArray[0] == 0 && rsArray[1] == 0 && rsArray[2] == 0) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
138 j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
139 | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
140 i += j;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
141 j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
142 | ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
143 tmp = new byte[j];
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
144 System.arraycopy(rsArray, i, tmp, 0, j);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
145 rsArray = tmp;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
146 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
148 /* ASN.1 */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
149 int frst = ((rsArray[0] & 0x80) != 0 ? 1 : 0);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
150 int scnd = ((rsArray[20] & 0x80) != 0 ? 1 : 0);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
151 /* Calculate output length */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
152 int length = rsArray.length + 6 + frst + scnd;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
153 tmp = new byte[length];
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
154 /* DER-encoding to match Java */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
155 tmp[0] = (byte) 0x30;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
156
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
157 if (rsArray.length != 40)
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
158 throw new IOException("Peer sent corrupt signature");
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
159
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
160 /* Calculate length */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
161 tmp[1] = (byte) 0x2c;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
162 tmp[1] += frst;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
163 tmp[1] += scnd;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
164 /* First item */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
165 tmp[2] = (byte) 0x02;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
166 /* First item length */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
167 tmp[3] = (byte) 0x14;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
168 tmp[3] += frst;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
169 /* Copy in the data for first item */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
170 System.arraycopy(rsArray, 0, tmp, 4 + frst, 20);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
171 /* Second item */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
172 tmp[4 + tmp[3]] = (byte) 0x02;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
173 /* Second item length */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
174 tmp[5 + tmp[3]] = (byte) 0x14;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
175 tmp[5 + tmp[3]] += scnd;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
176 /* Copy in the data for the second item */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
177 System.arraycopy(rsArray, 20, tmp, 6 + tmp[3] + scnd, 20);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
178 /* Swap buffers */
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
179 rsArray = tmp;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
180 return rsArray;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
181 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
183 public static boolean verifySignature(byte[] message, byte[] ds, DSAPublicKey dpk) throws IOException {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
184 try {
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
185 Signature s = Signature.getInstance("SHA1withDSA");
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
186 s.initVerify(dpk);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
187 s.update(message);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
188 return s.verify(ds);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
189 }
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
190 catch (NoSuchAlgorithmException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
191 IOException ex = new IOException("No such algorithm");
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
192 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
193 throw ex;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
194 }
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
195 catch (InvalidKeyException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
196 IOException ex = new IOException("No such algorithm");
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
197 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
198 throw ex;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199 }
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
200 catch (SignatureException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
201 IOException ex = new IOException();
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
202 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
203 throw ex;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
204 }
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
205 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
206
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
207 public static byte[] generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd) throws IOException {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
208 try {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
209 Signature s = Signature.getInstance("SHA1withDSA");
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
210 s.initSign(pk);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
211 s.update(message);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
212 return s.sign();
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213 }
278
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
214 catch (NoSuchAlgorithmException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
215 IOException ex = new IOException();
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
216 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
217 throw ex;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
218 }
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
219 catch (InvalidKeyException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
220 IOException ex = new IOException();
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
221 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
222 throw ex;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
223 }
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
224 catch (SignatureException e) {
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
225 IOException ex = new IOException();
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
226 ex.initCause(e);
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
227 throw ex;
d7e088fa2123 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 273
diff changeset
228 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
229 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
230 }