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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/com/sun/crypto/provider/ConstructKeys.java (1 of 18352 files). Show all

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java/pkg/com/sun/crypto/provider/ConstructKeys.java+191−0
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1+/*
2+ * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package com.sun.crypto.provider;
27+
28+import java.security.Key;
29+import java.security.PublicKey;
30+import java.security.PrivateKey;
31+import java.security.KeyFactory;
32+import java.security.InvalidKeyException;
33+import java.security.NoSuchProviderException;
34+import java.security.NoSuchAlgorithmException;
35+import java.security.spec.PKCS8EncodedKeySpec;
36+import java.security.spec.X509EncodedKeySpec;
37+import java.security.spec.InvalidKeySpecException;
38+
39+import javax.crypto.SecretKey;
40+import javax.crypto.Cipher;
41+import javax.crypto.spec.SecretKeySpec;
42+
43+/**
44+ * This class is a helper class which construct key objects
45+ * from encoded keys.
46+ *
47+ * @author Sharon Liu
48+ *
49+ */
50+
51+final class ConstructKeys {
52+ /**
53+ * Construct a public key from its encoding.
54+ *
55+ * @param encodedKey the encoding of a public key.
56+ *
57+ * @param encodedKeyAlgorithm the algorithm the encodedKey is for.
58+ *
59+ * @return a public key constructed from the encodedKey.
60+ */
61+ private static final PublicKey constructPublicKey(byte[] encodedKey,
62+ String encodedKeyAlgorithm)
63+ throws InvalidKeyException, NoSuchAlgorithmException
64+ {
65+ PublicKey key = null;
66+
67+ try {
68+ KeyFactory keyFactory =
69+ KeyFactory.getInstance(encodedKeyAlgorithm, "SunJCE");
70+ X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encodedKey);
71+ key = keyFactory.generatePublic(keySpec);
72+ } catch (NoSuchAlgorithmException nsae) {
73+ // Try to see whether there is another
74+ // provider which supports this algorithm
75+ try {
76+ KeyFactory keyFactory =
77+ KeyFactory.getInstance(encodedKeyAlgorithm);
78+ X509EncodedKeySpec keySpec =
79+ new X509EncodedKeySpec(encodedKey);
80+ key = keyFactory.generatePublic(keySpec);
81+ } catch (NoSuchAlgorithmException nsae2) {
82+ throw new NoSuchAlgorithmException("No installed providers " +
83+ "can create keys for the " +
84+ encodedKeyAlgorithm +
85+ "algorithm");
86+ } catch (InvalidKeySpecException ikse2) {
87+ InvalidKeyException ike =
88+ new InvalidKeyException("Cannot construct public key");
89+ ike.initCause(ikse2);
90+ throw ike;
91+ }
92+ } catch (InvalidKeySpecException ikse) {
93+ InvalidKeyException ike =
94+ new InvalidKeyException("Cannot construct public key");
95+ ike.initCause(ikse);
96+ throw ike;
97+ } catch (NoSuchProviderException nspe) {
98+ // Should never happen.
99+ }
100+
101+ return key;
102+ }
103+
104+ /**
105+ * Construct a private key from its encoding.
106+ *
107+ * @param encodedKey the encoding of a private key.
108+ *
109+ * @param encodedKeyAlgorithm the algorithm the wrapped key is for.
110+ *
111+ * @return a private key constructed from the encodedKey.
112+ */
113+ private static final PrivateKey constructPrivateKey(byte[] encodedKey,
114+ String encodedKeyAlgorithm)
115+ throws InvalidKeyException, NoSuchAlgorithmException
116+ {
117+ PrivateKey key = null;
118+
119+ try {
120+ KeyFactory keyFactory =
121+ KeyFactory.getInstance(encodedKeyAlgorithm, "SunJCE");
122+ PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey);
123+ return keyFactory.generatePrivate(keySpec);
124+ } catch (NoSuchAlgorithmException nsae) {
125+ // Try to see whether there is another
126+ // provider which supports this algorithm
127+ try {
128+ KeyFactory keyFactory =
129+ KeyFactory.getInstance(encodedKeyAlgorithm);
130+ PKCS8EncodedKeySpec keySpec =
131+ new PKCS8EncodedKeySpec(encodedKey);
132+ key = keyFactory.generatePrivate(keySpec);
133+ } catch (NoSuchAlgorithmException nsae2) {
134+ throw new NoSuchAlgorithmException("No installed providers " +
135+ "can create keys for the " +
136+ encodedKeyAlgorithm +
137+ "algorithm");
138+ } catch (InvalidKeySpecException ikse2) {
139+ InvalidKeyException ike =
140+ new InvalidKeyException("Cannot construct private key");
141+ ike.initCause(ikse2);
142+ throw ike;
143+ }
144+ } catch (InvalidKeySpecException ikse) {
145+ InvalidKeyException ike =
146+ new InvalidKeyException("Cannot construct private key");
147+ ike.initCause(ikse);
148+ throw ike;
149+ } catch (NoSuchProviderException nspe) {
150+ // Should never happen.
151+ }
152+
153+ return key;
154+ }
155+
156+ /**
157+ * Construct a secret key from its encoding.
158+ *
159+ * @param encodedKey the encoding of a secret key.
160+ *
161+ * @param encodedKeyAlgorithm the algorithm the secret key is for.
162+ *
163+ * @return a secret key constructed from the encodedKey.
164+ */
165+ private static final SecretKey constructSecretKey(byte[] encodedKey,
166+ String encodedKeyAlgorithm)
167+ {
168+ return (new SecretKeySpec(encodedKey, encodedKeyAlgorithm));
169+ }
170+
171+ static final Key constructKey(byte[] encoding, String keyAlgorithm,
172+ int keyType)
173+ throws InvalidKeyException, NoSuchAlgorithmException {
174+ Key result = null;
175+ switch (keyType) {
176+ case Cipher.SECRET_KEY:
177+ result = ConstructKeys.constructSecretKey(encoding,
178+ keyAlgorithm);
179+ break;
180+ case Cipher.PRIVATE_KEY:
181+ result = ConstructKeys.constructPrivateKey(encoding,
182+ keyAlgorithm);
183+ break;
184+ case Cipher.PUBLIC_KEY:
185+ result = ConstructKeys.constructPublicKey(encoding,
186+ keyAlgorithm);
187+ break;
188+ }
189+ return result;
190+ }
191+}