/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package libcore.java.security;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.Security;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import junit.framework.TestCase;
public final class MessageDigestTest extends TestCase {
private final byte[] sha_456 = {
-24, 9, -59, -47, -50, -92, 123, 69, -29, 71,
1, -46, 63, 96, -118, -102, 88, 3, 77, -55
};
public void testShaReset() throws NoSuchAlgorithmException {
MessageDigest sha = MessageDigest.getInstance("SHA");
sha.update(new byte[] { 1, 2, 3 });
sha.reset();
sha.update(new byte[] { 4, 5, 6 });
assertEquals(Arrays.toString(sha_456), Arrays.toString(sha.digest()));
}
public void test_getInstance() throws Exception {
Provider[] providers = Security.getProviders();
for (Provider provider : providers) {
Set<Provider.Service> services = provider.getServices();
for (Provider.Service service : services) {
String type = service.getType();
if (!type.equals("MessageDigest")) {
continue;
}
String algorithm = service.getAlgorithm();
try {
// MessageDigest.getInstance(String)
MessageDigest md1 = MessageDigest.getInstance(algorithm);
assertEquals(algorithm, md1.getAlgorithm());
test_MessageDigest(md1);
// MessageDigest.getInstance(String, Provider)
MessageDigest md2 = MessageDigest.getInstance(algorithm, provider);
assertEquals(algorithm, md2.getAlgorithm());
assertEquals(provider, md2.getProvider());
test_MessageDigest(md2);
// MessageDigest.getInstance(String, String)
MessageDigest md3 = MessageDigest.getInstance(algorithm, provider.getName());
assertEquals(algorithm, md3.getAlgorithm());
assertEquals(provider, md3.getProvider());
test_MessageDigest(md3);
} catch (Exception e) {
throw new Exception("Problem testing MessageDigest." + algorithm, e);
}
}
}
}
private static final Map<String, Map<String, byte[]>> EXPECTATIONS
= new HashMap<String, Map<String, byte[]>>();
private static void putExpectation(String algorithm, String inputName, byte[] expected) {
algorithm = algorithm.toUpperCase();
Map<String, byte[]> expectations = EXPECTATIONS.get(algorithm);
if (expectations == null) {
expectations = new HashMap<String, byte[]>();
EXPECTATIONS.put(algorithm, expectations);
}
expectations.put(inputName, expected);
}
private static Map<String, byte[]> getExpectations(String algorithm) throws Exception {
algorithm = algorithm.toUpperCase();
Map<String, byte[]> expectations = EXPECTATIONS.get(algorithm);
if (expectations == null) {
throw new Exception("No expectations for MessageDigest." + algorithm);
}
return expectations;
}
private static final String INPUT_EMPTY = "empty";
private static final String INPUT_256MB = "256mb";
static {
// INPUT_EMPTY
putExpectation("MD2",
INPUT_EMPTY,
new byte[] { -125, 80, -27, -93, -30, 76, 21, 61,
-14, 39, 92, -97, -128, 105, 39, 115 });
putExpectation("MD5",
INPUT_EMPTY,
new byte[] { -44, 29, -116, -39, -113, 0, -78, 4,
-23, -128, 9, -104, -20, -8, 66, 126 });
putExpectation("SHA",
INPUT_EMPTY,
new byte[] { -38, 57, -93, -18, 94, 107, 75, 13,
50, 85, -65, -17, -107, 96, 24, -112,
-81, -40, 7, 9});
putExpectation("SHA-1",
INPUT_EMPTY,
new byte[] { -38, 57, -93, -18, 94, 107, 75, 13,
50, 85, -65, -17, -107, 96, 24, -112,
-81, -40, 7, 9});
putExpectation("SHA-256",
INPUT_EMPTY,
new byte[] { -29, -80, -60, 66, -104, -4, 28, 20,
-102, -5, -12, -56, -103, 111, -71, 36,
39, -82, 65, -28, 100, -101, -109, 76,
-92, -107, -103, 27, 120, 82, -72, 85 });
putExpectation("SHA-384",
INPUT_EMPTY,
new byte[] { 56, -80, 96, -89, 81, -84, -106, 56,
76, -39, 50, 126, -79, -79, -29, 106,
33, -3, -73, 17, 20, -66, 7, 67,
76, 12, -57, -65, 99, -10, -31, -38,
39, 78, -34, -65, -25, 111, 101, -5,
-43, 26, -46, -15, 72, -104, -71, 91 });
putExpectation("SHA-512",
INPUT_EMPTY,
new byte[] { -49, -125, -31, 53, 126, -17, -72, -67,
-15, 84, 40, 80, -42, 109, -128, 7,
-42, 32, -28, 5, 11, 87, 21, -36,
-125, -12, -87, 33, -45, 108, -23, -50,
71, -48, -47, 60, 93, -123, -14, -80,
-1, -125, 24, -46, -121, 126, -20, 47,
99, -71, 49, -67, 71, 65, 122, -127,
-91, 56, 50, 122, -7, 39, -38, 62 });
// Regression test input for problem SHA-1 with input of
// 256MBs. However, its currently too slow to be practical on
// devices, so its disabled in that case. http://b/4501620
boolean enabled256mb = (System.getProperty("os.arch").contains("x86") // host
|| System.getProperty("os.arch").contains("amd64")); // RI
if (enabled256mb) {
// INPUT_256MB
putExpectation("MD2",
INPUT_256MB,
new byte[] { -63, -120, 6, 67, 12, -87, -39, -11,
-67, -3, -31, -41, -91, 16, -35, 91 });
putExpectation("MD5",
INPUT_256MB,
new byte[] { 31, 80, 57, -27, 11, -42, 107, 41,
12, 86, 104, 77, -123, 80, -58, -62 });
putExpectation("SHA",
INPUT_256MB,
new byte[] { 123, -111, -37, -36, 86, -59, 120, 30,
-33, 108, -120, 71, -76, -86, 105, 101,
86, 108, 92, 117 });
putExpectation("SHA-1",
INPUT_256MB,
new byte[] { 123, -111, -37, -36, 86, -59, 120, 30,
-33, 108, -120, 71, -76, -86, 105, 101,
86, 108, 92, 117 });
putExpectation("SHA-256",
INPUT_256MB,
new byte[] { -90, -41, 42, -57, 105, 15, 83, -66,
106, -28, 107, -88, -123, 6, -67, -105,
48, 42, 9, 63, 113, 8, 71, 43,
-39, -17, -61, -50, -3, -96, 100, -124 });
putExpectation("SHA-384",
INPUT_256MB,
new byte[] { 71, 72, 77, -83, -110, 22, -118, -18,
-58, 119, 115, 74, -67, -36, 84, 122,
-105, -67, -75, 15, -33, 37, 78, -95,
4, 118, -53, 106, 65, -115, -19, 121,
-59, -94, -45, -111, -124, 35, 35, 60,
67, -34, 62, 106, -16, 122, -110, -14 });
putExpectation("SHA-512",
INPUT_256MB,
new byte[] { 36, 7, -120, 39, -87, -87, 84, -40,
-66, 114, 62, -73, 107, 101, -117, -12,
-124, 20, 109, 103, -92, 125, 111, 102,
12, 114, -68, 100, 30, 25, -88, 62,
108, 56, 9, -107, 89, -25, -50, 118,
-87, 100, 13, 37, -14, 66, -40, -97,
105, -27, 79, -62, 53, -31, 83, 40,
4, 57, 90, -81, 63, -77, -42, 113 });
}
}
private void test_MessageDigest(MessageDigest md) throws Exception {
String algorithm = md.getAlgorithm();
for (Map.Entry<String, byte[]> expectation : getExpectations(algorithm).entrySet()) {
String inputName = expectation.getKey();
byte[] expected = expectation.getValue();
byte[] actual;
if (inputName.equals(INPUT_EMPTY)) {
actual = md.digest();
} else if (inputName.equals(INPUT_256MB)) {
byte[] mb = new byte[1 * 1024 * 1024];
for (int i = 0; i < 256; i++) {
md.update(mb);
}
actual = md.digest();
} else {
throw new AssertionError(inputName);
}
assertDigest(algorithm, expected, actual);
assertEquals(algorithm, expected.length, md.getDigestLength());
}
}
private void assertDigest(String algorithm, byte[] actual, byte[] expected) {
assertEquals(algorithm, javaBytes(actual), javaBytes(expected));
}
private String javaBytes(byte[] bytes) {
StringBuffer buf = new StringBuffer();
buf.append("new byte[] { ");
for (byte b : bytes) {
buf.append(b);
buf.append(", ");
}
buf.append(" }");
return buf.toString();
}
}