273 lines
10 KiB
Java
273 lines
10 KiB
Java
/*
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* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8248268 8268621 8271745
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* @summary Verify general properties of the AES/KW/NoPadding,
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* AES/KW/PKCS5Padding, and AES/KWP/NoPadding impls of SunJCE provider.
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* @run main TestGeneral
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*/
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.security.Key;
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import java.security.KeyPairGenerator;
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import java.security.PrivateKey;
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import java.security.InvalidAlgorithmParameterException;
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import java.security.AlgorithmParameters;
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import javax.crypto.*;
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import javax.crypto.spec.*;
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public class TestGeneral {
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private static final byte[] DATA_32 =
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Arrays.copyOf("1234567890123456789012345678901234".getBytes(), 32);
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private static final SecretKey KEY =
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new SecretKeySpec(DATA_32, 0, 16, "AES");
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private static final int KW_IV_LEN = 8;
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private static final int KWP_IV_LEN = 4;
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private static final int MAX_KW_PKCS5PAD_LEN = 8; // 1-8
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private static final int MAX_KWP_PAD_LEN = 7; // 0-7
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public static void testEnc(Cipher c, byte[] in, int startLen, int inc,
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IvParameterSpec[] ivs, int maxPadLen) throws Exception {
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System.out.println("testEnc, input len=" + startLen + " w/ inc=" +
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inc);
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for (IvParameterSpec iv : ivs) {
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System.out.print("\t=> w/ iv=" + iv);
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for (int inLen = startLen; inLen < in.length; inLen+=inc) {
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c.init(Cipher.ENCRYPT_MODE, KEY, iv);
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int estOutLen = c.getOutputSize(inLen);
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System.out.println(", inLen=" + inLen);
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byte[] out = c.doFinal(in, 0, inLen);
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// check the length of encryption output
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if (estOutLen != out.length || (out.length % 8 != 0) ||
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(out.length - inLen < 8)) {
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System.out.println("=> estimated: " + estOutLen);
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System.out.println("=> actual: " + out.length);
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throw new RuntimeException("Failed enc output len check");
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}
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c.init(Cipher.DECRYPT_MODE, KEY, iv);
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estOutLen = c.getOutputSize(out.length);
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byte[] recovered = new byte[estOutLen];
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// do decryption using ByteBuffer and multi-part
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ByteBuffer outBB = ByteBuffer.wrap(out);
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ByteBuffer recoveredBB = ByteBuffer.wrap(recovered);
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int len = c.update(outBB, recoveredBB);
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len += c.doFinal(outBB, recoveredBB);
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// check the length of decryption output
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if (estOutLen < len || (estOutLen - len) > maxPadLen) {
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System.out.println("=> estimated: " + estOutLen);
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System.out.println("=> actual: " + len);
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throw new RuntimeException("Failed dec output len check");
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}
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if (!Arrays.equals(in, 0, inLen, recovered, 0, len)) {
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throw new RuntimeException("Failed decrypted data check");
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}
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}
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}
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}
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public static void testWrap(Cipher c, Key[] inKeys, IvParameterSpec[] ivs,
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int maxPadLen) throws Exception {
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for (Key inKey : inKeys) {
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System.out.println("testWrap, key: " + inKey);
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for (IvParameterSpec iv : ivs) {
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System.out.println("\t=> w/ iv " + iv);
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c.init(Cipher.WRAP_MODE, KEY, iv);
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byte[] out = c.wrap(inKey);
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// output should always be multiple of cipher block size
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if (out.length % c.getBlockSize() != 0) {
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throw new RuntimeException("Invalid wrap len: " +
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out.length);
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}
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c.init(Cipher.UNWRAP_MODE, KEY, iv);
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// SecretKey or PrivateKey
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int keyType = (inKey instanceof SecretKey? Cipher.SECRET_KEY :
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Cipher.PRIVATE_KEY);
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int estOutLen = c.getOutputSize(out.length);
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Key key2 = c.unwrap(out, inKey.getAlgorithm(), keyType);
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if ((keyType == Cipher.SECRET_KEY &&
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!(key2 instanceof SecretKey)) ||
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(keyType == Cipher.PRIVATE_KEY &&
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!(key2 instanceof PrivateKey))) {
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throw new RuntimeException("Failed unwrap type check");
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}
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byte[] in2 = key2.getEncoded();
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// check decryption output length
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if (estOutLen < in2.length ||
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(estOutLen - in2.length) > maxPadLen) {
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System.out.println("=> estimated: " + estOutLen);
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System.out.println("=> actual: " + in2.length);
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throw new RuntimeException("Failed unwrap len check");
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}
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if (!Arrays.equals(inKey.getEncoded(), in2) ||
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!(inKey.getAlgorithm().equalsIgnoreCase
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(key2.getAlgorithm()))) {
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throw new RuntimeException("Failed unwrap key check");
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}
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}
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}
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}
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public static void testIv(Cipher c, int defIvLen, boolean allowCustomIv)
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throws Exception {
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System.out.println("testIv: defIvLen = " + defIvLen +
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" allowCustomIv = " + allowCustomIv);
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// get a fresh Cipher instance so we can test iv with pre-init state
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c = Cipher.getInstance(c.getAlgorithm(), c.getProvider());
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if (c.getIV() != null) {
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throw new RuntimeException("Expects null iv");
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}
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AlgorithmParameters ivParams = c.getParameters();
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if (ivParams == null) {
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throw new RuntimeException("Expects non-null default parameters");
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}
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IvParameterSpec ivSpec =
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ivParams.getParameterSpec(IvParameterSpec.class);
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byte[] iv = ivSpec.getIV();
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// try through all opmodes
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c.init(Cipher.ENCRYPT_MODE, KEY);
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c.init(Cipher.DECRYPT_MODE, KEY);
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c.init(Cipher.WRAP_MODE, KEY);
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c.init(Cipher.UNWRAP_MODE, KEY);
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byte[] defIv = c.getIV();
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// try again through all opmodes
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c.init(Cipher.ENCRYPT_MODE, KEY);
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c.init(Cipher.DECRYPT_MODE, KEY);
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c.init(Cipher.WRAP_MODE, KEY);
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c.init(Cipher.UNWRAP_MODE, KEY);
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byte[] defIv2 = c.getIV();
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if (iv.length != defIvLen || !Arrays.equals(iv, defIv) ||
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!Arrays.equals(defIv, defIv2)) {
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throw new RuntimeException("Failed default iv check");
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}
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if (defIv == defIv2) {
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throw new RuntimeException("Failed getIV copy check");
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}
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// try init w/ an iv w/ invalid length
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try {
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c.init(Cipher.ENCRYPT_MODE, KEY, new IvParameterSpec(defIv, 0,
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defIv.length/2));
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throw new RuntimeException("Invalid iv accepted");
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} catch (InvalidAlgorithmParameterException iape) {
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System.out.println("Invalid IV rejected as expected");
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}
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if (allowCustomIv) {
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Arrays.fill(defIv, (byte) 0xFF);
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// try through all opmodes
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c.init(Cipher.ENCRYPT_MODE, KEY, new IvParameterSpec(defIv));
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c.init(Cipher.DECRYPT_MODE, KEY, new IvParameterSpec(defIv));
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c.init(Cipher.WRAP_MODE, KEY, new IvParameterSpec(defIv));
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c.init(Cipher.UNWRAP_MODE, KEY, new IvParameterSpec(defIv));
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if (!Arrays.equals(defIv, c.getIV())) {
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throw new RuntimeException("Failed set iv check");
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}
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}
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}
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public static void main(String[] argv) throws Exception {
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byte[] data = DATA_32;
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SecretKey aes256 = new SecretKeySpec(DATA_32, "AES");
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SecretKey any256 = new SecretKeySpec(DATA_32, "ANY");
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PrivateKey priv = KeyPairGenerator.getInstance
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("RSA", "SunRsaSign").generateKeyPair().getPrivate();
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String[] algos = {
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"AES/KW/PKCS5Padding", "AES/KW/NoPadding", "AES/KWP/NoPadding"
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};
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for (String a : algos) {
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System.out.println("Testing " + a);
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Cipher c = Cipher.getInstance(a, "SunJCE");
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int blkSize = c.getBlockSize();
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// set the default based on AES/KWP/NoPadding, the other two
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// override as needed
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int startLen = data.length - blkSize;
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int inc = 1;
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IvParameterSpec[] ivs = new IvParameterSpec[] { null };
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int padLen = MAX_KWP_PAD_LEN;
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Key[] keys = new Key[] { aes256, any256, priv };
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int ivLen = KWP_IV_LEN;
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boolean allowCustomIv = false;
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switch (a) {
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case "AES/KW/PKCS5Padding":
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ivs = new IvParameterSpec[] {
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null, new IvParameterSpec(DATA_32, 0, KW_IV_LEN) };
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padLen = MAX_KW_PKCS5PAD_LEN;
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ivLen = KW_IV_LEN;
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allowCustomIv = true;
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break;
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case "AES/KW/NoPadding":
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startLen = data.length >> 1;
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inc = blkSize;
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ivs = new IvParameterSpec[] {
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null, new IvParameterSpec(DATA_32, 0, KW_IV_LEN) };
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padLen = 0;
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keys = new Key[] { aes256, any256 };
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ivLen = KW_IV_LEN;
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allowCustomIv = true;
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break;
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}
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// now test based on the configured arguments
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testEnc(c, data, startLen, inc, ivs, padLen);
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testWrap(c, keys, ivs, padLen);
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testIv(c, ivLen, allowCustomIv);
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}
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System.out.println("All Tests Passed");
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}
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}
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