Juraj Somorovsky
eb9f7b59e6
Importing https://github.com/google/wycheproof/pull/50. PiperOrigin-RevId: 195427107 GitOrigin-RevId: 39bbc63b20d5d08c5457bd338c90f45370047831
103 lines
3.6 KiB
Java
103 lines
3.6 KiB
Java
/**
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.security.wycheproof;
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import java.nio.ByteBuffer;
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import java.security.Provider;
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import java.security.Security;
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/** Test utilities */
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public class TestUtil {
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public static String bytesToHex(byte[] bytes) {
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// bytesToHex is used to convert output from Cipher.
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// cipher.update can return null, which is equivalent to returning
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// no plaitext rsp. ciphertext.
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if (bytes == null) {
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return "";
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}
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String chars = "0123456789abcdef";
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StringBuilder result = new StringBuilder(2 * bytes.length);
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for (byte b : bytes) {
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// convert to unsigned
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int val = b & 0xff;
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result.append(chars.charAt(val / 16));
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result.append(chars.charAt(val % 16));
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}
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return result.toString();
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}
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/**
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* Returns a hexadecimal representation of the bytes written to ByteBuffer (i.e. all the bytes
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* before position()).
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*/
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public static String byteBufferToHex(ByteBuffer buffer) {
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ByteBuffer tmp = buffer.duplicate();
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tmp.flip();
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byte[] bytes = new byte[tmp.remaining()];
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tmp.get(bytes);
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return bytesToHex(bytes);
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}
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public static byte[] hexToBytes(String hex) throws IllegalArgumentException {
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if (hex.length() % 2 != 0) {
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throw new IllegalArgumentException("Expected a string of even length");
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}
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int size = hex.length() / 2;
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byte[] result = new byte[size];
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for (int i = 0; i < size; i++) {
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int hi = Character.digit(hex.charAt(2 * i), 16);
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int lo = Character.digit(hex.charAt(2 * i + 1), 16);
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if ((hi == -1) || (lo == -1)) {
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throw new IllegalArgumentException("input is not hexadecimal");
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}
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result[i] = (byte) (16 * hi + lo);
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}
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return result;
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}
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public static void installOnlyThisProvider(Provider provider) {
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for (Provider p : Security.getProviders()) {
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Security.removeProvider(p.getName());
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}
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Security.insertProviderAt(provider, 1);
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}
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public static void installOnlyOpenJDKProviders() throws Exception {
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for (Provider p : Security.getProviders()) {
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Security.removeProvider(p.getName());
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}
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installOpenJDKProvider("com.sun.net.ssl.internal.ssl.Provider");
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installOpenJDKProvider("com.sun.crypto.provider.SunJCE");
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installOpenJDKProvider("com.sun.security.sasl.Provider");
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installOpenJDKProvider("org.jcp.xml.dsig.internal.dom.XMLDSigRI");
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installOpenJDKProvider("sun.security.ec.SunEC");
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installOpenJDKProvider("sun.security.jgss.SunProvider");
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installOpenJDKProvider("sun.security.provider.Sun");
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installOpenJDKProvider("sun.security.rsa.SunRsaSign");
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installOpenJDKProvider("sun.security.smartcardio.SunPCSC");
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}
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private static void installOpenJDKProvider(String className) throws Exception {
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Provider provider = (Provider) Class.forName(className).getConstructor().newInstance();
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Security.insertProviderAt(provider, 1);
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}
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public static void printJavaInformation() {
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System.out.println("Running with: ");
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System.out.println(" java.runtime.name: " + System.getProperty("java.runtime.name"));
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System.out.println(" java.runtime.version: " + System.getProperty("java.runtime.version"));
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}
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}
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