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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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test/jdk/com/sun/crypto/provider/Cipher/RSA/TestOAEP.java Normal file
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/*
* Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4894151 8146293
* @summary encryption/decryption test for OAEP
* @author Andreas Sterbenz
* @key randomness
*/
import java.util.*;
import java.security.*;
import javax.crypto.*;
public class TestOAEP {
private static Provider cp;
private static PrivateKey privateKey;
private static PublicKey publicKey;
private static Random random = new Random();
public static void main(String[] args) throws Exception {
long start = System.currentTimeMillis();
cp = Security.getProvider(System.getProperty("test.provider.name", "SunJCE"));
System.out.println("Testing provider " + cp.getName() + "...");
Provider kfp = Security.getProvider(
System.getProperty("test.provider.name", "SunRsaSign"));
KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", kfp);
kpg.initialize(768);
KeyPair kp = kpg.generateKeyPair();
privateKey = kp.getPrivate();
publicKey = kp.getPublic();
Cipher.getInstance("RSA/ECB/OAEPwithMD5andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA1andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA-1andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA-224andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA-256andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA-384andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA-512andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA-512/224andMGF1Padding");
Cipher.getInstance("RSA/ECB/OAEPwithSHA-512/256andMGF1Padding");
// basic test using MD5
testEncryptDecrypt("MD5", 0);
testEncryptDecrypt("MD5", 16);
testEncryptDecrypt("MD5", 62);
try {
testEncryptDecrypt("MD5", 63);
throw new Exception("Unexpectedly completed call");
} catch (IllegalBlockSizeException e) {
// ok
System.out.println(e);
}
// basic test using SHA-1
testEncryptDecrypt("SHA1", 0);
testEncryptDecrypt("SHA1", 16);
testEncryptDecrypt("SHA1", 54);
try {
testEncryptDecrypt("SHA1", 55);
throw new Exception("Unexpectedly completed call");
} catch (IllegalBlockSizeException e) {
// ok
System.out.println(e);
}
// tests alias works
testEncryptDecrypt("SHA-1", 16);
String[] HASH_ALG_224 = { "SHA-224", "SHA-512/224" };
for (String ha : HASH_ALG_224) {
testEncryptDecrypt(ha, 0);
testEncryptDecrypt(ha, 16);
testEncryptDecrypt(ha, 38);
try {
testEncryptDecrypt(ha, 39);
throw new Exception("Unexpectedly completed call");
} catch (IllegalBlockSizeException e) {
// ok
System.out.println(e);
}
}
String[] HASH_ALG_256 = { "SHA-256", "SHA-512/256" };
for (String ha : HASH_ALG_256) {
testEncryptDecrypt(ha, 0);
testEncryptDecrypt(ha, 16);
testEncryptDecrypt(ha, 30);
try {
testEncryptDecrypt(ha, 31);
throw new Exception("Unexpectedly completed call");
} catch (IllegalBlockSizeException e) {
// ok
System.out.println(e);
}
}
// 768 bit key too short for OAEP with 64 byte digest
try {
testEncryptDecrypt("SHA-512", 1);
throw new Exception("Unexpectedly completed call");
} catch (InvalidKeyException e) {
// ok
System.out.println(e);
}
Cipher c;
byte[] enc;
byte[] data = new byte[16];
random.nextBytes(data);
try {
c = Cipher.getInstance("RSA/ECB/OAEPwithFOOandMGF1Padding", cp);
throw new Exception("Unexpectedly completed call");
} catch (NoSuchPaddingException e) {
// ok
System.out.println(e);
}
c = Cipher.getInstance("RSA/ECB/OAEPwithMD5andMGF1Padding", cp);
// cannot "sign" using OAEP
try {
c.init(Cipher.ENCRYPT_MODE, privateKey);
throw new Exception("Unexpectedly completed call");
} catch (InvalidKeyException e) {
// ok
System.out.println(e);
}
// cannot "verify" using OAEP
try {
c.init(Cipher.DECRYPT_MODE, publicKey);
throw new Exception("Unexpectedly completed call");
} catch (InvalidKeyException e) {
// ok
System.out.println(e);
}
// decryption failure
c.init(Cipher.DECRYPT_MODE, privateKey);
try {
c.doFinal(data);
throw new Exception("Unexpectedly completed call");
} catch (BadPaddingException e) {
// ok
System.out.println(e);
}
// wrong hash length
c.init(Cipher.ENCRYPT_MODE, publicKey);
enc = c.doFinal(data);
c = Cipher.getInstance("RSA/ECB/OAEPwithSHA1andMGF1Padding", cp);
c.init(Cipher.DECRYPT_MODE, privateKey);
try {
c.doFinal(enc);
throw new Exception("Unexpectedly completed call");
} catch (BadPaddingException e) {
// ok
System.out.println(e);
}
/* MD2 not supported with OAEP
// wrong hash value
c = Cipher.getInstance("RSA/ECB/OAEPwithMD2andMGF1Padding", cp);
c.init(Cipher.DECRYPT_MODE, privateKey);
try {
c.doFinal(enc);
throw new Exception("Unexpectedly completed call");
} catch (BadPaddingException e) {
// ok
System.out.println(e);
}
*/
// wrong padding type
c = Cipher.getInstance("RSA/ECB/PKCS1Padding", cp);
c.init(Cipher.ENCRYPT_MODE, publicKey);
enc = c.doFinal(data);
c = Cipher.getInstance("RSA/ECB/OAEPwithSHA1andMGF1Padding", cp);
c.init(Cipher.DECRYPT_MODE, privateKey);
try {
c.doFinal(enc);
throw new Exception("Unexpectedly completed call");
} catch (BadPaddingException e) {
// ok
System.out.println(e);
}
long stop = System.currentTimeMillis();
System.out.println("Done (" + (stop - start) + " ms).");
}
// NOTE: OAEP can process up to (modLen - 2*digestLen - 2) bytes of data
private static void testEncryptDecrypt(String hashAlg, int dataLength) throws Exception {
System.out.println("Testing OAEP with hash " + hashAlg + ", " + dataLength + " bytes");
Cipher c = Cipher.getInstance("RSA/ECB/OAEPwith" + hashAlg + "andMGF1Padding", cp);
c.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] data = new byte[dataLength];
byte[] enc = c.doFinal(data);
c.init(Cipher.DECRYPT_MODE, privateKey);
byte[] dec = c.doFinal(enc);
if (Arrays.equals(data, dec) == false) {
throw new Exception("Data does not match");
}
}
}