【发布时间】：2017-01-26 20:42:46
【问题描述】：
我得到了一个
InvalidKeyException：非法密钥大小或默认参数
尝试运行已部署 WAR 的 Web 应用程序时。我将它托管在 Linux 环境中的 Tomcat 上。我已经把这两个UnlimitedJCEPolicy文件放到了目的地/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.55.x86_64/jre/lib/security，看来还是出现错误。请注意，这只在我在 linux 环境中运行时才会抛出。在本地，它工作正常。这是我的代码：
public static final void decryptFile(File inputFile, File outputFile) throws
IOException, PGPException {
// Add Bouncy Castle provider
Security.addProvider(new BouncyCastleProvider());
// Grab secret key that's in folder with AE classes
Resource resource = new ClassPathResource(Env.getSecretKeyAE());
log.debug("Resource: " + Env.getSecretKeyAE());
File keyFileName = resource.getFile();
log.debug("Key File Name: " + keyFileName);
// Decryption password
String pass = "pass";
char[] passwd = pass.toCharArray();
// Read files into streams
log.info("Reading files into streams");
InputStream keyIn = new BufferedInputStream(new FileInputStream(keyFileName));
InputStream in = PGPUtil.getDecoderStream(new BufferedInputStream(new
FileInputStream(inputFile)));
// I don't even know what these do
PGPObjectFactory pgpObjFactory = new PGPObjectFactory(in);
PGPEncryptedDataList pgpEncryptedDataList = null;
Object o = pgpObjFactory.nextObject();
log.info("Checking instance of PGPEncryptedDataList");
if (o instanceof PGPEncryptedDataList) {
pgpEncryptedDataList = (PGPEncryptedDataList)o;
}
else {
pgpEncryptedDataList = (PGPEncryptedDataList)pgpObjFactory.nextObject();
}
// This will be the PGPPrivateKey we use to decrypt
log.info("Initializing secret key");
PGPPrivateKey secretKey = null;
PGPPublicKeyEncryptedData publicKeyEncryptedData = null;
PGPSecretKeyRingCollection pgpSecretKeyRingCollection = new
PGPSecretKeyRingCollection(PGPUtil.getDecoderStream(keyIn));
// This iterates the key file as if it has many keys, this file has only one
// This is the only way I could find to construct a PGPPrivateKey
log.info("Iterating through key file");
Iterator<?> it = pgpEncryptedDataList.getEncryptedDataObjects();
while(it.hasNext() && secretKey == null) {
publicKeyEncryptedData = (PGPPublicKeyEncryptedData) it.next();
PGPSecretKey pgpSecKey =
pgpSecretKeyRingCollection.getSecretKey(publicKeyEncryptedData.getKeyID());
if (pgpSecKey != null) {
Provider provider = Security.getProvider("BC");
secretKey = pgpSecKey.extractPrivateKey(new
JcePBESecretKeyDecryptorBuilder(new
JcaPGPDigestCalculatorProviderBuilder().setProvider(provider)
.build()).setProvider(provider).build(passwd));
}
}
log.info("PGPPrivateKey has been constructed");
if (secretKey == null) {
throw new IllegalArgumentException("secret key for message not found.");
}
log.info("Secret Key found!");
if(publicKeyEncryptedData == null) {
throw new NullPointerException("cannot continue with null public key encryption
data.");
}
log.info("Public Key Encrypted Data found!");
// More stuff I don't fully understand, I think this is just standard way to
decrypt files once the above is all set up
log.info("Starting actual decryption");
//get data stream where our publicKeyDataDecrypterFactory sets ours provider to BC
and we build our secretKey
//secretkey is our PGPPrivateKey
log.info("start");
//=====================================================================
//ERROR IS OCCURRING HERE
InputStream clear = publicKeyEncryptedData.getDataStream(new
JcePublicKeyDataDecryptorFactoryBuilder().setProvider("BC").build(secretKey));
log.info("1");
PGPObjectFactory plainFact = new PGPObjectFactory(clear);
log.info("2");
PGPCompressedData compressedData = (PGPCompressedData)plainFact.nextObject();
log.info("3");
InputStream compressedStream = new
BufferedInputStream(compressedData.getDataStream());
log.info("4");
PGPObjectFactory pgpFact = new PGPObjectFactory(compressedStream);
log.info("5");
Object message = pgpFact.nextObject();
log.info("6");
if (message instanceof PGPLiteralData) {
log.info("Our message is an instance of PGP Literal Data.");
PGPLiteralData literalData = (PGPLiteralData)message;
InputStream literalDataInputStream = literalData.getInputStream();
OutputStream out = new BufferedOutputStream(new FileOutputStream(outputFile));
Streams.pipeAll(literalDataInputStream, out);
out.close();
}
else if (message instanceof PGPOnePassSignatureList) {
log.error("encrypted message contains a signed message - not literal data.");
throw new PGPException("encrypted message contains a signed message - not
literal data.");
}
else {
log.error("message is not a simple encrypted file - type unknown.");
throw new PGPException("message is not a simple encrypted file - type
unknown.");
}
log.info("Checking if public key encrypted data is integrity protected");
if (publicKeyEncryptedData.isIntegrityProtected()) {
if (!publicKeyEncryptedData.verify()) {
throw new PGPException("message failed integrity check");
}
}
keyIn.close();
in.close();
}
使用日志，我能够发现错误发生的时间
InputStream clear = publicKeyEncryptedData.getDataStream(new
JcePublicKeyDataDecryptorFactoryBuilder().setProvider("BC").build(secretKey));
但我不知道为什么。就像我说的，我已经适当地放置了 JCEUnlimited 文件，但错误仍然存在。
编辑我修复了非法密钥大小问题，但现在出现“无法识别密钥规范”
EDIT 对错误“关键规范无法识别”的详细说明： 所以正如我所说，非法密钥大小已经消失，但“密钥规格无法识别”似乎仍然是一个问题。奇怪的是，我的 encryptFile 方法运行良好，但 decryptFile 抛出错误。我不完全确定为什么。下班前，我又测试了一次，似乎没有抛出错误。我几乎似乎这个错误是随机发生的，具体取决于 WAR 到 tomcat 的部署。如果我部署我的 WAR，则在某些时候不会发生错误，但如果我取消部署并使用更新的 WAR 文件重新部署，则会引发错误。我不知道是什么原因造成的，而且基于研究也没有人真正知道。显然这曾经是 1.5 之前 Bouncy Castle 中的一个错误，但 1.5 是我正在运行的版本，所以这不是问题。如果我发现任何可以修复此错误的内容，我会发布。
【问题讨论】：
-
因为我使用的是 Tomcat，所以我的 java home 实际上在我的 opt 文件夹中。我必须放置 UnlimitedJCEPolicy 文件的确切位置是 /opt/jre1.7.0_60/lib/security。将文件放在那里并重新部署我的 war 文件后，我不再遇到这个问题了。
标签： java linux bouncycastle pgp