我在PGP桌面有两个PGP密钥。

Key1 - 在我的PGP桌面中创建。其中包含公钥和私钥

Key2 - 由我的客户创建并与我们共享公钥。我只在我的PGP桌面中添加了key2公钥。

现在我使用上面的两个密钥加密文件。我可以使用PGP Desktop成功解密文件。

但是我无法使用Java API解密文件。

public static void decryptFile(File input, File key, char[] passwd, File destDir) throws Exception {

File destFile = null;

InputStream keyIn = new FileInputStream(key);

Security.addProvider(new BouncyCastleProvider());

InputStream is = new FileInputStream(input);

InputStream in = org.bouncycastle.openpgp.PGPUtil.getDecoderStream(is);

try {

PGPObjectFactory pgpF = new PGPObjectFactory(in);

PGPEncryptedDataList enc;

Object o = pgpF.nextObject();

if (o instanceof PGPEncryptedDataList) {

enc = (PGPEncryptedDataList) o;

} else {

enc = (PGPEncryptedDataList) pgpF.nextObject();

}

Iterator encDataObjects = enc.getEncryptedDataObjects();

PGPPublicKeyEncryptedData encryptedData = null;

List keyIds = new LinkedList();

while (encDataObjects.hasNext()) {

encryptedData = (PGPPublicKeyEncryptedData) encDataObjects.next();

long decipheringKeyID = encryptedData.getKeyID();

System.out.println("****** Key ID ****** "+decipheringKeyID);

keyIds.add(decipheringKeyID);

}

PGPSecretKey decipheringKey = readSecretKey(keyIn, keyIds);

if (decipheringKey == null) {

throw new IllegalArgumentException("Secret key for message not found.");

}

PGPPrivateKey decryptionKey = findPrivateKey(decipheringKey, passwd);

if (decryptionKey == null) {

throw new IllegalArgumentException("Private key for message not found.");

}

PublicKeyDataDecryptorFactory dataDecryptorFactory = new BcPublicKeyDataDecryptorFactory(decryptionKey);

InputStream clear = encryptedData.getDataStream(dataDecryptorFactory);

PGPObjectFactory plainFact = new PGPObjectFactory(clear);

Object message = plainFact.nextObject();

if (message instanceof PGPCompressedData) {

PGPCompressedData cData = (PGPCompressedData) message;

PGPObjectFactory pgpFact = new PGPObjectFactory(cData.getDataStream());

message = pgpFact.nextObject();

}

if (message instanceof PGPOnePassSignatureList) {

// TODO: Verify file

message = plainFact.nextObject();

}

if (message instanceof PGPLiteralData) {

PGPLiteralData ld = (PGPLiteralData) message;

InputStream unc = ld.getInputStream();

int ch;

ByteArrayOutputStream out = new ByteArrayOutputStream();

if(ld.getFileName().toString() == null || ld.getFileName().toString().equals(""))

{

String[] fname = input.getAbsolutePath().split("\\\\");

destFile = new File(destDir,fname[fname.length-1].replace(".pgp", ""));

}

else

{

destFile = new File(destDir, ld.getFileName());

}

FileOutputStream fos = new FileOutputStream(destFile);

while ((ch = unc.read()) >= 0) {

out.write(ch);

}

byte[] returnBytes = out.toByteArray();

out.close();

fos.write(returnBytes);

fos.close();

} else {

throw new PGPException("Message is not a simple encrypted file - type unknown.");

}

} catch (Exception ex) {

ex.printStackTrace();

throw new Exception(ex.getMessage());

} finally {

if (keyIn != null) {

keyIn.close();

}

if (in != null) {

in.close();

}

if (is != null) {

is.close();

}

}

}我得到以下错误

org.bouncycastle.openpgp.PGPException: exception encrypting session info: unknown block type

at org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory.recoverSessionData(Unknown Source)

at org.bouncycastle.openpgp.PGPPublicKeyEncryptedData.getDataStream(Unknown Source)

at com.pgp.util.PGPUtils.decryptFile(PGPUtils.java:312)

at com.pgp.util.PGPUtils.main(PGPUtils.java:576)

Caused by: org.bouncycastle.crypto.InvalidCipherTextException: unknown block type

at org.bouncycastle.crypto.encodings.PKCS1Encoding.decodeBlock(Unknown Source)

at org.bouncycastle.crypto.encodings.PKCS1Encoding.processBlock(Unknown Source)

at org.bouncycastle.crypto.BufferedAsymmetricBlockCipher.doFinal(Unknown Source)

... 4 more

Exception in thread "main" java.lang.Exception: exception encrypting session info: unknown block type

at com.pgp.util.PGPUtils.decryptFile(PGPUtils.java:373)

at com.pgp.util.PGPUtils.main(PGPUtils.java:576)