文中包含PGP的加密、解密，其中用到的jar包如下
加密：
public class PgpEncry {
/**
* 加密入口 .txt---->.pgp
* @param encryFile
* @param publicasc
* @return
* @throws Exception
*/
public static String Encry(String encryFile, String publicasc ) throws Exception
{
encryFile = encryFile.replace('\\', '/');
String encryedFile = PgpTool.DestFileName(encryFile);
Encry(encryFile,encryedFile,publicasc);
return encryedFile;
}
/**
* .txt---->.txt.pgp
* @param encryFile
* @param publicasc
* @return
* @throws Exception
*/
public static String Encry2(String encryFile, String publicasc ) throws Exception
{
encryFile = encryFile.replace('\\', '/');
String encryedFile = PgpTool.DestFileName2(encryFile);
Encry(encryFile,encryedFile,publicasc);
return encryedFile;
}
/**
* 加密主程序
* @param encryFile
* @param encryedFile
* @param publicasc
* @throws Exception
*/
private static void Encry(String encryFile, String encryedFile,
String publicasc) throws Exception {
java.security.Security
.addProvider(new cryptix.jce.provider.CryptixCrypto());
java.security.Security
.addProvider(new cryptix.openpgp.provider.CryptixOpenPGP());
KeyBundle publicBob = null;
FileInputStream inEncry = null;
try
{
Collection msgs;
KeyBundleMessage kbm;
MessageFactory mf = MessageFactory.getInstance("OpenPGP");
inEncry = new FileInputStream(publicasc);
msgs = mf.generateMessages(inEncry);
kbm = (KeyBundleMessage) msgs.iterator().next();
publicBob = kbm.getKeyBundle();
inEncry.close();
inEncry = null;
}
catch (Exception me)
{
System.err.println("读密钥出错.");
me.printStackTrace();
throw me;
} finally {
try
{
if (inEncry != null)
inEncry.close();
inEncry = null;
}
catch (Exception e)
{
e.printStackTrace();
}
}
FileOutputStream fileos = null;
LiteralMessageOutputStream litmos = null;
EncryptedMessageOutputStream encmos = null;
FileInputStream inputEncryStream = null;
try
{
inputEncryStream = new FileInputStream(encryFile);
fileos = new FileOutputStream(encryedFile);
litmos = LiteralMessageOutputStream.getInstance("OpenPGP");
encmos = EncryptedMessageOutputStream.getInstance("OpenPGP");
SecureRandom sr = new SecureRandom();
litmos.init(encmos, sr);
encmos.init(fileos, sr);
encmos.addRecipient(publicBob);
byte[] buf = new byte[4096];
int len = inputEncryStream.read(buf);
while (len > 0)
{
litmos.write(buf, 0, len);
len = inputEncryStream.read(buf);
}
litmos.close();
fileos.close();
inputEncryStream.close();
encmos = null;
litmos = null;
inputEncryStream = null;
fileos = null;
sr = null;
}
catch (Exception ioe)
{
System.err.println("IO error.");
ioe.printStackTrace();
throw ioe;
}
finally
{
try {
if (inputEncryStream != null)
inputEncryStream.close();
inputEncryStream = null;
if (fileos != null)
fileos.close();
fileos = null;
if (litmos != null)
litmos.close();
litmos = null;
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws Exception {
PgpEncryUtil.Encry("需要加密的文件“, "加密后的文件" ,"公钥");
}
}
解密：
public class PgpDecry implements DecryptionKeyCallback,VerificationKeyCallback {
private PGPKeyBundle publicAlice = null;
private PGPKeyBundle secretBob = null;
private String Passphrase;
public String getPassphrase()
{
return Passphrase;
}
public void setPassphrase(String passphrase)
{
Passphrase = passphrase;
}
public void DecryUtil(String decryFile, String decryedFile, String secretasc) throws Exception
{
java.security.Security.addProvider(new cryptix.jce.provider.CryptixCrypto());
java.security.Security.addProvider(new cryptix.openpgp.provider.CryptixOpenPGP());
FileInputStream inAsc = null;;
try {
Collection msgs;
KeyBundleMessage kbm;
MessageFactory mf = MessageFactory.getInstance("OpenPGP");
inAsc = new FileInputStream(secretasc);
msgs = mf.generateMessages(inAsc);
kbm = (KeyBundleMessage) msgs.iterator().next();
secretBob = (PGPKeyBundle) kbm.getKeyBundle();
inAsc.close();
inAsc = null;
}
catch (Exception me)
{
System.err.println("Reading keybundle failed.");
me.printStackTrace();
throw me;
}
finally
{
try {
if (inAsc != null)
inAsc.close();
inAsc = null;
}
catch (Exception e)
{
e.printStackTrace();
}
}
FileInputStream inDecry = null;
FileOutputStream outDecryed = null;
try
{
inDecry = new FileInputStream(decryFile);
outDecryed = new FileOutputStream(decryedFile);
DecodedMessageInputStream decodedInputStream
= DecodedMessageInputStream.getInstance("OpenPGP");
decodedInputStream.init(inDecry, this, this);
System.out.println("Decoding message...");
byte[] buf = new byte[4096];
int len = decodedInputStream.read(buf);
while (len > 0)
{
outDecryed.write(buf, 0, len);
len = decodedInputStream.read(buf);
}
System.out.println("Decoding done.");
}
catch (Exception ioe)
{
System.err.println("IO error.");
ioe.printStackTrace();
throw ioe;
} finally
{
try
{
if (inDecry != null)
inDecry.close();
inDecry = null;
if (outDecryed != null)
outDecryed.close();
outDecryed = null;
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
public VerificationKeyReturnValue getVerificationKey(
VerificationKeyRequest request) {
try {
if (request.getRetryCount() >= 1)
return new VerificationKeyReturnValue(
VerificationKeyReturnValue.IGNORE);
KeyID[] hintIDs = request.getKeyIDHints();
KeyIDFactory kidf = KeyIDFactory.getInstance("OpenPGP");
KeyID aliceID = kidf.generateKeyID((PublicKey) publicAlice
.getPublicKeys().next());
for (int i = 0; i < hintIDs.length; i++)
if (hintIDs[i].match(aliceID))
return new VerificationKeyReturnValue(publicAlice);
return new VerificationKeyReturnValue(
VerificationKeyReturnValue.IGNORE);
}
catch (NoSuchAlgorithmException nsae)
{
System.err.println("Cannot find OpenPGP implementation."
+ " This usually means that the Cryptix " +
"OpenPGP provider is not "
+ "installed correctly.");
nsae.printStackTrace();
throw new RuntimeException();
}
catch (InvalidKeyException ike)
{
System.err.println("Invalid key.");
ike.printStackTrace();
throw new RuntimeException();
}
}
public DecryptionKeyReturnValue getDecryptionKey(
DecryptionKeyRequest request) {
try
{
if (request.getRetryCount() >= 1)
return new DecryptionKeyReturnValue(
DecryptionKeyReturnValue.FAIL);
KeyID[] hintIDs = request.getKeyIDHints();
KeyIDFactory kidf = KeyIDFactory.getInstance("OpenPGP");
KeyID bobID = kidf.generateKeyID((PublicKey)
secretBob.getPublicKeys().next());
for (int i = 0; i < hintIDs.length; i++)
{
if (hintIDs[i].match(bobID))
return new DecryptionKeyReturnValue(secretBob,
Passphrase.toCharArray());
Iterator it = secretBob.getPublicSubKeys();
while (it.hasNext())
{
KeyID bobSubID = kidf.generateKeyID((PublicKey) it.next());
if (hintIDs[i].match(bobSubID))
return new DecryptionKeyReturnValue(secretBob,
Passphrase.toCharArray());
}
}
return new DecryptionKeyReturnValue(DecryptionKeyReturnValue.FAIL);
}
catch (Exception ike)
{
System.err.println("Invalid key.");
ike.printStackTrace();
throw new RuntimeException();
}
}
public static void main(String[] args) {
try{
/**
* 定义解密类
*/
PgpDecryUtil decryU = new PgpDecryUtil();
/**
* 设置密码
*/
decryU.setPassphrase("BOCHQ_FORMS_P3WD");
/**
* 需要解密的文件名 、解密后的文件名、 私钥 、
*/
decryU.DecryUtil("需要解密的文件", "解密后的文件", "私钥");
}
catch(Exception e)
{
e.printStackTrace();
}
}
}