之前测试是使用 pgpe -r minzheng jm.txt -o jm1.txt -a 加密方式加密的，可以直接解密
，但是去银行联调后发现银行使用的是pgpe –r AAA –s –u BBB FILE1 –o FILE2 方式加密的，然后就不能解密了。。。纠结。。。我是找了一段代码用代码解密的，
正常情况下不会进去下面这个判断
} else if (message instanceof PGPOnePassSignatureList) {
throw new PGPException(
"encrypted message contains a signed message - not literal data.");
}
以下是代码
package com.hunger;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.NoSuchProviderException;
import java.security.SecureRandom;
import java.security.Security;
import java.util.Iterator;
import org.bouncycastle.bcpg.ArmoredOutputStream;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openpgp.PGPCompressedData;
import org.bouncycastle.openpgp.PGPCompressedDataGenerator;
import org.bouncycastle.openpgp.PGPEncryptedData;
import org.bouncycastle.openpgp.PGPEncryptedDataGenerator;
import org.bouncycastle.openpgp.PGPEncryptedDataList;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPLiteralData;
import org.bouncycastle.openpgp.PGPOnePassSignatureList;
import org.bouncycastle.openpgp.PGPPrivateKey;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPPublicKeyEncryptedData;
import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
import org.bouncycastle.openpgp.PGPUtil;
import org.bouncycastle.openpgp.jcajce.JcaPGPObjectFactory;
import org.bouncycastle.openpgp.operator.jcajce.JcaKeyFingerprintCalculator;
import org.bouncycastle.openpgp.operator.jcajce.JcePGPDataEncryptorBuilder;
import org.bouncycastle.openpgp.operator.jcajce.JcePublicKeyDataDecryptorFactoryBuilder;
import org.bouncycastle.openpgp.operator.jcajce.JcePublicKeyKeyEncryptionMethodGenerator;
import org.bouncycastle.util.io.Streams;
public class PgpOperation {
public static void decryptFile(String inputFileName, String keyFileName,
char[] passwd, String defaultFileName) throws IOException,
NoSuchProviderException {
Security.addProvider(new BouncyCastleProvider());
InputStream in = new BufferedInputStream(new FileInputStream(
inputFileName));
InputStream keyIn = new BufferedInputStream(new FileInputStream(
keyFileName));
decryptFile(in, keyIn, passwd, defaultFileName);
keyIn.close();
in.close();
}
/**
* decrypt the passed in message stream
*/
private static void decryptFile(InputStream in, InputStream keyIn,
char[] passwd, String defaultFileName) throws IOException,
NoSuchProviderException {
in = PGPUtil.getDecoderStream(in);
try {
JcaPGPObjectFactory pgpF = new JcaPGPObjectFactory(in);
PGPEncryptedDataList enc;
Object o = pgpF.nextObject();
//
// the first object might be a PGP marker packet.
//
if (o instanceof PGPEncryptedDataList) {
enc = (PGPEncryptedDataList) o;
} else {
enc = (PGPEncryptedDataList) pgpF.nextObject();
}
//
// find the secret key
//
@SuppressWarnings("rawtypes")
Iterator it = enc.getEncryptedDataObjects();
PGPPrivateKey sKey = null;
PGPPublicKeyEncryptedData pbe = null;
PGPSecretKeyRingCollection pgpSec = new PGPSecretKeyRingCollection(
PGPUtil.getDecoderStream(keyIn),
new JcaKeyFingerprintCalculator());
while (sKey == null && it.hasNext()) {
pbe = (PGPPublicKeyEncryptedData) it.next();
sKey = PGPExampleUtil.findSecretKey(pgpSec, pbe.getKeyID(),
passwd);
}
if (sKey == null) {
throw new IllegalArgumentException(
"secret key for message not found.");
}
InputStream clear = pbe
.getDataStream(new JcePublicKeyDataDecryptorFactoryBuilder()
.setProvider("BC").build(sKey));
JcaPGPObjectFactory plainFact = new JcaPGPObjectFactory(clear);
PGPCompressedData cData = (PGPCompressedData) plainFact
.nextObject();
InputStream compressedStream = new BufferedInputStream(
cData.getDataStream());
JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(
compressedStream);
Object message = pgpFact.nextObject();
if (message instanceof PGPLiteralData) {
PGPLiteralData ld = (PGPLiteralData) message;
String outFileName = ld.getFileName();
// if (outFileName.length() == 0)
// {
outFileName = defaultFileName;
// }
InputStream unc = ld.getInputStream();
OutputStream fOut = new BufferedOutputStream(
new FileOutputStream(outFileName));
Streams.pipeAll(unc, fOut);
fOut.close();
} else if (message instanceof PGPOnePassSignatureList) {
throw new PGPException(
"encrypted message contains a signed message - not literal data.");
} else {
throw new PGPException(
"message is not a simple encrypted file - type unknown.");
}
if (pbe.isIntegrityProtected()) {
if (!pbe.verify()) {
System.err.println("message failed integrity check");
} else {
System.err.println("message integrity check passed");
}
} else {
System.err.println("no message integrity check");
}
} catch (PGPException e) {
System.err.println(e);
if (e.getUnderlyingException() != null) {
e.getUnderlyingException().printStackTrace();
}
}
}
public static void encryptFile(String outputFileName, String inputFileName,
String encKeyFileName, boolean armor, boolean withIntegrityCheck)
throws IOException, NoSuchProviderException, PGPException {
Security.addProvider(new BouncyCastleProvider());
OutputStream out = new BufferedOutputStream(new FileOutputStream(
outputFileName));
PGPPublicKey encKey = PGPExampleUtil.readPublicKey(encKeyFileName);
encryptFile(out, inputFileName, encKey, armor, withIntegrityCheck);
out.close();
}
private static void encryptFile(OutputStream out, String fileName,
PGPPublicKey encKey, boolean armor, boolean withIntegrityCheck)
throws IOException, NoSuchProviderException {
if (armor) {
out = new ArmoredOutputStream(out);
}
try {
PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(
new JcePGPDataEncryptorBuilder(PGPEncryptedData.CAST5)
.setWithIntegrityPacket(withIntegrityCheck)
.setSecureRandom(new SecureRandom())
.setProvider("BC"));
cPk.addMethod(new JcePublicKeyKeyEncryptionMethodGenerator(encKey)
.setProvider("BC"));
OutputStream cOut = cPk.open(out, new byte[1 << 16]);
PGPCompressedDataGenerator comData = new PGPCompressedDataGenerator(
PGPCompressedData.ZIP);
PGPUtil.writeFileToLiteralData(comData.open(cOut),
PGPLiteralData.BINARY, new File(fileName),
new byte[1 << 16]);
comData.close();
cOut.close();
if (armor) {
out.close();
}
} catch (PGPException e) {
System.err.println(e);
if (e.getUnderlyingException() != null) {
e.getUnderlyingException().printStackTrace();
}
}
}
public static void main(String[] args) throws Exception {
Security.addProvider(new BouncyCastleProvider());
if (args.length == 0) {
System.err
.println("usage: KeyBasedLargeFileProcessor -e|-d [-a|ai] file [secretKeyFile passPhrase|pubKeyFile]");
return;
}
if (args[0].equals("-e")) {
if (args[1].equals("-a") || args[1].equals("-ai")
|| args[1].equals("-ia")) {
encryptFile(args[2] + ".asc", args[2], args[3], true,
(args[1].indexOf('i') > 0));
} else if (args[1].equals("-i")) {
encryptFile(args[2] + ".bpg", args[2], args[3], false, true);
} else {
encryptFile(args[1] + ".bpg", args[1], args[2], false, false);
}
} else if (args[0].equals("-d")) {
decryptFile(args[1], args[2], args[3].toCharArray(), args[4]);
} else {
System.err
.println("usage: KeyBasedLargeFileProcessor -d|-e [-a|ai] file [secretKeyFile passPhrase|pubKeyFile]");
}
}
}
