java bouncy castle RSA 4096解密填充错误
我用公钥rsa 4096加密了一个包含“Loliol”的私钥的文件,并尝试解密了两天。然后我得到了填充错误,我尝试了所有方法,我得到了错误java bouncy castle RSA 4096解密填充错误,java,encryption,file-io,rsa,padding,Java,Encryption,File Io,Rsa,Padding,我用公钥rsa 4096加密了一个包含“Loliol”的私钥的文件,并尝试解密了两天。然后我得到了填充错误,我尝试了所有方法,我得到了错误Javax.crypto.BadPaddingException:Decryption error 即使在读取填充上的文档后,我也没有成功:加密工作正常,但解密包含错误 这是我的密码: import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; impo
Javax.crypto.BadPaddingException:Decryption error
即使在读取填充上的文档后,我也没有成功:加密工作正常,但解密包含错误
这是我的密码:
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.Security;
import javax.crypto.Cipher;
import sun.misc.BASE64Encoder;
public class GenerateRSAKeys{
private Key pubKey;
private Key privKey;
public static void main(String[] args)
{
String input = "C:\\Users\\toto\\Desktop\\nomFichier_entrant.ext";
String output = "C:\\Users\\toto\\Desktop\\nomFichier_entrant.ext.enc";
String dec = "C:\\Users\\toto\\Desktop\\nomFichier_entrant.ext.dec";
String publicKeyFilename = "C:\\Users\\toto\\Desktop\\HR_pubkey_prd.pem";
String privateKeyFilename = "C:\\Users\\toto\\Desktop\\PE_privkey_prd.pem";
GenerateRSAKeys generateRSAKeys = new GenerateRSAKeys();
/* if (args.length < 2)
{
System.err.println("Usage: java "+ generateRSAKeys.getClass().getName()+
" Public_Key_Filename Private_Key_Filename");
System.exit(1);
}
publicKeyFilename = args[0].trim();
privateKeyFilename = args[1].trim(); */
generateRSAKeys.generate(publicKeyFilename, privateKeyFilename);
//generateRSAKeys.encrypt(input, output);
generateRSAKeys.encrypt(input, output);
generateRSAKeys.decrypt(output, dec);
}
private void generate (String publicKeyFilename, String privateFilename){
try {
Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
// Create the public and private keys
KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "BC");
BASE64Encoder b64 = new BASE64Encoder();
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
/* SecureRandom random = new SecureRandom();
keyGen.initialize(4096, random);
KeyPair pair = keyGen.generateKeyPair();
pubKey = pair.getPublic();
privKey = pair.getPrivate(); */
SecureRandom random = createFixedRandom();
generator.initialize(4096, random);
KeyPair pair = generator.generateKeyPair();
pubKey = pair.getPublic();
privKey = pair.getPrivate();
System.out.println("publicKey : " + b64.encode(pubKey.getEncoded()));
System.out.println("privateKey : " + b64.encode(privKey.getEncoded()));
BufferedWriter out = new BufferedWriter(new FileWriter(publicKeyFilename));
out.write(b64.encode(pubKey.getEncoded()));
out.close();
out = new BufferedWriter(new FileWriter(privateFilename));
out.write(b64.encode(privKey.getEncoded()));
out.close();
}
catch (Exception e) {
System.out.println(e);
}
}
public static SecureRandom createFixedRandom()
{
return new FixedRand();
}
private static class FixedRand extends SecureRandom {
MessageDigest sha;
byte[] state;
FixedRand() {
try
{
this.sha = MessageDigest.getInstance("SHA-1");
this.state = sha.digest();
}
catch (NoSuchAlgorithmException e)
{
throw new RuntimeException("can't find SHA-1!");
}
}
public void nextBytes(byte[] bytes){
int off = 0;
sha.update(state);
while (off < bytes.length)
{
state = sha.digest();
if (bytes.length - off > state.length)
{
System.arraycopy(state, 0, bytes, off, state.length);
}
else
{
System.arraycopy(state, 0, bytes, off, bytes.length - off);
}
off += state.length;
sha.update(state);
}
}
}
public void encrypt(String input, String output) {
File outputFile;
FileInputStream inputStream;
FileOutputStream outputStream;
Cipher cipher;
byte[] inputBytes;
byte[] outputBytes;
try {
outputFile = new File(output);
inputStream = new FileInputStream(input);
outputStream = new FileOutputStream(outputFile);
cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, pubKey);
inputBytes = new byte[(int) input.length()];
inputStream.read(inputBytes);
outputBytes = cipher.doFinal(inputBytes);
outputStream.write(outputBytes);
// System.out.println(new String(inputBytes, "UTF-8"));
System.out.println("encrypt");
System.out.println(new String(outputBytes, "UTF-8"));
System.out.println("fin encrypt");
} catch (Exception e) {
e.printStackTrace();
}
}
public void decrypt(String input, String output) {
File outputFile;
FileInputStream inputStream;
FileOutputStream outputStream;
Cipher cipher;
byte[] inputBytes;
byte[] outputBytes;
try {
outputFile = new File(output);
inputStream = new FileInputStream(input);
outputStream = new FileOutputStream(outputFile);
cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, privKey);
inputBytes = new byte[(int) input.length()];
inputStream.read(inputBytes);
outputBytes = cipher.doFinal(inputBytes);
outputStream.write(outputBytes);
// System.out.println(new String(inputBytes, "UTF-8"));
System.out.println("decrypt");
System.out.println(new String(outputBytes, "UTF-8"));
System.out.println("fin decrypt");
} catch (Exception e) {
e.printStackTrace();
}
}
}
导入java.io.BufferedWriter;
导入java.io.File;
导入java.io.FileInputStream;
导入java.io.FileOutputStream;
导入java.io.FileWriter;
导入java.security.Key;
导入java.security.KeyPair;
导入java.security.KeyPairGenerator;
导入java.security.MessageDigest;
导入java.security.NoSuchAlgorithmException;
导入java.security.SecureRandom;
导入java.security.security;
导入javax.crypto.Cipher;
导入sun.misc.base64编码器;
公共类生成器{
私钥公开密钥;
私钥;
公共静态void main(字符串[]args)
{
String input=“C:\\Users\\toto\\Desktop\\nomFichier\u entrant.ext”;
字符串输出=“C:\\Users\\toto\\Desktop\\nomFichier\u entrant.ext.enc”;
String dec=“C:\\Users\\toto\\Desktop\\nomFichier\u entrant.ext.dec”;
String publicKeyFilename=“C:\\Users\\toto\\Desktop\\HR\u pubkey\u prd.pem”;
String privateKeyFilename=“C:\\Users\\toto\\Desktop\\PE\u privkey\u prd.pem”;
GeneratorSakeys GeneratorSakeys=新的GeneratorSakeys();
/*如果(参数长度<2)
{
System.err.println(“用法:java”+generateRSAKeys.getClass().getName()+
“公用密钥文件名专用密钥文件名”);
系统出口(1);
}
publicKeyFilename=args[0].trim();
privateKeyFilename=args[1].trim()*/
generate(publicKeyFilename、privateKeyFilename);
//GeneratorSakeys.加密(输入、输出);
GeneratorSakeys.加密(输入、输出);
GeneratorSakeys.decrypt(输出,dec);
}
private void generate(字符串publicKeyFilename、字符串privateFilename){
试一试{
addProvider(新org.bouncycastle.jce.provider.BouncyCastleProvider());
//创建公钥和私钥
KeyPairGenerator generator=KeyPairGenerator.getInstance(“RSA”、“BC”);
BASE64Encoder b64=新的BASE64Encoder();
KeyPairGenerator keyGen=KeyPairGenerator.getInstance(“RSA”);
/*SecureRandom=新的SecureRandom();
密钥初始化(4096,随机);
KeyPair=keyGen.generateKeyPair();
pubKey=pair.getPublic();
privKey=pair.getPrivate()*/
SecureRandom=createFixedRandom();
生成器。初始化(4096,随机);
KeyPair=generator.generateKeyPair();
pubKey=pair.getPublic();
privKey=pair.getPrivate();
System.out.println(“publicKey:+b64.encode(publicKey.getEncoded()));
System.out.println(“privateKey:+b64.encode(privKey.getEncoded()));
BufferedWriter out=新的BufferedWriter(新的FileWriter(publicKeyFilename));
out.write(b64.encode(pubKey.getEncoded());
out.close();
out=新的BufferedWriter(新的FileWriter(privateFilename));
out.write(b64.encode(privKey.getEncoded());
out.close();
}
捕获(例外e){
系统输出打印ln(e);
}
}
公共静态SecureRandom createFixedRandom()
{
返回新的FixedRand();
}
私有静态类FixedRand扩展SecureRandom{
沙祖康;
字节[]状态;
FixedRand(){
尝试
{
this.sha=MessageDigest.getInstance(“sha-1”);
this.state=sha.digest();
}
捕获(无算法异常)
{
抛出新的RuntimeException(“找不到SHA-1!”);
}
}
public void nextBytes(字节[]字节){
int off=0;
sha.更新(州);
while(关闭state.length)
{
数组复制(状态,0,字节,关闭,状态,长度);
}
其他的
{
System.arraycopy(状态,0,字节,关闭,字节.长度-关闭);
}
off+=状态长度;
sha.更新(州);
}
}
}
公共void加密(字符串输入、字符串输出){
文件输出文件;
文件输入流输入流;
FileOutputStream输出流;
密码;
字节[]输入字节;
字节[]输出字节;
试一试{
outputFile=新文件(输出);
inputStream=新文件inputStream(输入);
outputStream=新文件outputStream(outputFile);
cipher=cipher.getInstance(“RSA”);
cipher.init(cipher.ENCRYPT_模式,pubKey);
inputBytes=新字节[(int)input.length()];
inputStream.read(inputBytes);
outputBytes=cipher.doFinal(inputBytes);
outputStream.write(outputBytes);
//System.out.println(新字符串(inputBytes,“UTF-8”);
System.out.println(“加密”);
System.out.println(新字符串(outputBytes,“UTF-8”);
System.out.println(“fin加密”);
}捕获(例外e){
e、 printStackTrace();
}
}
公共无效解密(字符串输入、字符串输出){
文件输出文件;
文件输入流输入流;
FileOutputStream输出流;
密码;
字节[]输入字节;
字节[]输出字节;
试一试{
输出
File inputFile = new File(input);
FileInputStream inputStream = new FileInputStream(inputFile);
FileOutputStream outputStream = new FileOutputStream(output);
byte[] inputBytes = new byte[(int) inputFile.length()];
int readBytes = inputStream.read(inputBytes);
byte[] outputBytes = cipher.doFinal(inputBytes, 0, readBytes);
public void encrypt(String input, String output) {
File inputFile;
FileInputStream inputStream;
FileOutputStream outputStream;
Cipher cipher;
byte[] inputBytes;
byte[] outputBytes;
try {
System.out.println("encrypt");
cipher = Cipher.getInstance("RSA/ECB/OAEPWithSHA-256AndMGF1Padding");
cipher.init(Cipher.ENCRYPT_MODE, pubKey);
inputFile = new File(input);
inputStream = new FileInputStream(inputFile);
outputStream = new FileOutputStream(output);
inputBytes = new byte[(int) input.length()];
int readBytes = inputStream.read(inputBytes);
outputBytes = cipher.doFinal(inputBytes, 0, readBytes);
outputStream.write(outputBytes);
System.out.println("fin encrypt");
inputStream.close();
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void decrypt(String input, String output) {
File inputFile;
FileInputStream inputStream;
FileOutputStream outputStream;
Cipher cipher;
byte[] inputBytes;
byte[] outputBytes;
try {
System.out.println("decrypt");
cipher = Cipher.getInstance("RSA/ECB/OAEPWithSHA-256AndMGF1Padding");
cipher.init(Cipher.DECRYPT_MODE, privKey);
inputFile = new File(input);
inputStream = new FileInputStream(inputFile);
outputStream = new FileOutputStream(output);
inputBytes = new byte[(int) inputFile.length()];
int readBytes = inputStream.read(inputBytes);
outputBytes = cipher.doFinal(inputBytes, 0, readBytes);
outputStream.write(outputBytes);
System.out.println("Decryption result: " + new String(outputBytes, "UTF-8"));
System.out.println("fin decrypt");
inputStream.close();
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}