本文介绍了android 图像加密/解密 BufferedImage 和 ImageIO 未解析的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
下面给出的代码不适用于未解决的 android sdkBufferdImage 和 ImageIO".我试过实现Bitmap"和BitmapFactory",但它没有用.请帮我在android应用程序上做到这一点.请更正 android 应用程序.公共类计算器溢出{
Code given below ,is not working with the android sdk "BufferdImage and ImageIO " not resolved . I've tried to implement "Bitmap" and "BitmapFactory", but it did not work.Please help me to do this at android application . Please correct in for an android application .public class stackoverflow {
public static void main(String[] arg) throws Exception {
Scanner scanner = new Scanner(System.in);
byte[] salt = { (byte) 0xc7, (byte) 0x73, (byte) 0x21, (byte) 0x8c,
(byte) 0x7e, (byte) 0xc8, (byte) 0xee, (byte) 0x99 };
{
File inputFile = new File("C:/Users/AMD/Desktop/bhp/pngg.jpg");
BufferedImage input = ImageIO.read(inputFile);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
PBEKeySpec pbeKeySpec = new PBEKeySpec("pass".toCharArray());
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
pbeCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec);
FileOutputStream output = new FileOutputStream("C:/Users/AMD/Desktop/bhp/encrpngg.png");
CipherOutputStream cos = new CipherOutputStream(output, pbeCipher);
ImageIO.write(input,"PNG",cos);
cos.close();
inputFile.delete();
}
{
PBEKeySpec pbeKeySpec = new PBEKeySpec("pass".toCharArray());
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
pbeCipher.init(Cipher.DECRYPT_MODE, pbeKey, pbeParamSpec);
File inFile=new File("C:/Users/AMD/Desktop/bhp/encrpngg.png");
FileInputStream fis=new FileInputStream(inFile);
CipherInputStream cis=new CipherInputStream(fis, pbeCipher);
BufferedImage inpt=ImageIO.read(cis);
cis.close();
FileOutputStream output = new FileOutputStream("C:/Users/AMD/Desktop/bhp/decrpngg.jpg");
ImageIO.write(inpt,"PNG", output);
}
}
推荐答案
我没有得到加密的图像文件,可能是代码没有写入加密文件.解密码也有同样的东西....
I was not getting the encrpted image file, may be the code not write the encrypted file. Decryption code has the same thing ....
加密代码:
fileinputstrm=new FileInputStream(path);
BufferedInputStream input=new BufferedInputStream(fileinputstrm);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
PBEKeySpec pbeKeySpec = new PBEKeySpec("pass".toCharArray());
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
pbeCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec);
FileOutputStream output = new FileOutputStream(path + ".icrpt");
CipherOutputStream cos = new CipherOutputStream(output, pbeCipher);
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
output.write(bytes.toByteArray());
cos.close();
解密代码:
byte[] salt = { (byte) 0xc7, (byte) 0x73, (byte) 0x21, (byte) 0x8c,
(byte) 0x7e, (byte) 0xc8, (byte) 0xee, (byte) 0x99 };
fileinputstrm = new FileInputStream(path);
PBEKeySpec pbeKeySpec = new PBEKeySpec("pass".toCharArray());
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
pbeCipher.init(Cipher.DECRYPT_MODE, pbeKey, pbeParamSpec);
FileInputStream fis=new FileInputStream(path);
CipherInputStream cis=new CipherInputStream(fis, pbeCipher);
BufferedInputStream bfi=new BufferedInputStream(cis);
bfi.read();
cis.close();
FileOutputStream output1 = new FileOutputStream(path+".jpeg");
ByteArrayOutputStream baos=new ByteArrayOutputStream();
BufferedOutputStream bfo=new BufferedOutputStream(output1);
output1.write(baos.toByteArray());
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