Java的Android的URL加密 [英] java android URL encrypting
问题描述
我的工作将文件上载到Amazon S3(应用程序的一部分)的应用程序。但是,当我生成的文件的URL,它显示了认证密钥,文件名等。我需要加密的URL。另外我使用微小的网址缩短网址,但是当我把光标的链接,它显示了真正的URL。我找了MD5但我不能使它工作。请问有什么建议吗?
I am working on an application that uploads a file to amazon s3(part of the application). But when I generate the URL of the files, it shows the authentication key, file name and etc. I need to encrypt the URL. Also I am using tiny url to shorten the URL but when I put the curser on the link it shows the real URL. I looked for md5 but I couldn't make it work. Is there any suggestion?
推荐答案
我将试图解释MD5是如何工作的。
I will try to explain how MD5 works
import java.math.*;
import java.security.*;
public class testMain {
/**
* @param args
*/
public static void main(String[] args) {
String stringThatNeedsToBeEncrpyted = "yourURL"; // Value to encrypt
MessageDigest mdEnc = null;
try {
mdEnc = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} // Encryption algorithm
mdEnc.update(stringThatNeedsToBeEncrpyted.getBytes(), 0, stringThatNeedsToBeEncrpyted.length());
String md5 = new BigInteger(1, mdEnc.digest()).toString(16); //Make the Encrypted string
System.out.println(md5); //print the string in the console
}
}
输出是: 7f5976785d03c60f9fd4b08fb78e72ce 的
这是你的消息摘要。
修改
散列用户名和密码可以像PBKDF2,bcrypt或scrypt合适的哈希算法完成。而且始终使用SSL来传输机密数据。
Hashing a username and password should always be done with an appropriate hashing algorithm like PBKDF2, bcrypt or scrypt. Furthermore always use SSL to transfer confidential data.
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