2

我使用 java keytool 创建了一个密钥库，以使用以下命令存储密码

$ keytool -importpassword -alias myalias -keystore mykeystore.jceks -storetype jceks 
Enter keystore password:  keystore
Re-enter new password: keystore
Enter the password to be stored: testpassword 
Re-enter password: testpassword
Enter key password for <myalias>
    (RETURN if same as keystore password):

我想在 java 程序中检索此密码。这是我到目前为止所写的。

InputStream is = new FileInputStream(new File("mykeystore.jceks"));
KeyStore ks = KeyStore.getInstance("jceks");
ks.load(is, "keystore".toCharArray());
PasswordProtection pp = new PasswordProtection("keystore".toCharArray());
SecretKeyEntry ske = (SecretKeyEntry) ks.getEntry("myalias", pp);
System.out.println(ske.toString()); // Outputs: "Secret key entry with algorithm PBEWithMD5AndDES"

如何取回我存储的密码？甚至可能吗？

完整的参考代码如下。

所需库：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

import java.security.Key;
import java.security.KeyStore;
import java.security.KeyStore.PasswordProtection;
import java.security.KeyStore.SecretKeyEntry;

import java.security.cert.CertificateException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.UnrecoverableEntryException;

班级：

class JCEKS 
{  
    public static void main(String args[]) 
    {
        try{
            InputStream is = new FileInputStream(new File("mykeystore.jceks"));
            KeyStore ks = KeyStore.getInstance("jceks");
            ks.load(is, "keystore".toCharArray());
            PasswordProtection pp = new PasswordProtection("keystore".toCharArray());
            SecretKeyEntry ske = (SecretKeyEntry) ks.getEntry("myalias", pp);

            System.out.println(ske.toString());
        }
        catch(KeyStoreException e){
            System.out.println("KeyStoreException:");
            System.out.println(e);
        }
        catch(FileNotFoundException e){
            System.out.println("FileNotFoundException:");
            System.out.println(e.getMessage());
        }
        catch(IOException e){
            System.out.println("IOException:");
            System.out.println(e.getMessage());
        }
        catch(NoSuchAlgorithmException e){
            System.out.println("NoSuchAlgorithmException:");
            System.out.println(e.getMessage());
        }
        catch(CertificateException e){
            System.out.println("CertificateException:");
            System.out.println(e.getMessage());
        }
        catch(UnrecoverableKeyException e){
            System.out.println("UnrecoverableKeyException:");
            System.out.println(e.getMessage());
        }
        catch(UnrecoverableEntryException e){
            System.out.println("UnrecoverableEntryException:");
            System.out.println(e.getMessage());
        }
    } 
}
4

2 回答 2

1

您存储的password条目存储为 aSecretKeyEntry并且可以使用对象的getEncoded()方法检索其值secretKey。

System.out.println(new String(ske.getSecretKey().getEncoded()));

于 2020-04-14T13:44:37.930 回答
1

经过一番挖掘和反复试验，事实证明您可以检索使用 keytool 存储的密码 例如，如果您使用以下命令存储密码

    > $ keytool -importpassword -alias my-alias -keystore my-keystore.jcek -storetype jceks

    > Enter keystore password:  keystorepassword 
    > Re-enter new password:keystorepassword 
    > Enter the password to be stored: thepassword
    > Re-enter password: thepassword 
    > Enter key password for <my-alias>
        (RETURN if same as keystore password): keypassword 
    > Re-enter new password: keypassword

要检索您存储的密码（即“密码”）：

InputStream is = new FileInputStream(new File("my-keystore.jceks"));
KeyStore ks = KeyStore.getInstance("JCEKS");
ks.load(is, "keystorepassword".toCharArray());
PasswordProtection pp = new PasswordProtection("keypassword".toCharArray());
SecretKeyEntry ske = (SecretKeyEntry) ks.getEntry("my-alias", pp);
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBEWITHMD5ANDDES");
PBEKeySpec keySpec = (PBEKeySpec) factory.getKeySpec(ske.getSecretKey(), PBEKeySpec.class);
String password = new String(keySpec.getPassword());
System.out.println(password);

输出：密码

请注意，当您存储字符串时，它默认为PBEWITHMD5ANDDES算法。因此，您需要下载javax-crypto.jar并将其与您的程序一起编译javac -cp javax-crypto.jar your-program.java

于 2020-04-17T21:55:16.627 回答