Help Center/ Cloud Container Engine/ API Reference/ Appendix/ Adding a Salt in the password Field When Creating a Node

Updated on 2024-03-12 GMT+08:00

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Adding a Salt in the password Field When Creating a Node

When a node is created through the API, you need to add a salt to the password field to safeguard the password. The procedure is as follows:

The salt must be set based on the password complexity requirements:

A string of 8–26 characters.
Contains at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters !@$%^-_=+[{}]:,./?
Cannot contain the username or the username spelled backwards.
Cannot contain the username, the username spelled backwards, or more than two consecutive characters in the username (for Windows ECSs).

Python

To salt a password in the Python 3.7.7 environment, perform the following steps:

The python crypt package has compatibility issues in macOS. If the package cannot be executed, run it in Linux.

Add \ before $ in the salt. Generate a ciphertext password based on the updated salt.
```
python3 -c "import crypt;print(crypt.crypt('******', crypt.mksalt()))"
```

Encode the value of the password field using Base64.

echo -n '******' | base64 | tr "\n" " " | sed s/[[:space:]]//g

Java

To salt a password in the Java environment, perform the following steps:

Obtain a random number as the salt.

    private static String getCharAndNumr(int length) {
        String val = "";
        Random random = new SecureRandom();
        for (int i = 0; i < length; i++) {
            // Indicates whether to output letters or digits.
            String charOrNum = random.nextInt(2) % 2 == 0 ? "char" : "num";
            // Character string
            if ("char".equalsIgnoreCase(charOrNum)) {
                // Indicates whether an upper-case or lower-case letter is obtained.
                int choice = random.nextInt(2) % 2 == 0 ? 65 : 97;
                val += (char) (choice + random.nextInt(26));
            } else if ("num".equalsIgnoreCase(charOrNum)) {// Digit
                val += String.valueOf(random.nextInt(10));
            }
        }
        return val;
    }

Generate a salt.

    private static String generateSalt() {
        String salt;
        try {
            salt = "$6$" + getCharAndNumr(16);
        }catch (Exception e){
            salt = defaultSalt;
        }

        return salt;
    }

Generate a ciphertext password based on the salt.

    public static String getSaltPassword(String password) {
        if(StringUtils.isBlank(password)) {
            throw new BizException("password is empty");
        }

        String salt = generateSalt();

        Crypt crypt = new Crypt();
        return crypt.crypt(password, salt);
    }

Encode the value of the password field using Base64.

(Base64.getEncoder().encodeToString(AddSaltPasswordUtil.getSaltPassword(cceNodeCreateVo.getPassword()).getBytes()))

A complete example is as follows:

import java.util.Base64;
import java.util.Random;
import java.security.SecureRandom;

import org.apache.commons.codec.digest.Crypt;
import org.apache.commons.lang.StringUtils;

public class PassWord {
    
    static String defaultSalt = null;
    
    public static void main(String[] args) throws Exception {
        System.out.println(Base64.getEncoder().encodeToString(PassWord.getSaltPassword("Custom password").getBytes()));
    }   
    
    
	//Generate a ciphertext password based on the salt.
    public static String getSaltPassword(String password) throws Exception {
        if(StringUtils.isBlank(password)) {
            throw new Exception("password is empty");
        }
        String salt = generateSalt();
        return Crypt.crypt(password, salt);
    }
    
	//Generate a salt.
    private static String generateSalt() {
        String salt;
        try {
            salt = "$6$" + getCharAndNumr(16);
        }catch (Exception e){
            salt = defaultSalt;
        }
        return salt;
    }
    
	//Obtain a random number as the salt.
    private static String getCharAndNumr(int length) {
        String val = "";
        Random random = new SecureRandom();
        for (int i = 0; i < length; i++) {
            // Indicates whether to output letters or digits.
            String charOrNum = random.nextInt(2) % 2 == 0 ? "char" : "num";
            // Character string
            if ("char".equalsIgnoreCase(charOrNum)) {
                // Indicates whether an upper-case or lower-case letter is obtained.
                int choice = random.nextInt(2) % 2 == 0 ? 65 : 97;
                val += (char) (choice + random.nextInt(26));
            } else if ("num".equalsIgnoreCase(charOrNum)) {// Digit
                val += String.valueOf(random.nextInt(10));
            }
        }
        return val;
    }
}