XOR密码，替换密码和置换密码java编码？ [英] XOR cipher , Substitution cipher and permutation cipher java coding?
问题描述
请有人可以帮我组合XOR密码，替换密码和置换密码java编码吗？我已经做了编码，但得到了一些错误..任何人都可以帮我解决错误
import java。 util。*;
class question1 {
private final static String ALPHABET =abcdefghijklmnopqrstuvwxyz;
public static void main（String args []）
{
Scanner in = new Scanner（System。在）; //定义扫描仪输入
String messageString;
System.out.println（请输入明文：）;
messageString = in.nextLine（）; //读一行
String cipherText =;
int shft = 5;
for（int i = 0; i< messagestring .length（）; i ++）>
{
int charPosition = ALPHABET.indexOf（messageString.charAt（i））;
int keyVal =（shft + charPosition）％26;
char replaceVal = this.ALPHABET.charAt（keyVal）;
cipherText + = replaceVal;
}
int xor;
char temp;
for（int i = 0; i< messageString.length（）; i ++）{
xor = messageString.charAt（i）^ shft;
temp =（char）xor;
cipherText = cipherText + temp;
}
for（int i = 0; i< messagestring.length（）; i ++）>
{
cipherText = messageString.length（）^ [shft [i] -1];
}
}
}
Please anyone can help me the combine of XOR cipher , Substitution cipher and permutation cipher java coding? i already do to the coding but got some error..can anyone help me solve the error
import java. util.*;
class question1{
private final static String ALPHABET = "abcdefghijklmnopqrstuvwxyz";
public static void main (String args[])
{
Scanner in = new Scanner(System.in); //define scanner for input
String messageString;
System.out.println("Please enter the plaintext:");
messageString=in.nextLine(); //read a line
String cipherText ="";
int shft = 5;
for(int i=0;i<messagestring.length();i++)>
{
int charPosition = ALPHABET.indexOf(messageString.charAt(i));
int keyVal = (shft+charPosition)%26;
char replaceVal = this.ALPHABET.charAt(keyVal);
cipherText += replaceVal;
}
int xor;
char temp;
for(int i = 0 ; i < messageString.length() ; i++){
xor = messageString.charAt(i) ^ shft;
temp = (char)xor;
cipherText = cipherText+ temp;
}
for(int i=0;i<messagestring.length();i++)>
{
cipherText = messageString.length()^[shft[i] -1];
}
}
}
推荐答案
要合并（无论你的意思是什么），你必须先掌握它们的三种方法。这应该不难，毕竟那些是cassic，简单的。
然后你必须实现你的算法，所以需要熟悉java编程语言。
一旦您满足上述先决条件，就可以开始编码并随时在这里询问具体的问题。
To ''combine'' (whatever you mean with such a term) the three methods you have to first master them. That should not be difficult, after all those are ''cassic'', simple ones.
Then you have to implement your algorithm, so a good knowledge of the java programming language is required.
Once you have satisfied the above prerequisites, start coding and feel free to ask here specific questions.
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