我们需要创建一个方法,它接受原始文本和移位数作为参数,将文本中的每个字母按指定的位数进行替换。 publicclassCaesarCipher{// 加密方法publicstaticStringencrypt(Stringtext,intshift){StringBuilderresult=newStringBuilder();// 遍历每一个字符for(charc:text.toCharArray()){// 处理大写字母if(Character.isUpperCase(c...
int DECODE(char* ciphertext, int key){ assert(ciphertext != NULL); int sz = 0; for(sz=0;ciphertext[sz]!='\0';sz++); int i = 0; for(i = 0 ; i < sz ; i++) { if(ciphertext[i] >= 'A' && ciphertext[i] <= 'Z') { ciphertext[i] = ((ciphertext[i]-'A')-key...
长度必须为8个字节(字符) byte[] secretKeyBytes = "12345678".getBytes(); //secretKeyBytes = generateSecretKey("DES", 56); // Cipher:获取密码对象,参数按"算法/模式/填充模式" Cipher cipher = Cipher.getInstance
publicclassCaesarCipher{ publicstaticvoidmain(String[] args){ //需要转换的字符串 Stringstr="R uxen hxd."; for(inti=0;i<26;i++){ System.out.println(i+" "+caesarSwitch(str,i)); } } /** * 凯撒转换 *@paramstr 需要转换的字符串 *@paramstep 偏移量 *@return转换后的字符串 */ publi...
定义一个Caesar密码类,成员变量只有密钥,也就是偏移量key 代码如下: publicclassCaesarCrypto {privateintkey;publicCaesarCrypto(intkey) {//TODO Auto-generated constructor stubthis.key =key; }publicString getCipher(String plain) {char[] cipherChars =plain.toCharArray();for(inti = 0; i < cipherChars...
稍微修改一下代码,它就会变成: if (std::islower(ch1)) ch1 = 'a' + (ch1 - 'a' + 3) % 26;if (std::islower(ch2)) ch2 = 'a' + (ch2 - 'a' + 3) % 26;if (std::islower(ch3)) ch3 = 'a' + (ch3 - 'a' + 3) % 26;cout << "Caesar Cipher: " << ch1 << ch2 <<...
The Caesar cipher is a technique in which an encryption algorithm is used to change some text for gaining integrity, confidentiality, or security of a message. In cryptography there are many algorithms that are used to achieve the same, but Caesar cipher is the earliest and easiest algorithm us...
Code Blame 131 lines (105 loc) · 3.69 KB Raw package ciphers; import java.util.Scanner; /** * * A Java implementation of Caesar Cipher. /It is a type of substitution cipher * in which each letter in the plaintext is replaced by a letter some fixed * number of positions down the ...
10:简单密码 总时间限制: 1000ms 内存限制: 65536kB描述 Julius Caesar曾经使用过一种很简单的密码。
这个练习给出了一个具有三个参数(三角形的边长)和一个输出(使用海伦公式计算三角形的面积)的函数的例子。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1publicclassHeronsFormula2{3publicstaticvoidmain(String[]args)4{5double a;67a=triangleArea(3,3,3);8System.out.println("A triangle with side...