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/************************************************* *IDE:VS2017 *Author:Rise *Project:XOR 加密解密 **************************************************/ #include <stdio.h>/*********************** *cipherttext 密文 *plaintext 明文 *textlen 文本長度 *key 密鑰 ********************/void EN_XOR(unsigned char *ciphertext, unsigned char* Plaintext, unsigned char textlen, unsigned char key) {int i = 0;for (i = 0; i < textlen; i++){ciphertext[i] = Plaintext[i] ^ key;}}void DE_XOR(unsigned char *ciphertext, unsigned char* Plaintext, unsigned char textlen, unsigned char key) {int i = 0;for (i = 0; i < textlen; i++){Plaintext[i] = ciphertext[i] ^ key;} }void test() {int i = 0;unsigned char plaint[10] = { 0xaa,0x55,0x44,0x22,0xff,0xcc,0x88,0x99,0x56,0x65 };unsigned char ciphert[10];unsigned char key = 0xA5;EN_XOR(ciphert, plaint, 10, key);for (i = 0; i < 10; i++){printf("plaint[%d] 0x%02x\n", i, plaint[i]);}printf("\n");for (i = 0; i < 10; i++){printf("ciphert[%d] 0x%02x\n", i, ciphert[i]);}printf("\n");DE_XOR(ciphert, plaint, 10, key);for (i = 0; i < 10; i++){printf("plaint[%d] 0x%02x\n", i, plaint[i]);}printf("\n"); }int main() {test();return 0; }

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