remote_libssh/aes/main.c

#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <ctype.h>
#include "aes.h"

#define AES_ENC_MAX_LEN 8192

uint8_t *key;

void from_hex(char *s, int l, char *d)
{
    while (l--) {
        *(d++) = ((*s > '9' ? (*(s++) + 9) : *(s++)) << 4)
            | ((*s > '9' ? (*(s++) + 9) : *(s++)) & 0x0F);
    }
}

void StringToByte(char *source, unsigned char *dest, int sourceLen)
{

    int i;
    unsigned char highByte, lowByte;

    for (i = 0; i < sourceLen; i += 2) {
        highByte = toupper(source[i]); //转换为大写
        lowByte = toupper(source[i + 1]);

        if (highByte > 0x39)
            highByte -= 0x37;
        else
            highByte -= 0x30;

        if (lowByte > 0x39)
            lowByte -= 0x37;
        else
            lowByte -= 0x30;

        dest[i / 2] = (highByte << 4) | lowByte;
    }
    return;
}

int array_len(char *str)
{
    int i = 0;

    int Len = strlen(str);
    unsigned char out[AES_ENC_MAX_LEN] = { 0 };

    StringToByte(str, out, Len);
    for (i = 0; i < Len / 2; i++) {
        ;
        //printf("%02X ", out[i]);
    }
    //printf("%d\n", i);

    return i;
}

int main(int argc, char *argv[])
{
    key = (uint8_t *)malloc(128);
    strcpy(key, "1234567890ABCDEF");
    char string[AES_ENC_MAX_LEN];

    int opt;
    char optstrs[] = ":e:d:k:h?";
    while (-1 != (opt = getopt(argc, argv, optstrs))) {
        switch (opt) {
        case 'k':
            strcpy(key, optarg);
            break;
        case 'e':
            {
                memset(string, 0, AES_ENC_MAX_LEN);
                memcpy(string, optarg, strlen(optarg));
                uint16_t i = 0;
                uint8_t out[AES_ENC_MAX_LEN];

                uint16_t length = strlen(string);

                while (length % 16) {
                    strcat(string, "\0");
                    length++;
                }

                //printf("加密数据:\n");
                EncryptDataToCipherTxt((uint8_t *) string, out, length);
                //printf("密文长度=%d\n", length);
                for (i = 0; i < length; i++) {
                    printf("%02X", out[i]);
                }
                printf("\n");
                ;
            }
            break;
        case 'd':
            {
                memset(string, 0x00, AES_ENC_MAX_LEN);

                uint8_t out[AES_ENC_MAX_LEN];
                memset(out, 0x00, AES_ENC_MAX_LEN);

                from_hex(optarg, array_len(optarg), (char *)out);
                //printf("%s\n", out);

                DecryptCipherTxtToData(out, (uint8_t *) string, array_len(optarg));
                //printf("解密报文长度=%d\n", array_len(optarg));
                printf("%s\n", string);
            }
            break;
        case ':':
            printf("\nMissing argument after: -%c\n", optopt);
        case 'h':
        case '?':

        default:
            ;
        }
    }
    free(key);
    return 0;
}