/*
gcc -o des-basic des-basic.c -lcrypto
*/
#include
#include
int
main(int argc,char **argv)
{
DES_cblock key;
/**//* DES_random_key(&key); */ /**//* generate a random key */
DES_string_to_key("pass", &key);
DES_key_schedule schedule;
DES_set_key_checked(&key,
&schedule);
const_DES_cblock input = "hehehe";
DES_cblock output;
printf("cleartext:%s ", input);
DES_ecb_encrypt(&input, &output, &schedule,
DES_ENCRYPT);
printf("Encrypted! ");
printf("ciphertext:");
int i;
for (i = 0; i <
sizeof(input); i++)
printf("%02x", output[i]);
printf(" ");
DES_ecb_encrypt(&output, &input,
&schedule, DES_DECRYPT);
printf("Decrypted! ");
printf("cleartext:%s ", input);
return 0;
}
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