HMAC_MD5.cpp

For Rasberry pi
Updated: spaniakos 2015

This is an example of how to use HMAC of this MD5 library.
The text and keys can be either in HEX or String format.
The examples are from the RFC2202 Test Vectors

#include <MD5.h>

MD5 hashMD5;
int main(int argc, char** argv) 
{
  double ms;
  printf("*********************\n");
  printf("**HMAC MD5 examples**\n");
  printf("*********************\n");

  char key[] = {0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b, 0x00};
  int key_len;
  key_len = strlen(key);
  char *text = "Hi There";
  int text_len;
  text_len = strlen(text);
  ms = hashMD5.millis();
  char *md5str = hashMD5.hmac_md5(text, text_len, key, key_len);
  //generate the digest (hex encoding) of our hash
  ms = hashMD5.millis() - ms;
  printf("done. (%f millis)\n",ms);
  printf("PLAIN   :Hi There\n");
  printf("KEY     :0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b\n");
  printf("EXPECTED:9294727a3638bb1c13f48ef8158bfc9d\n");
  printf("RESULT  :%s\n\n",md5str);
  
  char *key2 = "Jefe";
  key_len = strlen(key2);
  char *text2 = "what do ya want for nothing?";
  text_len = strlen(text2);
  ms = hashMD5.millis();
  md5str = hashMD5.hmac_md5(text2, text_len, key2, key_len);
  //generate the digest (hex encoding) of our hash
  ms = hashMD5.millis() - ms;
  printf("done. (%f millis)\n",ms);
  printf("PLAIN   :what do ya want for nothing?\n");
  printf("KEY     :Jefe\n");
  printf("EXPECTED:750c783e6ab0b503eaa86e310a5db738\n");
  printf("RESULT  :%s\n\n",md5str);
  
  char key3[] = {0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa, 0x00};
  key_len = strlen(key3);
  char text3[] = {0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                  0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                  0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                  0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                  0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd, 0x00
                 };
  text_len = strlen(text3);
  ms = hashMD5.millis();
  md5str = hashMD5.hmac_md5(text3, text_len, key3, key_len);
  ms = hashMD5.millis() - ms;
  printf("done. (%f millis)\n",ms);
  printf("PLAIN   :0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n");
  printf("KEY     :0xdd repeated 50 times\n");
  printf("EXPECTED:56be34521d144c88dbb8c733f0e8b3f6\n");
  printf("RESULT  :%s\n\n",md5str);
  
  char key4[] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,
                 0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,0x14,
                 0x15,0x16,0x17,0x18,0x19, 0x00};
  key_len = strlen(key4);
  char text4[] = {0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,
                  0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,
                  0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,
                  0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,
                  0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd,0xcd, 0x00
                 };
  text_len = strlen(text4);
  ms = hashMD5.millis();
  md5str = hashMD5.hmac_md5(text4, text_len, key4, key_len);
  ms = hashMD5.millis() - ms;
  printf("done. (%f millis)\n",ms);
  printf("PLAIN   :0x0102030405060708090a0b0c0d0e0f10111213141516171819\n");
  printf("KEY     :0xcd repeated 50 times\n");
  printf("EXPECTED:697eaf0aca3a3aea3a75164746ffaa79\n");
  printf("RESULT  :%s\n\n",md5str);
  
  char key5[] = {0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x00};
  key_len = strlen(key5);
  char *text5 = "Test With Truncation";
  text_len = strlen(text5);
  ms = hashMD5.millis();
  md5str = hashMD5.hmac_md5(text5, text_len, key5, key_len);
  ms = hashMD5.millis() - ms;
  printf("done. (%f millis)\n",ms);
  printf("PLAIN   :Test With Truncation\n");
  printf("KEY     :0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c\n");
  printf("EXPECTED:56461ef2342edc00f9bab995690efd4c\n");
  printf("RESULT  :%s\n\n",md5str);
  
  char key6[] = {0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0x00
                };
  key_len = strlen(key6);
  char *text6 = "Test Using Larger Than Block-Size Key - Hash Key First";
  text_len = strlen(text6);
  ms = hashMD5.millis();
  md5str = hashMD5.hmac_md5(text6, text_len, key6, key_len);
  ms = hashMD5.millis() - ms;
  printf("done. (%f millis)\n",ms);
  printf("PLAIN   :Test Using Larger Than Block-Size Key - Hash Key First\n");
  printf("KEY     :0xaa repeated 80 times\n");
  printf("EXPECTED:6b1ab7fe4bd7bf8f0b62e6ce61b9d0cd\n");
  printf("RESULT  :%s\n\n",md5str);
  
  char key7[] = {0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0x00
                };
  key_len = strlen(key7);
  char *text7 = "Test Using Larger Than Block-Size Key and Larger Than One Block-Size Data";
  text_len = strlen(text7);
  ms = hashMD5.millis();
  md5str = hashMD5.hmac_md5(text7, text_len, key7, key_len);
  ms = hashMD5.millis() - ms;
  printf("done. (%f millis)\n",ms);
  printf("PLAIN   :Test Using Larger Than Block-Size Key and Larger Than One Block-Size Data\n");
  printf("KEY     :0xaa repeated 80 times\n");
  printf("EXPECTED:6f630fad67cda0ee1fb1f562db3aa53e\n");
  printf("RESULT  :%s\n\n",md5str);
  return 0;
}