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view libtomcrypt/src/encauth/ccm/ccm_test.c @ 1653:76189c9ffea2

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External Public-Key Authentication API (#72) * Implemented dynamic loading of an external plug-in shared library to delegate public key authentication * Moved conditional compilation of the plugin infrastructure into the configure.ac script to be able to add -ldl to dropbear build only when the flag is enabled * Added tags file to the ignore list * Updated API to have the constructor to return function pointers in the pliugin instance. Added support for passing user name to the checkpubkey function. Added options to the session returned by the plugin and have dropbear to parse and process them * Added -rdynamic to the linker flags when EPKA is enabled * Changed the API to pass a previously created session to the checkPubKey function (created during preauth) * Added documentation to the API * Added parameter addrstring to plugin creation function * Modified the API to retrieve the auth options. Instead of having them as field of the EPKASession struct, they are stored internally (plugin-dependent) in the plugin/session and retrieved through a pointer to a function (in the session) * Changed option string to be a simple char * instead of unsigned char *
author fabriziobertocci <fabriziobertocci@gmail.com>
date Wed, 15 May 2019 09:43:57 -0400
parents 6dba84798cd5
children
line wrap: on
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#include "tomcrypt.h"

/**
  @file ccm_test.c
  CCM support, process a block of memory, Tom St Denis
*/

#ifdef LTC_CCM_MODE

int ccm_test(void)
{
#ifndef LTC_TEST
   return CRYPT_NOP;
#else
   static const struct {
       unsigned char key[16];
       unsigned char nonce[16];
       int           noncelen;
       unsigned char header[64];
       int           headerlen;
       unsigned char pt[64];
       int           ptlen;
       unsigned char ct[64];
       unsigned char tag[16];
       unsigned long taglen;
   } tests[] = {

/* 13 byte nonce, 8 byte auth, 23 byte pt */
{
   { 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
     0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF },
   { 0x00, 0x00, 0x00, 0x03, 0x02, 0x01, 0x00, 0xA0,
     0xA1, 0xA2, 0xA3, 0xA4, 0xA5 },
   13,
   { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 },
   8,
   { 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
     0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
     0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E },
   23,
   { 0x58, 0x8C, 0x97, 0x9A, 0x61, 0xC6, 0x63, 0xD2,
     0xF0, 0x66, 0xD0, 0xC2, 0xC0, 0xF9, 0x89, 0x80,
     0x6D, 0x5F, 0x6B, 0x61, 0xDA, 0xC3, 0x84 },
   { 0x17, 0xe8, 0xd1, 0x2c, 0xfd, 0xf9, 0x26, 0xe0 },
   8
},

/* 13 byte nonce, 12 byte header, 19 byte pt */
{
   { 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
     0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF },
   { 0x00, 0x00, 0x00, 0x06, 0x05, 0x04, 0x03, 0xA0,
     0xA1, 0xA2, 0xA3, 0xA4, 0xA5 },
   13,
   { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
     0x08, 0x09, 0x0A, 0x0B },
   12,
   { 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
     0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B,
     0x1C, 0x1D, 0x1E },
   19,
   { 0xA2, 0x8C, 0x68, 0x65, 0x93, 0x9A, 0x9A, 0x79,
     0xFA, 0xAA, 0x5C, 0x4C, 0x2A, 0x9D, 0x4A, 0x91,
     0xCD, 0xAC, 0x8C },
   { 0x96, 0xC8, 0x61, 0xB9, 0xC9, 0xE6, 0x1E, 0xF1 },
   8
},

/* supplied by Brian Gladman */
{
   { 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
     0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f },
   { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16  },
   7,
   { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 },
   8,
   { 0x20, 0x21, 0x22, 0x23 },
   4,
   { 0x71, 0x62, 0x01, 0x5b },
   { 0x4d, 0xac, 0x25, 0x5d },
   4
},

{
   { 0xc9, 0x7c, 0x1f, 0x67, 0xce, 0x37, 0x11, 0x85,
     0x51, 0x4a, 0x8a, 0x19, 0xf2, 0xbd, 0xd5, 0x2f },
   { 0x00, 0x50, 0x30, 0xf1, 0x84, 0x44, 0x08, 0xb5,
     0x03, 0x97, 0x76, 0xe7, 0x0c },
   13,
   { 0x08, 0x40, 0x0f, 0xd2, 0xe1, 0x28, 0xa5, 0x7c,
     0x50, 0x30, 0xf1, 0x84, 0x44, 0x08, 0xab, 0xae,
     0xa5, 0xb8, 0xfc, 0xba, 0x00, 0x00 },
   22,
   { 0xf8, 0xba, 0x1a, 0x55, 0xd0, 0x2f, 0x85, 0xae,
     0x96, 0x7b, 0xb6, 0x2f, 0xb6, 0xcd, 0xa8, 0xeb,
     0x7e, 0x78, 0xa0, 0x50 },
   20,
   { 0xf3, 0xd0, 0xa2, 0xfe, 0x9a, 0x3d, 0xbf, 0x23,
     0x42, 0xa6, 0x43, 0xe4, 0x32, 0x46, 0xe8, 0x0c,
     0x3c, 0x04, 0xd0, 0x19 },
   { 0x78, 0x45, 0xce, 0x0b, 0x16, 0xf9, 0x76, 0x23 },
   8
},

};
  unsigned long taglen, x, y;
  unsigned char buf[64], buf2[64], tag[16], tag2[16], tag3[16], zero[64];
  int           err, idx;
  symmetric_key skey;
  ccm_state ccm;

  zeromem(zero, 64);

  idx = find_cipher("aes");
  if (idx == -1) {
     idx = find_cipher("rijndael");
     if (idx == -1) {
        return CRYPT_NOP;
     }
  }

  for (x = 0; x < (sizeof(tests)/sizeof(tests[0])); x++) {
    for (y = 0; y < 2; y++) {
      taglen = tests[x].taglen;
      if (y == 0) {
         if ((err = cipher_descriptor[idx].setup(tests[x].key, 16, 0, &skey)) != CRYPT_OK) {
            return err;
         }

         if ((err = ccm_memory(idx,
                               tests[x].key, 16,
                               &skey,
                               tests[x].nonce, tests[x].noncelen,
                               tests[x].header, tests[x].headerlen,
                               (unsigned char*)tests[x].pt, tests[x].ptlen,
                               buf,
                               tag, &taglen, 0)) != CRYPT_OK) {
            return err;
         }
         /* run a second time to make sure skey is not touched */
         if ((err = ccm_memory(idx,
                               tests[x].key, 16,
                               &skey,
                               tests[x].nonce, tests[x].noncelen,
                               tests[x].header, tests[x].headerlen,
                               (unsigned char*)tests[x].pt, tests[x].ptlen,
                               buf,
                               tag, &taglen, 0)) != CRYPT_OK) {
            return err;
         }
      } else {
         if ((err = ccm_init(&ccm, idx, tests[x].key, 16, tests[x].ptlen, tests[x].taglen, tests[x].headerlen)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_add_nonce(&ccm, tests[x].nonce, tests[x].noncelen)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_add_aad(&ccm, tests[x].header, tests[x].headerlen)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_process(&ccm, (unsigned char*)tests[x].pt, tests[x].ptlen, buf, CCM_ENCRYPT)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_done(&ccm, tag, &taglen)) != CRYPT_OK) {
            return err;
         }
      }

      if (compare_testvector(buf, tests[x].ptlen, tests[x].ct, tests[x].ptlen, "CCM encrypt data", x)) {
         return CRYPT_FAIL_TESTVECTOR;
      }
      if (compare_testvector(tag, taglen, tests[x].tag, tests[x].taglen, "CCM encrypt tag", x)) {
         return CRYPT_FAIL_TESTVECTOR;
      }

      if (y == 0) {
         XMEMCPY(tag3, tests[x].tag, tests[x].taglen);
         taglen = tests[x].taglen;
         if ((err = ccm_memory(idx,
                               tests[x].key, 16,
                               NULL,
                               tests[x].nonce, tests[x].noncelen,
                               tests[x].header, tests[x].headerlen,
                               buf2, tests[x].ptlen,
                               buf,
                               tag3, &taglen, 1   )) != CRYPT_OK) {
            return err;
         }
      } else {
         if ((err = ccm_init(&ccm, idx, tests[x].key, 16, tests[x].ptlen, tests[x].taglen, tests[x].headerlen)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_add_nonce(&ccm, tests[x].nonce, tests[x].noncelen)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_add_aad(&ccm, tests[x].header, tests[x].headerlen)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_process(&ccm, buf2, tests[x].ptlen, buf, CCM_DECRYPT)) != CRYPT_OK) {
            return err;
         }
         if ((err = ccm_done(&ccm, tag2, &taglen)) != CRYPT_OK) {
            return err;
         }
      }


      if (compare_testvector(buf2, tests[x].ptlen, tests[x].pt, tests[x].ptlen, "CCM decrypt data", x)) {
         return CRYPT_FAIL_TESTVECTOR;
      }
      if (y == 0) {
        /* check if decryption with the wrong tag does not reveal the plaintext */
        XMEMCPY(tag3, tests[x].tag, tests[x].taglen);
        tag3[0] ^= 0xff; /* set the tag to the wrong value */
        taglen = tests[x].taglen;
        if ((err = ccm_memory(idx,
                              tests[x].key, 16,
                              NULL,
                              tests[x].nonce, tests[x].noncelen,
                              tests[x].header, tests[x].headerlen,
                              buf2, tests[x].ptlen,
                              buf,
                              tag3, &taglen, 1   )) != CRYPT_ERROR) {
          return CRYPT_FAIL_TESTVECTOR;
        }
        if (compare_testvector(buf2, tests[x].ptlen, zero, tests[x].ptlen, "CCM decrypt wrong tag", x)) {
           return CRYPT_FAIL_TESTVECTOR;
        }
      } else {
        if (compare_testvector(tag2, taglen, tests[x].tag, tests[x].taglen, "CCM decrypt tag", x)) {
           return CRYPT_FAIL_TESTVECTOR;
        }
      }

      if (y == 0) {
         cipher_descriptor[idx].done(&skey);
      }
    }
  }

  return CRYPT_OK;
#endif
}

#endif

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