Commit 27ac306d authored by Nick Mathewson's avatar Nick Mathewson 🐘
Browse files

Add a unit test for the curve25519 keypair persistence functions

parent b1bdecd7

src/test/test_crypto.c

+55 −0
Changes for src/test/test_crypto.c: 55 added lines, 0 removed lines.
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include "or.h"

#include "test.h"

#include "aes.h"

#include "util.h"

#ifdef CURVE25519_ENABLED

#include "crypto_curve25519.h"

#endif
@@ -1005,6 +1006,59 @@ test_crypto_curve25519_wrappers(void *arg) 
 done:

  ;

}



static void

test_crypto_curve25519_persist(void *arg)

{

  curve25519_keypair_t keypair, keypair2;

  char *fname = tor_strdup(get_fname("curve25519_keypair"));

  char *tag = NULL;

  char *content = NULL;

  const char *cp;

  struct stat st;



  (void)arg;



  tt_int_op(0,==,curve25519_keypair_generate(&keypair, 0));



  tt_int_op(0,==,curve25519_keypair_write_to_file(&keypair, fname, "testing"));

  tt_int_op(0,==,curve25519_keypair_read_from_file(&keypair2, &tag, fname));

  tt_str_op(tag,==,"testing");



  test_memeq(keypair.pubkey.public_key,

             keypair2.pubkey.public_key,

             CURVE25519_PUBKEY_LEN);

  test_memeq(keypair.seckey.secret_key,

             keypair2.seckey.secret_key,

             CURVE25519_SECKEY_LEN);



  content = read_file_to_str(fname, RFTS_BIN, &st);

  tt_assert(content);

  tt_assert(!strcmpstart(content, "== c25519v1: testing =="));

  cp = content + strlen("== c25519v1: testing ==");

  tt_int_op(st.st_size, ==, 64 + strlen("== c25519v1: testing =="));

  test_memeq(keypair.seckey.secret_key,

             cp,

             CURVE25519_SECKEY_LEN);

  cp += CURVE25519_SECKEY_LEN;

  test_memeq(keypair.pubkey.public_key,

             cp,

             CURVE25519_SECKEY_LEN);



  tor_free(fname);

  fname = tor_strdup(get_fname("bogus_keypair"));



  tt_int_op(-1, ==, curve25519_keypair_read_from_file(&keypair2, &tag, fname));



  content[64] ^= 0xff;

  tt_int_op(0, ==, write_bytes_to_file(fname, content, st.st_size, 1));

  tt_int_op(-1, ==, curve25519_keypair_read_from_file(&keypair2, &tag, fname));



 done:

  tor_free(fname);

  tor_free(content);

}



#endif



static void *
@@ -1043,6 +1097,7 @@ struct testcase_t crypto_tests[] = { 
#ifdef CURVE25519_ENABLED

  { "curve25519_impl", test_crypto_curve25519_impl, 0, NULL, NULL },

  { "curve25519_wrappers", test_crypto_curve25519_wrappers, 0, NULL, NULL },

  { "curve25519_persist", test_crypto_curve25519_persist, 0, NULL, NULL },

#endif

  END_OF_TESTCASES

};