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authorWerner Koch <wk@gnupg.org>2016-03-18 15:11:31 +0100
committerWerner Koch <wk@gnupg.org>2016-03-18 15:26:25 +0100
commite40939b2141306238cc30a340b867b60fa4dc2a3 (patch)
treedd967b203a66917decc4166e2be71d287692cd77
parent80e9f95e6f419daa765e4876c858e3e36e808897 (diff)
downloadlibgcrypt-e40939b2141306238cc30a340b867b60fa4dc2a3.tar.gz
dsa: Make regression tests work.
* cipher/dsa.c (sample_secret_key_1024): Comment out unused constant. (ogenerate_fips186): Make it work with use-fips183-2 flag. * cipher/primegen.c (_gcry_generate_fips186_3_prime): Use Emacs standard comment out format. * tests/fips186-dsa.c (check_dsa_gen_186_3): New dummy fucntion. (main): Call it. (main): Compare against current version. * tests/pubkey.c (get_dsa_key_fips186_new): Create 2048 bit key. (get_dsa_key_fips186_with_seed_new): Ditto. (get_dsa_key_fips186_with_domain_new): Comment out. (check_run): Do not call that function. -- Signed-off-by: Werner Koch <wk@gnupg.org>
-rw-r--r--cipher/dsa.c30
-rw-r--r--cipher/primegen.c45
-rw-r--r--tests/fips186-dsa.c11
-rw-r--r--tests/pubkey.c19
4 files changed, 60 insertions, 45 deletions
diff --git a/cipher/dsa.c b/cipher/dsa.c
index 37c1b180..909a8ca2 100644
--- a/cipher/dsa.c
+++ b/cipher/dsa.c
@@ -66,7 +66,9 @@ static const char *dsa_names[] =
};
-/* A sample 1024 bit DSA key used for the selftests. */
+/* A sample 1024 bit DSA key used for the selftests. Not anymore
+ * used, kept only for reference. */
+#if 0
static const char sample_secret_key_1024[] =
"(private-key"
" (dsa"
@@ -101,6 +103,7 @@ static const char sample_public_key_1024[] =
" A1816A724C34F87330FC9E187C5D66897A04535CC2AC9164A7150ABFA8179827"
" 6E45831AB811EEE848EBB24D9F5F2883B6E5DDC4C659DEF944DCFD80BF4D0A20"
" 42CAA7DC289F0C5A9D155F02D3D551DB741A81695B74D4C8F477F9C7838EB0FB#)))";
+#endif /*0*/
/* 2048 DSA key from RFC 6979 A.2.2 */
static const char sample_public_key_2048[] =
@@ -412,7 +415,9 @@ generate_fips186 (DSA_secret_key *sk, unsigned int nbits, unsigned int qbits,
/* Check that QBITS and NBITS match the standard. Note that FIPS
186-3 uses N for QBITS and L for NBITS. */
- if (nbits == 2048 && qbits == 224)
+ if (nbits == 1024 && qbits == 160 && use_fips186_2)
+ ; /* Allowed in FIPS 186-2 mode. */
+ else if (nbits == 2048 && qbits == 224)
;
else if (nbits == 2048 && qbits == 256)
;
@@ -442,27 +447,28 @@ generate_fips186 (DSA_secret_key *sk, unsigned int nbits, unsigned int qbits,
initial_seed.sexp = sexp_find_token (deriveparms, "seed", 0);
if (initial_seed.sexp)
initial_seed.seed = sexp_nth_data (initial_seed.sexp, 1,
- &initial_seed.seedlen);
+ &initial_seed.seedlen);
}
if (use_fips186_2)
ec = _gcry_generate_fips186_2_prime (nbits, qbits,
- initial_seed.seed,
- initial_seed.seedlen,
- &prime_q, &prime_p,
- r_counter,
- r_seed, r_seedlen);
+ initial_seed.seed,
+ initial_seed.seedlen,
+ &prime_q, &prime_p,
+ r_counter,
+ r_seed, r_seedlen);
else
ec = _gcry_generate_fips186_3_prime (nbits, qbits, NULL, 0,
- &prime_q, &prime_p,
- r_counter,
- r_seed, r_seedlen, NULL);
+ &prime_q, &prime_p,
+ r_counter,
+ r_seed, r_seedlen, NULL);
sexp_release (initial_seed.sexp);
if (ec)
goto leave;
/* Find a generator g (h and e are helpers).
- e = (p-1)/q */
+ * e = (p-1)/q
+ */
value_e = mpi_alloc_like (prime_p);
mpi_sub_ui (value_e, prime_p, 1);
mpi_fdiv_q (value_e, value_e, prime_q );
diff --git a/cipher/primegen.c b/cipher/primegen.c
index 9fd58d22..3ed432bf 100644
--- a/cipher/primegen.c
+++ b/cipher/primegen.c
@@ -1612,23 +1612,21 @@ _gcry_generate_fips186_2_prime (unsigned int pbits, unsigned int qbits,
-/* WARNING: The code below has not yet been tested! However, it is
- not yet used. We need to wait for FIPS 186-3 final and for test
- vectors.
-
- Generate the two prime used for DSA using the algorithm specified
- in FIPS 186-3, A.1.1.2. PBITS is the desired length of the prime P
- and a QBITS the length of the prime Q. If SEED is not supplied and
- SEEDLEN is 0 the function generates an appropriate SEED. On
- success the generated primes are stored at R_Q and R_P, the counter
- value is stored at R_COUNTER and the seed actually used for
- generation is stored at R_SEED and R_SEEDVALUE. The hash algorithm
- used is stored at R_HASHALGO.
-
- Note that this function is very similar to the fips186_2 code. Due
- to the minor differences, other buffer sizes and for documentarion,
- we use a separate function.
-*/
+/* WARNING: The code below has not yet been tested!
+ *
+ * Generate the two prime used for DSA using the algorithm specified
+ * in FIPS 186-3, A.1.1.2. PBITS is the desired length of the prime P
+ * and a QBITS the length of the prime Q. If SEED is not supplied and
+ * SEEDLEN is 0 the function generates an appropriate SEED. On
+ * success the generated primes are stored at R_Q and R_P, the counter
+ * value is stored at R_COUNTER and the seed actually used for
+ * generation is stored at R_SEED and R_SEEDVALUE. The hash algorithm
+ * used is stored at R_HASHALGO.
+ *
+ * Note that this function is very similar to the fips186_2 code. Due
+ * to the minor differences, other buffer sizes and for documentarion,
+ * we use a separate function.
+ */
gpg_err_code_t
_gcry_generate_fips186_3_prime (unsigned int pbits, unsigned int qbits,
const void *seed, size_t seedlen,
@@ -1813,13 +1811,12 @@ _gcry_generate_fips186_3_prime (unsigned int pbits, unsigned int qbits,
}
/* Step 12: Save p, q, counter and seed. */
-/*
- log_debug ("fips186-3 pbits p=%u q=%u counter=%d\n",
- mpi_get_nbits (prime_p), mpi_get_nbits (prime_q), counter);
- log_printhex ("fips186-3 seed", seed, seedlen);
- log_printmpi ("fips186-3 p", prime_p);
- log_printmpi ("fips186-3 q", prime_q);
-*/
+ /* log_debug ("fips186-3 pbits p=%u q=%u counter=%d\n", */
+ /* mpi_get_nbits (prime_p), mpi_get_nbits (prime_q), counter); */
+ /* log_printhex ("fips186-3 seed", seed, seedlen); */
+ /* log_printmpi ("fips186-3 p", prime_p); */
+ /* log_printmpi ("fips186-3 q", prime_q); */
+
if (r_q)
{
*r_q = prime_q;
diff --git a/tests/fips186-dsa.c b/tests/fips186-dsa.c
index 10b18abb..5ee829ea 100644
--- a/tests/fips186-dsa.c
+++ b/tests/fips186-dsa.c
@@ -434,6 +434,14 @@ check_dsa_gen_186_2 (void)
}
+static void
+check_dsa_gen_186_3 (void)
+{
+ /* FIXME: Needs to be implemented. */
+ if (verbose)
+ info ("generating FIPS 186-3 test keys - skipped\n");
+}
+
int
main (int argc, char **argv)
@@ -449,7 +457,7 @@ main (int argc, char **argv)
}
gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
- if (!gcry_check_version ("1.4.4"))
+ if (!gcry_check_version (GCRYPT_VERSION))
die ("version mismatch\n");
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
if (debug)
@@ -459,6 +467,7 @@ main (int argc, char **argv)
check_dsa_gen_186_2 ();
+ check_dsa_gen_186_3 ();
return error_count ? 1 : 0;
diff --git a/tests/pubkey.c b/tests/pubkey.c
index ae5eea2d..26bd9e3a 100644
--- a/tests/pubkey.c
+++ b/tests/pubkey.c
@@ -490,7 +490,7 @@ get_dsa_key_fips186_new (gcry_sexp_t *pkey, gcry_sexp_t *skey)
int rc;
rc = gcry_sexp_new
- (&key_spec, "(genkey (dsa (nbits 4:1024)(use-fips186)))", 0, 1);
+ (&key_spec, "(genkey (dsa (nbits 4:2048)(use-fips186)))", 0, 1);
if (rc)
die ("error creating S-expression: %s\n", gcry_strerror (rc));
rc = gcry_pk_genkey (&key, key_spec);
@@ -557,6 +557,7 @@ get_dsa_key_with_domain_new (gcry_sexp_t *pkey, gcry_sexp_t *skey)
*skey = sec_key;
}
+#if 0
static void
get_dsa_key_fips186_with_domain_new (gcry_sexp_t *pkey, gcry_sexp_t *skey)
{
@@ -598,7 +599,7 @@ get_dsa_key_fips186_with_domain_new (gcry_sexp_t *pkey, gcry_sexp_t *skey)
*pkey = pub_key;
*skey = sec_key;
}
-
+#endif /*0*/
static void
get_dsa_key_fips186_with_seed_new (gcry_sexp_t *pkey, gcry_sexp_t *skey)
@@ -610,7 +611,7 @@ get_dsa_key_fips186_with_seed_new (gcry_sexp_t *pkey, gcry_sexp_t *skey)
(&key_spec,
"(genkey"
" (dsa"
- " (nbits 4:1024)"
+ " (nbits 4:2048)"
" (use-fips186)"
" (transient-key)"
" (derive-parms"
@@ -722,12 +723,14 @@ check_run (void)
gcry_sexp_release (pkey);
gcry_sexp_release (skey);
+ /* We need new test vectors for get_dsa_key_fips186_with_domain_new. */
if (verbose)
- fprintf (stderr, "Generating DSA key with given domain (FIPS 186).\n");
- get_dsa_key_fips186_with_domain_new (&pkey, &skey);
- /* Fixme: Add a check function for DSA keys. */
- gcry_sexp_release (pkey);
- gcry_sexp_release (skey);
+ fprintf (stderr, "Generating DSA key with given domain (FIPS 186)"
+ " - skipped.\n");
+ /* get_dsa_key_fips186_with_domain_new (&pkey, &skey); */
+ /* /\* Fixme: Add a check function for DSA keys. *\/ */
+ /* gcry_sexp_release (pkey); */
+ /* gcry_sexp_release (skey); */
if (verbose)
fprintf (stderr, "Generating DSA key with given seed (FIPS 186).\n");