diff options
Diffstat (limited to 'test/exptest.c')
-rw-r--r-- | test/exptest.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/exptest.c b/test/exptest.c index f6ff411ca1..9dadd4873f 100644 --- a/test/exptest.c +++ b/test/exptest.c @@ -50,6 +50,7 @@ static int test_mod_exp_zero(void) BN_ULONG one_word = 1; BN_CTX *ctx = BN_CTX_new(); int ret = 0, failed = 0; + BN_MONT_CTX *mont = NULL; if (!TEST_ptr(m = BN_new()) || !TEST_ptr(a = BN_new()) @@ -94,6 +95,33 @@ static int test_mod_exp_zero(void) if (!TEST_true(a_is_zero_mod_one("BN_mod_exp_mont_consttime", r, a))) failed = 1; + if (!TEST_ptr(mont = BN_MONT_CTX_new())) + goto err; + + ERR_set_mark(); + /* mont is not set but passed in */ + if (!TEST_false(BN_mod_exp_mont_consttime(r, p, a, m, ctx, mont))) + goto err; + if (!TEST_false(BN_mod_exp_mont(r, p, a, m, ctx, mont))) + goto err; + ERR_pop_to_mark(); + + if (!TEST_true(BN_MONT_CTX_set(mont, m, ctx))) + goto err; + + /* we compute 0 ** a mod 1 here, to execute code that uses mont */ + if (!TEST_true(BN_mod_exp_mont_consttime(r, p, a, m, ctx, mont))) + goto err; + + if (!TEST_true(a_is_zero_mod_one("BN_mod_exp_mont_consttime", r, a))) + failed = 1; + + if (!TEST_true(BN_mod_exp_mont(r, p, a, m, ctx, mont))) + goto err; + + if (!TEST_true(a_is_zero_mod_one("BN_mod_exp_mont", r, a))) + failed = 1; + /* * A different codepath exists for single word multiplication * in non-constant-time only. @@ -114,6 +142,7 @@ static int test_mod_exp_zero(void) BN_free(a); BN_free(p); BN_free(m); + BN_MONT_CTX_free(mont); BN_CTX_free(ctx); return ret; |