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Test usage of a custom EVP_CIPHER

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Test that a custom EVP_CIPHER gets used in EVP_CipherInit_ex() calls.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19300)
This commit is contained in:
Matt Caswell 2022-09-29 12:10:30 +01:00
parent f817a7439e
commit 8c7d847e2e
1 changed files with 85 additions and 2 deletions
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87
test/evp_extra_test.c
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@ -4290,7 +4290,7 @@ static int test_custom_md_meth(void)
* library context in this test.
*/
if (testctx != NULL)
return 1;
return TEST_skip("Non-default libctx");
custom_md_init_called = custom_md_cleanup_called = 0;
@ -4312,7 +4312,7 @@ static int test_custom_md_meth(void)
/*
* Initing our custom md and then initing another md should
* result in the init and cleanup functions of the custom md
* from being called.
* being called.
*/
|| !TEST_true(EVP_DigestInit_ex(mdctx, tmp, NULL))
|| !TEST_true(EVP_DigestInit_ex(mdctx, EVP_sha256(), NULL))
@ -4329,6 +4329,88 @@ static int test_custom_md_meth(void)
return testresult;
}
typedef struct {
int data;
} custom_ciph_ctx;
static int custom_ciph_init_called = 0;
static int custom_ciph_cleanup_called = 0;
static int custom_ciph_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
custom_ciph_ctx *p = EVP_CIPHER_CTX_get_cipher_data(ctx);
if (p == NULL)
return 0;
custom_ciph_init_called++;
return 1;
}
static int custom_ciph_cleanup(EVP_CIPHER_CTX *ctx)
{
custom_ciph_ctx *p = EVP_CIPHER_CTX_get_cipher_data(ctx);
if (p == NULL)
/* Nothing to do */
return 1;
custom_ciph_cleanup_called++;
return 1;
}
static int test_custom_ciph_meth(void)
{
EVP_CIPHER_CTX *ciphctx = NULL;
EVP_CIPHER *tmp = NULL;
int testresult = 0;
int nid;
/*
* We are testing deprecated functions. We don't support a non-default
* library context in this test.
*/
if (testctx != NULL)
return TEST_skip("Non-default libctx");
custom_ciph_init_called = custom_ciph_cleanup_called = 0;
nid = OBJ_create("1.3.6.1.4.1.16604.998866.2", "custom-ciph", "custom-ciph");
if (!TEST_int_ne(nid, NID_undef))
goto err;
tmp = EVP_CIPHER_meth_new(nid, 16, 16);
if (!TEST_ptr(tmp))
goto err;
if (!TEST_true(EVP_CIPHER_meth_set_init(tmp, custom_ciph_init))
|| !TEST_true(EVP_CIPHER_meth_set_flags(tmp, EVP_CIPH_ALWAYS_CALL_INIT))
|| !TEST_true(EVP_CIPHER_meth_set_cleanup(tmp, custom_ciph_cleanup))
|| !TEST_true(EVP_CIPHER_meth_set_impl_ctx_size(tmp,
sizeof(custom_ciph_ctx))))
goto err;
ciphctx = EVP_CIPHER_CTX_new();
if (!TEST_ptr(ciphctx)
/*
* Initing our custom cipher and then initing another cipher
* should result in the init and cleanup functions of the custom
* cipher being called.
*/
|| !TEST_true(EVP_CipherInit_ex(ciphctx, tmp, NULL, NULL, NULL, 1))
|| !TEST_true(EVP_CipherInit_ex(ciphctx, EVP_aes_128_cbc(), NULL,
NULL, NULL, 1))
|| !TEST_int_eq(custom_ciph_init_called, 1)
|| !TEST_int_eq(custom_ciph_cleanup_called, 1))
goto err;
testresult = 1;
err:
EVP_CIPHER_CTX_free(ciphctx);
EVP_CIPHER_meth_free(tmp);
return testresult;
}
# ifndef OPENSSL_NO_DYNAMIC_ENGINE
/* Test we can create a signature keys with an associated ENGINE */
static int test_signatures_with_engine(int tst)
@ -4627,6 +4709,7 @@ int setup_tests(void)
ADD_ALL_TESTS(test_custom_pmeth, 12);
ADD_TEST(test_evp_md_cipher_meth);
ADD_TEST(test_custom_md_meth);
ADD_TEST(test_custom_ciph_meth);
# ifndef OPENSSL_NO_DYNAMIC_ENGINE
/* Tests only support the default libctx */