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set MGF1 digest correctly

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Fixes #19290

update rsa_set_ctx_params() so that the digest function used in the
MGF1 construction is set correctly.  Add a test for this to
evp_extra_test.c based on the code scaro-axway provided in #19290.

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19342)
This commit is contained in:
James Muir 2022-10-04 10:48:43 -04:00 committed by Tomas Mraz
parent 8377f26c2e
commit e5a7536eae
2 changed files with 61 additions and 3 deletions
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8
providers/implementations/asymciphers/rsa_enc.c
View File

@ -421,7 +421,7 @@ static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[])
const OSSL_PARAM *p;
char mdname[OSSL_MAX_NAME_SIZE];
char mdprops[OSSL_MAX_PROPQUERY_SIZE] = { '\0' };
char *str = mdname;
char *str = NULL;
if (prsactx == NULL)
return 0;
@ -430,13 +430,14 @@ static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[])
p = OSSL_PARAM_locate_const(params, OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST);
if (p != NULL) {
str = mdname;
if (!OSSL_PARAM_get_utf8_string(p, &str, sizeof(mdname)))
return 0;
str = mdprops;
p = OSSL_PARAM_locate_const(params,
OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST_PROPS);
if (p != NULL) {
str = mdprops;
if (!OSSL_PARAM_get_utf8_string(p, &str, sizeof(mdprops)))
return 0;
}
@ -492,13 +493,14 @@ static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[])
p = OSSL_PARAM_locate_const(params, OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST);
if (p != NULL) {
str = mdname;
if (!OSSL_PARAM_get_utf8_string(p, &str, sizeof(mdname)))
return 0;
str = mdprops;
p = OSSL_PARAM_locate_const(params,
OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST_PROPS);
if (p != NULL) {
str = mdprops;
if (!OSSL_PARAM_get_utf8_string(p, &str, sizeof(mdprops)))
return 0;
} else {

56
test/evp_extra_test.c
View File

@ -2752,6 +2752,61 @@ static int test_RSA_get_set_params(void)
return ret;
}
static int test_RSA_OAEP_set_get_params(void)
{
int ret = 0;
EVP_PKEY *key = NULL;
EVP_PKEY_CTX *key_ctx = NULL;
if (nullprov != NULL)
return TEST_skip("Test does not support a non-default library context");
if (!TEST_ptr(key = load_example_rsa_key())
|| !TEST_ptr(key_ctx = EVP_PKEY_CTX_new_from_pkey(0, key, 0)))
goto err;
{
int padding = RSA_PKCS1_OAEP_PADDING;
OSSL_PARAM params[4];
params[0] = OSSL_PARAM_construct_int(OSSL_SIGNATURE_PARAM_PAD_MODE, &padding);
params[1] = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST,
OSSL_DIGEST_NAME_SHA2_256, 0);
params[2] = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST,
OSSL_DIGEST_NAME_SHA1, 0);
params[3] = OSSL_PARAM_construct_end();
if (!TEST_int_gt(EVP_PKEY_encrypt_init_ex(key_ctx, params),0))
goto err;
}
{
OSSL_PARAM params[3];
char oaepmd[30] = { '\0' };
char mgf1md[30] = { '\0' };
params[0] = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST,
oaepmd, sizeof(oaepmd));
params[1] = OSSL_PARAM_construct_utf8_string(OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST,
mgf1md, sizeof(mgf1md));
params[2] = OSSL_PARAM_construct_end();
if (!TEST_true(EVP_PKEY_CTX_get_params(key_ctx, params)))
goto err;
if (!TEST_str_eq(oaepmd, OSSL_DIGEST_NAME_SHA2_256)
|| !TEST_str_eq(mgf1md, OSSL_DIGEST_NAME_SHA1))
goto err;
}
ret = 1;
err:
EVP_PKEY_free(key);
EVP_PKEY_CTX_free(key_ctx);
return ret;
}
#if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
static int test_decrypt_null_chunks(void)
{
@ -4666,6 +4721,7 @@ int setup_tests(void)
ADD_TEST(test_DSA_priv_pub);
#endif
ADD_TEST(test_RSA_get_set_params);
ADD_TEST(test_RSA_OAEP_set_get_params);
#if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
ADD_TEST(test_decrypt_null_chunks);
#endif