+ /*
+ * Test getting MD parameters via an associated EVP_PKEY_CTX
+ */
+ mdctx = EVP_MD_CTX_new();
+ if (!TEST_ptr(mdctx)
+ || !TEST_true(EVP_DigestSignInit_ex(mdctx, NULL, "SHA1", NULL,
+ pkey, dsaimpl)))
+ goto err;
+
+ /*
+ * We now have an EVP_MD_CTX with an EVP_PKEY_CTX inside it. We should be
+ * able to obtain the digest's settable parameters from the provider.
+ */
+ params = EVP_MD_CTX_settable_params(mdctx);
+ if (!TEST_ptr(params)
+ || !TEST_int_eq(strcmp(params[0].key, OSSL_DIGEST_PARAM_SSL3_MS), 0)
+ /* The final key should be NULL */
+ || !TEST_ptr_null(params[1].key))
+ goto err;
+
+ param = ourparams;
+ memset(ssl3ms, 0, sizeof(ssl3ms));
+ *param++ = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS,
+ ssl3ms, sizeof(ssl3ms));
+ *param++ = OSSL_PARAM_construct_end();
+
+ if (!TEST_true(EVP_MD_CTX_set_params(mdctx, ourparams)))
+ goto err;
+