- if (ctx->digest != NULL) {
- OSSL_PARAM params[2];
- size_t i, sz, n = 0;
-
- switch (cmd) {
- case EVP_MD_CTRL_XOF_LEN:
- if (ctx->digest->set_params == NULL)
- break;
- i = (size_t)p1;
- params[n++] = OSSL_PARAM_construct_size_t(
- OSSL_DIGEST_PARAM_XOFLEN, &i, &sz);
- params[n++] = OSSL_PARAM_construct_end();
- return ctx->digest->set_params(ctx->provctx, params) > 0;
- case EVP_MD_CTRL_MICALG:
- if (ctx->digest->get_params == NULL)
- break;
- params[n++] = OSSL_PARAM_construct_utf8_string(
- OSSL_DIGEST_PARAM_MICALG, p2, p1 ? p1 : 9999,
- &sz);
- params[n++] = OSSL_PARAM_construct_end();
- return ctx->digest->get_params(ctx->provctx, params);
- }
- /* legacy code */
- if (ctx->digest->md_ctrl != NULL) {
- int ret = ctx->digest->md_ctrl(ctx, cmd, p1, p2);
- if (ret <= 0)
- return 0;
- return 1;
+ int ret = EVP_CTRL_RET_UNSUPPORTED;
+ int set_params = 1;
+ size_t sz;
+ OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
+
+ if (ctx == NULL || ctx->digest == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL);
+ return 0;
+ }
+
+ if (ctx->digest->prov == NULL)
+ goto legacy;
+
+ switch (cmd) {
+ case EVP_MD_CTRL_XOF_LEN:
+ sz = (size_t)p1;
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &sz);
+ break;
+ case EVP_MD_CTRL_MICALG:
+ set_params = 0;
+ params[0] = OSSL_PARAM_construct_utf8_string(OSSL_DIGEST_PARAM_MICALG,
+ p2, p1 ? p1 : 9999);
+ break;
+ default:
+ return EVP_CTRL_RET_UNSUPPORTED;
+ }
+
+ if (set_params)
+ ret = evp_do_md_ctx_setparams(ctx->digest, ctx->provctx, params);
+ else
+ ret = evp_do_md_ctx_getparams(ctx->digest, ctx->provctx, params);
+ return ret;
+
+
+/* TODO(3.0): Remove legacy code below */
+ legacy:
+ if (ctx->digest->md_ctrl == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED);
+ return 0;
+ }
+
+ ret = ctx->digest->md_ctrl(ctx, cmd, p1, p2);
+ if (ret <= 0)
+ return 0;
+ return ret;
+}
+
+EVP_MD *evp_md_new(void)
+{
+ EVP_MD *md = OPENSSL_zalloc(sizeof(*md));
+
+ if (md != NULL) {
+ md->lock = CRYPTO_THREAD_lock_new();
+ if (md->lock == NULL) {
+ OPENSSL_free(md);
+ return NULL;