85     EVP_MD_CTX *mdctx;  member
198     EVP_MD_CTX_free(ctx->mdctx);  in free_md()
200     ctx->mdctx = NULL;  in free_md()
216     if (ctx->mdctx == NULL) {  in sm2sig_digest_signverify_init()
217         ctx->mdctx = EVP_MD_CTX_new();  in sm2sig_digest_signverify_init()
218         if (ctx->mdctx == NULL)  in sm2sig_digest_signverify_init()
240     if (!EVP_DigestInit_ex2(ctx->mdctx, ctx->md, params))  in sm2sig_digest_signverify_init()
264             || !EVP_DigestUpdate(ctx->mdctx, z, ctx->mdsize))  in sm2sig_compute_z_digest()
277     if (psm2ctx == NULL || psm2ctx->mdctx == NULL)  in sm2sig_digest_signverify_update()
281         && EVP_DigestUpdate(psm2ctx->mdctx, data, datalen);  in sm2sig_digest_signverify_update()
291     if (psm2ctx == NULL || psm2ctx->mdctx == NULL)  in sm2sig_digest_sign_final()
300               && EVP_DigestFinal_ex(psm2ctx->mdctx, digest, &dlen)))  in sm2sig_digest_sign_final()
316         || psm2ctx->mdctx == NULL  in sm2sig_digest_verify_final()
321           && EVP_DigestFinal_ex(psm2ctx->mdctx, digest, &dlen)))  in sm2sig_digest_verify_final()
349     dstctx->mdctx = NULL;  in sm2sig_dupctx()
359     if (srcctx->mdctx != NULL) {  in sm2sig_dupctx()
360         dstctx->mdctx = EVP_MD_CTX_new();  in sm2sig_dupctx()
361         if (dstctx->mdctx == NULL  in sm2sig_dupctx()
362                 || !EVP_MD_CTX_copy_ex(dstctx->mdctx, srcctx->mdctx))  in sm2sig_dupctx()
493     if (psm2ctx->mdctx == NULL)  in sm2sig_get_ctx_md_params()
496     return EVP_MD_CTX_get_params(psm2ctx->mdctx, params);  in sm2sig_get_ctx_md_params()
513     if (psm2ctx->mdctx == NULL)  in sm2sig_set_ctx_md_params()
516     return EVP_MD_CTX_set_params(psm2ctx->mdctx, params);  in sm2sig_set_ctx_md_params()