https://github.com/gentoo/libressl/issues/581
https://github.com/openbsd/ports/commit/d34065ee251e858e620b2d5c6d4e4af926b13804#diff-9a7f97ecb58b66a9b0e20f0b427a653844409c229d66940e154a3845a90f7943
https://github.com/openbsd/ports/commit/d34065ee251e858e620b2d5c6d4e4af926b13804#diff-39e1b332d3557a0d3dfeed7fd3bb6cbd7ceea1eaf41959a0bd746ebd52dbc39e

LibreSSL doesn't provide OSSL_PARAM*

Index: util-src/crypto.c
--- a/util-src/crypto.c.orig
+++ b/util-src/crypto.c
@@ -27,9 +27,18 @@ typedef unsigned __int32 uint32_t;
 #include <openssl/err.h>
 #include <openssl/evp.h>
 #include <openssl/obj_mac.h>
-#include <openssl/param_build.h>
 #include <openssl/pem.h>
 
+#include <openssl/opensslv.h>
+#if OPENSSL_VERSION_NUMBER >= 0x30000000
+#define HAVE_OSSL_PARAM
+#endif
+
+#ifdef HAVE_OSSL_PARAM
+#include <openssl/param_build.h>
+#endif
+
+
 #if (LUA_VERSION_NUM == 501)
 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
 #endif
@@ -199,6 +208,7 @@ cleanup:
 }
 
 static int Lpkey_meth_public_raw(lua_State *L) {
+#ifdef HAVE_OSSL_PARAM
 	OSSL_PARAM *params;
 	EVP_PKEY *pkey = pkey_from_arg(L, 1, 0, 0);
 
@@ -218,6 +228,12 @@ static int Lpkey_meth_public_raw(lua_State *L) {
 	}
 
 	return 1;
+#else
+	EVP_PKEY *pkey = pkey_from_arg(L, 1, 0, 0);
+	lua_pushnil(L);
+
+	return 1;
+#endif
 }
 
 static int Lpkey_meth_public_pem(lua_State *L) {
@@ -334,6 +350,7 @@ static int Limport_private_pem(lua_State *L) {
 }
 
 static int Limport_public_ec_raw(lua_State *L) {
+#ifdef HAVE_OSSL_PARAM
 	OSSL_PARAM_BLD *param_bld = NULL;
 	OSSL_PARAM *params = NULL;
 	EVP_PKEY_CTX *ctx = NULL;
@@ -367,6 +384,15 @@ err:
 	if (param_bld) OSSL_PARAM_BLD_free(param_bld);
 	lua_pushnil(L);
 	return 1;
+#else
+	size_t pubkey_bytes;
+	const char* pubkey_data = luaL_checklstring(L, 1, &pubkey_bytes);
+	const char* curve = luaL_checkstring(L, 2);
+
+	lua_pushnil(L);
+
+	return 1;
+#endif
 }
 
 static int Limport_public_pem(lua_State *L) {
LibreSSL doesn't implement blake2.

Index: util-src/hashes.c
--- a/util-src/hashes.c.orig
+++ b/util-src/hashes.c
@@ -115,14 +115,6 @@ static int Lmd5(lua_State *L) {
 	return Levp_hash(L, EVP_md5());
 }
 
-static int Lblake2s256(lua_State *L) {
-	return Levp_hash(L, EVP_blake2s256());
-}
-
-static int Lblake2b512(lua_State *L) {
-	return Levp_hash(L, EVP_blake2b512());
-}
-
 static int Lsha3_256(lua_State *L) {
 	return Levp_hash(L, EVP_sha3_256());
 }
@@ -188,15 +180,7 @@ static int Lhmac_sha3_512(lua_State *L) {
 	return Levp_hmac(L, EVP_sha3_512());
 }
 
-static int Lhmac_blake2s256(lua_State *L) {
-	return Levp_hmac(L, EVP_blake2s256());
-}
 
-static int Lhmac_blake2b512(lua_State *L) {
-	return Levp_hmac(L, EVP_blake2b512());
-}
-
-
 static int Levp_pbkdf2(lua_State *L, const EVP_MD *evp, size_t out_len) {
 	unsigned char out[EVP_MAX_MD_SIZE];
 
@@ -292,8 +276,6 @@ static const luaL_Reg Reg[] = {
 	{ "md5",		Lmd5		},
 	{ "sha3_256",		Lsha3_256	},
 	{ "sha3_512",		Lsha3_512	},
-	{ "blake2s256",		Lblake2s256	},
-	{ "blake2b512",		Lblake2b512	},
 	{ "hmac_sha1",		Lhmac_sha1	},
 	{ "hmac_sha224",	Lhmac_sha224	},
 	{ "hmac_sha256",	Lhmac_sha256	},
@@ -302,8 +284,6 @@ static const luaL_Reg Reg[] = {
 	{ "hmac_md5",		Lhmac_md5	},
 	{ "hmac_sha3_256",	Lhmac_sha3_256	},
 	{ "hmac_sha3_512",	Lhmac_sha3_512	},
-	{ "hmac_blake2s256",	Lhmac_blake2s256	},
-	{ "hmac_blake2b512",	Lhmac_blake2b512	},
 	{ "scram_Hi_sha1",	Lpbkdf2_sha1	}, /* COMPAT */
 	{ "pbkdf2_hmac_sha1",	Lpbkdf2_sha1	},
 	{ "pbkdf2_hmac_sha256",	Lpbkdf2_sha256	},