From ffc422e2f6d8806dee551491feaac71f54adf0d7 Mon Sep 17 00:00:00 2001 From: Kim Alvefur Date: Sun, 13 Jan 2019 13:59:26 +0100 Subject: util.hashes: Add PBKDF2-HMAC-SHA256 --- util-src/hashes.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'util-src/hashes.c') diff --git a/util-src/hashes.c b/util-src/hashes.c index 7e790e9f..4c48b26f 100644 --- a/util-src/hashes.c +++ b/util-src/hashes.c @@ -116,6 +116,23 @@ static int Lpbkdf2_sha1(lua_State *L) { return 1; } + +static int Lpbkdf2_sha256(lua_State *L) { + unsigned char out[SHA256_DIGEST_LENGTH]; + + size_t pass_len, salt_len; + const char *pass = luaL_checklstring(L, 1, &pass_len); + const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len); + const int iter = luaL_checkinteger(L, 3); + + if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha256(), SHA256_DIGEST_LENGTH, out) == 0) { + return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed"); + } + + lua_pushlstring(L, (char *)out, SHA_DIGEST_LENGTH); + return 1; +} + static const luaL_Reg Reg[] = { { "sha1", Lsha1 }, { "sha224", Lsha224 }, @@ -129,6 +146,7 @@ static const luaL_Reg Reg[] = { { "hmac_md5", Lhmac_md5 }, { "scram_Hi_sha1", Lpbkdf2_sha1 }, /* COMPAT */ { "pbkdf2_hmac_sha1", Lpbkdf2_sha1 }, + { "pbkdf2_hmac_sha256", Lpbkdf2_sha256 }, { NULL, NULL } }; -- cgit v1.2.3