From ff30d91a0d32a4747b50f5bbd1ec5b2076073ec7 Mon Sep 17 00:00:00 2001 From: Kim Alvefur Date: Thu, 18 Sep 2014 10:16:59 +0200 Subject: util.random: Switch to SHA512 --- util/random.lua | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'util') diff --git a/util/random.lua b/util/random.lua index ed5cdf4b..328bdb00 100644 --- a/util/random.lua +++ b/util/random.lua @@ -10,7 +10,7 @@ local tostring = tostring; local os_time = os.time; local os_clock = os.clock; local ceil = math.ceil; -local sha1 = require "util.hashes".sha1; +local H = require "util.hashes".sha512; local last_uniq_time = 0; local function uniq_time() @@ -21,7 +21,7 @@ local function uniq_time() end local function new_random(x) - return sha1(x..os_clock()..tostring({})); + return H(x..os_clock()..tostring({})); end local buffer = new_random(uniq_time()); -- cgit v1.2.3 From ea8046b81b086c914d70faea3f2d208e6030fe37 Mon Sep 17 00:00:00 2001 From: Kim Alvefur Date: Thu, 18 Sep 2014 10:21:38 +0200 Subject: util.random: Ensure at least 4 bytes of previous random state is used when generating new randomness --- util/random.lua | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'util') diff --git a/util/random.lua b/util/random.lua index 328bdb00..5938a94f 100644 --- a/util/random.lua +++ b/util/random.lua @@ -31,8 +31,8 @@ local function seed(x) end local function bytes(n) - if #buffer < n then seed(uniq_time()); end - local r = buffer:sub(0, n); + if #buffer < n+4 then seed(uniq_time()); end + local r = buffer:sub(1, n); buffer = buffer:sub(n+1); return r; end -- cgit v1.2.3