[GitHub] [apisix] tzssangglass commented on a diff in pull request #7925: feat: support ssl key-encrypt-salt rotation

[GitBox <gi...@apache.org>]

tzssangglass commented on code in PR #7925:
URL: https://github.com/apache/apisix/pull/7925#discussion_r973850799


##########
apisix/ssl.lua:
##########
@@ -55,23 +56,32 @@ function _M.server_name()
 end
 
 
-local _aes_128_cbc_with_iv = false
+local _aes_128_cbc_with_iv_tbl = false
 local function get_aes_128_cbc_with_iv()
-    if _aes_128_cbc_with_iv == false then
+    if _aes_128_cbc_with_iv_tbl == false then
+        _aes_128_cbc_with_iv_tbl = core.table.new(2, 0)
         local local_conf = core.config.local_conf()
-        local iv = core.table.try_read_attr(local_conf, "apisix", "ssl", "key_encrypt_salt")
-        if type(iv) =="string" and #iv == 16 then
-            _aes_128_cbc_with_iv = assert(aes:new(iv, nil, aes.cipher(128, "cbc"), {iv = iv}))
-        else
-            _aes_128_cbc_with_iv = nil
+        local ivs = core.table.try_read_attr(local_conf, "apisix", "ssl", "key_encrypt_salt")
+        local type_ivs = type(ivs)
+
+        if type_ivs == "table" then
+            for _, iv in ipairs(ivs) do
+                local aes_with_iv = assert(aes:new(iv, nil, aes.cipher(128, "cbc"), {iv = iv}))
+                core.table.insert(_aes_128_cbc_with_iv_tbl, aes_with_iv)
+            end
+        elseif type_ivs == "string" then
+            local aes_with_iv = assert(aes:new(ivs, nil, aes.cipher(128, "cbc"), {iv = ivs}))
+            core.table.insert(_aes_128_cbc_with_iv_tbl, aes_with_iv)

Review Comment:
   how about `type_ivs` is not `table` or `string`?



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