the WeChat Message Cryptography in the openresty lua verison.
extend the aes.lua with a set_padding method, discussing here
encrypt(text, timestamp, nonce)
decrypt(text_encrypted)
get_sha1({token, timestamp, nonce, text_encrypted})
# nginx.conf:
server {
location = /test {
content_by_lua_block {
local token = "pamtest"
local aesKey = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG"
local timestamp = "1409304348"
local nonce = "xxxxxx"
local appId = "wxb11529c136998cb6"
local sample = "<xml><ToUserName><![CDATA[oia2Tj我是中文jewbmiOUlr6X-1crbLOvLw]]></ToUserName><FromUserName><![CDATA[gh_7f083739789a]]></FromUserName><CreateTime>1407743423</CreateTime><MsgType><![CDATA[video]]></MsgType><Video><MediaId><![CDATA[eYJ1MbwPRJtOvIEabaxHs7TX2D-HV71s79GUxqdUkjm6Gs2Ed1KF3ulAOA9H1xG0]]></MediaId><Title><![CDATA[testCallBackReplyVideo]]></Title><Description><![CDATA[testCallBackReplyVideo]]></Description></Video></xml>"
local crypt = require "resty.crypt"
local wxmc = crypt:new(token, aesKey, appId)
local encrypted = wxmc:encrypt(sample, timestamp, nonce)
ngx.say("the sample encrypted: ", encrypted)
local gsub = ngx.re.gsub
sample = gsub(encrypted, [=[.*<Encrypt>(?:<!\[CDATA\[)?(.*?)(?:\]\]>)?</Encrypt>.*]=], "$1")
ngx.say("the sample decrypted: ", wxmc:decrypt(sample))
}
}
}