local security = require("security")
local cipher = { 
    key = "\x17\xC6\x3C\x37\xDE\x19\xCF\x00\x6A\xC9\x15\x1A\x00\x3C\x78\x43", 
    mode = "cbc" 
} --binary key (size 16 bytes) and empty initialization vector
local decrypted_data = security.decrypt( cipher, "data for decryption" )