encode-decode password in apps

[merel]

Docs: http://openrb.com/docs/lua.htm#encded-info

Thank you for your quick reply.

my task:
1. password must be encrypted by HW specific key (mac address)
2. aftter restore project on diferent HW, the password must not be visible. 
In my opinion I wish rsa function how to?

Thank you.

Code:

require('encdec')
password="1*1234"
key=io.readfile('/sys/class/net/eth0/address'):trim() -- or "/proc/device-tree/uniqid" or combination MAC and uniqid


-- encdec.md5(password)            -- get only hash md5
-- encdec.sha1(password)        -- get only hash sha1
-- encdec.crc16(password)        -- get crc
secret=encdec.base64enc(password)    -- ok but is not encription
pwd_decoded=encdec.base64dec(secret)    -- ok but is not encription



sha_secret=encdec.sha256(password)        -- undocumented ( create sha256 hash)
encoded_pwd=encdec.hmacsha256(password, key)    -- undocumented ( create signature with key), do you have any function to get data with key?