how to decrypt with lua-resty string token encrypted with openssl

ykotik · 2014-08-05T02:57:09+00:00

On Friday, August 1, 2014 11:31:38 PM UTC+3, agentzh wrote:Hello! On Fri, Aug 1, 2014 at 3:29 AM, ashish adhav wrote: > I am thinking of moving my webapp...

how to decrypt with lua-resty string token encrypted with openssl

ykotik

Hi guys,

key1 is hex of key2.

"sampletoken" is decrypted with openssl.

How to decrypt it with lua resty string ?

key1="77656c636f6d653177656c636f6d653112"

key2="welcome1welcome1"

echo "sampletoken" | openssl enc -nosalt -aes-128-ecb -a -K $key1

I tried this one - ecrypted_token = "avIc3u8Efb6cqdwn2VGntw==";

local aes_128_ecb_md5 = aes:new("welcome1welcome1",nil, aes.cipher(128,"ecb"))

newstr = ngx.decode_base64(ecrypted_token)

plain_token = aes_128_ecb_md5:decrypt(newstr)

Thanks,
Yuri

bpottier

Your hex string is actually different from your ascii string.

irb(main):003:0> "welcome1welcome1".unpack("H*")
=> ["77656c636f6d653177656c636f6d6531"]

77656c636f6d653177656c636f6d6531

77656c636f6d653177656c636f6d653112

You have 12 added to your hex string, which is an odd control char, so likely just a typo or error in copying.

Cheers,

Ben

-----Original Message-----
From: yk...@gmail.com
Sent: Monday, August 4, 2014 12:26pm
To: openresty-en@googlegroups.com
Subject: [openresty-en] how to decrypt with lua-resty string token encrypted with openssl