I am trying to test the API from ankoder.com and have problem on the digest calculation for the authentication token . The sample is ruby while I am trying to call from C#. When I compare the digest result between in HMAC-SHA1, I got issues with the passkey result.
To make it easy to test here is the code:
require 'hmac-sha1'
require 'digest/sha1'
require 'base64'
token="-Sat, 14 Nov 2009 09:47:53 GMT-GET-/video.xml-"
private_key="whatever"
salt=Digest::SHA1.hexdigest(token)[0..19]
passkey=Base64.encode64(HMAC::SHA1.digest(private_key, salt)).strip
Which gives me the result: "X/0EngsTYf7L8e7LvoihTMLetlM=\n" If I try this in C# with the following:
const string PrivateKey = "whatever";
var date = "Sat, 14 Nov 2009 09:47:53 GMT";//DateTime.Now.ToUniversalTime().ToString("ddd, dd MMM yyyy HH:mm:ss") + " GMT";
string token=string.Format("-{0}-GET-/video.xml-", date);
var salt_binary=SHA1.Create().ComputeHash(Encoding.ASCII.GetBytes(token));
var salt_hex=BitConverter.ToString(salt_binary).Replace("-", "").ToLower();
var salt =salt_hex.Substring(0,20);
var hmac_sha1 =
new HMACSHA1(Encoding.ASCII.GetBytes(salt));
hmac_sha1.Initialize();
var private_key_binary = Encoding.ASCII.GetBytes(PrivateKey);
var passkey_binary = hmac_sha1.ComputeHash(private_key_binary,0,private_key_binary.Length);
var passkey = Convert.ToBase64String(passkey_binary).Trim();
The salt result is the same, but the passkey result is different- C# gives me :
QLC68XjQlEBurwbVwr7euUfHW/k=
Both generates the salt: f5cab5092f9271d43d2e
Any good idea what has happened?