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1using System;
2using System.Collections.Generic;
3using System.Linq;
4using System.Text;
5using System.Threading.Tasks;
6using Jose;
7
8using System.Buffers.Text;
9using Newtonsoft.Json;
10using Newtonsoft.Json.Linq;
11using Jose.keys;
12using System.Security.Cryptography;
13using System.Xml.Serialization;
14using System.Web.Script.Serialization;
15using WorkBenchC.Models;
16
17namespace WorkBenchC.Tools
18{
19    class CyberSourcev2
20    {
21        private JObject encryptObject = new JObject();
22        
23        public string jwetoken = "";
24        public CyberSourcev2(String keyID)
25        {
26            //   String keyBody = new String(Base64.DecodeFromUtf8(
27
28            //recape
29            //split the private key (check if its private or public) at the full-stops.
30            string keyIdSplit = keyID.Split('.')[1];
31
32            //convert the privat key from base 64 (encoding)
33            byte[] data = Convert.FromBase64String(keyIdSplit);
34
35            //convert the byte array decoded string to a string
36            string decodedString = Encoding.UTF8.GetString(data);
37            
38            //serialise string into a Json (even though its still a string... so what does Serialize actually do?...)
39            var serializeAddressFormatted = JsonConvert.SerializeObject(decodedString);
40
41            //DeSerialise the string into a Jason Object or Jobject.
42            var routes_list2 = (JObject)JsonConvert.DeserializeObject(decodedString);
43            
44            //Retrieve the value kid from jason property
45            var kid = routes_list2.Descendants()
46                 .OfType<JProperty>()
47                 .FirstOrDefault(x => x.Name == "kid")
48                 ?.Value.ToString();
49
50            //Retrieve the value jwk from jason property (which is a object itself, a json i think)
51            var jwk = routes_list2.Descendants()
52             .OfType<JProperty>()
53             .FirstOrDefault(x => x.Name == "jwk")
54             ?.Value.ToString();
55
56            //convert from json property to string
57            //  string  = result2.ToString();
58            //   string  = JsonConvert.SerializeObject(result3).ToString();
59
60
61            //not sure what needs to go in payload... if naything in my case
62            Card card = new Card();
63            var cardJson = JsonConvert.SerializeObject(card);
64
65            string payload = cardJson.ToString();
66            //headers seems to be kid? (private id? i think)
67            var headers = new Dictionary<string, object> { { "kid", kid }, };
68
69            // byte[] secretKey =< secret key bytes here >;
70
71            //var parameters = GetRSAParameters(jwk);
72            // var rsaKey = RsaKey.New(parameters);
73            var js = new JavaScriptSerializer();
74            var jwk2 = js.Deserialize<IDictionary<string, string>>(jwk);
75            byte[] e = Base64Url.Decode(jwk2["e"]);
76            byte[] n = Base64Url.Decode(jwk2["n"]);
77
78            RSA key = RSA.Create();
79            RSAParameters keyParams = new RSAParameters();
80            keyParams.Exponent = e;
81            keyParams.Modulus = n;
82            keyParams.P = null;
83            keyParams.Q = null;
84
85            key.ImportParameters(keyParams);
86
87//            string rsaJwkStr = rsaKey.GetJwk();
88            encryptObject.Add("context", keyID);
89            encryptObject.Add("index", 0);
90            encryptObject.Add("data", cardJson);
91            JWE test = new JWE();
92                
93            //payload would be card object which is a json serialised and then cast to string
94            var jweToken = JWT.Encode(encryptObject.ToString(), key, JweAlgorithm.RSA_OAEP, JweEncryption.A256GCM, extraHeaders: headers);
95            jwetoken = jweToken;
96            //when you have created the card object and it appears working...
97            //youll want to setup the one from github in java and pass in the JWK value to see what it returns
98            //compare with your result.
99
100            Console.WriteLine();
101
102
103            Console.WriteLine("");
104        }
105       
106    }
107}
108
109
110
111
112//kid = the kid references the public key that was used to encrypt the data
113//JWK = the key is the public key to which the JWE was encrypted