3XGmdcav

1var key1 = sha1(body);
2var key2 = key1 . SECRET_KEY;
3var key3 = sha1(key2);
4var signature = base64_encode(key3);
5	
6static string ComputeSignature(byte[] body, byte[] secret) {
7    using (var sha1 = SHA1.Create())
8    {
9        var key1 = sha1.ComputeHash(body);
10        var key2 = key1.Concat(secret).ToArray();
11        var key3 = sha1.ComputeHash(key2);
12        return Convert.ToBase64String(key3);
13    }
14}
15	
16var body = Encoding.UTF8.GetBytes(bodyAsString);
17	
18private string GetHashedMessage(String _secret)
19    {
20        System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
21        byte[] keyByte = encoding.GetBytes(_secret);
22        String _message= "Your message that needs to be hashed";
23        HMACSHA1 hmacsha1 = new HMACSHA1(keyByte);
24
25        byte[] messageBytes = encoding.GetBytes(_message);
26        byte[] hashmessage = hmacsha1.ComputeHash(messageBytes);
27        return ByteToString(hashmessage).ToLower();
28    }
29
30    public string ByteToString(byte[] buff)
31    {
32        string sbinary = "";
33
34        for (int i = 0; i < buff.Length; i++)
35        {
36            sbinary += buff[i].ToString("X2"); // hex format
37        }
38        return (sbinary);
39    }