public string Sign(SignatureContext context)
{
var hmac = new HMACSHA1();
var secret = context.Secret.UrlEncode();
if (secret == null) secret = Guid.NewGuid().ToString();
hmac.Key = context.Encoding.GetBytes(secret);
var source = new StringBuilder();
if (context.SortedQuery != null)
{
// append path
foreach (var key in context.SortedQuery.AllKeys)
{
source.Append(key);
source.Append(context.SortedQuery[key]);
}
}
var buffer = context.Encoding.GetBytes(source.ToString());
var signBytes = hmac.ComputeHash(buffer);
var sb = new StringBuilder();
foreach (byte b in signBytes)
{
sb.Append(b.ToString("x2"));
}
return sb.ToString();
}
static string GetMd5Hash(SignatureContext context, MD5 md5Hash, string input)
{
// Convert the input string to a byte array and compute the hash.
var data = md5Hash.ComputeHash(context.Encoding.GetBytes(input));
// Create a new Stringbuilder to collect the bytes
// and create a string.
var sb = new StringBuilder();
// Loop through each byte of the hashed data
// and format each one as a hexadecimal string.
for (int i = 0; i < data.Length; i++)
{
sb.Append(data[i].ToString("x2"));
}
// Return the hexadecimal string.
return sb.ToString();
}
public string Sign(SignatureContext context)
{
var ret = string.Empty;
var source = new StringBuilder();
source.Append(context.Secret);
if (context.SortedQuery != null)
{
foreach (var key in context.SortedQuery.AllKeys)
{
source.Append(key);
source.Append(context.SortedQuery[key]);
}
}
using (MD5 md5Hash = MD5.Create())
{
ret = GetMd5Hash(context, md5Hash, source.ToString());
}
return ret;
}
public string Sign(SignatureContext context)
{
return this.Signature.Sign(context);
}
public string Sign(SignatureContext context)
{
return(this.Signature.Sign(context));
}
