public static SecureString DecryptString(string encryptedData)
{
SecureString securedString = new SecureString();
string encryptedString = Encrypting.EncryptString(securedString);
try
{
byte[] decryptedData = System.Security.Cryptography.ProtectedData.Unprotect(
Convert.FromBase64String(encryptedData),
entropy,
System.Security.Cryptography.DataProtectionScope.LocalMachine);
SecureString ss = ToSecureString(System.Text.Encoding.Unicode.GetString(decryptedData));
Array.Clear(decryptedData, 0, decryptedData.Length);
return(ss);
}
catch
{
return(new SecureString());
}
}
public static string getAuthenticationID(string email, string psswd, string oflyAppID, string sharedSecret, string oldAuthID)
{
string oflyHashMeth = "SHA1";
string oflyTimestamp = DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ss.fffzzz");
string getAuthURL = shutterflyHost + "/auth";
string postAuthURL = shutterflyHost + "/user/" + email + "/auth?oflyAppId=" + oflyAppID;
//Timestamp formatting
int index = oflyTimestamp.LastIndexOf(':');
oflyTimestamp = oflyTimestamp.Remove(index, 1).Insert(index, "");
//Get API Signature
string rawSignature = sharedSecret + "/user/" + email + "/auth?oflyAppId=" + oflyAppID + "&oflyHashMeth=" + oflyHashMeth + "&oflyTimestamp=" + oflyTimestamp;
Byte[] encodedSignature = encoding.GetBytes(rawSignature);
byte[] encryptedSignature;
SHA1 sha = new SHA1CryptoServiceProvider();
// This is one implementation of the abstract class SHA1.
encryptedSignature = sha.ComputeHash(encodedSignature);
string apiSignature = BitConverter.ToString(encryptedSignature);
apiSignature = apiSignature.Replace("-", "");
//Get existing authorization ID
Dictionary <string, string> headers = new Dictionary <string, string>();
headers.Add("oflyHashMeth", oflyHashMeth);
headers.Add("oflyApiSig", apiSignature);
headers.Add("Authorization", "SFLY user-auth=" + oldAuthID);
headers.Add("oflyTimestamp", oflyTimestamp);
string authenticationID = "";
string result = GetMethod(getAuthURL, headers);
if (result != "")
{
XmlDocument atomXML = new XmlDocument();
using (TextReader tr = new StringReader(result))
{
atomXML.Load(tr);
}
if (atomXML.GetElementsByTagName("user:authToken").Count > 0)
{
authenticationID = atomXML.DocumentElement["entry"].ChildNodes[9].InnerText;
}
}
else
{
headers.Remove("Authorization");
int counter = 0;
do
{
authenticationID = getNewAuthID(postAuthURL, psswd, headers);
counter++;
}while (counter < 10 && authenticationID == "");
}
if (authenticationID != "")
{
//update to latest authentication ID
SecureString newAuthIDSS = new SecureString();
authenticationID.ToCharArray().ToList().ForEach(newAuthIDSS.AppendChar);
string encryptedAuthID = Encrypting.EncryptString(newAuthIDSS);
XmlDocument xml = new XmlDocument();
xml.Load(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile);
XmlNode appSettingsNode = xml.SelectSingleNode("configuration/appSettings");
// Attempt to locate the requested setting.
foreach (XmlNode childNode in appSettingsNode)
{
if (childNode.Attributes["key"].Value == "shutterFlyAuthID")
{
childNode.Attributes["value"].Value = encryptedAuthID;
}
}
result = authenticationID;
}
else
{
result = "Failed: no authentication ID.";
}
return(result);
}