public Dictionary <string, string> GetCredential(string key)
{
string aliasKey = String.Format("cachy.{0}", key);
string credsCipherText = Configuration.GetValue <string>(key, string.Empty);
if (!String.IsNullOrEmpty(credsCipherText))
{
string credsPlainText = AndroidKeyStore.DecodeBase64AndDecrypt(aliasKey, credsCipherText);
if (!String.IsNullOrEmpty(credsPlainText))
{
JObject credsJSON = JObject.Parse(credsPlainText);
Dictionary <string, string> creds = new Dictionary <string, string>
{
{ "UserName", credsJSON["UserName"].Value <string>() },
{ "Password", credsJSON["Password"].Value <string>() }
};
return(creds);
}
else
{
return(null);
}
}
else
{
return(null);
}
}
public Task <string> UnprotectData(string cipherText)
{
return(Task <string> .Run(() =>
{
string plainText = AndroidKeyStore.DecodeBase64AndDecrypt(
ANDROIDKEYSTORE_ALIAS,
cipherText);
return (plainText);
}));
}
public Task <string> ProtectData(string plainText)
{
return(Task <string> .Run(() =>
{
string cipherText = AndroidKeyStore.EncryptAndBase64Encode(
ANDROIDKEYSTORE_ALIAS,
plainText);
return (cipherText);
}));
}
public void StoreCredential(
string key,
string username,
string password,
bool removeFirst)
{
if (removeFirst)
{
RemovePassword(key);
}
string aliasKey = String.Format("cachy.{0}", key);
JObject credsJSON = new JObject
{
{ "UserName", new JValue(username) },
{ "Password", new JValue(password) }
};
string credsPlainText = credsJSON.ToString(Newtonsoft.Json.Formatting.None);
string cipherText = AndroidKeyStore.EncryptAndBase64Encode(aliasKey, credsPlainText);
Configuration.SetValue <string>(key, cipherText);
}
