public KeyInfo GetKeyInfo(string KeyName, byte[] IV, SymmetricAlgorithm Crypter)
{
if(null == this.KeyCache )
lock(_sharedKeyCacheLock)
{
if(null == this.KeyCache)
this.KeyCache = new ConcurrentDictionary<string, KeyInfo>();
}
if (KeyCache.ContainsKey(KeyName))
return KeyCache[KeyName];
string keyValue = null;
KeyInfo retVal = new KeyInfo();
if (null != this.SharedKeyServer)
keyValue = this.SharedKeyServer.GetKey(KeyName);
if (null == keyValue && null != this.KeyServer)
keyValue = this.KeyServer.GetKey(KeyName);
if(null != keyValue)
{
retVal.KeyValue = keyValue;
int keySize = Crypter.KeySize;
byte[] workingBytes = new Rfc2898DeriveBytes(keyValue, IV).GetBytes(keySize / 4);
retVal.KeyBytes = workingBytes.Take(keySize / 8).ToArray();
retVal.SecretBytes = workingBytes.Skip(keySize / 8).Take(keySize / 8).ToArray();
//if(!KeyCache.ContainsKey(KeyName))
// lock(_sharedKeyCacheLock)
// {
// if (!KeyCache.ContainsKey(KeyName))
// KeyCache.Add(KeyName, retVal);
// }
}
return retVal;
}
