/// <summary>
/// Adds Aes Key to KeyManager if you pass null as second parameter the Key will be generated automatically.
/// </summary>
/// <param name="alias">The name of a Key.</param>
/// <param name="key">The binary content of Key.</param>
/// <param name="password">The password that will be used to encrypt an Key value.</param>
public void AddAesKey(string alias, byte[] key = null, string password = null)
{
if (key == null)
{
if (!this.Exists(alias, password))
{
KeyManager.CreateAesKey(256, alias, new Policy(password, true)); // Creates new Aes key if it`s not already inside KeyManager.
}
}
else
{
Key k = new Key(key, KeyType.Aes, password); // Creates Key (generic class for holding Keys e.g. Aes,Rsa.
try
{
if (!this.Exists(alias, password))
{
KeyManager.Save(alias, k, new Policy(password, true)); // Saves Created key to KeyManager.
}
}
catch (Exception ex)
{
Log.Error("SecureRepository_KEYS", ex.Message);
}
}
}
/// <summary>
/// Creates Aes Key if one does not already exists inside KeyManager under _alias.
/// </summary>
private void CreateAesKey()
{
bool hasKey = true;
try
{
Key k;
k = KeyManager.Get(this.alias, this.password); // Checks if Aes Key exists inside KeyManager.
// Checks if Key is proper Aes Key, if not we will have to delete it and generate proper one.
if (k.Type != KeyType.Aes)
{
hasKey = false;
this.keys.Remove(this.alias);
}
}
catch
{
// e.g. Key is not in KeyManager.
hasKey = false;
}
// Generates new Aes key.
if (!hasKey)
{
try
{
KeyManager.CreateAesKey(256, this.alias, new Policy(this.password, true));
}
catch (Exception ex)
{
Log.Error("SecureRepository_CRYPTOGRAPHY", ex.Message);
}
}
}
