/// <summary>
/// Initializes a new instance of the <see cref="Subkey"/> class. Different data is encrypted using
/// different variants of the master encryption key.
/// </summary>
/// <param name="masterKey">The master key.</param>
/// <param name="headerSubkey">The header subkey.</param>
public Subkey(AesKey masterKey, HeaderSubkey headerSubkey)
{
if (masterKey == null)
{
throw new ArgumentNullException("masterKey");
}
byte[] block = new byte[16];
byte subKeyValue;
switch (headerSubkey)
{
case HeaderSubkey.Hmac:
subKeyValue = 0;
break;
case HeaderSubkey.Validator:
subKeyValue = 1;
break;
case HeaderSubkey.Headers:
subKeyValue = 2;
break;
case HeaderSubkey.Data:
subKeyValue = 3;
break;
default:
throw new InternalErrorException("headerSubkey");
}
block[0] = subKeyValue;
using (AesCrypto aesCrypto = new AesCrypto(masterKey))
{
_subKey = new AesKey(aesCrypto.Encrypt(block));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Subkey"/> class. Different data is encrypted using
/// different variants of the master encryption key.
/// </summary>
/// <param name="masterKey">The master key.</param>
/// <param name="headerSubkey">The header subkey.</param>
public Subkey(SymmetricKey masterKey, HeaderSubkey headerSubkey)
{
if (masterKey == null)
{
throw new ArgumentNullException("masterKey");
}
byte[] block = new byte[16];
byte subKeyValue;
switch (headerSubkey)
{
case HeaderSubkey.Hmac:
subKeyValue = 0;
break;
case HeaderSubkey.Validator:
subKeyValue = 1;
break;
case HeaderSubkey.Headers:
subKeyValue = 2;
break;
case HeaderSubkey.Data:
subKeyValue = 3;
break;
default:
throw new InternalErrorException("Invalid header sub key.");
}
block[0] = subKeyValue;
_subKey = new SymmetricKey(Resolve.CryptoFactory.Legacy.CreateCrypto(masterKey, null, 0).Encrypt(block));
}
/// <summary>
/// Initializes a new instance of the <see cref="Subkey"/> class. Different data is encrypted using
/// different variants of the master encryption key.
/// </summary>
/// <param name="masterKey">The master key.</param>
/// <param name="headerSubkey">The header subkey.</param>
public Subkey(AesKey masterKey, HeaderSubkey headerSubkey)
{
if (masterKey == null)
{
throw new ArgumentNullException("masterKey");
}
byte[] block = new byte[16];
byte subKeyValue;
switch (headerSubkey)
{
case HeaderSubkey.Hmac:
subKeyValue = 0;
break;
case HeaderSubkey.Validator:
subKeyValue = 1;
break;
case HeaderSubkey.Headers:
subKeyValue = 2;
break;
case HeaderSubkey.Data:
subKeyValue = 3;
break;
default:
throw new InternalErrorException("headerSubkey");
}
block[0] = subKeyValue;
using (AesCrypto aesCrypto = new AesCrypto(masterKey))
{
_subKey = new AesKey(aesCrypto.Encrypt(block));
}
}
