private BlowfishAlgorithm(byte[] key, byte[] iv, bool useCBC, bool isEncryptor)
{
if (null == key)
{
GenerateKey();
}
else
{
Key = key;
}
if (useCBC)
{
IV = this.origIV = iv;
this.bfc = new BlowfishCBC(KeyValue, 0, KeyValue.Length);
this.bfc.SetIV(IVValue, 0);
}
else
{
this.bfe = new BlowfishECB(KeyValue, 0, KeyValue.Length);
}
this.isEncryptor = isEncryptor;
}
/// <see cref="BlowfishNET.BlowfishECB.Clone"/>
public new object Clone()
{
BlowfishCBC result;
result = new BlowfishCBC();
result.pbox = (uint[])this.pbox.Clone();
result.sbox1 = (uint[])this.sbox1.Clone();
result.sbox2 = (uint[])this.sbox2.Clone();
result.sbox3 = (uint[])this.sbox3.Clone();
result.sbox4 = (uint[])this.sbox4.Clone();
result.block = (byte[])this.block.Clone();
result.isWeakKey = this.isWeakKey;
result.ivHi = this.ivHi;
result.ivLo = this.ivLo;
return(result);
}
/// <summary>Initializes the instance with a (new) key string.</summary>
/// <param name="keyStr">The key material.</param>
/// <see cref="BlowfishSimple(String)"/>
public void Initialize(String keyStr)
{
byte[] keyRaw = TransformKey(keyStr);
HashAlgorithm sha = new SHA1CryptoServiceProvider();
byte[] key = sha.ComputeHash(keyRaw);
byte[] checksumSalt = new byte[20];
this.rng.GetBytes(checksumSalt);
byte[] checksum = CalcKeyChecksum(checksumSalt, keyRaw);
byte[] checksumCombo = new byte[checksumSalt.Length + checksum.Length];
Array.Copy(
checksumSalt,
0,
checksumCombo,
0,
checksumSalt.Length);
Array.Copy(
checksum,
0,
checksumCombo,
checksumSalt.Length,
checksum.Length);
this.keyChecksum = Convert.ToBase64String(checksumCombo);
this.bfc = new BlowfishCBC(key, 0, key.Length);
Array.Clear(keyRaw, 0, keyRaw.Length);
Array.Clear(key, 0, key.Length);
}
/// <see cref="BlowfishNET.BlowfishECB.Clone"/>
public new object Clone()
{
BlowfishCBC result;
result = new BlowfishCBC();
result.pbox = (uint[]) this.pbox.Clone();
result.sbox1 = (uint[]) this.sbox1.Clone();
result.sbox2 = (uint[]) this.sbox2.Clone();
result.sbox3 = (uint[]) this.sbox3.Clone();
result.sbox4 = (uint[]) this.sbox4.Clone();
result.block = (byte[]) this.block.Clone();
result.isWeakKey = this.isWeakKey;
result.ivHi = this.ivHi;
result.ivLo = this.ivLo;
return result;
}
