public string decryptString(string encrypted)
{
byte[] iv = getbytes("12345678");
byte[] plain = getbytes(encrypted);
byte[] decrypted = new byte[plain.Length];
Array.Clear(decrypted, 0, decrypted.Length);
byte[] key = getbytes("p1zz@p1zz@p1zz@p1zz@p1zz@p1zz@p1");
BlowfishCBC bfc = new BlowfishCBC();
bfc.IV = iv;
bfc.Initialize(key, 0, key.Length);
bfc.Decrypt(plain, 0, decrypted, 0, plain.Length);
return(getstring(decrypted));
}
/// <summary>Creates a new BlowfishEasy instance. Notice that this ctor
/// supports only the new way of how string are set up. There is no support
/// for the old BlowfishJ key setup available right now (which had a
/// design flaw by not using the full Unicode character space).</summary>
/// <param name="password">The password used for encryption and decryption.</param>
public BlowfishEasy(String password)
{
int c = password.Length;
byte[] passw = new byte[c << 1];
for (int i = 0, j = 0; i < c; i++)
{
int chr = (int)password[i];
passw[j++] = (byte)((chr >> 8) & 0x0ff);
passw[j++] = (byte)(chr & 0x0ff);
}
SHA1 sha = new SHA1Managed();
byte[] key = sha.ComputeHash(passw);
this.bfc = new BlowfishCBC(key, 0, key.Length);
}
public static void TestBlowfishCBC()
{
String sDemo = "The Blowfish encryption algorithm was introduced in 1994.";
System.Console.WriteLine(sDemo);
byte[] ptext = StringToBlocks(sDemo);
byte[] key = new byte[16];
byte bI;
for (bI = 0; bI < key.Length; bI++)
{
key[bI] = bI;
}
byte[] iv = new byte[Blowfish.BLOCKSIZE];
for (bI = 0; bI < iv.Length; bI++)
{
iv[bI] = (byte)bI;
}
BlowfishCBC bfc = new BlowfishCBC(key, iv);
byte[] ctext = new byte[ptext.Length];
bfc.Encrypt(ptext, ctext, 0, 0, ptext.Length);
System.Console.WriteLine(BlocksToString(ctext));
bfc.Iv = iv;
bfc.Decrypt(ctext, ctext, 0, 0, ctext.Length);
bfc.Burn();
System.Console.WriteLine(BlocksToString(ctext));
}
public string encryptString(string decrypted, string password)
{
byte[] iv = getbytes("12345678");
int blocksize = iv.Length;
int numblocks = (decrypted.Length / blocksize) + 1;
int decSize = decrypted.Length;
//pad the string with nulls so that it is a multiple of blocksize
for (int i = decSize; i < numblocks * blocksize; i++)
{
decrypted += '\0';
}
byte[] plain = getbytes(decrypted);
byte[] encrypted = new byte[plain.Length];
Array.Clear(encrypted, 0, encrypted.Length);
byte[] key = getbytes(password);
BlowfishCBC bfc = new BlowfishCBC();
bfc.IV = iv;
bfc.Initialize(key, 0, key.Length);
bfc.Encrypt(plain, 0, encrypted, 0, plain.Length);
return(string2hex(getstring(encrypted)));
}
