public byte[] Decrypt(byte[] cipher, byte[] nonce)
{
byte[] message = new byte[cipher.Length];
Curve25519XSalsa20Poly1305.Open(message, cipher, nonce, RemotePublicKey, PrivateKey);
byte[] decrypted = new byte[cipher.Length - 32];
Buffer.BlockCopy(message, 32, decrypted, 0, cipher.Length - 32);
return(decrypted);
}
public static byte[] BoxUnbox(byte[] test)
{
byte[] alicePK, aliceSK, bobPK, bobSK;
Curve25519XSalsa20Poly1305.KeyPair(out alicePK, out aliceSK);
Curve25519XSalsa20Poly1305.KeyPair(out bobPK, out bobSK);
byte[] nonce = NewNonce();
byte[] cipher = new byte[test.Length + 32];
byte[] message = new byte[test.Length + 32];
byte[] messageDecrypted = new byte[test.Length + 32];
Buffer.BlockCopy(test, 0, message, 32, test.Length);
Curve25519XSalsa20Poly1305.Box(cipher, message, nonce, bobPK, aliceSK);
Curve25519XSalsa20Poly1305.Open(messageDecrypted, cipher, nonce, alicePK, bobSK);
byte[] clear = new byte[messageDecrypted.Length - 32];
Buffer.BlockCopy(messageDecrypted, 32, clear, 0, messageDecrypted.Length - 32);
return(clear);
}
public static void Main()
{
Byte[] skx = { 0xb5, 0xe8, 0xa, 0x23, 0xe5, 0xb1, 0x89, 0x4e, 0x1, 0x71, 0x6d, 0xc6, 0xd3, 0xaa, 0x87, 0xec, 0x8, 0x19, 0x1b, 0x17, 0x91, 0xcb, 0x9e, 0x7f, 0x81, 0x80, 0x4d, 0xb2, 0xd2, 0x2, 0x6f, 0x77 };
Byte[] pkx = null;
DateTime dt = DateTime.Now;
for (int i = 0; i < 10; i++)
{
Curve25519XSalsa20Poly1305.GetPublicKey(out pkx, skx);
}
Console.WriteLine("Time: " + DateTime.Now.Subtract(dt).TotalMilliseconds.ToString());
Console.Write("SECRET: ");
for (int i = 0; i < Curve25519XSalsa20Poly1305.SECRETKEYBYTES; i++)
{
Console.Write(skx[i].ToString("x2"));
}
Console.WriteLine();
Console.Write("PUBLIC: ");
for (int i = 0; i < Curve25519XSalsa20Poly1305.SECRETKEYBYTES; i++)
{
Console.Write(pkx[i].ToString("x2"));
}
Console.WriteLine();
//Console.ReadLine();
//return;
//curve25519xsalsa20poly1305 cb = new curve25519xsalsa20poly1305();
Byte[] pk1, sk1, pk2, sk2;
Curve25519XSalsa20Poly1305.KeyPair(out pk1, out sk1);
Curve25519XSalsa20Poly1305.KeyPair(out pk2, out sk2);
Console.WriteLine("Two key pairs:");
Console.Write("SERCET 1: ");
for (int i = 0; i < Curve25519XSalsa20Poly1305.SECRETKEYBYTES; i++)
{
Console.Write(sk1[i].ToString("x2"));
}
Console.WriteLine();
Console.Write("PUBLIC 1: ");
for (int i = 0; i < Curve25519XSalsa20Poly1305.PUBLICKEYBYTES; i++)
{
Console.Write(pk1[i].ToString("x2"));
}
Console.WriteLine();
Console.Write("SERCET 2: ");
for (int i = 0; i < Curve25519XSalsa20Poly1305.SECRETKEYBYTES; i++)
{
Console.Write(sk2[i].ToString("x2"));
}
Console.WriteLine();
Console.Write("PUBLIC 2: ");
for (int i = 0; i < Curve25519XSalsa20Poly1305.PUBLICKEYBYTES; i++)
{
Console.Write(pk2[i].ToString("x2"));
}
Console.WriteLine();
Console.ReadLine();
Byte[] n = new Byte[24];
Byte[] c = new Byte[32 + 32];
Byte[] m = new Byte[32 + 32];
Byte[] r = new Byte[32 + 32];
int mlen = 64;
(new Random()).NextBytes(m);
for (int i = 0; i < 32; i++)
{
m[i] = 0;
}
Console.Write("INPUT: ");
for (int i = 32; i < 64; i++)
{
Console.Write(m[i].ToString("x2"));
}
Console.WriteLine();
int o1, o2;
//Byte[] before1 = curve25519xsalsa20poly1305.crypto_box_beforenm(pk2, sk1);
//Byte[] before2 = curve25519xsalsa20poly1305.crypto_box_beforenm(pk1, sk2);
//o1 = curve25519xsalsa20poly1305.crypto_box_afternm(c, m, n, before1);
//o2 = curve25519xsalsa20poly1305.crypto_box_open_afternm(r, c, n, before2);
o1 = Curve25519XSalsa20Poly1305.Box(c, 0, m, 0, mlen, n, pk2, sk1);
o2 = Curve25519XSalsa20Poly1305.Open(r, 0, c, 0, mlen, n, pk1, sk2);
fixed(Byte *pk1p = pk1, sk1p = sk1, np = n, cp = c, mp = m, pk2p = pk2, sk2p = sk2, rp = r)
{
//o1 = curve25519xsalsa20poly1305.crypto_box(cp, mp, (ulong)mlen, np, pk2p, sk1p);
//o2 = curve25519xsalsa20poly1305.crypto_box_open(rp, cp, (ulong)mlen, np, pk1p, sk2p);
}
Console.Write("OUTPUT: ");
for (int i = 32; i < 64; i++)
{
Console.Write(r[i].ToString("x2"));
}
Console.WriteLine();
Console.WriteLine("RESULT: {0} {1}", o1, o2);
Console.ReadLine();
}