/// <summary> /// One-way transformation. The spec says that the password must be /// padded with blanks, Samba does it iwth 0 ??? /// <para>OWF = Ex(P14, S8)</para> /// </summary> /// <param name = "password">password</param> /// <returns>byte[16]</returns> internal static byte[] GetLmOwf(string password) { var p14 = new byte[14]; password = password.ToUpper(); for (int i = 0; i < password.Length; i++) { p14[i] = (byte)(password[i] & 0xff); } var s16 = new byte[16]; var key7 = new byte[7]; var key8 = new byte[8]; var e8 = new byte[8]; for (int i = 0; i < 2; i++) { Array.Copy(p14, 7 * i, key7, 0, 7); Des.MakeSmbKey(key7, key8); var des = new Des(key8); des.Encrypt(S8, e8); Array.Copy(e8, 0, s16, 8 * i, 8); } return(s16); }
private static void E_P16(byte[] p14, byte[] p16) { var key7 = new byte[7]; var key8 = new byte[8]; var e8 = new byte[8]; for (int i = 0; i < 2; i++) { Array.Copy(p14, 7 * i, key7, 0, 7); Des.MakeSmbKey(key7, key8); var des = new Des(key8); des.Encrypt(S8, e8); Array.Copy(e8, 0, p16, 8 * i, 8); } }
private static void E_P24(byte[] p21, byte[] c8, byte[] p24) { var key7 = new byte[7]; var key8 = new byte[8]; var e8 = new byte[8]; for (int i = 0; i < 3; i++) { Array.Copy(p21, 7 * i, key7, 0, 7); Des.MakeSmbKey(key7, key8); var des = new Des(key8); des.Encrypt(c8, e8); Array.Copy(e8, 0, p24, 8 * i, 8); } }
/// <summary> /// Encrypts password /// </summary> /// <param name = "s21">Session key</param> /// <param name = "c8">challange</param> /// <returns>byte[24]</returns> internal static byte[] GetAuthData(byte[] s21, byte[] c8) { var key7 = new byte[7]; var key8 = new byte[8]; var e8 = new byte[8]; var rn = new byte[24]; for (int i = 0; i < 3; i++) { Array.Copy(s21, 7 * i, key7, 0, 7); Des.MakeSmbKey(key7, key8); var des = new Des(key8); des.Encrypt(c8, e8); Array.Copy(e8, 0, rn, 8 * i, 8); } return(rn); }
private static byte[] GetOldPwHash(byte[] p14key, byte[] in16) { var s16 = new byte[16]; var key7 = new byte[7]; var key8 = new byte[8]; var e8 = new byte[8]; var s8 = new byte[8]; for (int i = 0; i < 2; i++) { Array.Copy(p14key, 7 * i, key7, 0, 7); Des.MakeSmbKey(key7, key8); var des = new Des(key8); Array.Copy(in16, 8 * i, s8, 0, 8); des.Encrypt(s8, e8); Array.Copy(e8, 0, s16, 8 * i, 8); } return(s16); }