ДИПЛОМНА РАБОТА - Св. Климент Охридски

More documents

Recommendations

Info

Софийски Университет "Св. Климент Охридски" , Факултет по Математика и ИнформатикаМагистърска програма : З И К С Мget{return this.indentity;}}public bool IsInRole(string role){return role == this.role;}private string GetUserRole(){XmlTextReader xmlReader = new XmlTextReader("Users.xml");xmlReader.WhitespaceHandling = WhitespaceHandling.None;while (xmlReader.Read()){if (xmlReader["name"] == this.indentity.Name)return xmlReader["role"];}throw newSystem.Security.SecurityException(String.Format("Ролята на потребителя {0}не е намерена в базата данни.",this.indentity.Name));}}}using System;Приложение 4Клас AES[C#]namespace AesLib{public class Aes // Advanced Encryption Standard{public enum KeySize { Bits128, Bits192, Bits256 }; // key size, inbits, for construtorprivate int Nb;// block size in 32-bit words. Always 4 forAES. (128 bits).private int Nk; // key size in 32-bit words. 4, 6, 8. (128,192, 256 bits).private int Nr; // number of rounds. 10, 12, 14.private byte[] key;ctor.private byte[,] Sbox;// the seed key. size will be 4 * keySize from// Substitution box- 142 -Учебна година : 2007/2008; Летен семестър; Ася Огнянова Григорова; FN 22167
Софийски Университет "Св. Климент Охридски" , Факултет по Математика и ИнформатикаМагистърска програма : З И К С Мprivate byte[,] iSbox; // inverse Substitution boxprivate byte[,] w; // key schedule array.private byte[,] Rcon; // Round constants.private byte[,] State; // State matrixpublic Aes(KeySize keySize, byte[] keyBytes){SetNbNkNr(keySize);this.key = new byte[this.Nk * 4]; // 16, 24, 32 byteskeyBytes.CopyTo(this.key, 0);in wBuildSbox();BuildInvSbox();BuildRcon();KeyExpansion(); // expand the seed key into a key schedule and store} // Aes constructorpublic void Cipher(byte[] input, byte[] output) // encipher 16-bitinput{// state = inputthis.State = new byte[4,Nb]; // always [4,4]for (int i = 0; i < (4 * Nb); ++i){this.State[i % 4, i / 4] = input[i];}AddRoundKey(0);for (int round = 1; round
Page 1 and 2:
Софийски университ
Page 3 and 4:
Софийски Университ
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92: Софийски Университ
Page 141: Софийски Университ
show all

ДИПЛОМНА РАБОТА - Св. Климент Охридски

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?