Мамлакатимизда аxборот-коммуникация

partial
class
Form1
: 
Form 
{ 
public
Form1() 
{ 
InitializeComponent(); 
} 
OleDbConnection
oldb = 
new
OleDbConnection
(
"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=Sherzod 
aka.mdb"
); 
private
void
label1_Click(
object
sender, 
EventArgs
e) 
{ 
Form4
f4 = 
new
Form4
(); 
f4.ShowDialog(); 
} 
public
static
bool
ha = 
false
; 
public
string
index; 
private
void
button1_Click(
object
sender, 
EventArgs
e) 
{ 
Form1
f1 = 
new
Form1
(); 
Form2
f2 = 
new
Form2
(); 
Form3
f3 = 
new
Form3
(); 
Form4
f4 = 
new
Form4
(); 
if
(textBox1.Text.Length == 0) 
MessageBox
.Show(
"Loginni 
kiriting"
); 
if
(textBox3.Text.Length == 0) 
MessageBox
.Show(
"parolni 
kiriting"
); 
if
(textBox1.Text.Length != 0 && textBox3.Text.Length != 0) 
{ 
OleDbCommand
oldbcommand = 
new
OleDbCommand
(
"Select * from 
table1"
, oldb); 
oldb.Open(); 
OleDbDataReader
oldbreader = oldbcommand.ExecuteReader(); 
double
sads = 
Math
.Pow(2, 30); 
while
(oldbreader.Read()) 
{ 
string
username = oldbreader.GetString(5); 
if
(username == heshlash(textBox1.Text)) 
{ 
string
password = oldbreader.GetString(6).ToLower(); 
if
(password == heshlash(textBox3.Text)) 
{ 
ha = 
true
; 
textBox4.Text = oldbreader.GetString(7); 
textBox5.Text = oldbreader.GetString(8); 
textBox6.Text = oldbreader.GetString(9); 
textBox7.Text = oldbreader.GetString(10); 

---

92 
string
ismi = oldbreader.GetString(1); 
string
familiyasi = oldbreader.GetString(2); 
string
sharifi = oldbreader.GetString(3); 
string
korxona = oldbreader.GetString(4); 
f2.richTextBox6.Text = ismi + 
" "
+ familiyasi + 
" "
+ sharifi + 
" "
+ korxona; 
f2.label3.Text = textBox4.Text; 
f2.label4.Text = textBox5.Text; 
f2.label9.Text = textBox6.Text; 
f2.label10.Text = textBox7.Text; 
f2.label11.Text = textBox7.Text; 
f2.ShowDialog(); 
break
; 
} 
else 
{ 
MessageBox
.Show(
"Parolni noto'g'ri kiritildi"
); 
ha = 
true
; 
break
; 
} 
} 
} 
if
(ha != 
true
) 
MessageBox
.Show(
"Kiritilgan user name bizning bazada 
yo'q"
); 
oldbreader.Close(); 
oldb.Close(); 
} 
} 
public
string
heshlangan; 
public
string
heshlash(
string
soz) 
{ 
soz = soz.ToLower(); 
heshlangan = 
""
; 
string
text = 
Convert
.ToString(soz); 
byte
[] dataArray = 
Encoding
.ASCII.GetBytes(text); 
HashAlgorithm
sha = 
new
SHA1CryptoServiceProvider
(); 
byte
[] result = sha.ComputeHash(dataArray); 
for
(
int
i = 0; i < result.Length; i++) 
{ 
heshlangan += result[i].ToString(); 
} 
return
heshlangan; 
} 
private
void
Form1_Load(
object
sender, 
EventArgs
e) 
{ 
timer1.Start(); 
} 
} 
} 
public
partial
class
Form4
: 
Form 
{ 
public
Form4() 
{ 
InitializeComponent(); 
} 
OleDbConnection
oldb = 
new
OleDbConnection
(
"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=Sherzod 
aka.mdb"
); 
public
int
button; 
private
void
Form4_Load(
object
sender, 
EventArgs
e) 

---

93 
{ 
timer1.Start(); 
button = 0; 
} 
private
void
timer1_Tick(
object
sender, 
EventArgs
e) 
{ 
if
(textBox1.Text.Length != 0 && textBox2.Text.Length != 0 && 
textBox3.Text.Length != 0 && 
textBox4.Text.Length != 0 && textBox5.Text.Length != 0 && 
textBox6.Text.Length != 0) 
{ 
button1.Enabled = 
true
; 
} 
} 
private
void
label11_Click(
object
sender, 
EventArgs
e) 
{ 
} 
double
q, p, x,y; 
double
d = 3; 
double
n; 
double
Eyler; 
double
R = 
19,a=1,b=1; 
Random
soncha = 
new
Random
(); 
private
void
button1_Click(
object
sender, 
EventArgs
e) 
{ 
button++; 
if
(button == 2) 
{ 
oldb.Open(); 
OleDbCommand
com = oldb.CreateCommand(); 
com.CommandText = 
"insert into table1( 
ISMI,FAMILIYASI,SHARIFI,KORXONA,LOGIN,PASPORT,OCHIQKALIT,YOPIQKALIT,N,D) 
values(ISMI,FAMILIYASI,SHARIFI,KORXONA,LOGIN,PASPORT,OCHIQKALIT,YOPIQKALIT,N,
D)"
; 
com.Parameters.Add(
"@ISMI"
, 
OleDbType
.VarChar).Value = 
textBox2.Text; 
com.Parameters.Add(
"@FAMILIYASI"
, 
OleDbType
.VarChar).Value = 
textBox1.Text; 
com.Parameters.Add(
"@SHARIFI"
, 
OleDbType
.VarChar).Value = 
textBox3.Text; 
com.Parameters.Add(
"@KORXONA"
, 
OleDbType
.VarChar).Value = 
textBox4.Text; 
com.Parameters.Add(
"@LOGIN"
, 
OleDbType
.VarChar).Value = 
heshlash(textBox5.Text); 
com.Parameters.Add(
"@PASPORT"
, 
OleDbType
.VarChar).Value = 
heshlash(textBox6.Text); 
com.Parameters.Add(
"@OCHIQKALIT"
, 
OleDbType
.VarChar).Value = 
label9.Text; 
com.Parameters.Add(
"@YOPIQKALIT"
, 
OleDbType
.VarChar).Value = 
label11.Text; 
com.Parameters.Add(
"@N"
, 
OleDbType
.VarChar).Value = 
n.ToString(); 
com.Parameters.Add(
"@D"
, 
OleDbType
.VarChar).Value = 
label10.Text; 
com.ExecuteScalar(); 
oldb.Close(); 
this
.Close(); 
} 
int
pu = soncha.Next(100); 
int
qu = soncha.Next(100); 
int
Eu = soncha.Next(100); 
x = sonniTekshir(Eu); 
p = sonniTekshir(pu); 

---

94 
q = sonniTekshir(qu); 
n = p * q; 
double
eyler=(p-1)*(q-1); 
label9.Text = x.ToString(); 
y = 2; 
for
(; ; ) 
{ 
if
((a * x + b * y + R * x * y) % n == 0) 
{ 
break
; 
} 
else
{ y++; } 
} 
d = 2; 
for
(; ; ) 
{ 
if
((x * d - 1) % eyler == 0) 
{ 
break
; } 
else
d++; 
} 
label11.Text = y.ToString(); 
label10.Text = d.ToString(); 
Form1
f1 = 
new
Form1
(); 
textBox1.Enabled = 
false
; 
textBox2.Enabled = 
false
; 
textBox3.Enabled = 
false
; 
textBox4.Enabled = 
false
; 
textBox5.Enabled = 
false
; 
textBox6.Enabled = 
false
; 
this
.ClientSize = 
new
System.Drawing.
Size
(465, 304); 
} 
public
string
heshlangan; 
public
string
heshlash(
string
soz) 
{ 
soz = soz.ToLower(); 
heshlangan = 
""
; 
string
text = 
Convert
.ToString(soz); 
byte
[] dataArray = 
Encoding
.ASCII.GetBytes(text); 
HashAlgorithm
sha = 
new
SHA1CryptoServiceProvider
(); 
byte
[] result = sha.ComputeHash(dataArray); 
for
(
int
i = 0; i < result.Length; i++) 
{ 
heshlangan += result[i].ToString(); 
} 
return
heshlangan; 
} 
public
int
sonniTekshir(
int
ji) 
{ 
Random
tavakkal = 
new
Random
(ji); 
f: 
int
q = tavakkal.Next(200, 2000); 
int
j = 1; 
for
(
int
k = 2; k < q - 1; k++) 
{ 
if
(q % k == 0) {j++;} 
if
(j > 1) {
break
;} 
} 
if
(j > 1) {
goto
f;} 
return
q;
} 
} 

---

95 
} 
public
partial
class
Form2
: 
Form 
{ 
public
Form2() 
{ 
InitializeComponent(); 
Form1
f1=
new
Form1
(); 
timer1.Start(); 
} 
OleDbConnection
oldb = 
new
OleDbConnection
(
"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=Sherzod 
aka.mdb"
); 
private
void
Form2_Load(
object
sender, 
EventArgs
e) 
{ 
Form1
f1=
new
Form1
(); 
OleDbCommand
oldbcommand = 
new
OleDbCommand
(
"Select * from 
table1"
, oldb); 
oldb.Open(); 
OleDbDataReader
oldbreader = oldbcommand.ExecuteReader(); 
} 
private
void
timer1_Tick(
object
sender, 
EventArgs
e) 
{ 
if
(richTextBox1.Text.Length != 0) 
button3.Enabled = 
true
; 
} 
private
void
button2_Click(
object
sender, 
EventArgs
e) 
{ 
Form3
f3 = 
new
Form3
(); 
f3.label5.Text = label4.Text; 
f3.label2.Text = label9.Text; 
f3.label3.Text = label11.Text; 
f3.richTextBox3.Text = richTextBox4.Text; 
f3.richTextBox2.Text = richTextBox5.Text; 
f3.richTextBox1.Text = richTextBox3.Text; 
f3.ShowDialog(); 
} 
public
string
heshlanganmalumot; 
private
void
button3_Click(
object
sender, 
EventArgs
e) 
{ 
heshlanganmalumot=heshla(richTextBox1.Text); 
int
Nninguzunligi=label9.Text.Length; 
richTextBox2.Text = ikkilik(heshlanganmalumot); 
button1.Enabled = 
true
; 
} 
public
long
a, b, R, n,x,y; 
private
void
button1_Click(
object
sender, 
EventArgs
e) 
{ 
richTextBox3.Text = 
""
; 
richTextBox4.Text = 
""
; 
richTextBox5.Text = 
""
; 
a = 1; 
b = 1; 
R = 19; 
x = 
Convert
.ToInt64(label3.Text); 
y=
Convert
.ToInt64(label4.Text); 
n = 
Convert
.ToInt64(label9.Text); 
string
parametrlimatn = parametrik(a, b, R, n, x, 
heshlanganmalumot.Substring(0,4)); 
richTextBox4.Text = shifrlash(richTextBox1.Text, n, x); 
richTextBox5.Text = shifrlash(richTextBox6.Text, n, x); 

---

96 
richTextBox3.Text = (parametrlimatn); 
button2.Enabled = 
true
; 
} 
public
string
parametrik(
long
a,
long
b,
long
R,
long
n,
long
kalit,
string
matn) 
{ 
long
matn1 = 
Convert
.ToInt64(matn); 
string
shifr = 
Convert
.ToString((matn1 * a + kalit * b + R * 
matn1 * kalit)%n); 
return
shifr; 
} 
public
string
shifrlash(
string
matn,
long
N,
long
x) 
{ 
long
daraja, qoldiq = 1;
string
shifrmatn=
""
; 
for
(
int
i = 0; i < matn.Length; i++) 
{ 
long
soni = 
Convert
.ToChar(matn[i]); 
for
(
int
j = 1; j <= x; j++) 
{ 
daraja = qoldiq * soni; 
qoldiq = daraja % N; 
} 
string
raqam = qoldiq.ToString(); 
int
l = 0; 
for
(
int
s = 0; s < N.ToString().Length; s++) 
{ 
if
(raqam.Length + l == N.ToString().Length) 
{ shifrmatn += qoldiq.ToString(); 
break
; } 
else 
{ shifrmatn += 
"0"
; l++; } 
} 
qoldiq = 1; 
} 
return
shifrmatn; 
} 
public
string
shifrlash1(
string
matn, 
long
N, 
long
x) 
{ 
long
daraja, qoldiq = 1; 
string
shifrmatn = 
""
; 
long
soni = 
Convert
.ToInt64(matn); 
for
(
int
j = 1; j <= x; j++) 
{ 
daraja = qoldiq * soni; 
qoldiq = daraja % N; 
} 
shifrmatn = qoldiq.ToString(); 
return
shifrmatn; 
} 
string
ikkilik(
string
plain_text) 
{ 
string
srt = 
""
; 
string
str1 = 
""
; 
int
plantextuzunligi = plain_text.Length; 
for
(
int
i = 0; i < plantextuzunligi; i++) 
{ 
int
charCode = 
Convert
.ToInt32(plain_text[i]); 
int
k2; 
for
(
int
j = 7; j >= 0; j--) 
{ 
k2 = (charCode >> j) & 1; 
srt += 
Convert
.ToString(k2); 
}
} 

---

97 
for
(
int
i = 0; i < srt.Length; i++) 
{ 
if
(srt[i] == 
'0'
) 
str1 += 
"1"
; 
else
str1 += 
"0"
; 
} 
return
str1; 
} 
public int paraR(int f1, int f2) 
{ 
int para = (a*f1 + b*f2 + R * f1*f2) % n; 
return para; 
} 
public
string
heshla(
string
soz) 
{ 
byte
[] dataArray = 
Encoding
.ASCII.GetBytes(soz); 
HashAlgorithm
sha = 
new
SHA1CryptoServiceProvider
(); 
byte
[] result = sha.ComputeHash(dataArray); 
soz = 
""
; 
for
(
int
i = 0; i < result.Length; i++) 
{ 
soz+= result[i].ToString(); 
} 
return
soz; 
} 
private
void
groupBox2_Enter(
object
sender, 
EventArgs
e) 
{ 
} 
private
void
groupBox6_Enter(
object
sender, 
EventArgs
e) 
{ 
} 
} 
public