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#DESHIFRLASH KODINI HARFLARGA O„GIRISH
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| bet | 45/96 | | Sana | 30.07.2024 | | Hajmi | 4,2 Mb. | | #268923 |
Bog'liq Axborot xavfsizligi 2022 (1)#DESHIFRLASH KODINI HARFLARGA O„GIRISH
s0="" s1="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
for t in range (0,l): z=deshifrmatn[t]-1 s0=s0+s1[z]
print(s0)
RSA FAYL BILAN ISHLASHGA MO„JALLANGAN DASTURI:
fin = open("input.txt")
fout = open("output.txt","w") s = fin.readline()
l=len(s)
print("Matn uzunligi:",l)
#1-Qadam
print('p tub son kiriting! p:=') p=int(input())
print('q tub son kiriting! q:=') q=int(input())
#2-Qadam
# n ni aniqlaymiz n=p*q print('n=',n)
#3-Qadam
#Eyler formulasidan m ni aniqlaymiz
m=(p-1)*(q-1)
print('m=',m)
#4-Qadam
# m bilan o„zoro tub bo„lgan {t} sonlar to„plami aniqlanadi
t=[]
for i in range (1,m+1): k=0
for j in range (1,i+1): if i%j==0:
k=k+1 if k==2:
if m%i!=0: t.append(i)
print("d=",t)
# {t} sonlar to„plamidan tasodifiy d-DESHIFRLASH kaliti tanlanadi
import random d=random.choice(t)
print("Deifrlash kaliti tanlanadi(d;n):=",d,";",n)
#5-Qadam
# (e*d mod m=1) tenglamadan e-SHIFRLASH kaliti topiladi
e=1
while (e*d%m!=1)or(e==d): e=e+1
print("Sifrlash kaliti (e;n):=",e,";",n)
#Ochiq matn shifrLASH JARAYONI
index=[] shifrmatn=[] shifrmatn2=""
for t in range (0,l): x = ord(s[t]) index.append(x) y=x**e%n
shifrmatn.append(y) shifrmatn2+=bin(y)
print("index:",index) print("shifrmatn:",shifrmatn) print("shifrmatn2:",shifrmatn2) print("Shifrlash muofoqiyatli bajarildi!!!")
#DESHIFRLASH JARAYONI
deshifrmatn=[] s=shifrmatn
for t in range (0,l): y=int(s[t])**d%n deshifrmatn.append(y)
print("deshifrmatn:",deshifrmatn)
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