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encryption.py
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encryption.py
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import random
import csv
def Text_input():
String=input("Enter the Plain-text:")
String=String+'\r'+'\n'
return String
def file_upload(filename):
string=''
file = open(filename, "r")
for line in file:
for char in line:
string+=char
string=string+'\r'+'\n'
return string
def Text_ascii(String):
Acii_Array=[]
convertText=''
for c in String:
ascii_value= str(ord(c))
if len(ascii_value)<3:
pdded_Text='0'*(3-len(ascii_value))+ascii_value
else:
pdded_Text=ascii_value
convertText=convertText+' '+pdded_Text
return convertText.lstrip()
def Ascii_binary(ascii_array):
bin_array=[]
for digit in ascii_array:
#print(bin(ord(digit))[2:].zfill(8))
bin_array.append(bin(ord(digit))[2:].zfill(8))
return bin_array
def Ascii_binary_func(String):
ascii_array=[]
bin_array=[]
print(String)
for i in range(len(String)):
ascii_array.append(ord(String[i]))
bin_array.append(bin(ascii_array[i])[2:].zfill(8))
return ascii_array,bin_array
def split_chunks(array, chunksize,skip_tail=False):
formated_list = []
if chunksize <= len(array):
formated_list.extend([array[:chunksize]])
formated_list.extend(split_chunks(array[chunksize:], chunksize, skip_tail))
elif not skip_tail and array:
formated_list.extend([array])
return formated_list
def String_Split(bin_array):
joined=''.join(bin_array)
#print(joined,'Length',len(joined))
mid=len(joined)//2
Str1=""
Str2=""
String1=[]
String2=[]
#print(mid)
for i in range(0,mid):
#print(bin_array[i])
Str1+=joined[i]
for j in range(mid,len(joined)):
Str2+=joined[j]
String1=split_chunks(Str1,8)
String2=split_chunks(Str2,8)
print ('String1=',String1)
print ('String2=',String2)
return String1,String2
def Crossover(String1,String2):
indpb = 0.5
temp = String1
size = min(len(String1), len(String2))
for i in range(size):
for j in range(len(String1[i])):
if random.random() < indpb:
#print random.random()
String1[i] = list(String1[i])
String2[i] = list(String2[i])
String1[i][j], String2[i][j] = String2[i][j], String1[i][j]
String1[i]=''.join(map(str, String1[i]))
String2[i]=''.join(map(str, String2[i]))
return String1,String2
def mutation(String1,rate):
number=rate*len(String1)*8
count=0
#print('length of string',len(String1))
while(count<number):
#print(count)
j=random.randrange(0,len(String1))
#print(j)
k=random.randrange(0,8)
#print(k)
#print('String before mutation=',String1[j])
if(String1[j][k]=='1'):
String1[j] = list(String1[j])
String1[j][k] = 0
String1[j]=''.join(map(str, String1[j]))
#print('String after mutation =',String1[j])
elif (String1[j][k]=='0'):
String1[j] = list(String1[j])
String1[j][k] = 1
String1[j]=''.join(map(str, String1[j]))
#print('String after mutation =',String1[j])
count+=1
return String1
def combine(String1,String2):
str1=''.join(String1)
str2=''.join(String2)
Str=str1+str2
combinedlist=split_chunks(Str,8)
return combinedlist
def Encryption(string):
#convert String to Ascii value
print("+++++++++++++++++++++++++++++++++++++++++++++++++++++++ Ascii array ++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
print('')
ascii_string=Text_ascii(string)
print(ascii_string)
#conver Ascii to binary
print("+++++++++++++++++++++++++++++++++++++++++++++++++++++++ binary array ++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
print('')
bin_array=Ascii_binary(ascii_string)
print(bin_array)
#Split the binary Array into two
print("+++++++++++++++++++++++++++++++++++++++++++++++++++++++ split String ++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
print('')
string1,string2=String_Split(bin_array)
print("STRING 1:")
print(string1)
print('')
print("STRING 2:")
print(string2)
#Crossover the String and return
print("+++++++++++++++++++++++++++++++++++++++++++++++++++++++ crossover ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
print('')
String1,String2=Crossover(string1,string2)
combinedlist=combine(String1,String2)
print(combinedlist)
print("+++++++++++++++++++++++++++++++++++++++++++++++++++++++ mutated data ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++")
print('')
mutated_string= mutation(combinedlist,0.20)
print(mutated_string)
return bin_array,mutated_string
def main():
print("Select the option to give input:")
print("1.command line input")
print("2.File upload")
option=int(input("Enter your option:"))
if option==1:
string=Text_input()
binArray,cipher=Encryption(string)
if option==2:
filename=input("Enter the filename with extension:")
string=file_upload(filename)
binArray,cipher=Encryption(string)
final_array=[]
dataString=""
for i in range(len(cipher)):
subset=[]
#Y.append(int(item,2))
for elements in cipher[i]:
subset.append(elements)
dataString=dataString+''.join(elements)
#subset.ap+pend(int(binArray[i],2))
strng='00'+binArray[i]
subset.append(strng)
dataString=dataString+binArray[i]
final_array.append(subset)
#print(dataString)
file1 = open("myfile.txt","w")#write mode
file1.write(dataString)
file1.close()
print("Data send to myfile.txt")
#print(final_array)
#print(Y)
with open('data1.csv', mode='w') as employee_file:
employee_writer = csv.writer(employee_file, delimiter=',', quotechar='"', quoting=csv.QUOTE_MINIMAL)
for item in final_array:
employee_writer.writerow(item)
if __name__ == '__main__':
main()