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Final

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This commit is contained in:
Miguel Muniz
2024-10-07 23:58:08 -07:00
parent 6fed5d4ecd
commit 6d7693b7e2
2 changed files with 26 additions and 16 deletions
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40
DES.py
View File

@@ -3,6 +3,7 @@
import argparse import argparse
import time import time
import re
#Constants/permutations #Constants/permutations
PC1 = [ PC1 = [
@@ -221,10 +222,6 @@ def DES_Encrypt(data_block, key):
print ("Encrypted:", encrypted_data) print ("Encrypted:", encrypted_data)
def permute(data_block, permutation):
return [data_block[i - 1] for i in permutation]
def DES_Decrypt(data_block, key): def DES_Decrypt(data_block, key):
data_block = hex_to_binary(data_block) data_block = hex_to_binary(data_block)
@@ -313,7 +310,8 @@ def DES_Decrypt(data_block, key):
decrypted_data.append(data_block) decrypted_data.append(data_block)
print ("Decrypted:", decrypted_data) print ("Decrypted:", decrypted_data)
def permute(data_block, permutation):
return [data_block[i - 1] for i in permutation]
def parse_variables(file_path): def parse_variables(file_path):
variables = {} variables = {}
@@ -329,6 +327,11 @@ def parse_variables(file_path):
print(f"Error: The file {file_path} was not found.") print(f"Error: The file {file_path} was not found.")
return variables return variables
def write_result(file, label, data):
file.write("\n\n")
file.write(f"{label}=")
file.write(re.sub(r"[\[\], ']", "", str(data)))
def output_file(output_file, operation): def output_file(output_file, operation):
with open(output_file, 'w') as file: with open(output_file, 'w') as file:
# write all the sub keys to the file remove brackets quotations and commas # write all the sub keys to the file remove brackets quotations and commas
@@ -353,16 +356,23 @@ def output_file(output_file, operation):
file.write("\n") file.write("\n")
file.write(f"R{i}=") file.write(f"R{i}=")
file.write(str(right_half_f[i]).replace("[","").replace("]","").replace(",","").replace(" ","").replace("'","")) file.write(str(right_half_f[i]).replace("[","").replace("]","").replace(",","").replace(" ","").replace("'",""))
if operation == 'encryption' :
file.write("\n")
file.write("\n") if operation == 'encryption':
file.write("Result=") write_result(file, "Result", encrypted_data)
file.write(str(encrypted_data).replace("[","").replace("]","").replace(",","").replace(" ","").replace("'","")) else:
else : write_result(file, "Result", decrypted_data)
file.write("\n")
file.write("\n") # if operation == 'encryption' :
file.write("Result=") # file.write("\n")
file.write(str(decrypted_data).replace("[","").replace("]","").replace(",","").replace(" ","").replace("'","")) # file.write("\n")
# file.write("Result=")
# file.write(str(encrypted_data).replace("[","").replace("]","").replace(",","").replace(" ","").replace("'",""))
# else :
# file.write("\n")
# file.write("\n")
# file.write("Result=")
# file.write(str(decrypted_data).replace("[","").replace("]","").replace(",","").replace(" ","").replace("'",""))
def main(): def main():
start_time = time.time() start_time = time.time()
# Set up command-line argument parsing # Set up command-line argument parsing

2
sample_output.txt
View File

@@ -85,4 +85,4 @@ R15=01000011010000100011001000110100
L16=01000011010000100011001000110100 L16=01000011010000100011001000110100
R16=00001010010011001101100110010101 R16=00001010010011001101100110010101
Result=85E813540F0AB405 Result=85E813540F0AB405