def main(countRun):
fileName = "../main.resources/mixedText.txt"
maxKeyLength = 24
randomizer = 1
randomizer_action = "add"
maxMsgLength = 500
testNum=2
for _ in range (countRun):
input_cipher=encryptor.cipherText(fileName, maxKeyLength, randomizer, randomizer_action, testNum, maxMsgLength)
decryptor.arrayPopulator(fileName, testNum, input_cipher)
print('\n')
print("======================================================================")
print("======================================================================")
print('\n')
def encryptor(fileName, maxKeyLength, randomizer, randomizer_action, testNum,
maxMsgLength):
ciphertext_str = cipherText(fileName, maxKeyLength, randomizer,
randomizer_action, testNum, maxMsgLength)
tot_runtime = decryptor.arrayPopulator(fileName, testNum, ciphertext_str)
# print(f"**************Runtime of the Decryptor is {tot_runtime}")
return (tot_runtime)
def encryptor(maxKeyLength, randomizer, randomizer_action, testNum,
maxMsgLength):
alphaDict = {
0: ' ',
1: 'a',
2: 'b',
3: 'c',
4: 'd',
5: 'e',
6: 'f',
7: 'g',
8: 'h',
9: 'i',
10: 'j',
11: 'k',
12: 'l',
13: 'm',
14: 'n',
15: 'o',
16: 'p',
17: 'q',
18: 'r',
19: 's',
20: 't',
21: 'u',
22: 'v',
23: 'w',
24: 'x',
25: 'y',
26: 'z'
}
ciphertext = []
ciphertext_flat = []
ciphertext_str = ""
encryptKey = []
random_chars = 0
# generate random key
encryptKey = enc_key_gen(maxKeyLength)
t = len(encryptKey)
if testNum == 1:
plaintext_from_file = \
test1_plaintext_gen("../main.resources/test1dict.txt")
else:
plaintext_from_file = \
test2_plaintext_gen("../main.resources/test2dict_400.txt", maxMsgLength)
plaintext = plaintext_from_file
plaintext_len = len(plaintext)
s_i = m_i = 0
while m_i < plaintext_len:
if randomizer_action == "add":
k_i = s_i % t + randomizer # randomizer is static for the entire encryption run - it's passed in
# k_i = (2*s_i + 3) % t + randomizer # randomizer is static for the entire encryption run - it's passed in
else:
k_i = s_i % t - randomizer # randomizer is static for the entire encryption run - it's passed in
if k_i >= t or k_i < 0:
s_i += 1
randchar_k = randint(0, 26)
ciphertext.insert(
len(ciphertext),
[v for k, v in alphaDict.items() if k == randchar_k])
#print("Inserted random char: ", ciphertext[len(ciphertext)-1], "At index: ", len(ciphertext)-1)
random_chars += 1
continue
else:
plaintext_k = [
k for k, v in alphaDict.items() if v == plaintext[m_i]
]
ciphertext_k = plaintext_k[0] - encryptKey[k_i]
if ciphertext_k < 0:
ciphertext_k += len(alphaDict)
ciphertext.insert(
len(ciphertext),
[v for k, v in alphaDict.items() if k == ciphertext_k])
m_i += 1
s_i += 1
# print("Modified Plaintext (# indicates random char", plaintext)
print("Plaintext Length:", len(plaintext_from_file),
" Ciphertext length:", len(ciphertext), "Rand Chars: ",
random_chars)
rand_percent = round((random_chars / len(plaintext)) * 100, 2)
print("random chars in cipher text: ", rand_percent, "%")
for elem in ciphertext:
ciphertext_flat.extend(elem)
ciphertext_str = ''.join(ciphertext_flat)
# print("Cipher text list: ", ciphertext_flat)
if testNum == 2:
print("Randomly Generated Plaintext (from dict2): '%s'" % plaintext)
print("Cipher text str: '%s'" % ciphertext_str)
start = time.time()
decryptor.arrayPopulator(testNum, ciphertext_str)
end = time.time()
print(f"**************Runtime of the program is {end - start}")