def decrypt(self, text):
"""Decrypt text and return the result"""
output = []
text = process_string(text)
for char in text:
output.append(english_char(char))
return ''.join(output)
def decrypt(self, text, a, b):
"""Decrypt text and return the result
D(x) = a^-1 ( x - b ) mod m
"""
output = ""
text = process_string(text)
count = 0
a_inv = 0
while count < m:
flag = (a * count) % m
if flag == 1:
a_inv = count
break;
count = count + 1
for char in text:
if char.isspace():
output += " "
else:
char_code = a_inv*(lookup_table[char]-b) % m
for k, v in lookup_table.items():
if v == char_code:
break
output += k
return output
def encrypt(self, text):
"""Encrypt text and return the result"""
output = []
text = process_string(text)
for char in text:
output.append(keyword_char(char))
return ''.join(output)
def decrypt(self, text):
"""Decrypt text and return the result"""
output = ""
text = process_string(text)
for char in text:
if char.isspace():
output += " "
else:
output += lookup_table[char]
return output
def encrypt(self, text, a, b):
"""Encrypt text and return the result
E(x) = ( ax + b ) mod m
"""
output = ""
text = process_string(text)
for char in text:
if char.isspace():
output += " "
else:
char_code = (a*lookup_table[char] + b) % m
for k, v in lookup_table.items():
if v == char_code:
break
output += k
return output