def index():
form = CaesarForm()
if form.validate_on_submit():
rot = form.rotateBy.data
text = form.textArea.data
global message
message = caesar_encrypt(text, rot)
return redirect(url_for('caesarCipher'))
return render_template('home.html', form=form, legend='Caesar Cypher')
def encrypt():
try:
decrypt_pressed = bool(request.form['decrypt'])
except KeyError:
decrypt_pressed = False
text = request.form['plaintext']
rot = int(request.form['rot'])
key = request.form['key']
method = request.form['encrypt-method']
if not decrypt_pressed:
cipher = caesar_encrypt(
text, rot) if method == 'caesar' else vigenere_encrypt(text, key)
else:
cipher = caesar_encrypt(text, abs(26-rot)) if method == 'caesar' \
else vigenere_decrypt(text, key)
return render_template('form.html',
ciphertext=cipher,
rot=rot,
key=key,
decrypt_hide=decrypt_pressed,
last_method=method)
def caesarCipher():
form = CaesarForm()
if form.validate_on_submit():
rot = form.rotateBy.data
text = form.textArea.data
global message
message = caesar_encrypt(text, rot)
return redirect(url_for('caesarCipher'))
code = message
return render_template('caesar.html',
title='Caesar Cipher',
form=form,
legend='Caesar Cipher',
code=code)
def encrypt():
rot = int(request.form['rot'])
text = request.form['text']
return form.format(text=caesar_encrypt(text, rot))
def encrypt():
user_rot = int(request.form['rot'])
user_text = request.form['text']
my_text = caesar_encrypt(user_text, user_rot)
return form.format(my_text)
return count
if __name__ == '__main__':
if len(sys.argv) != 1:
print("Usage: caesar_brute.py")
sys.exit(1)
input = ""
for line in sys.stdin:
input = input + line.lower()
most_likely_text = None
most_likely_shift = None
most_likely_count = 0
for shift in range(len(alphabet)):
decrypted = caesar_encrypt(input, -shift)
print("Decrypted, shift = {}\n{}\n".format(shift, decrypted))
common_count = count_common_words(decrypted)
if common_count > most_likely_count:
most_likely_count = common_count
most_likely_shift = shift
most_likely_text = decrypted
print(
"The most likely shift is {} due to finding {} common words in its decrypted text\n{}"
.format(most_likely_shift, most_likely_count, most_likely_text))