First commit

main.py

@@ -0,0 +1,75 @@
+# coding: utf-8
+
+from argparse import ArgumentParser
+import matplotlib.pyplot as plt
+from lorem import text as loremtext
+
+
+def checkArguments():
+	args = ArgumentParser(description='Cryptanalyst')
+	args.add_argument('-f', '--filename', help='Text to analyze')
+	args.add_argument('-s', '--stats', help='Statistics', action='store_true')
+	args.add_argument('-d', '--decrypt', help='Decrypt Caesar text', action='store_true')
+	return args.parse_args()
+
+def readCipherText(filename):
+	file = []
+	with open(filename, 'r') as f:
+		data = f.readlines()
+
+		for entry in data:
+			file.append(entry.strip())
+
+	return file
+
+def main():
+	args = checkArguments()
+	cipherFile = None
+
+	if args.filename:
+		cipherFile = readCipherText(args.filename)
+
+	if args.stats:
+		stats(cipherFile)
+	if args.decrypt:
+		decryptCaesarText(cipherFile)	
+	
+
+def stats(file=None):
+	if file is None:
+		text = loremtext()
+	else:
+		text = file
+
+	lettersOccurence = {}
+	letterUpperToAscii = ord('A') # Get the ASCII code
+	for i in range (0, 26):
+		lettersOccurence[chr(i + letterUpperToAscii)] = 0
+
+	for line in text:
+		for letter in line:
+			letter = letter.upper()
+			if letter in lettersOccurence:
+				lettersOccurence[letter] = lettersOccurence[letter] + 1
+
+	x = [chr(letter + 65) for letter in range(0, 26)]
+	y = [lettersOccurence[tmp] for tmp in lettersOccurence]
+
+	largeur = 0.5
+	plt.bar(x, y, largeur)
+	plt.show()
+
+def decryptCaesarText(cipherFile):
+	if cipherFile is None:
+		return
+
+	#for lines in cipherFile:
+	#	splitLines = lines.split(' ')
+
+	#	for word in splitLines:
+	#		if len(word) <= 3:
+	#			print(word)
+	
+
+if __name__ == "__main__":
+	main()

test.txt.crypt

@@ -0,0 +1,2 @@
+AJGNNQ YQTNF!
+LG UWKU WP OGUUCIG GP ENCKT !!