Encryption-Decryption/encrypt.py at master · vaibhavimishra/Encryption-Decryption · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
#!/usr/bin/python
import os, sys
import getpass
import random
import cv2
from Crypto.Cipher import AES
from Crypto.Hash import SHA256

def encrypt(key, filename):
	chunksize = 64*1024
	outputFile = "(e)"+filename
	filesize = str(os.path.getsize(filename)).zfill(16)
	IV = ''

	for i in range(16):
		IV += chr(random.randint(0,0xFF))

	encryptor = AES.new(key, AES.MODE_CBC, IV)

	with open(filename, 'rb') as infile:
		with open(outputFile, 'wb') as outfile:
			outfile.write(filesize)
			outfile.write(IV)
                        os.remove(filename)

			while True:
				chunk = infile.read(chunksize)

				if len(chunk) == 0:
					break
				elif len(chunk) % 16 != 0:
					chunk += ' ' * (16 - (len(chunk) % 16))

				outfile.write(encryptor.encrypt(chunk))


def decrypt(key, filename):
	chunksize = 64*1024
	outputFile = filename[3:]

	with open(filename, 'rb') as infile:
		filesize = long(infile.read(16))
		IV = infile.read(16)

		decryptor = AES.new(key,AES.MODE_CBC, IV)

		with open(outputFile, 'wb') as outfile:
			while True:
				chunk = infile.read(chunksize)

				if len(chunk) == 0:
					break
				outfile.write(decryptor.decrypt(chunk))
			outfile.truncate(filesize)


def getKey(password):
	hasher = SHA256.new(password)
	return hasher.digest()

def Main():
	choice = raw_input("Would you like to Encrypt File(EF) or Encrypt Directory(ED) or Decrypt File(DF) or Decrypt Directory(DD) ?: ")
        choice1 = raw_input("Would you like to encrypt-decrypt using (P)assword or (I)mage or (B)oth ?: ")

	if choice == 'EF' and choice1 == 'I':
		filename = raw_input("File to encrypt: ")
		img = raw_input("Image Password: ")
                password = cv2.imread(img,0)
                cv2.imshow("Gray", password)
                encrypt(getKey(str(password)), filename)
		print filename+" is encrypted"

        elif choice == 'DF' and choice1 == 'I':
		filename = raw_input("File to decrypt: ")
                img = raw_input("Image Password: ")
                password = cv2.imread(img,0)
                cv2.imshow("Gray", password)
                decrypt(getKey(str(password)), filename)
                print filename+" is decrypted"

        elif choice == 'EF' and choice1 == 'P':
                filename = raw_input("File to encrypt: ")
                password = getpass.getpass("Text Password: ")
                encrypt(getKey(str(password)), filename)
                print filename+" is encrypted"

        elif choice == 'DF' and choice1 == 'P':
                filename = raw_input("File to decrypt: ")
                password = getpass.getpass("Text Password: ")
                decrypt(getKey(str(password)), filename)
                print filename+" is decrypted"

        elif choice == 'EF' and choice1 == 'B':
                filename = raw_input("File to encrypt: ")
                password1 = getpass.getpass("Text Password: ")
                img = raw_input("Image Password:")
                password2 = cv2.imread(img,0)
                cv2.imshow("Gray", password2)
                password = str(password1)+str(password2)
                encrypt(getKey(str(password)), filename)
                print filename+" is encrypted"

        elif choice == 'DF' and choice1 == 'B':
                filename = raw_input("File to encrypt: ")
                password1 = getpass.getpass("Text Password: ")
                img = raw_input("Image Password:")
                password2 = cv2.imread(img,0)
                cv2.imshow("Gray", password2)
                password = str(password1)+str(password2)
                decrypt(getKey(str(password)), filename)
                print filename+" is decrypted"

        elif choice == 'ED' and choice1 == 'P':
                filename2 = raw_input("Directory to encrypt: ")
                s1='tar -czf '+filename2+'.tar.gz '+filename2
                os.system(s1)
                filename = filename2+'.tar.gz'
                password = getpass.getpass("Text Password: ")
                encrypt(getKey(str(password)), filename)
                print filename+" is encrypted"
                os.system('rm -rf '+filename2)
                os.system('rm -rf '+filename2+'.tar.gz')

        elif choice == 'DD' and choice1 == 'P':
                filename = raw_input("Directory to decrypt: ")
                password = getpass.getpass("Text Password: ")
                decrypt(getKey(str(password)), filename)
                print filename+" is decrypted"
                s1 = 'tar -xzf '+filename[3:]
                os.system(s1)
                s2 = 'rm -rf \''+filename+'\''
                os.system(s2)
                os.system('rm -rf '+filename[3:])

        elif choice == 'ED' and choice1 == 'I':
                filename2 = raw_input("Directory to encrypt: ")
                s1='tar -czf '+filename2+'.tar.gz '+filename2
                os.system(s1)
                filename = filename2+'.tar.gz'
                password1 = raw_input("Image Password: ")
                password = cv2.imread(password1,0)
                cv2.imshow("Gray",password)
                encrypt(getKey(str(password)), filename)
                print filename+" is encrypted"
                os.system('rm -rf '+filename2)
                os.system('rm -rf '+filename2+'.tar.gz')

        elif choice == 'DD' and choice1 == 'I':
                filename = raw_input("Directory to decrypt: ")
                img = raw_input("Image Password: ")
                password = cv2.imread(img,0)
                cv2.imshow("Gray", password)
                decrypt(getKey(str(password)), filename)
                print filename+" is decrypted"
                s1 = 'tar -xzf '+filename[3:]
                os.system(s1)
                s2 = 'rm -rf \''+filename+'\''
                os.system(s2)
                os.system('rm -rf '+filename[3:])

        elif choice == 'ED' and choice1 == 'B':
                filename2 = raw_input("Directory to encrypt: ")
                s1='tar -czf '+filename2+'.tar.gz '+filename2
                os.system(s1)
                filename = filename2+'.tar.gz'
                password1 = getpass.getpass("Text Password: ")
                img = raw_input("Image Password: ")
                password2 = cv2.imread(img,0)
                cv2.imshow("Gray",password2)
                password = str(password1)+str(password2)
                encrypt(getKey(str(password)), filename)
                print filename+" is encrypted"
                os.system('rm -rf '+filename2)
                os.system('rm -rf '+filename2+'.tar.gz')

        elif choice == 'DD' and choice1 == 'B':
                filename = raw_input("Directory to decrypt: ")
                password1 = getpass.getpass("Text Password: ")
                img = raw_input("Image Password: ")
                password2 = cv2.imread(img,0)
                cv2.imshow("Gray", password2)
                password = str(password1)+str(password2)
                decrypt(getKey(str(password)), filename)
                print filename+" is decrypted"
                s1 = 'tar -xzf '+filename[3:]
                os.system(s1)
                s2 = 'rm -rf \''+filename+'\''
                os.system(s2)
                os.system('rm -rf '+filename[3:])

        else:
		print "No option selected, closing ....."

if __name__ == '__main__':
    try:
        Main()
    except:
        print('Please give valid input')