-
Notifications
You must be signed in to change notification settings - Fork 2
/
utils.py
188 lines (173 loc) · 5.32 KB
/
utils.py
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
from eth_utils import is_hex_address
from web3.auto import w3
from eth_account.messages import defunct_hash_message
from flask_mail import Mail, Message
import binascii
from Crypto.Protocol.KDF import PBKDF2
from Crypto.Hash import SHA512
from Crypto.Random import get_random_bytes
from Crypto.PublicKey import RSA
def recover_to_addr(token, signature):
msghash = defunct_hash_message(text=token)
address = w3.eth.account.recoverHash(msghash, signature=signature)
res = is_hex_address(address)
return address
def generateRSAKeypair():
keyPair = RSA.generate(2048)
return (
keyPair.publickey().export_key().decode(),
keyPair.export_key().decode()
)
def getKey(total_doc, masterKey, user_address):
salt = user_address.lower().strip().encode()
masterKey = masterKey.strip().encode()
keys = PBKDF2(masterKey, salt, 512, count=1000, prf= None)
keys = binascii.hexlify(keys)
startIndex = (total_doc*16)%450
if startIndex + 128 >= 500:
startIndex = total_doc%256
key = keys[startIndex:startIndex+128]
return key.decode()
def prepareMailMsg(name, from_mail, address, pr, MAIL_SENDER):
msg = Message(
recipients=[from_mail.strip(),],
sender = MAIL_SENDER
)
msgHtml = f"""
<html>
<head><title>Welcome To DigiLocker</title></head>
<body>
<p> Hello {name} <br /><br/>
Congrats. Your account has been created in Digilocker. Here are the details: </p>
<table>
<tr><td>Account Address: </td><td><strong>{address}</strong></td></tr>
"""
msgHtml += "</table>"
if pr:
msgHtml += """
<p><br>PFA the private key. This private key is used to download the document which
is shared with you in future.<br/>
"""
msg.attach(
"pr.key",
'application/octect-stream',
pr
)
msgHtml += """
Don't share these credentials with anyone, keep it with you.<br></p>
<p>Best<br>Digilocker Team</p>
</body>
</html>
"""
msg.html = msgHtml
msg.subject = "Account Created Successfully"
return msg
def prepareRequestMail(
owner_name,
owner_email,
requester_email,
doc_name,
approval_url,
owner_address,
requester_address,
MAIL_SENDER
):
msgHtml = f"""
<!DOCTYPE html>
<html>
<head><title>Approval Request for {doc_name}</title>
</head>
<body>
<p> Hello {owner_name}, <br /> <br />
The request has been raised by email : {requester_email}
({requester_address}) for your document <strong>{doc_name}</strong>.
<br /><br />
Please click on below button to permit the read access of the owned
document.
<br/>
<br/>
<a class = "btn" href="{approval_url}"
style = "text-decoration: none;
color: #fff;
background-color: #26a69a;
text-align: center;
letter-spacing: .5px;
padding: 20px;
font-size: 14px;
outline: 0;
border: none;
border-radius: 2px;
line-height: 36px;
text-transform: uppercase;"
>
Click to aproove the request
</a>
<br />
<br />
<p>Best<br>Digilocker Team</p>
</body>
</html>
"""
msg = Message(
recipients=[owner_email.strip(),],
sender = MAIL_SENDER
)
msg.html = msgHtml
msg.subject = f"Read access Request for document: {doc_name} by {requester_email}"
return msg
def prepareApro0vedMail(
owner_name,
owner_email,
requester_email,
doc_name,
approval_url,
owner_address,
requester_address,
MAIL_SENDER
):
msgHtml = f"""
<!DOCTYPE html>
<html>
<head><title>{owner_name} shared document with you</title>
</head>
<body>
<p> Hello {owner_name}, <br /> <br />
{owner_email} has shared a document {doc_name} with you. You can now download the document.
<br /><br />
Please click on below button to download the document.
<br/>
<br/>
<a class = "btn" href="{approval_url}"
style = "text-decoration: none;
color: #fff;
background-color: #26a69a;
text-align: center;
letter-spacing: .5px;
padding: 20px;
font-size: 14px;
outline: 0;
border: none;
border-radius: 2px;
line-height: 36px;
text-transform: uppercase;"
>
Click to Download
</a>
<br />
<br />
<p>
On clicking the above link, you will be asked for your private Key
to download the document.
</p>
<br>
<p>Best<br>Digilocker Team</p>
</body>
</html>
"""
msg = Message(
recipients=[requester_email.strip(),],
sender = MAIL_SENDER
)
msg.html = msgHtml
msg.subject = f"{owner_name} shared document with you"
return msg