def keys_and_save(user_list):
keyGen = kg.RSAEncryption()
publickey, privatekey = keyGen.generate_keys()
db = connect_to_DB()
userid, username = save_user_pass(user_list,db)
save_pub_priv(userid,publickey,privatekey,db)
save_pub_key(userid,username,publickey,db)
db.commit()
def verify_signature(raw_parameters, signature, username):
key = fetch_specific_attribs_record([
'public_key',
], 'users', "where username = '******'".format(username))
data = ''.join([str(x) for x in raw_parameters])
keyGen = kg.RSAEncryption()
result = keyGen.verifying_signature(data, signature, key['public_key'])
return result
def create_signature(raw_parameters, username):
key = fetch_specific_attribs_record([
'private_key',
], 'users', "where username = '******'".format(username))
data = ''.join([str(x) for x in raw_parameters])
keyGen = kg.RSAEncryption()
signature = keyGen.generate_signature(data, key['private_key'])
return signature
def send_message (message, realUser, claimingUser):
if claimingUser == None:
whoPosted = realUser
else:
whoPosted = claimingUser
keyGen = kg.RSAEncryption()
privatekey = get_privatekey(realUser)
signature = keyGen.generate_signature(message,privatekey)
save_secure_message(message,signature,whoPosted)
def edit_message(messageid,message,username):
keyGen = kg.RSAEncryption()
privatekey = get_privatekey(username)
signature = keyGen.generate_signature(message, privatekey)
db = connect_to_DB()
sql = "UPDATE messages SET message = (%s), user = (%s), signature = (%s) WHERE mid = (%s)"
parameters =(message,username,signature,messageid)
db.insert(sql,parameters)
db.commit()
def check_signature(messageList):
resultList = []
keyGen = kg.RSAEncryption()
publickeyDict = fetch_users_public()[0]
for elements in messageList:
sender = elements[1]
publickey = publickeyDict[sender]
message = elements [0]
signature = elements[2]
messageid = elements[3]
authenticity = keyGen.verifying_signature(message,signature,publickey)
resultList.append((message,sender,authenticity,messageid))
return resultList
def define_user(username, latitude, longitude, role):
isadmin = 1 if role == 'admin' else 0
user_attribs = [x for x in table_attribs('users')]
user_id = get_nextval_counter('user_id')
sql = "INSERT INTO users VALUES (%s)" % ",".join(
"%s" for i in range(len(user_attribs)))
keyGen = kg.RSAEncryption()
pub_key, priv_key = keyGen.generate_keys()
parameters = [
user_id, username, priv_key, pub_key, latitude, longitude, isadmin
]
db.insert(sql, parameters)
db.commit()
print 'The user {0} with {1} role added to the database'.format(
username, role)