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Comrad/komrade/backend/crypt.py
quadrismegistus 0d9b554117 updates
2020-09-06 19:43:18 +01:00

147 lines
4.0 KiB
Python

"""
Storage for both keys and data
"""
import os,sys; sys.path.append(os.path.abspath(os.path.join(os.path.abspath(os.path.join(os.path.dirname(__file__),'..')),'..')))
from komrade import *
from simplekv.fs import FilesystemStore
from simplekv.memory.redisstore import RedisStore
import redis
import hashlib,os
import zlib
LOG_GET_SET = True
class Crypt(Logger):
def __init__(self,name=None,fn=None,cell=None,init_d=None):
if not name and fn: name=os.path.basename(fn).replace('.','_')
self.name,self.fn,self.cell = name,fn,cell
self.store = FilesystemStore(self.fn)
if init_d:
for k,v in init_d.items():
try:
self.store.put(k,v)
except OSError as e:
self.log('!!',e)
self.log('!! key ->',k)
self.log('!! val ->',v)
raise KomradeException()
def log(self,*x):
if LOG_GET_SET:
super().log(*x)
def hash(self,binary_data):
return hashlib.sha256(binary_data).hexdigest()
# return zlib.adler32(binary_data)
def force_binary(self,k_b):
if k_b is None: return None
if type(k_b)==str: k_b=k_b.encode()
if type(k_b)!=bytes: k_b=k_b.decode()
return k_b
def package_key(self,k,prefix=''):
self.log('k???',type(k),k)
if not k: return b''
self.log('prefix???',type(prefix),prefix)
k_b = self.force_binary(k)
self.log(type(k_b),k_b)
# k_s = k_b.decode()
# self.log(type(k_s),k_s)
# k_s2 = prefix + k_s
# self.log(type(k_s2),k_s2)
# k_b2 = k_s2.encode()
k_b2 = self.force_binary(prefix) + k_b
self.log('k_b2',type(k_b2),k_b2)
# k_b = self.cell.encrypt(k_b)
# prefix_b = self.force_binary(prefix)
return k_b2
def package_val(self,k):
k_b = self.force_binary(k)
if self.cell is not None: k_b = self.cell.encrypt(k_b)
return k_b
def unpackage_val(self,k_b):
try:
if self.cell is not None: k_b = self.cell.decrypt(k_b)
except ThemisError:
pass
return k_b
def set(self,k,v,prefix=''):
self.log('set() k -->',prefix,k)
k_b=self.package_key(k,prefix=prefix)
self.log('set() k_b -->',k_b)
k_b_hash = self.hash(k_b)
self.log('k_b_hash',type(k_b_hash),k_b_hash)
self.log('set() v -->',v)
v_b=self.package_val(v)
self.log(f'set(\n\t{prefix}{k},\n\t{k_b}\n\t{k_b_hash}\n\t\n\t{v_b}\n)\n')
# stop
# stop
return self.store.put(k_b_hash,v_b)
def exists(self,k,prefix=''):
return bool(self.get(k,prefix=prefix))
def get(self,k,prefix=''):
self.log('k1? -->',prefix,k)
k_b=self.package_key(k,prefix=prefix)
self.log('k2? -->',k_b)
k_b_hash = self.hash(k_b)
self.log('k_b_hash',type(k_b_hash),k_b_hash)
try:
v=self.store.get(k_b_hash)
except KeyError:
return None
self.log('v? -->',v)
v_b=self.unpackage_val(v)
self.log('v_b?',v_b)
self.log('get()',k_b,'-->',v_b)
return v_b
class KeyCrypt(Crypt):
def __init__(self):
return super().__init__(name=PATH_CRYPT_CA_KEYS.replace('.','_'))
class DataCrypt(Crypt):
def __init__(self):
return super().__init__(name=PATH_CRYPT_CA_DATA.replace('.','_'))
from collections import defaultdict
class CryptMemory(Crypt):
def __init__(self):
self.data = defaultdict(None)
self.crypt = defaultdict(None)
self.cell = None
def set(self,k,v,prefix=''):
k_b=self.package_key(k,prefix=prefix)
v_b=self.package_val(v)
self.data[k]=v_b
self.crypt[k_b]=v_b
if __name__=='__main__':
crypt = Crypt('testt')
print(crypt.set('hellothere',b'ryan'))
# print(crypt.get(b'hello there'))