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 komrade.backend.crypt import * from abc import ABC, abstractmethod class KomradeKey(ABC): @abstractmethod def encrypt(self,msg,**kwargs): pass @abstractmethod def decrypt(self,msg,**kwargs): pass @abstractmethod def data(self): pass class KomradeSymmetricKey(KomradeKey): @property def cell(self): if not hasattr(self,'_cell'): if hasattr(self,'passphrase') and self.passphrase: self._cell = SCellSeal(passphrase=self.passphrase) elif hasattr(self,'key') and self.key: self._cell = SCellSeal(key=self.key) return self._cell def encrypt(self,msg,**kwargs): if issubclass(type(msg), KomradeKey): msg=msg.data return self.cell.encrypt(msg,**kwargs) def decrypt(self,msg,**kwargs): return self.cell.decrypt(msg,**kwargs) class KomradeSymmetricKeyWithPassphrase(KomradeSymmetricKey): def __init__(self,passphrase=DEBUG_DEFAULT_PASSPHRASE, why=WHY_MSG): self.passphrase=passphrase if not self.passphrase: self.passphrase=getpass.getpass(why) #return self.passphrase @property def data(self): return KEY_TYPE_SYMMETRIC_WITH_PASSPHRASE.encode('utf-8') class KomradeSymmetricKeyWithoutPassphrase(KomradeSymmetricKey): def __init__(self,key=None): self.key = GenerateSymmetricKey() if not key else key @property def data(self): return self.key class KomradeAsymmetricKey(KomradeKey): def __init__(self,pubkey,privkey): self.pubkey=pubkey self.privkey=privkey def encrypt(self,msg,pubkey=None,privkey=None): if issubclass(type(msg), KomradeKey): msg=msg.data pubkey=pubkey if pubkey else self.pubkey privkey=privkey if privkey else self.privkey return SMessage(privkey,pubkey).wrap(msg) def decrypt(self,msg,pubkey=None,privkey=None): pubkey=pubkey if pubkey else self.pubkey privkey=privkey if privkey else self.privkey return SMessage(privkey,pubkey).unwrap(msg) @property def data(self): return self.key class KomradeAsymmetricPublicKey(KomradeAsymmetricKey): @property def key(self): return self.pubkey class KomradeAsymmetricPrivateKey(KomradeAsymmetricKey): @property def key(self): return self.privkey class Keymaker(Logger): def __init__(self, name=None, passphrase=DEBUG_DEFAULT_PASSPHRASE, uri_id=None, keychain={}, path_crypt_keys=None, path_crypt_data=None): # set defaults self.name=name self._uri_id=uri_id self._pubkey=None self._keychain=keychain self.passphrase=passphrase self.path_crypt_keys=path_crypt_keys self.path_crypt_data=path_crypt_data def find_pubkey(self): global TELEPHONE_KEYCHAIN,OPERATOR_KEYCHAIN #self.log('keychain?',self.keychain()) if 'pubkey' in self._keychain and self._keychain['pubkey']: return self._keychain['pubkey'] res = self.crypt_keys.get(self.name, prefix='/pubkey/') if res: return res res = self.load_qr(self.name) if res: return res self.log('I don\'t know my public key!') raise KomradeException(f'I don\'t know my public key!\n{self}\n{self._keychain}') #return None @property def keys(self): return sorted(list(self.keychain().keys())) @property def top_keys(self): return [k for k in self.keys if k.count('_')==0] def keychain(self,look_for=KEYMAKER_DEFAULT_ALL_KEY_NAMES): # load existing keychain keys = self._keychain #self._keychain = keys = {**self._keychain} # make sure we have the pubkey if not 'pubkey' in self._keychain: self._keychain['pubkey']=self.find_pubkey() pubkey=self._keychain['pubkey'] # get uri uri = b64encode(pubkey) # get from cache for keyname in look_for: if keyname in keys and keys[keyname]: continue key = self.crypt_keys.get(uri,prefix=f'/{keyname}/') if key: keys[keyname]=key # try to assemble keys = self.assemble(self.assemble(keys)) #store to existing set self._keychain = keys #return return keys @property def pubkey(self): return self.keychain().get('pubkey') @property def privkey(self): return self.keychain().get('privkey') @property def adminkey(self): return self.keychain().get('adminkey') @property def pubkey_encr(self): return self.keychain().get('pubkey_encr') @property def privkey_encr(self): return self.keychain().get('privkey_encr') @property def adminkey_encr(self): return self.keychain().get('adminkey_encr') @property def pubkey_decr(self): return self.keychain().get('pubkey_decr') @property def privkey_decr(self): return self.keychain().get('privkey_decr') @property def adminkey_decr(self): return self.keychain().get('adminkey_decr') def load_qr(self,name): # try to load? contact_fnfn = os.path.join(PATH_QRCODES,name+'.png') if not os.path.exists(contact_fnfn): return '' # with open(contact_fnfn,'rb') as f: dat=f.read() from pyzbar.pyzbar import decode from PIL import Image res= decode(Image.open(contact_fnfn))[0].data # self.log('QR??',res,b64decode(res)) return b64decode(res) @property def uri_id(self): if not self._uri_id: pubkey = self.find_pubkey() self._uri_id = b64encode(pubkey) return self._uri_id ### BASE STORAGE @property def crypt_keys(self): if not hasattr(self,'_crypt_keys'): self._crypt_keys = Crypt(fn=self.path_crypt_keys) return self._crypt_keys @property def crypt_keys_mem(self): if not hasattr(self,'_crypt_keys_mem'): self._crypt_keys_mem = CryptMemory() return self._crypt_keys_mem @property def crypt_data(self): if not hasattr(self,'_crypt_data'): self._crypt_data = Crypt(fn=self.path_crypt_data) return self._crypt_data def can_log_in(self): if not self.pubkey: return False if not (self.privkey or self.privkey_encr): return False return True ### CREATING KEYS def get_new_keys(self): raise KomradeException('Every keymaker must make their own get_new_keys() !') def gen_keys_from_types(self,key_types=KEYMAKER_DEFAULT_KEY_TYPES,passphrase=DEBUG_DEFAULT_PASSPHRASE): """ Get new asymmetric/symmetric keys, given a dictionary of constants describing their type """ asymmetric_pubkey=None asymmetric_privkey=None keychain = {} for key_name,key_type_desc in key_types.items(): if key_type_desc in {KEY_TYPE_ASYMMETRIC_PUBKEY,KEY_TYPE_ASYMMETRIC_PRIVKEY}: if not asymmetric_privkey or not asymmetric_pubkey: keypair = GenerateKeyPair(KEY_PAIR_TYPE.EC) asymmetric_privkey = keypair.export_private_key() asymmetric_pubkey = keypair.export_public_key() if key_type_desc==KEY_TYPE_ASYMMETRIC_PRIVKEY: keychain[key_name] = KomradeAsymmetricPrivateKey(asymmetric_pubkey,asymmetric_privkey) elif key_type_desc==KEY_TYPE_ASYMMETRIC_PUBKEY: keychain[key_name] = KomradeAsymmetricPublicKey(asymmetric_pubkey,asymmetric_privkey) elif key_type_desc==KEY_TYPE_SYMMETRIC_WITHOUT_PASSPHRASE: keychain[key_name]=KomradeSymmetricKeyWithoutPassphrase() elif key_type_desc==KEY_TYPE_SYMMETRIC_WITH_PASSPHRASE: if not passphrase and not self.passphrase: self.passphrase=getpass.getpass(WHY_MSG) passphrase=passphrase if passphrase else self.passphrase keychain[key_name]=KomradeSymmetricKeyWithPassphrase(passphrase=passphrase) return keychain def gen_encr_keys(self,keychain,keys_to_gen,passphrase=DEBUG_DEFAULT_PASSPHRASE): """ Encrypt other keys with still other keys! """ # generate encrypted keys too for key_name in keys_to_gen: if key_name.endswith('_encr') and key_name not in keychain: # encrypt it with the associated decr self.log(f'let\'s encrypt {key_name}!') name_of_what_to_encrypt = key_name[:-len('_encr')] the_key_to_encrypt_it_with = name_of_what_to_encrypt + '_decr' if the_key_to_encrypt_it_with in keychain and name_of_what_to_encrypt in keychain: _key_decr = keychain[the_key_to_encrypt_it_with] _key = keychain[name_of_what_to_encrypt] self.log(f'about to encrypt key {name_of_what_to_encrypt}, using {the_key_to_encrypt_it_with}, which is a type {KEYMAKER_DEFAULT_KEY_TYPES[the_key_to_encrypt_it_with]} and has value {keychain[the_key_to_encrypt_it_with]}') _key_encr = _key_decr.encrypt(_key) # self.log(f'{_key}\n-- encrypting ----->\n{_key_encr}') keychain[key_name]=_key_encr return keychain def forge_new_keys(self, name=None, passphrase=DEBUG_DEFAULT_PASSPHRASE, keys_to_save = KEYMAKER_DEFAULT_KEYS_TO_SAVE_ON_SERVER, keys_to_return = KEYMAKER_DEFAULT_KEYS_TO_SAVE_ON_CLIENT, keys_to_gen = KEYMAKER_DEFAULT_KEYS_TO_GEN, key_types = KEYMAKER_DEFAULT_KEY_TYPES): self.log('forging new keys...',name,self.name) self.log('keys_to_save:',keys_to_save) self.log('keys_to_return',keys_to_return) # name if not name: name=self.name keys_to_gen = set(keys_to_gen) | set(keys_to_save) | set(keys_to_return) keys_to_gen = sorted(list(keys_to_gen),key=lambda x: x.count('_')) self.log('keys_to_gen =',keys_to_gen) key_types = dict([(k,key_types[k]) for k in keys_to_gen]) self.log('key_types =',key_types) # get decryptor keys! keychain = self.gen_keys_from_types(key_types,passphrase=passphrase) self.log('keychain 1 =',keychain) # gen encrypted keys! keychain = self.gen_encr_keys(keychain,keys_to_gen,passphrase=passphrase) self.log('keychain 2 =',keychain) # save keys! # get URI id to save under (except for pubkeys, accessible by name) uri_id,keys_saved,keychain = self.save_keychain(name,keychain,keys_to_save) self.log('uri_id =',uri_id) self.log('keys_saved =',keys_saved) self.log('keychain =',keychain) # return keys! keys_returned = self.return_keychain(keychain,keys_to_return) return {'uri_id':uri_id,'_keychain':keys_returned} def return_keychain(self,keychain,keys_to_return=None): keychain_toreturn = {} if not keys_to_return: keys_to_return = list(keychain.keys()) for key in keys_to_return: if key in keychain: keychain_toreturn[key]=keychain[key] return keychain_toreturn def save_uri_as_qrcode(self,name=None,uri_id=None,odir=None): if not uri_id: uri_id = get_random_id() + get_random_id() uri_id = self.uri_id if not uri_id and not self.uri_id: raise KomradeException('Need URI id to save!') # gen import pyqrcode qr = pyqrcode.create(uri_id) if not odir: odir = PATH_QRCODES ofnfn = os.path.join(odir,self.name+'.png') qr.png(ofnfn,scale=5) self.log('>> saved:',ofnfn) def save_keychain(self,name,keychain,keys_to_save=None,uri_id=None): if not keys_to_save: keys_to_save = list(keychain.keys()) if not uri_id: uri_id = b64encode(keychain['pubkey'].data).decode() #uri_id = get_random_id() + get_random_id() self.log(f'SAVING KEYCHAIN FOR {name} under URI {uri_id}') self._uri_id = uri_id # filter for transfer for k,v in keychain.items(): if issubclass(type(v),KomradeKey): v=v.data keychain[k]=v # save keychain keys_saved_d={} for keyname in keys_to_save: if not '_' in keyname and keyname!='pubkey': raise KomradeException('there is no private property in a socialist network! all keys must be split between komrades') if keyname in keychain: # uri = uri_id uri = uri_id if keyname!='pubkey' else name self.crypt_keys.set(uri,keychain[keyname],prefix=f'/{keyname}/') keys_saved_d[keyname] = keychain[keyname] # save pubkey as QR if not 'pubkey' in keys_saved_d: self.log('did not save pubkey in crypt, storing as QR...') self.save_uri_as_qrcode(name=name, uri_id=uri_id, odir=PATH_QRCODES) return (uri_id,keys_saved_d,keychain) def assemble(self,_keychain): # last minute assemblies? encr_keys = [k for k in _keychain if k.endswith('_encr')] for ekey in encr_keys: eval=_keychain[ekey] if not eval: continue unencrkey = ekey[:-len('_encr')] if unencrkey in _keychain: continue decrkey = unencrkey+'_decr' if decrkey not in _keychain: continue dval=_keychain[decrkey] if not dval: continue # self.log(ekey,decrkey,'??') # self.log(eval,dval,'????') new_val = self.assemble_key(eval,dval) # self.log('!!#!',new_val) if new_val: _keychain[unencrkey] = new_val return _keychain def assemble_key(self, key_encr, key_decr, key_encr_name=None, key_decr_name=None): # self.log(f'assembling key: {key_decr} decrypting {key_encr}') # need the encrypted half if not key_encr: # self.log('!! encrypted half not given') return if not key_decr: if self.passphrase: key_decr = self.passphrase else: # self.log('!! decryptor half not given') return # need some way to regenerate the decryptor decr_cell = self.get_cell(key_decr) # need the decryptor half if not decr_cell: # self.log('!! decryptor cell not regenerable') return # decrypt! try: # self.log(f'>> decrypting {key_encr_name} with {key_decr_name}\n({key_encr} with cell {decr_cell}') key = decr_cell.decrypt(key_encr) # self.log('assembled_key built:',key) return key except ThemisError as e: # self.log('!! decryption failed:',e) return def get_cell(self, str_or_key_or_cell): # self.log('getting decr cell for',str_or_key_or_cell) if type(str_or_key_or_cell)==SCellSeal: return str_or_key_or_cell elif type(str_or_key_or_cell)==str: return SCellSeal(passphrase=str_or_key_or_cell) elif type(str_or_key_or_cell)==bytes: return SCellSeal(key=str_or_key_or_cell) # def keychain(self, # passphrase=DEBUG_DEFAULT_PASSPHRASE, # extra_keys={}, # keys_to_gen=KEYMAKER_DEFAULT_KEYS_TO_GEN, # uri_id=None, # **kwargs): # # assemble as many keys as we can! # self.log(f'''keychain( # passphrase={passphrase}, # extra_keys={extra_keys}, # keys_to_gen={keys_to_gen}, # uri_id={uri_id}, # **kwargs = {kwargs} # )''') # if not uri_id: uri_id = self.uri_id # if not uri_id and not self.uri_id: # raise KomradeException('Need URI id to complete finding of keys!') # self.log('getting keychain for uri ID:',uri_id) # # if not force and hasattr(self,'_keychain') and self._keychain: return self._keychain # if passphrase: self.passphrase=passphrase # # start off keychain # _keychain = {**extra_keys, **self._keychain} # self.log('_keychain at start of keychain() =',_keychain) # # find # for keyname in keys_to_gen: # if keyname in _keychain and _keychain[keyname]: continue # # self.log('??',keyname,keyname in self._keychain,'...') # newkey = self.crypt_keys.get(uri_id,prefix=f'/{keyname}/') # if newkey: _keychain[keyname] = newkey # # return # _keychain = self.assemble(_keychain) # self._keychain = _keychain # return _keychain return _keychain if __name__ == '__main__': keymaker = Keymaker('marx69') keychain = keymaker.forge_new_keys() print(keychain)