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568 lines
23 KiB
Python
568 lines
23 KiB
Python
import os,sys; sys.path.append(os.path.abspath(os.path.join(os.path.abspath(os.path.join(os.path.dirname(__file__),'..')),'..')))
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from komrade import *
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from komrade.backend.crypt import *
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from abc import ABC, abstractmethod
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class KomradeKey(ABC):
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@abstractmethod
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def encrypt(self,msg,**kwargs): pass
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@abstractmethod
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def decrypt(self,msg,**kwargs): pass
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@abstractmethod
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def data(self): pass
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class KomradeSymmetricKey(KomradeKey):
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@property
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def cell(self):
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if not hasattr(self,'_cell'):
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if hasattr(self,'passphrase') and self.passphrase:
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self._cell = SCellSeal(passphrase=self.passphrase)
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elif hasattr(self,'key') and self.key:
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self._cell = SCellSeal(key=self.key)
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return self._cell
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def encrypt(self,msg,**kwargs):
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if issubclass(type(msg), KomradeKey): msg=msg.data
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return self.cell.encrypt(msg,**kwargs)
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def decrypt(self,msg,**kwargs):
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return self.cell.decrypt(msg,**kwargs)
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class KomradeSymmetricKeyWithPassphrase(KomradeSymmetricKey):
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def __init__(self,passphrase=None, why=WHY_MSG):
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self.passphrase=passphrase
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if not self.passphrase:
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self.passphrase=getpass.getpass(why)
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#return self.passphrase
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@property
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def data(self): return KEY_TYPE_SYMMETRIC_WITH_PASSPHRASE.encode('utf-8')
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class KomradeSymmetricKeyWithoutPassphrase(KomradeSymmetricKey):
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def __init__(self):
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self.key = GenerateSymmetricKey()
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@property
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def data(self): return self.key
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class KomradeAsymmetricKey(KomradeKey):
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def __init__(self,pubkey,privkey):
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self.pubkey=pubkey
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self.privkey=privkey
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def encrypt(self,msg,pubkey=None,privkey=None):
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if issubclass(type(msg), KomradeKey): msg=msg.data
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pubkey=pubkey if pubkey else self.pubkey
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privkey=privkey if privkey else self.privkey
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return SMessage(privkey,pubkey).wrap(msg)
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def decrypt(self,msg,pubkey=None,privkey=None):
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pubkey=pubkey if pubkey else self.pubkey
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privkey=privkey if privkey else self.privkey
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return SMessage(privkey,pubkey).unwrap(msg)
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@property
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def data(self): return self.key
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class KomradeAsymmetricPublicKey(KomradeAsymmetricKey):
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@property
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def key(self): return self.pubkey
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class KomradeAsymmetricPrivateKey(KomradeAsymmetricKey):
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@property
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def key(self): return self.privkey
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class Keymaker(Logger):
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def __init__(self,name=None,passphrase=None, path_crypt_keys=None, path_crypt_data=None):
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self.name=name
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self.passphrase=passphrase
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self.path_crypt_keys=path_crypt_keys
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self.path_crypt_data=path_crypt_data
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for k in KEYNAMES:
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func = lambda: self.keychain().get(k)
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setattr(self,'_'+k,func)
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### BASE STORAGE
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@property
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def crypt_keys(self):
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if not hasattr(self,'_crypt_keys'):
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self._crypt_keys = Crypt(fn=self.path_crypt_keys)
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return self._crypt_keys
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@property
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def crypt_keys_mem(self):
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if not hasattr(self,'_crypt_keys_mem'):
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self._crypt_keys_mem = CryptMemory()
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return self._crypt_keys_mem
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@property
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def crypt_data(self):
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if not hasattr(self,'_crypt_data'):
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self._crypt_data = Crypt(fn=self.path_crypt_data)
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return self._crypt_data
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### STARTING WITH MOST ABSTRACT
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def findkey(self, keyname, keychain={}, uri=None):
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self.log(f'looking for key {keyname}, in keychain {keychain.keys()} or under crypt uri {uri}')
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# look in keychain, then in crypt, for this key
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given_key = keychain.get(keyname)
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if given_key:
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self.log(f'{keyname} found in keychain: {given_key}')
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return given_key
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found_key = self.crypt_keys.get(uri,prefix=f'/{keyname}/')
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if found_key:
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self.log(f'{keyname} found in crypt: {given_key}')
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return found_key
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self.log(f'{keyname} not found!!')
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def getkey(self, keyname, keychain={}, uri=None):
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self.log(f'keyname={keyname}, keychain={keychain.keys()}, uri={uri}')
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# 1) I already have this key stored in either the keychain or the crypt; return straight away
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key = self.findkey(keyname, keychain, uri)
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if key:
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self.log(f'>> I have {key} already, returning')
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return key
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## 2) I can assemble the key
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self.log(f'assembling key: {keyname}_encr + {keyname}_decr')
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key_encr = self.findkey(keyname+'_encr', keychain,uri)
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key_decr = self.findkey(keyname+'_decr', keychain, uri)
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key = self.assemble_key(key_encr, key_decr)
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return key
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def get_cell(self, str_or_key_or_cell):
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self.log('getting decr cell for',str_or_key_or_cell)
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if type(str_or_key_or_cell)==SCellSeal:
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return str_or_key_or_cell
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elif type(str_or_key_or_cell)==str:
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return SCellSeal(passphrase=str_or_key_or_cell)
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elif type(str_or_key_or_cell)==bytes:
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return SCellSeal(key=str_or_key_or_cell)
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def assemble_key(self, key_encr, key_decr):
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self.log(f'assembling key: {key_decr} decrypting {key_encr}')
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# need the encrypted half
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if not key_encr:
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self.log('!! encrypted half not given')
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return
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if not key_decr:
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if self.passphrase:
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key_decr = self.passphrase
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else:
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self.log('!! decryptor half not given')
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return
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# need some way to regenerate the decryptor
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decr_cell = self.get_cell(key_decr)
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# need the decryptor half
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if not decr_cell:
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self.log('!! decryptor cell not regenerable')
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return
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# decrypt!
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try:
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self.log(f'>> decrypting {key_encr} with cell {decr_cell}')
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key = decr_cell.decrypt(key_encr)
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self.log('assembled_key built:',key)
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return key
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except ThemisError as e:
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self.log('!! decryption failed:',e)
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# Concrete keys
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## (1) Final keys
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def pubkey(self, **kwargs):
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return self.getkey(keyname='pubkey',uri=self.name,**kwargs)
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def privkey(self, **kwargs):
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return self.getkey(keyname='privkey',uri=self.pubkey(**kwargs),**kwargs)
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def adminkey(self, **kwargs):
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return self.getkey(keyname='adminkey',uri=self.privkey(**kwargs),**kwargs)
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## (1-X) Encrypted halves
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def pubkey_encr(self, **kwargs):
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return self.getkey(uri=self.name,keyname='pubkey_encr',**kwargs)
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def privkey_encr(self, **kwargs):
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return self.getkey(uri=self.pubkey(**kwargs),keyname='privkey_encr',**kwargs)
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def adminkey_encr(self, **kwargs):
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return self.getkey(uri=self.privkey(**kwargs),keyname='adminkey_encr',**kwargs)
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## (1-Y) Decrpytor halves
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def pubkey_decr(self, **kwargs):
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return self.getkey(uri=self.name,keyname='pubkey_decr',**kwargs)
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def privkey_decr(self, **kwargs):
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return self.getkey(uri=self.pubkey(**kwargs),keyname='privkey_decr',**kwargs)
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def adminkey_decr(self, **kwargs):
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return self.getkey(uri=self.privkey(**kwargs),keyname='adminkey_decr',**kwargs)
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## Second halving!
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## (1-X-X)
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def pubkey_encr_encr(self, **kwargs):
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return self.getkey(uri=self.name,keyname='pubkey_encr_encr',**kwargs)
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def privkey_encr_encr(self, **kwargs):
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return self.getkey(uri=self.pubkey_encr(**kwargs),keyname='privkey_encr_encr',**kwargs)
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def adminkey_encr_encr(self, **kwargs):
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return self.getkey(uri=self.privkey_encr(**kwargs),keyname='adminkey_encr_encr',**kwargs)
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## (1-X-Y)
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def pubkey_encr_decr(self, **kwargs):
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return self.getkey(uri=self.name,keyname='pubkey_encr_decr',**kwargs)
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def privkey_encr_decr(self, **kwargs):
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return self.getkey(uri=self.pubkey_encr(**kwargs),keyname='privkey_encr_decr',**kwargs)
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def adminkey_encr_decr(self, **kwargs):
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return self.getkey(uri=self.privkey_encr(**kwargs),keyname='adminkey_encr_decr',**kwargs)
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## (1-Y-X)
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def pubkey_decr_encr(self, **kwargs):
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return self.getkey(uri=self.name,keyname='pubkey_decr_encr',**kwargs)
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def privkey_decr_encr(self, **kwargs):
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return self.getkey(uri=self.pubkey_decr(**kwargs),keyname='privkey_decr_encr',**kwargs)
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def adminkey_decr_encr(self, **kwargs):
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return self.getkey(uri=self.privkey_decr(**kwargs),keyname='adminkey_decr_encr',**kwargs)
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## (1-Y-Y)
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def pubkey_decr_decr(self, **kwargs):
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return self.getkey(uri=self.name,keyname='pubkey_decr_decr',**kwargs)
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def privkey_decr_decr(self, **kwargs):
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return self.getkey(uri=self.pubkey_decr(**kwargs),keyname='privkey_decr_decr',**kwargs)
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def adminkey_decr_decr(self, **kwargs):
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return self.getkey(uri=self.privkey_decr(**kwargs),keyname='adminkey_decr_decr',**kwargs)
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# convenience functions
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# Concrete keys
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@property
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def pubkey_(self): return self.keychain().get('pubkey')
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@property
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def privkey_(self, **kwargs): return self.keychain().get('privkey')
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@property
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def adminkey_(self, **kwargs): return self.keychain().get('adminkey')
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## (1-X) Encrypted halves
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@property
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def pubkey_encr_(self, **kwargs):return self.keychain().get('pubkey_encr')
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@property
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def privkey_encr_(self, **kwargs): return self.keychain().get('privkey_encr')
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@property
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def adminkey_encr_(self, **kwargs): return self.keychain().get('adminkey_encr')
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## (1-Y) Decrpytor halves
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@property
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def pubkey_decr_(self, **kwargs): return self.keychain().get('pubkey_decr')
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@property
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def privkey_decr_(self, **kwargs): return self.keychain().get('privkey_decr')
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@property
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def adminkey_decr_(self, **kwargs): return self.keychain().get('adminkey_decr')
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## Second halving!
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## (1-X-X)
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@property
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def pubkey_encr_encr_(self, **kwargs): return self.keychain().get('pubkey_encr_encr')
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@property
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def privkey_encr_encr_(self, **kwargs): return self.keychain().get('privkey_encr_encr')
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@property
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def adminkey_encr_encr_(self, **kwargs): return self.keychain().get('adminkey_encr_encr')
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## (1-X-Y)
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@property
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def pubkey_encr_decr_(self, **kwargs): return self.keychain().get('pubkey_encr_decr')
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@property
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def privkey_encr_decr_(self, **kwargs): return self.keychain().get('privkey_encr_decr')
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@property
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def adminkey_encr_decr_(self, **kwargs): return self.keychain().get('adminkey_encr_decr')
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## (1-Y-X)
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@property
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def pubkey_decr_encr_(self, **kwargs): return self.keychain().get('pubkey_decr_encr')
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@property
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def privkey_decr_encr_(self, **kwargs): return self.keychain().get('privkey_decr_encr')
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@property
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def adminkey_decr_encr_(self, **kwargs): return self.keychain().get('adminkey_decr_encr')
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## (1-Y-Y)
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@property
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def pubkey_decr_decr_(self, **kwargs): return self.keychain().get('pubkey_decr_decr')
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@property
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def privkey_decr_decr_(self, **kwargs): return self.keychain().get('privkey_decr_decr')
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@property
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def adminkey_decr_decr_(self, **kwargs): return self.keychain().get('adminkey_decr_decr')
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# Get key de-cryptors
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def genkey_pass_keycell(self,pass_phrase,q_name='Read permissions?'):
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if pass_phrase is None:
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pass_key = GenerateSymmetricKey()
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pass_cell = SCellSeal(key=pass_key)
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else:
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if pass_phrase is True: pass_phrase=getpass.getpass(f'Enter pass phrase [{q_name}]: ')
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pass_key = None
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pass_cell = SCellSeal(passphrase=pass_phrase)
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self.log(f'pass_key [{q_name}] <--',pass_key)
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self.log(f'pass_cell [{q_name}] <--',pass_cell)
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return (pass_key, pass_cell)
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def exists(self):
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return self.crypt_keys.exists(self.name,prefix='/pubkey_encr/') or self.crypt_keys.exists(self.name,prefix='/pubkey_decr/') or self.crypt_keys.exists(self.name,prefix='/pubkey/')
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### CREATING KEYS
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def get_new_keys(self):
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raise KomradeException('Every keymaker must make their own get_new_keys() !')
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def gen_keys_from_types(self,key_types,passphrase=None):
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asymmetric_pubkey=None
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asymmetric_privkey=None
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keychain = {}
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for key_name,key_type_desc in key_types.items():
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if key_type_desc in {KEY_TYPE_ASYMMETRIC_PUBKEY,KEY_TYPE_ASYMMETRIC_PRIVKEY}:
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if not asymmetric_privkey or not asymmetric_pubkey:
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keypair = GenerateKeyPair(KEY_PAIR_TYPE.EC)
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asymmetric_privkey = keypair.export_private_key()
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asymmetric_pubkey = keypair.export_public_key()
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if key_type_desc==KEY_TYPE_ASYMMETRIC_PRIVKEY:
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keychain[key_name] = KomradeAsymmetricPrivateKey(asymmetric_pubkey,asymmetric_privkey)
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elif key_type_desc==KEY_TYPE_ASYMMETRIC_PUBKEY:
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keychain[key_name] = KomradeAsymmetricPublicKey(asymmetric_pubkey,asymmetric_privkey)
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elif key_type_desc==KEY_TYPE_SYMMETRIC_WITHOUT_PASSPHRASE:
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keychain[key_name]=KomradeSymmetricKeyWithoutPassphrase()
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elif key_type_desc==KEY_TYPE_SYMMETRIC_WITH_PASSPHRASE:
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if not passphrase and not self.passphrase: self.passphrase=getpass.getpass(WHY_MSG)
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passphrase=passphrase if passphrase else self.passphrase
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keychain[key_name]=KomradeSymmetricKeyWithPassphrase(passphrase=passphrase)
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return keychain
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def forge_new_keys(self,
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name=None,
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keys_to_save = KEYMAKER_DEFAULT_KEYS_TO_SAVE,
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keys_to_return = KEYMAKER_DEFAULT_KEYS_TO_RETURN,
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keys_to_gen = KEYMAKER_DEFAULT_KEYS_TO_GEN,
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key_types = KEYMAKER_DEFAULT_KEY_TYPES):
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self.log('forging new keys...',name,self.name)
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self.log('keys_to_save:',keys_to_save)
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self.log('keys_to_return',keys_to_return)
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# stop
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if not name: name=self.name
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keys_to_gen = set(keys_to_gen) | set(keys_to_save) | set(keys_to_return)
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keys_to_gen = sorted(list(keys_to_gen),key=lambda x: x.count('_'))
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self.log('keys_to_gen =',keys_to_gen)
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key_types = dict([(k,key_types[k]) for k in keys_to_gen])
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self.log('key_types =',key_types)
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keychain = self.gen_keys_from_types(key_types)
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self.log('keychain =',keychain)
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self.log('!!!!',keychain)
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# stop
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#keychain_tosave = {}
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#keychain_toreturn = {}
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self.log('keys_to_save =',keys_to_save)
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self.log('keys_to_return =',keys_to_return)
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for key_name in keys_to_gen:
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if key_name.endswith('_encr') and key_name not in keychain:
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# encrypt it with the associated decr
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name_of_what_to_encrypt = key_name[:-len('_encr')]
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the_key_to_encrypt_it_with = name_of_what_to_encrypt + '_decr'
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if the_key_to_encrypt_it_with in keychain and name_of_what_to_encrypt in keychain:
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_key_decr = keychain[the_key_to_encrypt_it_with]
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_key = keychain[name_of_what_to_encrypt]
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self.log(f'about to encrypt key {name_of_what_to_encrypt}, using {the_key_to_encrypt_it_with}, which is a type {key_types[the_key_to_encrypt_it_with]} and has value {keychain[the_key_to_encrypt_it_with]}')
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_key_encr = _key_decr.encrypt(_key)
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self.log(f'{_key}\n-- encrypting ----->\n{_key_encr}')
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keychain[key_name]=_key_encr
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self.log('once more, with encryption!',keychain)
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# filter for transfer
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for k,v in keychain.items():
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if issubclass(type(v),KomradeKey):
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v=v.data
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v=b64encode(v)
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keychain[k]=v
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self.log('-->',v)
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# stop
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# keychain_tosave = dict([(k,keychain[k]) for k in keys_to_save if k in keychain])
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# for k,v in keychain_tosave.items():
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if 'pubkey' in keys_to_save or 'privkey' in keys_to_save or 'adminkey' in keys_to_save:
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raise KomradeException('there is no private property in a socialist network! all keys must be split between komrades')
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### SAVE ENCRYPTED KEYS?
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if 'pubkey_encr' in keys_to_save:
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self.crypt_keys.set(name,keychain['pubkey_encr'],prefix='/pubkey_encr/')
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if 'privkey_encr' in keys_to_save:
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self.crypt_keys.set(keychain['pubkey'],keychain['privkey_encr'],prefix='/privkey_encr/')
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if 'adminkey_encr' in keys_to_save:
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self.crypt_keys.set(keychain['privkey'],keychain['adminkey_encr'],prefix='/adminkey_encr/')
|
|
|
|
# save decrypted keys?
|
|
if 'pubkey_decr' in keys_to_save:
|
|
self.crypt_keys.set(name,keychain['pubkey_decr'],prefix='/pubkey_decr/')
|
|
if 'privkey_decr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['pubkey'],keychain['privkey_decr'],prefix='/privkey_decr/')
|
|
if 'adminkey_decr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['privkey'],keychain['adminkey_decr'],prefix='/adminkey_decr/')
|
|
|
|
|
|
|
|
if 'pubkey_encr_encr' in keys_to_save:
|
|
self.crypt_keys.set(name,keychain['pubkey_decr_encr'],prefix='/pubkey_decr_encr/')
|
|
if 'privkey_encr_encr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['pubkey_decr'],keychain['privkey_decr_encr'],prefix='/privkey_decr_encr/')
|
|
if 'adminkey_encr_encr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['privkey_decr'],keychain['adminkey_decr_encr'],prefix='/adminkey_decr_encr/')
|
|
if 'pubkey_decr_encr' in keys_to_save:
|
|
self.crypt_keys.set(name,keychain['pubkey_decr_encr'],prefix='/pubkey_decr_encr/')
|
|
if 'privkey_decr_encr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['pubkey_decr'],keychain['privkey_decr_encr'],prefix='/privkey_decr_encr/')
|
|
if 'adminkey_decr_encr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['privkey_decr'],keychain['adminkey_decr_encr'],prefix='/adminkey_decr_encr/')
|
|
|
|
if 'pubkey_decr_decr' in keys_to_save:
|
|
self.crypt_keys.set(name,keychain['pubkey_decr_decr'],prefix='/pubkey_decr_decr/')
|
|
if 'privkey_decr_decr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['pubkey_decr'],keychain['privkey_decr_decr'],prefix='/privkey_decr_decr/')
|
|
if 'adminkey_decr_decr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['privkey_decr'],keychain['adminkey_decr_decr'],prefix='/adminkey_decr_decr/')
|
|
if 'pubkey_decr_decr' in keys_to_save:
|
|
self.crypt_keys.set(name,keychain['pubkey_decr_decr'],prefix='/pubkey_decr_decr/')
|
|
if 'privkey_decr_decr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['pubkey_decr'],keychain['privkey_decr_decr'],prefix='/privkey_decr_decr/')
|
|
if 'adminkey_decr_decr' in keys_to_save:
|
|
self.crypt_keys.set(keychain['privkey_decr'],keychain['adminkey_decr_decr'],prefix='/adminkey_decr_decr/')
|
|
|
|
|
|
|
|
keychain_toreturn = {}
|
|
for key in keys_to_return:
|
|
if key in keychain:
|
|
print('adding',key,'to returned keychain')
|
|
keychain_toreturn[key]=keychain[key]
|
|
|
|
return keychain_toreturn
|
|
|
|
|
|
|
|
@property
|
|
def cell_dblencr(self):
|
|
if not hasattr(self,'_cell_dblencr'):
|
|
self._dbl_encr = get_cell_dblencr()
|
|
return self._dbl_encr
|
|
|
|
def get_cell_dblencr(self,passphrase=None):
|
|
if not passphrase:
|
|
if self.passphrase:
|
|
passphrase=self.passphrase
|
|
else:
|
|
self.passphrase=passphrase=getpass.getpass('Forge the password of memory: ')
|
|
cell = SCellSeal(passphrase=passphrase)
|
|
return cell
|
|
|
|
|
|
def lock_new_keys(self,
|
|
keychain,
|
|
passphrase=None,
|
|
save_encrypted = True, return_encrypted = False,
|
|
save_decrypted = False, return_decrypted = True):
|
|
# we're not going to store the decryptor keys directly though
|
|
|
|
|
|
# encrypt the decryptor keys
|
|
pubkey_decr_encr = cell.encrypt(keychain['pubkey_decr'])
|
|
privkey_decr_encr = cell.encrypt(keychain['privkey_decr'])
|
|
adminkey_decr_encr = cell.encrypt(keychain['adminkey_decr'])
|
|
|
|
# set to crypt and keychain
|
|
if save_decrypted:
|
|
self.crypt_keys.set(self.name,pubkey_decr_encr,prefix='/pubkey_decr_encr/')
|
|
self.crypt_keys.set(keychain['pubkey_decr'],privkey_decr_encr,prefix='/privkey_decr_encr/')
|
|
#keychain['privkey_decr_encr']=privkey_decr_encr
|
|
|
|
self.crypt_keys.set(keychain['privkey_decr'],adminkey_decr_encr,prefix='/adminkey_decr_encr/')
|
|
#keychain['adminkey_decr_encr']=adminkey_decr_encr
|
|
|
|
# store decryption keys if not passworded?
|
|
pub_ddk,priv_ddk,admin_ddk=[x+'key_decr_decr_key' for x in ['pub','priv','admin']]
|
|
if pub_ddk in keychain:
|
|
self.crypt_keys.set(self.name, keychain[pub_ddk], prefix=f'/{pub_ddk}/')
|
|
if priv_ddk in keychain:
|
|
self.crypt_keys.set(self.name, keychain[priv_ddk], prefix=f'/{priv_ddk}/')
|
|
if admin_ddk in keychain:
|
|
self.crypt_keys.set(self.name, keychain[admin_ddk], prefix=f'/{admin_ddk}/')
|
|
|
|
# # return protected keychain
|
|
# todel = ['pubkey_decr','privkey_decr','adminkey_decr']
|
|
# for x in todel:
|
|
# if x in keychain:
|
|
# del keychain[x]
|
|
|
|
# # add encr versions
|
|
# keychain
|
|
|
|
# del keychain['pubkey_decr']
|
|
# del keychain['privkey_decr']
|
|
# del keychain['adminkey_decr']
|
|
|
|
|
|
# return ()
|
|
return passphrase
|
|
|
|
# def load_concrete_keychain():
|
|
# keychain = {}
|
|
# for keyname in KEYNAMES:
|
|
# keychain=self.findkey(keyname, keychain, uri)
|
|
|
|
def keychain(self,passphrase=None,force=False,**kwargs):
|
|
# assemble as many keys as we can!
|
|
if not force and hasattr(self,'_keychain') and self._keychain: return self._keychain
|
|
if passphrase: self.passphrase=passphrase
|
|
|
|
|
|
_keychain = {}
|
|
|
|
# am I a builtin one?
|
|
self.log('hello///',self.name,self.name in BUILTIN_KEYCHAIN)
|
|
if self.name in BUILTIN_KEYCHAIN:
|
|
for k,v in BUILTIN_KEYCHAIN[self.name].items():
|
|
_keychain[k]=v
|
|
|
|
self.log('_keychain',_keychain)
|
|
# stop
|
|
|
|
for keyname in reversed(KEYNAMES+KEYNAMES):
|
|
self.log('??',keyname,'...')
|
|
if hasattr(self,keyname):
|
|
method=getattr(self,keyname)
|
|
res=method(keychain=_keychain, **kwargs)
|
|
self.log('res <--',res)
|
|
if res:
|
|
_keychain[keyname]=res
|
|
return _keychain
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
keymaker = Keymaker('marx69')
|
|
keychain = keymaker.forge_new_keys()
|
|
|
|
print(keychain) |