mirror of
https://github.com/ComradCollective/Comrad
synced 2024-11-17 21:25:37 +00:00
649 lines
23 KiB
Python
649 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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# common external imports
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from pythemis.skeygen import KEY_PAIR_TYPE, GenerateKeyPair
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from pythemis.smessage import SMessage, ssign, sverify
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from pythemis.skeygen import GenerateSymmetricKey
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from pythemis.scell import SCellSeal
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from pythemis.exception import ThemisError
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class KomradeKey(ABC,Logger):
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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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@property
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def data_b64(self):return b64encode(self.data) if type(self.data)==bytes else self.data.data_b64
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@property
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def data_b64_s(self):
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return self.data_b64.decode()
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@property
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def discreet(self): return make_key_discreet(self.data)
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def __str__(self):
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return repr(self)
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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=hasher(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 hasattr(msg,'data'): msg=msg.data
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# print('??? dec',msg,kwargs)
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return self.cell.encrypt(msg,**kwargs)
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def decrypt(self,msg,**kwargs):
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if hasattr(msg,'data'): msg=msg.data
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# print('??? dec',msg,kwargs)
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try:
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return self.cell.decrypt(msg,**kwargs)
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except TypeError:
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return self.cell.decrypt(msg.data,**kwargs)
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def getpass_status(passphrase=None):
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while not passphrase:
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passphrase1 = getpass(f'@Keymaker: What is a *memorable* pass word or phrase? Do not write it down.\n@{name}: ')
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passphrase2 = getpass(f'@Keymaker: Could you repeat that?')
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if passphrase1!=passphrase2:
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self.status('@Keymaker: Those passwords didn\'t match. Please try again.',clear=False,pause=False)
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else:
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return passphrase1
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# get_pass_func = getpass_status if SHOW_STATUS else getpass
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from getpass import getpass
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class KomradeSymmetricKeyWithPassphrase(KomradeSymmetricKey):
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def hash(self,x): return self.crypt_keys.hash(x)
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def __init__(self,passphrase=DEBUG_DEFAULT_PASSPHRASE, why=WHY_MSG):
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if not passphrase:
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# raise KomradeException
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self.passphrase=getpass(why)
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else:
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self.passphrase=passphrase
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# if passphrase: self.passphrase=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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def __repr__(self): return f'[Symmetric Key] (generated by password)'
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class KomradeSymmetricKeyWithoutPassphrase(KomradeSymmetricKey):
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def __init__(self,key=None):
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self.key = GenerateSymmetricKey() if not key else key
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@property
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def data(self): return self.key
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def __repr__(self): return f'[Symmetric Key]\n ({self.discreet})'
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class KomradeAsymmetricKey(KomradeKey):
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def __init__(self,pubkey=None,privkey=None):
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if not pubkey or not privkey:
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keypair = GenerateKeyPair(KEY_PAIR_TYPE.EC)
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privkey = keypair.export_private_key()
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pubkey = keypair.export_public_key()
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self.pubkey=pubkey
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self.privkey=privkey
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self.privkey_obj = KomradeAsymmetricPrivateKey(privkey,pubkey)
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self.pubkey_obj = KomradeAsymmetricPublicKey(pubkey,privkey)
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def encrypt(self,msg,pubkey=None,privkey=None):
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if issubclass(type(msg), KomradeKey) or issubclass(type(msg), KomradeEncryptedKey): 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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if issubclass(type(msg), KomradeKey) or issubclass(type(msg), KomradeEncryptedKey): 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.data,pubkey.data).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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def __init__(self,pubkey,privkey=None):
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self.pubkey=pubkey
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self.privkey=privkey
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@property
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def key(self): return self.pubkey
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@property
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def data(self): return self.pubkey
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def __repr__(self): return f'''[Asymmetric Public Key]\n ({self.data_b64.decode()})'''
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class KomradeAsymmetricPrivateKey(KomradeAsymmetricKey):
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def __init__(self,privkey,pubkey=None):
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self.pubkey=pubkey
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self.privkey=privkey
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@property
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def data(self): return self.privkey
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@property
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def key(self): return self.privkey
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def __repr__(self): return f'''[Asymmetric Private Key]\n ({self.discreet})'''
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def make_key_discreet(data,chance_unredacted=0.25):
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import random
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if not data: return '?'
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if not isBase64(data): data=b64encode(data)
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key=data.decode()
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return ''.join((k if random.random()<chance_unredacted else '-') for k in key)
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# return ''.join((k if not i%6 or not i%3 else '-') for i,k in enumerate(key))
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def make_key_discreet_str(string,chance_unredacted=0.25):
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import random
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if not string: return '?'
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return ''.join((k if random.random()<chance_unredacted else '-') for k in string)
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def make_key_discreet1(data,len_start=10,len_end=10,ellipsis='.',show_len=True):
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if not data: return '?'
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if not isBase64(data): data=b64encode(data)
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data=data.decode()
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amt_missing = len(data) - len_start - len_end
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dstr = data[:len_start] + (ellipsis*amt_missing)
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if len_end: dstr+=data[-len_end:]
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return f'{dstr}' #' (+{len(data)-len_start-len_end})'
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class KomradeEncryptedKey(Logger):
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def __init__(self,data): self.data=data
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@property
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def data_b64(self): return b64encode(self.data).decode()
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def __repr__(self): return f'[Encrypted Key]\n ({self.discreet})'
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@property
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def discreet(self): return make_key_discreet(self.data)
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def __str__(self):
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return repr(self)
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class KomradeEncryptedAsymmetricPrivateKey(KomradeEncryptedKey):
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def __repr__(self): return f'[Encrypted Asymmetric Private Key]\n ({self.discreet})'
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class KomradeEncryptedAsymmetricPublicKey(KomradeEncryptedKey):
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def __repr__(self): return f'[Encrypted Asymmetric Public Key]\n ({self.discreet})'
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class KomradeEncryptedSymmetricKey(KomradeEncryptedKey):
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def __repr__(self): return f'[Encrypted Symmetric Key]\n ({self.discreet})'
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KEYMAKER_DEFAULT_KEY_TYPES = {
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'pubkey':KomradeAsymmetricPublicKey,
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'privkey':KomradeAsymmetricPrivateKey,
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'adminkey':KomradeSymmetricKeyWithoutPassphrase,
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'pubkey_decr':KomradeSymmetricKeyWithoutPassphrase,
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'privkey_decr':KomradeSymmetricKeyWithPassphrase,
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'adminkey_decr':KomradeSymmetricKeyWithPassphrase,
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'pubkey_decr_decr':KomradeSymmetricKeyWithoutPassphrase,
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'privkey_decr_decr':KomradeSymmetricKeyWithPassphrase,
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'adminkey_decr_decr':KomradeSymmetricKeyWithPassphrase,
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'pubkey_encr_decr':KomradeSymmetricKeyWithoutPassphrase,
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'privkey_encr_decr':KomradeSymmetricKeyWithPassphrase,
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'adminkey_encr_decr':KomradeSymmetricKeyWithPassphrase,
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# encrypted keys
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'pubkey_encr':KomradeEncryptedAsymmetricPublicKey,
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'privkey_encr':KomradeEncryptedAsymmetricPrivateKey,
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'adminkey_encr':KomradeEncryptedSymmetricKey,
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'pubkey_encr_encr':KomradeEncryptedSymmetricKey,
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'privkey_encr_encr':KomradeEncryptedSymmetricKey,
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'adminkey_encr_encr':KomradeEncryptedSymmetricKey,
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'pubkey_decr_encr':KomradeEncryptedSymmetricKey,
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'privkey_decr_encr':KomradeEncryptedSymmetricKey,
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'adminkey_decr_encr':KomradeEncryptedSymmetricKey
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}
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def get_key_obj(keyname,data,passphrase=None,key_types=KEYMAKER_DEFAULT_KEY_TYPES):
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return key_types[keyname](data)
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class Keymaker(Logger):
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def __init__(self,
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name=None,
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passphrase=DEBUG_DEFAULT_PASSPHRASE,
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uri_id=None,
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keychain={},
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path_crypt_keys=PATH_CRYPT_CA_KEYS,
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path_crypt_data=PATH_CRYPT_CA_DATA):
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# set defaults
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self.name=name
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self._uri_id=uri_id
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self._pubkey=None
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self._keychain=keychain
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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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def find_pubkey(self,name=None):
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if not name: name=self.name
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if 'pubkey' in self._keychain and self._keychain['pubkey']:
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return self._keychain['pubkey']
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res = self.crypt_keys.get(name, prefix='/pubkey/')
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# self.log('result from crypt for name:',res)
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# if res: return res
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res = self.load_qr(self.name)
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# if res: return res
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if not res: return
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if type(res)==str: res=res.encode()
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if isBase64(res): res=b64decode(res)
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return res
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# self.log('I don\'t know my public key! Do I need to register?')
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# raise KomradeException(f'I don\'t know my public key!\n{self}\n{self._keychain}')
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# return res
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def find_name(self,pubkey_b64):
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q=pubkey_b64.decode() if type(pubkey_b64)!=str else pubkey_b64
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print('Q?',q)
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res = self.crypt_keys.get(q, prefix='/name/')
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# self.log('result from crypt for name:',res)
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return res
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@property
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def keys(self):
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return sorted(list(self.keychain().keys()))
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@property
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def top_keys(self):
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return [k for k in self.keys if k.count('_')==0]
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def load_keychain_from_bytes(self,keychain):
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for keyname,keyval in keychain.items():
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keychain[keyname] = get_key_obj(keyname,keyval)
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return keychain
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def find_pubkey_and_name(self,name=None,pubkey=None):
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if not pubkey: pubkey = self._keychain.get('pubkey')
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if not name: name = self.name
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if pubkey:
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# print('??',pubkey)
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if hasattr(pubkey,'data'):
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pubkey=pubkey.data_b64
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else:
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pubkey=b64encode(pubkey) if not isBase64(pubkey) else pubkey
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# if name and pubkey:
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# make sure they match
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#assert self.find_pubkey(name) == self.find_name(pubkey)
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# if self.find_pubkey(name) != self.find_name:
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# pass
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# self.log(f'! {name} and {pubkey} do not match?')
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if name and not pubkey:
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pubkey = self.find_pubkey(name)
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elif pubkey and not name:
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self.name = self.find_name(pubkey)
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# else:
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# self.log('error! Neither name nor pubkey! Who am I?')
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# return (None,None)
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if pubkey:
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# self.log('!?!?!?!?',type(pubkey),pubkey)
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pubkey = b64decode(pubkey) if isBase64(pubkey) else pubkey
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pubkey=KomradeEncryptedAsymmetricPublicKey(pubkey)
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self._keychain['pubkey'] = pubkey
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self.name = name
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return (name,pubkey)
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def keychain(self,look_for=KEYMAKER_DEFAULT_ALL_KEY_NAMES,passphrase=None):
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# load existing keychain
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keys = self._keychain
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# make sure we have the pubkey
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name,pubkey = self.find_pubkey_and_name()
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# get uri
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if pubkey:
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uri = pubkey.data_b64
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#uri = b64encode(pubkey) if type(pubkey)==bytes else b64encode(pubkey.encode())
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# get from cache
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for keyname in look_for:
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# print(self.name,'looking for key:',keyname)
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if keyname in keys and keys[keyname]: continue
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key = self.crypt_keys.get(uri,prefix=f'/{keyname}/')
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# print('found in crypt:',key,'for',keyname)
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if key: keys[keyname]=get_key_obj(keyname,key)
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# try to assemble
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keys = self.assemble(self.assemble(keys,passphrase=passphrase),passphrase=passphrase)
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#store to existing set
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self._keychain = keys
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#return
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return 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 pubkey_b64(self): return b64encode(self.pubkey) #self.keychain().get('pubkey')
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@property
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def privkey(self): return self.keychain().get('privkey')
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@property
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def adminkey(self): return self.keychain().get('adminkey')
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@property
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def pubkey_encr(self): return self.keychain().get('pubkey_encr')
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@property
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def privkey_encr(self): return self.keychain().get('privkey_encr')
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@property
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def adminkey_encr(self): return self.keychain().get('adminkey_encr')
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@property
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def pubkey_decr(self): return self.keychain().get('pubkey_decr')
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@property
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def privkey_decr(self): return self.keychain().get('privkey_decr')
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@property
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def adminkey_decr(self): return self.keychain().get('adminkey_decr')
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def load_qr(self,name):
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# try to load?
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contact_fnfn = os.path.join(PATH_QRCODES,name+'.png')
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if not os.path.exists(contact_fnfn): return ''
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# with open(contact_fnfn,'rb') as f: dat=f.read()
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from pyzbar.pyzbar import decode
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from PIL import Image
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res= decode(Image.open(contact_fnfn))[0].data
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# self.log('QR??',res,b64decode(res))
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return b64decode(res)
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@property
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def uri_id(self):
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if not self._uri_id:
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pubkey = self.pubkey #find_pubkey()
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self._uri_id = pubkey.data_b64
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return self._uri_id
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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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def can_log_in(self):
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if not self.pubkey: return False
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if not (self.privkey or self.privkey_encr): return False
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return True
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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=KEYMAKER_DEFAULT_KEY_TYPES,passphrase=DEBUG_DEFAULT_PASSPHRASE):
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"""
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Get new asymmetric/symmetric keys, given a dictionary of constants describing their type
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"""
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# print('bbbbb')
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asymmetric_pubkey=None
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asymmetric_privkey=None
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keychain = {}
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self.log('got key types:',dict_format(key_types))
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# gen keys requested
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for key_name,key_class in key_types.items():
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## asymmetric?
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if issubclass(key_class,KomradeAsymmetricKey):
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if not asymmetric_privkey or asymmetric_pubkey:
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asymmetric_keys = KomradeAsymmetricKey()
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asymmetric_pubkey = asymmetric_keys.pubkey_obj
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asymmetric_privkey = asymmetric_keys.privkey_obj
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if key_class == KomradeAsymmetricPublicKey:
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keychain[key_name]=asymmetric_pubkey
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elif key_class == KomradeAsymmetricPrivateKey:
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keychain[key_name]=asymmetric_privkey
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elif key_class == KomradeSymmetricKeyWithPassphrase:
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keychain[key_name] = KomradeSymmetricKeyWithPassphrase(passphrase)
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else:
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# print('??',key_name,key_class)
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keychain[key_name] = key_class(None)
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self.log('keytypes -> keychain',dict_format(keychain))
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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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passphrase=DEBUG_DEFAULT_PASSPHRASE,
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keys_to_save = KEYMAKER_DEFAULT_KEYS_TO_SAVE_ON_SERVER,
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keys_to_return = KEYMAKER_DEFAULT_KEYS_TO_SAVE_ON_CLIENT,
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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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save_keychain=True,
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return_keychain=True,
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return_all_keys=False):
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# setup
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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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key_types = dict([(k,key_types[k]) for k in keys_to_gen if k])
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if not name: name=self.name
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# show user what's happening
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self.log(f'''
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Keymaker ({self}) is forging new keys for {name}
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''' + (f'''
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* I will save these keys in this crypt: {', '.join(keys_to_save)}
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''' if save_keychain else '') #+ #'''
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# * I will also save this user's pubkey (as b64 URI) to:
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# {self.get_path_qrcode(name=name)}
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# ''' + (f'''
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+ (f'''
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* I will return these keys to you: {', '.join(keys_to_return)}
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''' if return_keychain else '')
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+ f'''
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* I will forge these keys for you: {', '.join(keys_to_gen)}
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* I will be using these key types to do so:
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{dict_format(key_types,tab=4)}
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''')
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# gen decryptor keys!
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keychain = self.gen_keys_from_types(key_types,passphrase=passphrase)
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# gen encrypted keys!
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self.log('I built this keychain v1!',dict_format(keychain,tab=2))
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keychain = self.disassemble(keychain,passphrase=passphrase)
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self.log('I built this keychain!',dict_format(keychain,tab=2))
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self.status('@Keymaker: I ended up building these keys:',keychain)
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# save keys!
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if save_keychain:
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# get URI id to save under (except for pubkeys, accessible by name)
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uri_id,keys_saved_d,keychain = self.save_keychain(name,keychain,keys_to_save)
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self.log(f'Trying to save these keys ({keys_to_save}), I saved this keychain:',dict_format(keys_saved_d,tab=2),'using the generated-from-pubkey URI ID',uri_id)
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# return keys!
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if return_all_keys:
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return keychain
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if return_keychain:
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keys_returned = self.return_keychain(keychain,keys_to_return)
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self.log('I am returning this keychain:',dict_format(keys_returned,tab=2))
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# return (uri_id,keys_returned)
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return keys_returned
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raise KomradeException('What did you want me to do here?')
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def return_keychain(self,keychain,keys_to_return=None):
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keychain_toreturn = {}
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if not keys_to_return: keys_to_return = list(keychain.keys())
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for key in keys_to_return:
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if key in keychain:
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keychain_toreturn[key]=keychain[key]
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return keychain_toreturn
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def get_path_qrcode(self,name=None,dir=None,ext='.png'):
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if not name: name=self.name
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if not dir: dir = PATH_QRCODES
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fnfn = os.path.join(dir,name+ext)
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return fnfn
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@property
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def qr(self): return self.qr_str(data=self.uri_id)
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def qr_str(self,data=None):
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data = self.uri_id if not data else data
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return get_qr_str(data)
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def save_uri_as_qrcode(self,uri_id=None,name=None):
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if not uri_id: uri_id = self.uri_id
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if not uri_id and not self.uri_id: raise KomradeException('Need URI id to save!')
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if not name: name=self.name
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# gen
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import pyqrcode
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qr = pyqrcode.create(uri_id)
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ofnfn = self.get_path_qrcode(name=name)
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qr.png(ofnfn,scale=5)
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self._uri_id = uri_id
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self.log(f'''Saved public key as QR code to:\n{ofnfn}\n\n{self.qr}''')
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return ofnfn
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def save_keychain(self,name,keychain,keys_to_save=None,uri_id=None):
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if not keys_to_save: keys_to_save = list(keychain.keys())
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if not uri_id and 'pubkey' in keychain:
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uri_id = b64encode(keychain['pubkey'].data).decode() #uri_id = get_random_id() + get_random_id()
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# self.log(f'SAVING KEYCHAIN FOR {name} under URI {uri_id}')
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self._uri_id = uri_id
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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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keychain[k]=v
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# save keychain
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keys_saved_d={}
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for keyname in keys_to_save:
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if not '_' in keyname and keyname!='pubkey':
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self.log('there is no private property in a socialist network! all keys must be split between komrades',keyname)
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if keyname in keychain:
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# uri = uri_id
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uri = uri_id if keyname!='pubkey' else name
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if not uri: raise KomradeException('invalid URI! {uri}')
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val = keychain[keyname]
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if issubclass(type(keychain[keyname]), KomradeKey) or issubclass(type(keychain[keyname]), KomradeEncryptedKey):
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val = val.data
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self.crypt_keys.set(uri,val,prefix=f'/{keyname}/')
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keys_saved_d[keyname] = keychain[keyname]
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# save pubkey as QR
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if not 'pubkey' in keys_saved_d:
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# self.log('did not save pubkey in crypt, storing as QR...')
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self.save_uri_as_qrcode(name=name, uri_id=uri_id)
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# set to my keychain right away
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self._keychain = keychain
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return (uri_id,keys_saved_d,keychain)
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def assemble(self,keychain,passphrase=None,key_types=KEYMAKER_DEFAULT_KEY_TYPES,decrypt=True):
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encr_keys = [k for k in keychain.keys() if k.endswith('_encr')]
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for encr_key_name in encr_keys:
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decr_key_name = encr_key_name[:-5] + '_decr'
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unencr_key_name = encr_key_name[:-5]
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# self.log(encr_key_name,decr_key_name,unencr_key_name)
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if decrypt and unencr_key_name in keychain: continue
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if not decr_key_name in keychain:
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keychain[decr_key_name] = KomradeSymmetricKeyWithPassphrase(passphrase=passphrase if passphrase else self.passphrase)
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else:
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continue
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decr_key = keychain.get(decr_key_name)
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# self.log('?',decr_key,decr_key_name,encr_key_name,keychain[encr_key_name])
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try:
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if decrypt:
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encr_key = keychain.get(encr_key_name)
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# self.log(f'about to decrypt {encr_key} with {decr_key}')
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unencr_key = decr_key.decrypt(encr_key.data)
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keychain[unencr_key_name] = get_key_obj(unencr_key_name,unencr_key)
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else:
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# unencr_key = keychain.get(unencr_key_name)
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self.log(f'about to encrypt {unencr_key} with {decr_key}')
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encr_key = decr_key.encrypt(unencr_key.data)
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keychain[encr_key_name] = get_key_obj(encr_key_name,encr_key)
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except ThemisError as e:
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self.log('error!!',decrypt,decr_key,encr_key,decr_key_name,encr_key_name)
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pass
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return keychain
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def disassemble(self,keychain,**kwargs):
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|
return self.assemble(keychain,decrypt=False,**kwargs)
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|
if __name__ == '__main__':
|
|
keymaker = Keymaker('marx69')
|
|
keychain = keymaker.forge_new_keys()
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|
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print(keychain) |