87 lines
3.4 KiB
Python
87 lines
3.4 KiB
Python
'''
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Onionr - P2P Microblogging Platform & Social network
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This file handles Onionr's cryptography.
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'''
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'''
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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import nacl.signing, nacl.encoding, nacl.public, os
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class OnionrCrypto:
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def __init__(self, coreInstance):
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self._core = coreInstance
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self._keyFile = 'data/keys.txt'
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self.pubKey = None
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self.privKey = None
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# Load our own pub/priv Ed25519 keys, gen & save them if they don't exist
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if os.path.exists(self._keyFile):
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with open('data/keys.txt', 'r') as keys:
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keys = keys.read().split(',')
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self.pubKey = keys[0]
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self.privKey = keys[1]
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else:
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keys = self.generatePubKey()
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self.pubKey = keys[0]
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self.privKey = keys[1]
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with open(self._keyFile, 'w') as keyfile:
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keyfile.write(self.pubKey + ',' + self.privKey)
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return
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def edVerify(self, data, key):
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'''Verify signed data (combined in nacl) to an ed25519 key'''
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key = nacl.signing.VerifyKey(key=key, encoder=nacl.encoding.Base32Encoder)
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retData = ''
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if encodeResult:
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retData = key.verify(data.encode(), encoder=nacl.encoding.Base64Encoder) # .encode() is not the same as nacl.encoding
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else:
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retData = key.verify(data.encode())
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return retData
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def edSign(self, data, key, encodeResult=False):
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'''Ed25519 sign data'''
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key = nacl.signing.SigningKey(seed=key, encoder=nacl.encoding.Base32Encoder)
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retData = ''
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if encodeResult:
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retData = key.sign(data.encode(), encoder=nacl.encoding.Base64Encoder) # .encode() is not the same as nacl.encoding
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else:
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retData = key.sign(data.encode())
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return retData
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def pubKeyEncrypt(self, data, peer):
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'''Encrypt to a peers public key (Curve25519, taken from Ed25519 pubkey)'''
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return
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def pubKeyEncrypt(self, data, peer):
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'''pubkey decrypt (Curve25519, taken from Ed25519 pubkey)'''
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return
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def symmetricPeerEncrypt(self, data):
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'''Salsa20 encrypt data to peer (with mac)'''
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return
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def symmetricPeerDecrypt(self, data, peer):
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'''Salsa20 decrypt data from peer (with mac)'''
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return
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def generateSymmetric(self, data, peer):
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'''Generate symmetric key'''
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return
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def generatePubKey(self):
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'''Generate a Ed25519 public key pair, return tuple of base64encoded pubkey, privkey'''
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private_key = nacl.signing.SigningKey.generate()
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public_key = private_key.verify_key.encode(encoder=nacl.encoding.Base32Encoder())
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return (public_key.decode(), private_key.encode(encoder=nacl.encoding.Base32Encoder()).decode()) |