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101 lines
2.5 KiB
Python
101 lines
2.5 KiB
Python
"""
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Storage for both keys and data
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"""
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from simplekv.fs import FilesystemStore
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from simplekv.memory.redisstore import RedisStore
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import redis
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import hashlib,os
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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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import zlib
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class Crypt(object):
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def log(self,*x): print(*x)
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def __init__(self,name=None,fn=None,cell=None):
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if not name and fn: name=os.path.basename(fn).replace('.','_')
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self.name,self.fn,self.cell = name,fn,cell
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self.store = FilesystemStore(self.fn)
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def hash(self,binary_data):
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return hashlib.sha256(binary_data).hexdigest()
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# return zlib.adler32(binary_data)
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def force_binary(self,k_b):
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if type(k_b)==str: k_b=k_b.encode()
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if type(k_b)!=bytes: k_b=str(k_b).encode()
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return k_b
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def package_key(self,k,prefix=''):
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k_b = self.force_binary(k)
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# k_b = self.cell.encrypt(k_b)
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prefix_b = self.force_binary(prefix)
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k_b = self.hash(prefix_b + k_b)
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return k_b
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def package_val(self,k):
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k_b = self.force_binary(k)
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if self.cell is not None: k_b = self.cell.encrypt(k_b)
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return k_b
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def unpackage_val(self,k_b):
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try:
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if self.cell is not None: k_b = self.cell.decrypt(k_b)
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except ThemisError:
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pass
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return k_b
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def set(self,k,v,prefix=''):
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self.log('set() k -->',k)
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k_b=self.package_key(k,prefix=prefix)
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self.log('set() k_b -->',k_b)
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self.log('set() v -->',v)
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v_b=self.package_val(v)
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self.log('set() v_b -->',v_b)
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return self.store.put(k_b,v_b)
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def get(self,k,prefix=''):
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self.log('get() k -->',k)
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k_b=self.package_key(k,prefix=prefix)
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self.log('get() k_b -->',k_b)
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try:
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v=self.store.get(k_b)
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except KeyError:
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return None
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self.log('get() v -->',v)
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v_b=self.unpackage_val(v)
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self.log('get() v_b -->',v_b)
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return v_b
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class KeyCrypt(Crypt):
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def __init__(self):
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return super().__init__(name=PATH_CRYPT_KEYS.replace('.','_'))
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class DataCrypt(Crypt):
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def __init__(self):
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return super().__init__(name=PATH_CRYPT_DATA.replace('.','_'))
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if __name__=='__main__':
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crypt = Crypt('testt')
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print(crypt.set('hellothere',b'ryan'))
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# print(crypt.get(b'hello there')) |