def assemble_file(self, key, passphrase):
"""
attempts to decrypt and assemble the local file defined by the passed manifest key
"""
#attempt to load the manifest
print('assembling....')
with open(MANIFESTDIR + key, 'rb') as f:
manifest = json.loads(f.read().decode())
#create eccpgp object
epgp = ECCPGP()
epgp.generate(passphrase)
#attempt to decrypt manifest
manenc = manifest['manifest']
mandec = epgp.raw_dec(b64dec(manenc), passphrase.encode())
manifest['manifest'] = json.loads(mandec.decode())
data = b''
#assemble all the blocks
fi = Filer()
#size = len(manifest['manifest'])
#i = 0
for chunk in manifest['manifest']:
data += fi.read_chunk(chunk)
#print('{}% complete'.format(int((i/size)*100)))
#i += 1
#create eccpgp structure and assign data
struct = epgp.make_eccpgp_structure()
struct['header'] = manifest['header']
struct['payload'] = data.decode()
#decrypt the structure into a pgp package
pack = epgp.decrypt(struct, passphrase)
#write the decrypted package to assembly directory
with open(ASSEMBLEDIR + pack['header']['filename'], 'wb') as f:
f.write(pack['payload'])
print('file assembled:\t' + ASSEMBLEDIR + pack['header']['filename'])
def assemble_file(self, key, passphrase):
"""
attempts to decrypt and assemble the local file defined by the passed manifest key
"""
#attempt to load the manifest
print('assembling....')
with open(MANIFESTDIR+key, 'rb') as f:
manifest = json.loads(f.read().decode())
#create eccpgp object
epgp = ECCPGP()
epgp.generate(passphrase)
#attempt to decrypt manifest
manenc = manifest['manifest']
mandec = epgp.raw_dec(b64dec(manenc), passphrase.encode())
manifest['manifest'] = json.loads(mandec.decode())
data = b''
#assemble all the blocks
fi = Filer()
#size = len(manifest['manifest'])
#i = 0
for chunk in manifest['manifest']:
data += fi.read_chunk(chunk)
#print('{}% complete'.format(int((i/size)*100)))
#i += 1
#create eccpgp structure and assign data
struct = epgp.make_eccpgp_structure()
struct['header'] = manifest['header']
struct['payload'] = data.decode()
#decrypt the structure into a pgp package
pack = epgp.decrypt(struct, passphrase)
#write the decrypted package to assembly directory
with open(ASSEMBLEDIR+pack['header']['filename'], 'wb') as f:
f.write(pack['payload'])
print('file assembled:\t'+ASSEMBLEDIR+pack['header']['filename'])
