72 lines
1.7 KiB
Python
72 lines
1.7 KiB
Python
"""Encrypt a single file using the given key and iv"""
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import argparse
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import binascii
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import logging
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import os
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import StringIO
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import sys
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from twisted.internet import defer
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from twisted.internet import reactor
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from lbrynet import conf
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from lbrynet.cryptstream import CryptBlob
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from lbrynet.core import HashBlob
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from lbrynet.core import log_support
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from lbrynet.core import cryptoutils
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log = logging.getLogger('decrypt_blob')
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def main():
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conf.initialize_settings()
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parser = argparse.ArgumentParser()
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parser.add_argument('filename')
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parser.add_argument('hex_key')
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parser.add_argument('hex_iv')
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args = parser.parse_args()
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log_support.configure_console(level='DEBUG')
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d = run(args)
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reactor.run()
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@defer.inlineCallbacks
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def run(args):
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try:
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yield encrypt_blob(args.filename, args.hex_key, args.hex_iv)
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except Exception:
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log.exception('Failed to encrypt blob')
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finally:
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reactor.callLater(0, reactor.stop)
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def encrypt_blob(filename, key, iv):
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blob = Blob()
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blob_maker = CryptBlob.CryptStreamBlobMaker(
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binascii.unhexlify(key), binascii.unhexlify(iv), 0, blob)
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with open(filename) as fin:
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blob_maker.write(fin.read())
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blob_maker.close()
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class Blob(object):
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def __init__(self):
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self.data = StringIO.StringIO()
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def write(self, data):
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self.data.write(data)
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def close(self):
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hashsum = cryptoutils.get_lbry_hash_obj()
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buffer = self.data.getvalue()
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hashsum.update(buffer)
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with open(hashsum.hexdigest(), 'w') as fout:
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fout.write(buffer)
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return defer.succeed(True)
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if __name__ == '__main__':
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sys.exit(main())
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