From 84bd4fdc3efdd8b4e05ec4c5e23f04448c0bf70f Mon Sep 17 00:00:00 2001
From: Victor Shyba <victor1984@riseup.net>
Date: Mon, 17 Jul 2017 02:11:36 -0300
Subject: [PATCH] fix encryption script

---
 scripts/encrypt_blob.py | 45 ++++++++++++++++++-----------------------
 1 file changed, 20 insertions(+), 25 deletions(-)

diff --git a/scripts/encrypt_blob.py b/scripts/encrypt_blob.py
index 440ea7a8d..a30fbcc98 100644
--- a/scripts/encrypt_blob.py
+++ b/scripts/encrypt_blob.py
@@ -1,17 +1,16 @@
 """Encrypt a single file using the given key and iv"""
 import argparse
-import binascii
 import logging
-import StringIO
 import sys
 
 from twisted.internet import defer
 from twisted.internet import reactor
 
 from lbrynet import conf
-from lbrynet.cryptstream import CryptBlob
 from lbrynet.core import log_support
-from lbrynet.core import cryptoutils
+from lbrynet.core.HashAnnouncer import DummyHashAnnouncer
+from lbrynet.core.BlobManager import DiskBlobManager
+from lbrynet.cryptstream.CryptStreamCreator import CryptStreamCreator
 
 
 log = logging.getLogger('decrypt_blob')
@@ -26,7 +25,7 @@ def main():
     args = parser.parse_args()
     log_support.configure_console(level='DEBUG')
 
-    d = run(args)
+    run(args)
     reactor.run()
 
 
@@ -40,29 +39,25 @@ def run(args):
         reactor.callLater(0, reactor.stop)
 
 
+@defer.inlineCallbacks
 def encrypt_blob(filename, key, iv):
-    blob = Blob()
-    blob_maker = CryptBlob.CryptStreamBlobMaker(
-        binascii.unhexlify(key), binascii.unhexlify(iv), 0, blob)
-    with open(filename) as fin:
-        blob_maker.write(fin.read())
-    blob_maker.close()
+    dummy_announcer = DummyHashAnnouncer()
+    manager = DiskBlobManager(dummy_announcer, '.', '.')
+    yield manager.setup()
+    creator = CryptStreamCreator(manager, filename, key, iv_generator(iv))
+    with open(filename, 'r') as infile:
+        data = infile.read(2**14)
+        while data:
+            yield creator.write(data)
+            data = infile.read(2**14)
+    yield creator.stop()
 
 
-class Blob(object):
-    def __init__(self):
-        self.data = StringIO.StringIO()
-
-    def write(self, data):
-        self.data.write(data)
-
-    def close(self):
-        hashsum = cryptoutils.get_lbry_hash_obj()
-        buffer = self.data.getvalue()
-        hashsum.update(buffer)
-        with open(hashsum.hexdigest(), 'w') as fout:
-            fout.write(buffer)
-        return defer.succeed(True)
+def iv_generator(iv):
+    iv = int(iv, 16)
+    while 1:
+        iv += 1
+        yield ("%016d" % iv)[-16:]
 
 
 if __name__ == '__main__':