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Unified Diff: tools/telemetry/third_party/gsutil/third_party/rsa/rsa/bigfile.py

Issue 1260493004: Revert "Add gsutil 4.13 to telemetry/third_party" (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 5 months ago
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Index: tools/telemetry/third_party/gsutil/third_party/rsa/rsa/bigfile.py
diff --git a/tools/telemetry/third_party/gsutil/third_party/rsa/rsa/bigfile.py b/tools/telemetry/third_party/gsutil/third_party/rsa/rsa/bigfile.py
deleted file mode 100644
index 516cf56b51e1f00cf68eda48ce00cbd1b0b2590c..0000000000000000000000000000000000000000
--- a/tools/telemetry/third_party/gsutil/third_party/rsa/rsa/bigfile.py
+++ /dev/null
@@ -1,87 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-'''Large file support
-
- - break a file into smaller blocks, and encrypt them, and store the
- encrypted blocks in another file.
-
- - take such an encrypted files, decrypt its blocks, and reconstruct the
- original file.
-
-The encrypted file format is as follows, where || denotes byte concatenation:
-
- FILE := VERSION || BLOCK || BLOCK ...
-
- BLOCK := LENGTH || DATA
-
- LENGTH := varint-encoded length of the subsequent data. Varint comes from
- Google Protobuf, and encodes an integer into a variable number of bytes.
- Each byte uses the 7 lowest bits to encode the value. The highest bit set
- to 1 indicates the next byte is also part of the varint. The last byte will
- have this bit set to 0.
-
-This file format is called the VARBLOCK format, in line with the varint format
-used to denote the block sizes.
-
-'''
-
-from rsa import key, common, pkcs1, varblock
-from rsa._compat import byte
-
-def encrypt_bigfile(infile, outfile, pub_key):
- '''Encrypts a file, writing it to 'outfile' in VARBLOCK format.
-
- :param infile: file-like object to read the cleartext from
- :param outfile: file-like object to write the crypto in VARBLOCK format to
- :param pub_key: :py:class:`rsa.PublicKey` to encrypt with
-
- '''
-
- if not isinstance(pub_key, key.PublicKey):
- raise TypeError('Public key required, but got %r' % pub_key)
-
- key_bytes = common.bit_size(pub_key.n) // 8
- blocksize = key_bytes - 11 # keep space for PKCS#1 padding
-
- # Write the version number to the VARBLOCK file
- outfile.write(byte(varblock.VARBLOCK_VERSION))
-
- # Encrypt and write each block
- for block in varblock.yield_fixedblocks(infile, blocksize):
- crypto = pkcs1.encrypt(block, pub_key)
-
- varblock.write_varint(outfile, len(crypto))
- outfile.write(crypto)
-
-def decrypt_bigfile(infile, outfile, priv_key):
- '''Decrypts an encrypted VARBLOCK file, writing it to 'outfile'
-
- :param infile: file-like object to read the crypto in VARBLOCK format from
- :param outfile: file-like object to write the cleartext to
- :param priv_key: :py:class:`rsa.PrivateKey` to decrypt with
-
- '''
-
- if not isinstance(priv_key, key.PrivateKey):
- raise TypeError('Private key required, but got %r' % priv_key)
-
- for block in varblock.yield_varblocks(infile):
- cleartext = pkcs1.decrypt(block, priv_key)
- outfile.write(cleartext)
-
-__all__ = ['encrypt_bigfile', 'decrypt_bigfile']
-

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