PurePyZipAES / mZipAES test suite fails TestBaseEncryptedZipNoCompressionPurePyZipAES.test_get_what_you_put_in

[clach04]

PurePyZipAES / mZipAES test suite fails TestBaseEncryptedZipNoCompressionPurePyZipAES.test_get_what_you_put_in

[clach04]

Works fine with (slightly) larger aesop.txt file. Can decrypt file after it's encrypted. Get same (correct) CRC as:

• pyzipper
• 7z
• WinRar

Can also decrypt those fine too.

[clach04]

Using 7z with the exact same data as used in the test, see same CRC as is put into file metadata, a55c1cb0.

7z a -mx0 -ppassword short_win_7z.aes256stored.zip encrypted.md

0xa55c1cb0 is see in the GUI. how ever in command line calc crc mode also see the "bad" crc:

(py310venv) C:\code\py\puren_tonbo>7z h puren_tonbo\tests\data\short_win_7z.aes256stored.zip

7-Zip 19.00 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2019-02-21

Scanning
1 file, 205 bytes (1 KiB)

CRC32             Size  Name
-------- -------------  ------------
044CA98D           205  puren_tonbo\tests\data\short_win_7z.aes256stored.zip
-------- -------------  ------------
044CA98D           205

Size: 205

CRC32  for data:              044CA98D

Everything is Ok

[clach04]

7z tests (its own) zip fine too:

(py310venv) C:\code\py\puren_tonbo>7z t -ppassword puren_tonbo\tests\data\short_win_7z.aes256stored.zip

7-Zip 19.00 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2019-02-21

Scanning the drive for archives:
1 file, 205 bytes (1 KiB)

Testing archive: puren_tonbo\tests\data\short_win_7z.aes256stored.zip
--
Path = puren_tonbo\tests\data\short_win_7z.aes256stored.zip
Type = zip
Physical Size = 205

Everything is Ok

Size:       35
Compressed: 205

[clach04]

Creating zip using ctcipher:

(py2764) C:\code\py\puren_tonbo>python -m puren_tonbo.tools.ptcipher -e -p password puren_tonbo\tests\data\encrypted.md -o puren_tonbo\tests\data\delete_me.aes256stored.zip
DEBUG tmp_out_filename 'C:\\code\\py\\puren_tonbo\\puren_tonbo\\tests\\data\\delete_me.aes256stored.zip20230211_162049pzt6iu'
about to write crc into zip meta 0xa55c1cb0

same crc seen in 7zip GUI with this file.

7z thinks the file is corrupted:

(py310venv) C:\code\py\puren_tonbo>7z h puren_tonbo\tests\data\delete_me.aes256stored.zip

7-Zip 19.00 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2019-02-21

Scanning
1 file, 207 bytes (1 KiB)

CRC32 Size Name

---

9D93B581 207 puren_tonbo\tests\data\delete_me.aes256stored.zip

---

9D93B581 207

Size: 207

CRC32 for data: 9D93B581

Everything is Ok

(py310venv) C:\code\py\puren_tonbo>7z t -ppassword puren_tonbo\tests\data\delete_me.aes256stored.zip

7-Zip 19.00 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2019-02-21

Scanning the drive for archives:
1 file, 207 bytes (1 KiB)

Testing archive: puren_tonbo\tests\data\delete_me.aes256stored.zip

Path = puren_tonbo\tests\data\delete_me.aes256stored.zip
Type = zip
Physical Size = 207

ERROR: CRC Failed in encrypted file. Wrong password? : encrypted.md

Sub items Errors: 1

Archives with Errors: 1

Sub items Errors: 1

also showing different CRC in console versus GUI.

At this stage looks like content of corrupted generation of stored (no compression) for pure Python AES.
Unclear why compat tests comparing with pyzipper work.

[clach04]

confirmed can read in pyzipper created stored fine:

python -m puren_tonbo.tools.ptcat -p password puren_tonbo\tests\data\pyzipper_delete_me.aes256stored.zip

[clach04]

Fixed in 7c12631