Cyberchef: Bug report: AES 256 CTR wrong encrypt/decrypt

[gcmitec]

With version v9.0.0 if you encrypt/decrypt a file with:

• AES-256
• Mode: CTR
• Input/Output: RAW
• Key/IV: HEX
  the output file has a wrong size (more byte/Mbyte) and it is not encrypted correctly.
  With version v8.38.2, with the same file and configuration, all work fine.

To Reproduce
Configuration:

[
  { "op": "AES Encrypt",
    "args": [{ "option": "Hex", "string": "603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4" }, { "option": "Hex", "string": "f0f1f2f3f4f5f6f7f8f9fafb00000000" }, "CTR", "Raw", "Raw"] }
]

Input file: text file with 16byte (es: "1234567890123456")

[n1474335]

Hi @gcmitec, can you provide what result you are getting and what you should be getting? (preferably in hex)
Thanks

[gcmitec]

Input file (hex):
31 32 33 34 35 36 37 38 39 30 31 32 33 34 35 36
Output v9.0.0 (hex):
c2 93 c3 8a c3 bf c2 95 c2 85 c2 89 c3 91 c3 8e c2 96 65 66 6f 7e c2 a5 63 c3 92
Output v8.38.2 (hex):
93 ca ff 95 85 89 d1 ce 96 65 66 6f 7e a5 63 d2
I use Firefox 68.0

[n1474335]

It seems to be giving me the correct answer. Try doing a forced refresh (Ctrl+Shift+R or Cmd+Shift+R) and try again. If you're still getting the wrong answer, can you upload the file in question please?

[gcmitec]

Output "raw" and you have to download the file (the size displayed is correct the download file size no).
test.txt
download_v9.0.0..txt
download_v8.38.2.txt

[n1474335]

Ok, I can confirm that the downloaded file is incorrect. Thanks for raising this, I'll see what the problem is.

[j433866]

This has been fixed in version 9.0.1. It was caused by the File API converting strings to UTF-8, so to fix this we now only pass data to the File API as an ArrayBuffer.