How to know if a file is actually encrypted ?

[tuan]

I know veracrypt encrypts in real time when copying to a mounted drive and
decrypts when copying to a computer. How do I know if a file is encrypted
when copying to a drive? I don't copy it in the usual way but use a c#
software to copy it to a mounted drive.

[morton]

How do I know if a file is encrypted when copying to a drive?

VeraCrypt doesn't provide file-level encryption, just look at the filesystem the file is copied to.
For example:

$ mount | grep veracrypt
veracrypt on /tmp/.veracrypt_aux_mnt1 type fuse.veracrypt (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)

[tuan]

i'm not very good at english,but when i read a faq,i know veracrypt do real
time encryption and decryption for file.here is the faq: "
Can I directly play a video (.avi, .mpg, etc.) stored on a VeraCrypt volume?
Yes, VeraCrypt-encrypted volumes are like normal disks. You provide the
correct password (and/or keyfile) and mount (open) the VeraCrypt volume.
When you double click the icon of the video file, the operating system
launches the application associated with the file type – typically a media
player. The media player then begins loading a small initial portion of the
video file from the VeraCrypt-encrypted volume to RAM (memory) in order to
play it. While the portion is being loaded, VeraCrypt is automatically
decrypting it (in RAM). The decrypted portion of the video (stored in RAM)
is then played by the media player. While this portion is being played, the
media player begins loading another small portion of the video file from
the VeraCrypt-encrypted volume to RAM (memory) and the process repeats.

The same goes for video recording: Before a chunk of a video file is
written to a VeraCrypt volume, VeraCrypt encrypts it in RAM and then writes
it to the disk. This process is called on-the-fly encryption/decryption and
it works for all file types (not only for video files)."

Vào 19:14, CN, 22 Th12, 2024 morton morton-f@users.sourceforge.net đã
viết:

VeraCrypt doesn't provide file-level encryption, jook at the filesystem
the file is copied to.
For example:

$ mount | grep veracrypt
veracrypt on /tmp/.veracrypt_aux_mnt1 type fuse.veracrypt (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)

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How to know if a file is actually encrypted ?
https://sourceforge.net/p/veracrypt/discussion/technical/thread/6ca88b45e1/?limit=25#0787

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