About 16.2 Symmetric key encryption sample code

[Lyhappig]

When I set #if 1 in function test_skcipher_callback, the decrypt can't be printed in dmesg. I wanna to know why.

But when I add code pr_info("Decrypted: %s\n", sk->scratchpad); after line-168 in test_skcipher_encrypt, the info output in dmesg is:

Symmetric key: password123
Plaintext: Testing
Encryption request successful
Decrypted: \x9ad\x98r\xd1ԉ\x97\xa2\xc9\xf9\xf7?>\x9b

We can get that the decryption is something wrong.

If I do something wrong, please tell me my fault.

If the problem exist, who can solve this problem?

PS: My OS is a CentOS8 virtual mathine, the kernel used is 5.4.250-1.el8.elrepo.x86_64.

[OldManYellsAtCloud]

I noticed the same also - the callback isn't called at the end of cipher operation for some reason.

If I manually call skcipher_request_complete(sk->req, 0); after the encryption, then the callback works, however this doesn't seem to be a public call, so definitely wouldn't call it a solution... (considering that this api is async, most likely it does what I expect only by chance)

Debian 12 w/ Linux 6.1

[jserv]

I am closing this issue since the crypto example is far from being useful. Let's add the crypto modules back if we can figure out proper ways to provide.