Unlocking session keyring with LUKS password prompted at boot

English Install/Boot/Login
10

I do have the key in the keyring :

# keyctl list @u
1 key in keyring:
678611289: --alswrv     0     0 user: cryptsetup

# keyctl print 678611289
keyctl_read_alloc: Permission denied

The key is there, I cannot print it, but it is there. My boot is quite fast (SSD and good cpu).

So, I think the issue might be related to PAM.