Hi Eric, Herbert, I just noticed that the algorithm 'hmac(sha3-224)' is not supported anymore. This is at least on yesterday's 6.17 as well as on linux-next. On earlier kernels 'hmac(sha3-224)' was available. I don't exactly know when it started to be missing. I can't tell if the same is true on other archs. 'sha3-224' as digest is there, but 'hmac(sha3-224)' is not. All the other sha3 and all sha2 variants are there as well (digest and hmac). # grep "sha3-" /proc/crypto name : hmac(sha3-512) driver : hmac(sha3-512-s390) name : hmac(sha3-384) driver : hmac(sha3-384-s390) name : hmac(sha3-256) driver : hmac(sha3-256-s390) name : sha3-384 driver : sha3-384-s390 name : sha3-512 driver : sha3-512-s390 name : sha3-224 driver : sha3-224-s390 name : sha3-256 driver : sha3-256-s390 name : sha3-512 driver : sha3-512-generic name : sha3-384 driver : sha3-384-generic name : sha3-256 driver : sha3-256-generic name : sha3-224 driver : sha3-224-generic On a 6.11 kernel: # grep "sha3-" /proc/crypto name : sha3-384 driver : sha3-384-s390 name : sha3-512 driver : sha3-512-s390 name : sha3-224 <---- its there driver : sha3-224-s390 name : sha3-256 driver : sha3-256-s390 name : sha3-512 driver : sha3-512-generic name : sha3-384 driver : sha3-384-generic name : sha3-256 driver : sha3-256-generic name : sha3-224 driver : sha3-224-generic -- Ingo Franzki eMail: ifranzki@xxxxxxxxxxxxx Tel: ++49 (0)7031-16-4648 Linux on IBM Z Development, Schoenaicher Str. 220, 71032 Boeblingen, Germany IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Gregor Pillen Geschäftsführung: David Faller Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 IBM DATA Privacy Statement: https://www.ibm.com/privacy/us/en/