[Bug 3466] Prefer using AEAD algorithms

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3466

--- Comment #4 from tim <tom25519 at yandex.com> ---
I do a test in OpenSSL, but it's in a Rocky Linux VM:

openssl speed -evp aes-256-gcm
Doing AES-256-GCM for 3s on 16 size blocks: 13327934 AES-256-GCM's in
2.94s
Doing AES-256-GCM for 3s on 64 size blocks: 4010515 AES-256-GCM's in
2.96s
Doing AES-256-GCM for 3s on 256 size blocks: 3382265 AES-256-GCM's in
2.97s
Doing AES-256-GCM for 3s on 1024 size blocks: 942484 AES-256-GCM's in
2.96s
Doing AES-256-GCM for 3s on 8192 size blocks: 122282 AES-256-GCM's in
2.97s
Doing AES-256-GCM for 3s on 16384 size blocks: 61389 AES-256-GCM's in
2.98s
version: 3.0.1
built on: Thu Aug 11 00:00:00 2022 UTC

openssl speed -evp aes-256-ctr
Doing AES-256-CTR for 3s on 16 size blocks: 15322101 AES-256-CTR's in
2.94s
Doing AES-256-CTR for 3s on 64 size blocks: 4208151 AES-256-CTR's in
2.96s
Doing AES-256-CTR for 3s on 256 size blocks: 3635130 AES-256-CTR's in
2.98s
Doing AES-256-CTR for 3s on 1024 size blocks: 986443 AES-256-CTR's in
2.95s
Doing AES-256-CTR for 3s on 8192 size blocks: 127640 AES-256-CTR's in
2.96s
Doing AES-256-CTR for 3s on 16384 size blocks: 57412 AES-256-CTR's in
2.86s
version: 3.0.1
built on: Thu Aug 11 00:00:00 2022 UTC

AES_CGM doesn't much slower than AES_CTR

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