The AES-NI implementation of OpenSSL 1.0.1c does not properly compute the length of an encrypted message when used with a TLS version 1.1 or above. This leads to an integer underflow which can cause a DoS. The vulnerable function aesni_cbc_hmac_sha1_cipher is only included in the 64-bit versions of OpenSSL.

Disabling AES-NI on Linux OpenSSL | Mjanja Tech Nov 08, 2013 OpenSSL OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library. For more information about the team and community around the project, or to start making your own contributions, start with the community page.

Sep 27, 2016

The AES-NI implementation of OpenSSL 1.0.1c does not properly compute the length of an encrypted message when used with a TLS version 1.1 or above. This leads to an integer underflow which can cause a DoS. The vulnerable function aesni_cbc_hmac_sha1_cipher is only included in the 64-bit versions of OpenSSL.

Binaries - OpenSSL

OpenSSL used to provide a function to get the capabilities detected for an ia32 processor, but its no longer available. See the discussion of OPENSSL_ia32cap_loc in the OPENSSL_ia32cap man page. Also see Verify AES-NI use at runtime? on the OpenSSL mailing list. If you are linking to the OpenSSL static library, then you can use: How to find out AES-NI (Advanced Encryption) Enabled on Mar 08, 2020 3.3. OpenSSL Intel AES-NI Engine Red Hat Enterprise Linux ~]# openssl speed aes-128-cbc The 'numbers' are in 1000s of bytes per second processed. type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes aes-128 cbc … OpenSSL - User - How can I enable aes-ni in openssl on Linux As I know ,aesni is support after openssl 1.0.1? it is not an engine, and no kernel module need. It will be enable automatically when you use evp api.