3.3. OpenSSL Intel AES-NI Engine Red Hat Enterprise Linux
1.3 Older Distributions: Applying AES-NI Patch to OpenSSL The OpenSSL libraries distributed with older versions Linux, such as RHEL5, do not support Intel AES-NI. To add this capability the patch should be downloaded from openssl.org , apply the patch to OpenSSL and then recompile the Apache Web server. OpenSSL vs LibreSSL performance AES-NI · Issue #3551 OpenSSL vs LibreSSL performance AES-NI #3551. h-2 opened this issue Jun 23, 2019 · 13 comments Labels. support. Comments. Copy link Quote reply h-2 commented Jun 23, 2019. Describe the bug. This is a follow-up to #2343. When I choose the LibreSSL flavour, OpenVPN reports no hardware crypto. With OpenSSL flavour it does. OpenSSL & AES-NI / Networking, Server, and Protection Sep 18, 2010 OpenSSL AES-NI Padding Oracle MitM Information Disclosure
openssl speed -elapsed -evp aes-128-cbc Speed test with explicit disabled AES-NI feature: OPENSSL_ia32cap="~0x200000200000000" openssl speed -elapsed -evp aes-128-cbc The result the first line will run faster (almost double on my i7 cpu). So that conclusion is that AES-NI is used by default for openssl.
Why Intel® AES-NI Matters. Encryption is frequently recommended as the best way to secure business-critical data, and AES is the most widely used standard when protecting network traffic, personal data, and corporate IT infrastructures.
Aug 23, 2018
Significantly better performance of the latter command indicates that AES-NI is enabled. Note that the outputs below are shortened for brevity: ~]# 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 99696.17k 107792.98k 109961.22k 110559.91k Nov 08, 2013 · AES-NI acceleration disabled via OPENSSL ia32cap: Brainiarc7@Brainiarc7-PC ~ $ OPENSSL_ia32cap=”~0x200000200000000″ openssl speed -elapsed -evp aes-128-cbc You have chosen to measure elapsed time instead of user CPU time. Doing aes-128-cbc for 3s on 16 size blocks: 23114849 aes-128-cbc’s in 3.00s Mar 08, 2020 · Apparently, since 1.0.1 openssl doesn’t need a specific engine anymore to use the AES-NI-instructions; it has native support via evp. To test for AES-NI support in openssl 1.0.1 and newer, simply compare the output of these commands: $ openssl speed aes-256-cbc $ openssl speed -evp aes-256-cbc OpenSSL - Padding Oracle in AES-NI CBC MAC Check. CVE-2016-2107 . dos exploit for Multiple platform It does indeed seem that the info I linked is out-of-date and that aes-ni is enabled by default: Command A = openssl speed -elapsed -evp aes-128-cbc Command B = OPENSSL_ia32cap="~0x200000200000000" openssl speed -elapsed -evp aes-128-cbc Results: Command 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes ----- A 796435.32k 845155.61k 852750.59k openssl speed -elapsed -evp aes-128-cbc Speed test with explicit disabled AES-NI feature: OPENSSL_ia32cap="~0x200000200000000" openssl speed -elapsed -evp aes-128-cbc The result the first line will run faster (almost double on my i7 cpu). So that conclusion is that AES-NI is used by default for openssl. AES-NI (or the Intel Advanced Encryption Standard New Instructions; AES-NI) was the first major implementation. AES-NI is an extension to the x86 instruction set architecture for microprocessors from Intel and AMD proposed by Intel in March 2008.