Apr 28, 2016 · Quoting form the draft of OpenSSL upstream advisory: Padding oracle in AES-NI CBC MAC check (CVE-2016-2107) ===== Severity: High A MITM attacker can use a padding oracle attack to decrypt traffic when the connection uses an AES CBC cipher and the server support AES-NI.

Oct 03, 2018 · Previously it was reported that the Intel AES-NI patch caused the performance on non-AES-NI capable hardware to improve by a factor of 2. Closer investigation showed that the system OpenSSL library 0.9.8e-fips is actually at fault: after recompiling OpenSSL from source, with or without the Intel AES-NI patch, the performance also doubled. Solaris AESNI OpenSSL Engine for Intel Westmere. Cryptography is a major component of secure e-commerce. Since cryptography is compute intensive and adds a significant load to applications, such as SSL web servers (https), crypto performance is an important factor. openssl speed -evp aes-128-cbc. OpenSSL 1.1.1c 28 May 2019. type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 16384 bytes. aes-128-cbc 62939.79k 76141.21k 82262.20k 84452.51k 83872.20k 85103.02k. openssl speed -evp aes-256-cbc. OpenSSL 1.1.1c 28 May 2019 It's dual CPU's supported AES-NI, so when decided to separate my firewall/gateway/etc.. off my ESXi server (mostly so that I didn't bring down the internet every time I needed to tinker/reboot) I wanted a CPU with AES-NI (which for Intel Gen 3 meant at least an I5). AES-NI is just a fast way for the processor to execute the calculations of AES. Normally the computer has to calculate every single step of the AES key schedule and the rounds as a single instruction: Substitute it with the S-boxes, shift the rows, mix the columns, XOR the round key. Subject: How can I enable aes-ni in openssl on Linux I recently became aware of aes-ni and found the linked articles. My CPU supports this, but it seems (assuming the advice in the linked pages is accurate) that openssl does not have it enabled. 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.

May 13, 2016 · These tests were executed with several changing variables, such as AES-NI enabled and AES-NI disabled. As shown in Figure 3, OpenSSL version 1.0.2f performed at 786 MB/s 8192 bytes block size when AES-NI is enabled. MacBook-Pro:bin $ ./openssl speed -elapsed -evp aes-128-cbc You have chosen to measure elapsed time instead of user CPU time.

The OpenSSL engine has its own code for handling AES-NI that works well without using the BSD Cryptodev Engine. IPsec ¶ IPsec will take advantage of cryptodev automatically when a supported cipher is chosen.

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 RaspberryPi PINE64 AES-NI. More than 3 years have passed since last update. Pine64+到着 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. You can verify that OpenSSL uses Intel AES-NI by running OpenSSL's internal benchmarks. Compare the output of openssl speed aes-128-cbc with openssl speed -evp aes-128-cbc . The former skips hardware acceleration even if present, while the latter uses acceleration if available. OpenSSL AES-NI Padding Oracle MitM Information Disclosure Low Nessus Plugin ID 91572. Synopsis It was possible to obtain sensitive information from the remote host May 04, 2016 · On May 3, 2016, the OpenSSL Software Foundation released a security advisory that included six vulnerabilities. Of the six vulnerabilities disclosed, four of them may cause memory corruption or excessive memory usage, one could allow a padding oracle attack to decrypt traffic when the connection uses an AES CBC cipher and the server supports AES-NI, and, lastly, one is specific to a product