我发现了以下说明，用于在我们拥有的一些基于 Westmere 的系统上获取英特尔的 contrib OpenSSL 0.9.8 引擎代码：
$ wget https://www.openssl.org/contrib/intel-accel-1.5.tar.gz
$ tar -zxvf intel-accel-1.5.tar.gz
$ cd intel-accel-1.5
$ make
$ sudo cp libintel-accel.so /usr/lib/ssl/engines/
dm@test:~$ openssl speed -evp aes-256-cbc -engine intel-accel
[...]
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
aes-256-cbc 411556.71k 552666.78k 585173.93k 590249.30k 592617.47k
dm@test:~$ openssl speed -evp aes-256-cbc # No Intel AES-NI
[...]
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
aes-256-cbc 67324.29k 98995.86k 118538.15k 123550.22k 124304.70k
我该如何编辑我的 Debian 6 机器上的 /etc/ssl/openssl.cnf 文件，以便让其他可能链接到 OpenSSL 的东西（例如 OpenSSH 5.5p1、Apache 等）默认使用此引擎？
我尝试了以下操作：
# at the top of the openssl.cnf
openssl_conf = openssl_def
[...]
# at the bottom:
[openssl_def]
engines = engine_section
[engine_section]
foo = aesni_section
[aesni_section]
dynamic_path = /usr/lib/ssl/engines/libintel-accel.so
engine_id = intel-accel
default_algorithms = ALL
init = 1
出现以下错误：
dm@test:~$ openssl speed -evp aes-256-cbc
Error configuring OpenSSL
1645:error:26078067:engine routines:ENGINE_LIST_ADD:conflicting engine id:eng_list.c:116:
1645:error:2606906E:engine routines:ENGINE_add:internal list error:eng_list.c:288:
1645:error:260B6067:engine routines:DYNAMIC_LOAD:conflicting engine id:eng_dyn.c:540:
1645:error:260BC065:engine routines:INT_ENGINE_CONFIGURE:engine configuration error:eng_cnf.c:204:section=aesni_section, name=dynamic_path, value=/usr/lib/ssl/engines/libintel-accel.so
1645:error:0E07606D:configuration file routines:MODULE_RUN:module initialization error:conf_mod.c:235:module=engines, value=engine_section, retcode=-1
Segmentation fault
在 config(5SSL) 中输入什么咒语才能使其成为系统默认值？
答案1
哎呀，应该更仔细地阅读 intel-accel-1.5/README：
openssl_conf = openssl_init
[openssl_init]
engines = engines_section
[engines_section]
intel-accel = intel_accel
[intel_accel]
default_algorithms = ALL