[openssl-users] Compiling OpenSSL 1.1.0e with AF_ALG engine

[David Oberhollenzer]

Hi,

I'm trying to compile OpenSSL 1.1.0e with the afalg engine on a
recent CentOS 7. I removed the kernel version check for the
afalg engine from the Configure script since AFAIK the CentOS
kernel should have all of that back ported. I ran the following
configure command:

$ ./Configure linux-x86_64 shared enable-engine enable-dso \
  enable-afalgeng --prefix=/opt/openssl --openssldir=/opt/openssl


After make, I get an afalg.so in the output, but after installing
it and running openssl speed I get complaints about bind_engine
not being exported:


$ /opt/openssl/bin/openssl speed -evp aes-128-cbc -engine afalg
invalid engine "afalg"
140034190133056:error:2506406A:DSO support
routines:dlfcn_bind_func:could not bind to the requested symbol
name:crypto/dso/dso_dlfcn.c:178:symname(bind_engine):
/opt/openssl/lib/engines-1.1/afalg.so: undefined symbol: bind_engine
140034190133056:error:2506C06A:DSO support routines:DSO_bind_func:could
not bind to the requested symbol name:crypto/dso/dso_lib.c:185:
140034190133056:error:260B6068:engine routines:dynamic_load:DSO
failure:crypto/engine/eng_dyn.c:427:
140034190133056:error:2606A074:engine routines:ENGINE_by_id:no such
engine:crypto/engine/eng_list.c:339:id=afalg
140034190133056:error:25066067:DSO support routines:dlfcn_load:could not
load the shared
library:crypto/dso/dso_dlfcn.c:113:filename(libafalg.so): libafalg.so:
cannot open shared object file: No such file or directory
140034190133056:error:25070067:DSO support routines:DSO_load:could not
load the shared library:crypto/dso/dso_lib.c:161:
140034190133056:error:260B6084:engine routines:dynamic_load:dso not
found:crypto/engine/eng_dyn.c:414:
...


Running readelf on afalg.so confirms that the symbol is indeed not
in the binary. Am I missing some magic configure options or is there
some other problem?


Thanks,

David