[erlang-questions] crypto:engine_list() returns empty list

[Eugene Pirogov]

Hi,

I'm running *crypto:engine_list()*, but it won't list any OpenSSL engines I
have installed. What can be the reason?

I can see the engine in the system by running the following:

# openssl engine -t gost
(gost) Reference implementation of GOST engine
     [ available ]

# openssl engine -t dstu
(dstu) Reference implementation of DSTU engine
     [ available ]


However when running from erl repl, I get this:

# erl
Erlang/OTP 20 [erts-9.2] [source] [64-bit] [smp:4:4] [ds:4:4:10]
[async-threads:10] [hipe] [kernel-poll:false]

Eshell V9.2  (abort with ^G)
1> crypto:engine_list().
[]


What's weird is that if I try to forcefully load the engine, it *works
sometimes.*

   - it works with gost engine:

   # erl
   Erlang/OTP 20 [erts-9.2] [source] [64-bit] [smp:4:4] [ds:4:4:10]
   [async-threads:10] [hipe] [kernel-poll:false]

   Eshell V9.2  (abort with ^G)
   1> {ok, Engine} = crypto:engine_load(<<"gost">>, [], []).
   {ok,#Ref<0.950608548.1984823298.71941>}

   - it does not work with dstu engine:

   # erl
   Erlang/OTP 20 [erts-9.2] [source] [64-bit] [smp:4:4] [ds:4:4:10]
   [async-threads:10] [hipe] [kernel-poll:false]

   Eshell V9.2  (abort with ^G)
   1> {ok, Engine} = crypto:engine_load(<<"dstu">>, [], []).
   ** exception error: no match of right hand side value
   {error,bad_engine_id}

What am I missing? How can I get to load dstu engine
<https://github.com/dstucrypt/openssl-dstu/commits/dstu-1_0_1h> in my case?

-- 
http://www.gmile.me
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