OpenSSL dynamic engine loading shows error

[Shariful Alam]

Any help regarding this matter??

Regards,
Shariful

On Thu, Aug 26, 2021, 12:06 AM Shariful Alam <dipto181 at gmail.com> wrote:

> Hello,
>
> I have a simple rsa engine code (from engines/e_dasync.c). My code
> compiles. Command "*$openssl engine -t -c*" shows the following,
>
>
>  openssl engine -t -c
>
> (rdrand) Intel RDRAND engine
>
>  [RAND]
>
>      [ available ]
>
> (dynamic) Dynamic engine loading support
>
>      [ unavailable ]
>
> (dasync) Dummy Async engine support
>
>  [RSA]
>
>      [ available ]
>
>
> I also modify *openssl.cnf* configuration as following to load this
> engine,
>
>
> openssl_conf = openssl_def
>
>
> [openssl_def]
>
> engines = engine_section
>
>
> [engine_section]
>
> rsa-engine-new = rsa_section
>
>
> [rsa_section]
>
> engine_id = rsa-engine-new
>
>
> Then when I run the command "$*openssl engine*", I get the following
> error,
>
> $openssl engine
>
> (rdrand) Intel RDRAND engine
>
> (dynamic) Dynamic engine loading support
>
> (dasync) Dummy Async engine support
>
> 139633213376256:error:260AB089:engine
> routines:ENGINE_ctrl_cmd_string:invalid cmd
> name:crypto/engine/eng_ctrl.c:255:
>
> 139633213376256:error:260BC066:engine routines:int_engine_configure:engine
> configuration error:crypto/engine/eng_cnf.c:141:section=rsa_section,
> name=oid_section, value=new_oids
>
> 139633213376256:error:0E07606D:configuration file
> routines:module_run:module initialization
> error:crypto/conf/conf_mod.c:177:module=engines, value=engine_section,
> retcode=-1
>
>
> Any help why is this happening? How can I fix this?
>
> My goal is to use my OpenSSL engine with Apache for mod_ssl. Do I have to
> compile my engine with the OpenSSL source code to do that?
>
>
> Here is the complete source code of my sample engine,
>
> ==============================================
>
>
> #include <stdio.h>
>
> #include <string.h>
>
>
> #include <openssl/engine.h>
>
> #include <openssl/sha.h>
>
> #include <openssl/aes.h>
>
> #include <openssl/rsa.h>
>
> #include <openssl/evp.h>
>
> #include <openssl/async.h>
>
> #include <openssl/bn.h>
>
> #include <openssl/crypto.h>
>
> #include <openssl/ssl.h>
>
> #include <openssl/modes.h>
>
>
> /* Engine Id and Name */
>
> static const char *engine_dasync_id = "dasync";
>
> static const char *engine_dasync_name = "Dummy Async engine support";
>
>
> static int dasync_pub_enc(int flen, const unsigned char *from,
>
>                     unsigned char *to, RSA *rsa, int padding) {
>
> printf("dasync_pub_enc\n");
>
>
>
> return 0;
>
> }
>
>
> static int dasync_pub_dec(int flen, const unsigned char *from,
>
>                     unsigned char *to, RSA *rsa, int padding) {
>
> printf("dasync_pub_dec\n");
>
>
>
> return 0;
>
> }
>
>
> static int dasync_rsa_priv_enc(int flen, const unsigned char *from,
> unsigned char *to, RSA *rsa, int padding){
>
>      printf("dasync_rsa_priv_enc\n");
>
> return 0;
>
> }
>
>
> static int dasync_rsa_priv_dec(int flen, const unsigned char *from,
> unsigned char *to, RSA *rsa, int padding){
>
> printf("dasync_rsa_priv_dec\n");
>
> return 0;
>
> }
>
>
>
> static RSA_METHOD *dasync_rsa_method = NULL;
>
>
>
> static int bind_dasync(ENGINE *e){
>
>     /* Setup RSA_METHOD */
>
>     if ((dasync_rsa_method = RSA_meth_new("Dummy Async RSA method", 0)) ==
> NULL
>
>         || RSA_meth_set_pub_enc(dasync_rsa_method, dasync_pub_enc) == 0
>
>         || RSA_meth_set_pub_dec(dasync_rsa_method, dasync_pub_dec) == 0
>
>         || RSA_meth_set_priv_enc(dasync_rsa_method, dasync_rsa_priv_enc)
> == 0
>
>         || RSA_meth_set_priv_dec(dasync_rsa_method, dasync_rsa_priv_dec)
> == 0
>
> ) {
>
>
>         return 0;
>
>     }
>
>
>     /* Ensure the dasync error handling is set up */
>
>
>
>     if (!ENGINE_set_id(e, engine_dasync_id)
>
>         || !ENGINE_set_name(e, engine_dasync_name)
>
>         || !ENGINE_set_RSA(e, dasync_rsa_method)
>
>         ) {
>
>         return 0;
>
>     }
>
>     return 1;
>
> }
>
>
> static int bind_helper(ENGINE *e, const char *id){
>
>     if (!bind_dasync(e)){
>
> printf("2_Error: Inside Bind helper\n");
>
>         return 0;
>
> }
>
>     return 1;
>
> }
>
>
> IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
>
> IMPLEMENT_DYNAMIC_CHECK_FN()
>
>
> =============================================
>
>
>
>
>
> Thanks,
>
> Shariful
>
>
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