rsa-engine.c

#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;
    }

    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()