You shouldn't be accessing the internal of a private structure. That
structure was made private for a reason and duplicating it in your
engine will break when we change the structure's contents.
Your engine should be using the EVP_PKEY_meth_set_* function to do what
you want (for 1.1.1). For 3.0, you should be writing a provider instead.
Pauli
On 12/4/21 5:04 am, Shariful Alam wrote:
Hello,
Hope you guys are doing well. I'm trying to develop an RSA engine. My
engine was somewhat working until I try to integrate my engine with an
apache httpd server. After installing the httpd from the source code,
it turns out that, I can't compile my engine anymore. I get the
following error while I try to compile (it was compiling before and I
did not make any changes to my engine code).
==============================
*$gcc -fPIC -c r_engine.c*
*r_engine.c:29:8: error: redefinition of ‘struct rsa_meth_st’
struct rsa_meth_st {
^
In file included from /usr/include/openssl/crypto.h:131:0,
from r_engine.c:7:
/usr/include/openssl/ossl_typ.h:147:16: note: originally defined here
typedef struct rsa_meth_st RSA_METHOD;*
=============================
and my *struct rsa_meth_st *looks like the following,
================================================================================
*struct rsa_meth_st {
const char *name;
int (*rsa_pub_enc) (int flen, const unsigned char *from, unsigned
char *to, RSA *rsa, int padding);
int (*rsa_pub_dec) (int flen, const unsigned char *from, unsigned
char *to, RSA *rsa, int padding);
int (*rsa_priv_enc) (int flen, const unsigned char *from, unsigned
char *to, RSA *rsa, int padding);
int (*rsa_priv_dec) (int flen, const unsigned char *from, unsigned
char *to, RSA *rsa, int padding);
int (*rsa_mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX
*ctx);
int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
int (*init) (RSA *rsa);
int (*finish) (RSA *rsa);
int flags;
char *app_data;
int (*rsa_sign) (int type, const unsigned char *m, unsigned int
m_length, unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
int (*rsa_verify) (int dtype, const unsigned char *m, unsigned int
m_length, const unsigned char *sigbuf, unsigned int siglen, const RSA
*rsa);
int (*rsa_keygen) (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
};
*
=================================================================================
My sample skeleton code is here https://pastebin.com/uNXYknEA
<https://pastebin.com/uNXYknEA>
Can anyone please tell me what I'm I doing wrong?
Regards,
Shariful Alam