```
#include <string.h>
#include <openssl/aes.h>
#include <openssl/rand.h>
#include <openssl/bio.h>
#include <openssl/rsa.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
#define RSA_LEN 2048
#define RSA_FACTOR 65537
int genRSA2048(unsigned char **pub,unsigned int *pub_l,unsigned char **priv,unsigned int *priv_l){
RSA *pRSA = NULL;
pRSA = RSA_generate_key(RSA_LEN,RSA_FACTOR,NULL,NULL);
if (pRSA){
pub_l = malloc(sizeof(pub_l));
*pub_l = i2d_RSAPublicKey(pRSA,pub);
priv_l = malloc(sizeof(priv_l));
*priv_l = i2d_RSAPrivateKey(pRSA,priv);
return 0;
} else {
return 1;
}
}
int main(){
unsigned char *pub = NULL;
unsigned int publ;
unsigned char *priv = NULL;
unsigned int privl;
genRSA2048(&pub,&publ,&priv,&privl);
RSA *privrsa = NULL;
d2i_RSAPrivateKey(&privrsa,(const unsigned char **)&priv,privl);
RSA *pubrsa = NULL;
d2i_RSAPublicKey(&pubrsa,(const unsigned char **)&pub,publ);
unsigned char * data ="01234567890123456789012345678912";
unsigned char encrypted[256];
unsigned char decrypted[32];
int len = RSA_private_encrypt(32,data,encrypted,privrsa,RSA_PKCS1_PADDING);
RSA_public_decrypt(len,encrypted,decrypted,pubrsa,RSA_PKCS1_PADDING);
}
```

I've tried to find the bug by checking with gdb but as being fairly new to C I haven't find any clue to tell me what is happening but I believe it's an allocation problem, however according to the d2i_RSAPrivateKey and similar, they're supposed to allocate the space by itself.

Any help would be greatly appreciated.

compiled as `cc foo.c -lcrypto`

This is the follow up of this question:

Generate RSA public/private key with OpenSSL?

As I reference I used @WhozCraig example in the comments, which can be found here, even when it's quite different, it was a lot of help.