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/* NOCW */
/* demos/spkigen.c
* 18-Mar-1997 - eay - A quick hack :-)
* version 1.1, it would probably help to save or load the
* private key :-)
*/
#include <stdio.h>
#include <stdlib.h>
#include <openssl/err.h>
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
/* The following two don't exist in SSLeay but they are in here as
* examples */
#define PEM_write_SPKI(fp,x) \
PEM_ASN1_write((int (*)())i2d_NETSCAPE_SPKI,"SPKI",fp,\
(char *)x,NULL,NULL,0,NULL)
int SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey);
/* These are defined in the next version of SSLeay */
int EVP_PKEY_assign(EVP_PKEY *pkey, int type,char *key);
#define RSA_F4 0x10001
#define EVP_PKEY_assign_RSA(pkey,rsa) EVP_PKEY_assign((pkey),EVP_PKEY_RSA,\
(char *)(rsa))
int main(argc,argv)
int argc;
char *argv[];
{
RSA *rsa=NULL;
NETSCAPE_SPKI *spki=NULL;
EVP_PKEY *pkey=NULL;
char buf[128];
int ok=0,i;
FILE *fp;
pkey=EVP_PKEY_new();
if (argc < 2)
{
/* Generate an RSA key, the random state should have been seeded
* with lots of calls to RAND_seed(....) */
fprintf(stderr,"generating RSA key, could take some time...\n");
if ((rsa=RSA_generate_key(512,RSA_F4,NULL)) == NULL) goto err;
}
else
{
if ((fp=fopen(argv[1],"r")) == NULL)
{ perror(argv[1]); goto err; }
if ((rsa=PEM_read_RSAPrivateKey(fp,NULL,NULL)) == NULL)
goto err;
fclose(fp);
}
if (!EVP_PKEY_assign_RSA(pkey,rsa)) goto err;
rsa=NULL;
/* lets make the spki and set the public key and challenge */
if ((spki=NETSCAPE_SPKI_new()) == NULL) goto err;
if (!SPKI_set_pubkey(spki,pkey)) goto err;
fprintf(stderr,"please enter challenge string:");
fflush(stderr);
buf[0]='\0';
fgets(buf,sizeof buf,stdin);
i=strlen(buf);
if (i > 0) buf[--i]='\0';
if (!ASN1_STRING_set((ASN1_STRING *)spki->spkac->challenge,
buf,i)) goto err;
if (!NETSCAPE_SPKI_sign(spki,pkey,EVP_md5())) goto err;
PEM_write_SPKI(stdout,spki);
if (argc < 2)
PEM_write_RSAPrivateKey(stdout,pkey->pkey.rsa,NULL,NULL,0,NULL);
ok=1;
err:
if (!ok)
{
fprintf(stderr,"something bad happened....");
ERR_print_errors_fp(stderr);
}
NETSCAPE_SPKI_free(spki);
EVP_PKEY_free(pkey);
exit(!ok);
}
/* This function is in the next version of SSLeay */
int EVP_PKEY_assign(pkey,type,key)
EVP_PKEY *pkey;
int type;
char *key;
{
if (pkey == NULL) return(0);
if (pkey->pkey.ptr != NULL)
{
if (pkey->type == EVP_PKEY_RSA)
RSA_free(pkey->pkey.rsa);
/* else memory leak */
}
pkey->type=type;
pkey->pkey.ptr=key;
return(1);
}
/* While I have a
* X509_set_pubkey() and X509_REQ_set_pubkey(), SPKI_set_pubkey() does
* not currently exist so here is a version of it.
* The next SSLeay release will probably have
* X509_set_pubkey(),
* X509_REQ_set_pubkey() and
* NETSCAPE_SPKI_set_pubkey()
* as macros calling the same function */
int SPKI_set_pubkey(x,pkey)
NETSCAPE_SPKI *x;
EVP_PKEY *pkey;
{
int ok=0;
X509_PUBKEY *pk;
X509_ALGOR *a;
ASN1_OBJECT *o;
unsigned char *s,*p;
int i;
if (x == NULL) return(0);
if ((pk=X509_PUBKEY_new()) == NULL) goto err;
a=pk->algor;
/* set the algorithm id */
if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
ASN1_OBJECT_free(a->algorithm);
a->algorithm=o;
/* Set the parameter list */
if ((a->parameter == NULL) || (a->parameter->type != V_ASN1_NULL))
{
ASN1_TYPE_free(a->parameter);
a->parameter=ASN1_TYPE_new();
a->parameter->type=V_ASN1_NULL;
}
i=i2d_PublicKey(pkey,NULL);
if ((s=(unsigned char *)malloc(i+1)) == NULL) goto err;
p=s;
i2d_PublicKey(pkey,&p);
if (!ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
free(s);
X509_PUBKEY_free(x->spkac->pubkey);
x->spkac->pubkey=pk;
pk=NULL;
ok=1;
err:
if (pk != NULL) X509_PUBKEY_free(pk);
return(ok);
}
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