demos/spkigen.c

   1 /* NOCW */
   2 /* demos/spkigen.c
   3  * 18-Mar-1997 - eay - A quick hack :-)
   4  *              version 1.1, it would probably help to save or load the
   5  *              private key :-)
   6  */
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include "err.h"
  10 #include "asn1.h"
  11 #include "objects.h"
  12 #include "evp.h"
  13 #include "x509.h"
  14 #include "pem.h"
  15
  16 /* The following two don't exist in SSLeay but they are in here as
  17  * examples */
  18 #define PEM_write_SPKI(fp,x) \
  19         PEM_ASN1_write((int (*)())i2d_NETSCAPE_SPKI,"SPKI",fp,\
  20                         (char *)x,NULL,NULL,0,NULL)
  21 int SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey);
  22
  23 /* These are defined in the next version of SSLeay */
  24 int EVP_PKEY_assign(EVP_PKEY *pkey, int type,char *key);
  25 #define RSA_F4  0x10001
  26 #define EVP_PKEY_assign_RSA(pkey,rsa) EVP_PKEY_assign((pkey),EVP_PKEY_RSA,\
  27                                         (char *)(rsa))
  28
  29 int main(argc,argv)
  30 int argc;
  31 char *argv[];
  32         {
  33         RSA *rsa=NULL;
  34         NETSCAPE_SPKI *spki=NULL;
  35         EVP_PKEY *pkey=NULL;
  36         char buf[128];
  37         int ok=0,i;
  38         FILE *fp;
  39
  40         pkey=EVP_PKEY_new();
  41
  42         if (argc < 2)
  43                 {
  44                 /* Generate an RSA key, the random state should have been seeded
  45                  * with lots of calls to RAND_seed(....) */
  46                 fprintf(stderr,"generating RSA key, could take some time...\n");
  47                 if ((rsa=RSA_generate_key(512,RSA_F4,NULL)) == NULL) goto err;
  48                 }
  49         else
  50                 {
  51                 if ((fp=fopen(argv[1],"r")) == NULL)
  52                         { perror(argv[1]); goto err; }
  53                 if ((rsa=PEM_read_RSAPrivateKey(fp,NULL,NULL)) == NULL)
  54                         goto err;
  55                 fclose(fp);
  56                 }
  57
  58         if (!EVP_PKEY_assign_RSA(pkey,rsa)) goto err;
  59         rsa=NULL;
  60
  61         /* lets make the spki and set the public key and challenge */
  62         if ((spki=NETSCAPE_SPKI_new()) == NULL) goto err;
  63
  64         if (!SPKI_set_pubkey(spki,pkey)) goto err;
  65
  66         fprintf(stderr,"please enter challenge string:");
  67         fflush(stderr);
  68         fgets(buf,120,stdin);
  69         i=strlen(buf);
  70         if (i > 0) buf[--i]='\0';
  71         if (!ASN1_STRING_set((ASN1_STRING *)spki->spkac->challenge,
  72                 buf,i)) goto err;
  73
  74         if (!NETSCAPE_SPKI_sign(spki,pkey,EVP_md5())) goto err;
  75         PEM_write_SPKI(stdout,spki);
  76         if (argc < 2)
  77                 PEM_write_RSAPrivateKey(stdout,pkey->pkey.rsa,NULL,NULL,0,NULL);
  78
  79         ok=1;
  80 err:
  81         if (!ok)
  82                 {
  83                 fprintf(stderr,"something bad happened....");
  84                 ERR_print_errors_fp(stderr);
  85                 }
  86         NETSCAPE_SPKI_free(spki);
  87         EVP_PKEY_free(pkey);
  88         exit(!ok);
  89         }
  90
  91 /* This function is in the next version of SSLeay */
  92 int EVP_PKEY_assign(pkey,type,key)
  93 EVP_PKEY *pkey;
  94 int type;
  95 char *key;
  96         {
  97         if (pkey == NULL) return(0);
  98         if (pkey->pkey.ptr != NULL)
  99                 {
 100                 if (pkey->type == EVP_PKEY_RSA)
 101                         RSA_free(pkey->pkey.rsa);
 102                 /* else memory leak */
 103                 }
 104         pkey->type=type;
 105         pkey->pkey.ptr=key;
 106         return(1);
 107         }
 108
 109 /* While I have a
 110  * X509_set_pubkey() and X509_REQ_set_pubkey(), SPKI_set_pubkey() does
 111  * not currently exist so here is a version of it.
 112  * The next SSLeay release will probably have
 113  * X509_set_pubkey(),
 114  * X509_REQ_set_pubkey() and
 115  * NETSCAPE_SPKI_set_pubkey()
 116  * as macros calling the same function */
 117 int SPKI_set_pubkey(x,pkey)
 118 NETSCAPE_SPKI *x;
 119 EVP_PKEY *pkey;
 120         {
 121         int ok=0;
 122         X509_PUBKEY *pk;
 123         X509_ALGOR *a;
 124         ASN1_OBJECT *o;
 125         unsigned char *s,*p;
 126         int i;
 127
 128         if (x == NULL) return(0);
 129
 130         if ((pk=X509_PUBKEY_new()) == NULL) goto err;
 131         a=pk->algor;
 132
 133         /* set the algorithm id */
 134         if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
 135         ASN1_OBJECT_free(a->algorithm);
 136         a->algorithm=o;
 137
 138         /* Set the parameter list */
 139         if ((a->parameter == NULL) || (a->parameter->type != V_ASN1_NULL))
 140                 {
 141                 ASN1_TYPE_free(a->parameter);
 142                 a->parameter=ASN1_TYPE_new();
 143                 a->parameter->type=V_ASN1_NULL;
 144                 }
 145         i=i2d_PublicKey(pkey,NULL);
 146         if ((s=(unsigned char *)malloc(i+1)) == NULL) goto err;
 147         p=s;
 148         i2d_PublicKey(pkey,&p);
 149         if (!ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
 150         free(s);
 151
 152         X509_PUBKEY_free(x->spkac->pubkey);
 153         x->spkac->pubkey=pk;
 154         pk=NULL;
 155         ok=1;
 156 err:
 157         if (pk != NULL) X509_PUBKEY_free(pk);
 158         return(ok);
 159         }
 160