1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/* 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);
}
|
