source: trunk/third/moira/reg_svr/genkey.c @ 24319

Revision 24319, 3.0 KB checked in by broder, 15 years ago (diff)
New Moira snapshot from SVN.
RevLine 
[24319]1/* $Id: genkey.c 3956 2010-01-05 20:56:56Z zacheiss $
[23095]2 *
3 * Utility program to generate a public/private key pair
4 *
5 * Copyright (C) 1998 by the Massachusetts Institute of Technology
6 * For copying and distribution information, please see the file
7 * <mit-copyright.h>.
8 *
9 */
10
11#include <mit-copyright.h>
12#include <moira.h>
13#include "reg_svr.h"
14
15#include <sys/param.h>
16
17#include <errno.h>
18#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21
22#include <com_err.h>
23
24/* RSARef includes */
25#include "global.h"
26#include "rsaref.h"
27
[24319]28RCSID("$HeadURL: svn+ssh://svn.mit.edu/moira/trunk/moira/reg_svr/genkey.c $ $Id: genkey.c 3956 2010-01-05 20:56:56Z zacheiss $");
[23095]29
30void printhex(FILE *out, unsigned char *buf, int len);
31
32int main(int argc, char **argv)
33{
34  R_RSA_PRIVATE_KEY private;
35  R_RSA_PUBLIC_KEY public;
36  R_RSA_PROTO_KEY proto;
37  R_RANDOM_STRUCT random;
38  FILE *in, *out;
39  int needed;
40  unsigned char *buf;
41  char pubname[MAXPATHLEN], oldname[MAXPATHLEN];
42  char *whoami = argv[0], *inname = argv[1], *outname = argv[2];
43
44  if (strchr(whoami, '/'))
45    whoami = strrchr(whoami, '/');
46
47  if (argc != 3)
48    {
49      com_err(NULL, 0, "Usage: %s infile outfile\n"
50              "where infile is a file of random data", whoami);
51      exit(1);
52    }
53  in = fopen(inname, "r");
54  if (!in)
55    {
56      com_err(whoami, errno, "trying to open %s", inname);
57      exit(1);
58    }
59
60  R_RandomInit(&random);
61  R_GetRandomBytesNeeded(&needed, &random);
62  buf = malloc(needed);
63  if (fread(buf, needed, 1, in) != 1)
64    {
65      com_err(whoami, 0, "Not enough random input data: need %d bytes\n",
66              needed);
67      exit(1);
68    }
69  R_RandomUpdate(&random, buf, needed);
70
71  proto.bits = 1024;
72  proto.useFermat4 = 1;
73 
74  if (R_GeneratePEMKeys(&public, &private, &proto, &random))
75    {
76      com_err(whoami, 0, "Couldn't generate key");
77      exit(1);
78    }
79
80  sprintf(oldname, "%s.old", outname);
81  rename(outname, oldname);
82  out = fopen(outname, "w");
83  if (!out)
84    {
85      com_err(whoami, errno, "opening %s", outname);
86      exit(1);
87    }
88  if (fwrite(&private, sizeof(private), 1, out) != 1)
89    {
90      com_err(whoami, errno, "writing %s", outname);
91      exit(1);
92    }
93  fclose(out);
94
95  sprintf(pubname, "%s.pub", outname);
96  sprintf(oldname, "%s.old", pubname);
97  rename(pubname, oldname);
98  out = fopen(pubname, "w");
99  if (!out)
100    {
101      com_err(whoami, errno, "opening %s", pubname);
102      exit(1);
103    }
104  if (fwrite(&public, sizeof(public), 1, out) != 1)
105    {
106      com_err(whoami, errno, "writing %s", pubname);
107      exit(1);
108    }
109  fclose(out);
110
111  sprintf(pubname, "%s.pub.txt", outname);
112  out = fopen(pubname, "w");
113  if (!out)
114    {
115      com_err(whoami, errno, "opening %s", pubname);
116      exit(1);
117    }
118  printhex(out, public.modulus, MAX_RSA_MODULUS_LEN);
119  fclose(out);
120
121  exit(0);
122}
123
124char hexd[] = { '0', '1', '2', '3', '4', '5', '6', '7',
125                '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
126
127void printhex(FILE *out, unsigned char *buf, int len)
128{
129  while (len--)
130    {
131      fprintf(out, "%c%c", hexd[*buf>>4], hexd[*buf%0x10]);
132      buf++;
133    }
134}
Note: See TracBrowser for help on using the repository browser.