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Commit | Line | Data |
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b50f996d | 1 | /* $Id$ |
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 | ||
28 | RCSID("$Header$"); | |
29 | ||
30 | void printhex(FILE *out, unsigned char *buf, int len); | |
31 | ||
32 | int 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 | ||
124 | char hexd[] = { '0', '1', '2', '3', '4', '5', '6', '7', | |
125 | '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; | |
126 | ||
127 | void 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 | } |