9 #include <openssl/bio.h>
10 #include <openssl/err.h>
11 #include <openssl/rand.h>
14 #define PROG rand_main
16 /* -out file - write to file
17 * -rand file:file - PRNG seed files
18 * -egd file - PRNG seed from EGD named socket
19 * -base64 - encode output
20 * num - write 'num' bytes
23 int MAIN(int, char **);
25 int MAIN(int argc, char **argv)
30 char *inrand = NULL,*inegd=NULL;
38 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
39 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
43 while (!badopt && argv[++i] != NULL)
45 if (strcmp(argv[i], "-out") == 0)
47 if ((argv[i+1] != NULL) && (outfile == NULL))
52 else if (strcmp(argv[i], "-rand") == 0)
54 if ((argv[i+1] != NULL) && (inrand == NULL))
59 else if (strcmp(argv[i], "-egd") == 0)
61 if ((argv[i+1] != NULL) && (inegd == NULL))
66 else if (strcmp(argv[i], "-base64") == 0)
73 else if (isdigit((unsigned char)argv[i][0]))
77 r = sscanf(argv[i], "%d", &num);
78 if (r == 0 || num < 0)
93 BIO_printf(bio_err, "Usage: rand [options] num\n");
94 BIO_printf(bio_err, "where options are\n");
95 BIO_printf(bio_err, "-out file - write to file\n");
96 BIO_printf(bio_err, "-rand file%cfile%c... - seed PRNG from files\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
97 BIO_printf(bio_err, "-egd file - seed PRNG from EGD named socket\n");
98 BIO_printf(bio_err, "-base64 - encode output\n");
102 app_RAND_load_file(NULL, bio_err, (inrand != NULL || inegd != NULL));
104 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
105 app_RAND_load_files(inrand));
107 BIO_printf(bio_err,"%ld egd bytes loaded\n",
110 out = BIO_new(BIO_s_file());
114 r = BIO_write_filename(out, outfile);
116 r = BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
122 BIO *b64 = BIO_new(BIO_f_base64());
125 out = BIO_push(b64, out);
130 unsigned char buf[4096];
134 if (chunk > sizeof buf)
136 r = RAND_bytes(buf, chunk);
139 BIO_write(out, buf, chunk);
144 app_RAND_write_file(NULL, bio_err);
148 ERR_print_errors(bio_err);