#include <openssl/opensslconf.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/dsa.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
static struct {
const EVP_CIPHER *enc;
char *outfile;
char *passargout;
} cfg;
static const EVP_CIPHER *
get_cipher_by_name(char *name)
{
if (name == NULL || strcmp(name, "") == 0)
return (NULL);
#ifndef OPENSSL_NO_AES
else if (strcmp(name, "aes128") == 0)
return EVP_aes_128_cbc();
else if (strcmp(name, "aes192") == 0)
return EVP_aes_192_cbc();
else if (strcmp(name, "aes256") == 0)
return EVP_aes_256_cbc();
#endif
#ifndef OPENSSL_NO_CAMELLIA
else if (strcmp(name, "camellia128") == 0)
return EVP_camellia_128_cbc();
else if (strcmp(name, "camellia192") == 0)
return EVP_camellia_192_cbc();
else if (strcmp(name, "camellia256") == 0)
return EVP_camellia_256_cbc();
#endif
#ifndef OPENSSL_NO_DES
else if (strcmp(name, "des") == 0)
return EVP_des_cbc();
else if (strcmp(name, "des3") == 0)
return EVP_des_ede3_cbc();
#endif
#ifndef OPENSSL_NO_IDEA
else if (strcmp(name, "idea") == 0)
return EVP_idea_cbc();
#endif
else
return (NULL);
}
static int
set_enc(int argc, char **argv, int *argsused)
{
char *name = argv[0];
if (*name++ != '-')
return (1);
if ((cfg.enc = get_cipher_by_name(name)) == NULL)
return (1);
*argsused = 1;
return (0);
}
static const struct option gendsa_options[] = {
#ifndef OPENSSL_NO_AES
{
.name = "aes128",
.desc = "Encrypt PEM output with CBC AES",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
{
.name = "aes192",
.desc = "Encrypt PEM output with CBC AES",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
{
.name = "aes256",
.desc = "Encrypt PEM output with CBC AES",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
#endif
#ifndef OPENSSL_NO_CAMELLIA
{
.name = "camellia128",
.desc = "Encrypt PEM output with CBC Camellia",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
{
.name = "camellia192",
.desc = "Encrypt PEM output with CBC Camellia",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
{
.name = "camellia256",
.desc = "Encrypt PEM output with CBC Camellia",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
#endif
#ifndef OPENSSL_NO_DES
{
.name = "des",
.desc = "Encrypt the generated key with DES in CBC mode",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
{
.name = "des3",
.desc = "Encrypt the generated key with DES in EDE CBC mode (168 bit key)",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
#endif
#ifndef OPENSSL_NO_IDEA
{
.name = "idea",
.desc = "Encrypt the generated key with IDEA in CBC mode",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = set_enc,
},
#endif
{
.name = "out",
.argname = "file",
.desc = "Output the key to 'file'",
.type = OPTION_ARG,
.opt.arg = &cfg.outfile,
},
{
.name = "passout",
.argname = "src",
.desc = "Output file passphrase source",
.type = OPTION_ARG,
.opt.arg = &cfg.passargout,
},
{ NULL },
};
static void
gendsa_usage(void)
{
fprintf(stderr, "usage: gendsa [-aes128 | -aes192 | -aes256 |\n");
fprintf(stderr, " -camellia128 | -camellia192 | -camellia256 |\n");
fprintf(stderr, " -des | -des3 | -idea] [-out file] [-passout src]");
fprintf(stderr, " paramfile\n\n");
options_usage(gendsa_options);
fprintf(stderr, "\n");
}
int
gendsa_main(int argc, char **argv)
{
DSA *dsa = NULL;
int ret = 1;
char *dsaparams = NULL;
char *passout = NULL;
BIO *out = NULL, *in = NULL;
if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
perror("pledge");
exit(1);
}
memset(&cfg, 0, sizeof(cfg));
if (options_parse(argc, argv, gendsa_options, &dsaparams, NULL) != 0) {
gendsa_usage();
goto end;
}
if (dsaparams == NULL) {
gendsa_usage();
goto end;
}
if (!app_passwd(bio_err, NULL, cfg.passargout, NULL,
&passout)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
in = BIO_new(BIO_s_file());
if (!(BIO_read_filename(in, dsaparams))) {
perror(dsaparams);
goto end;
}
if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) {
BIO_printf(bio_err, "unable to load DSA parameter file\n");
goto end;
}
BIO_free(in);
in = NULL;
out = BIO_new(BIO_s_file());
if (out == NULL)
goto end;
if (cfg.outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
} else {
if (BIO_write_filename(out, cfg.outfile) <= 0) {
perror(cfg.outfile);
goto end;
}
}
BIO_printf(bio_err, "Generating DSA key, %d bits\n",
BN_num_bits(DSA_get0_p(dsa)));
if (!DSA_generate_key(dsa))
goto end;
if (!PEM_write_bio_DSAPrivateKey(out, dsa, cfg.enc, NULL, 0,
NULL, passout))
goto end;
ret = 0;
end:
if (ret != 0)
ERR_print_errors(bio_err);
BIO_free(in);
BIO_free_all(out);
DSA_free(dsa);
free(passout);
return (ret);
}
