#include <openssl/opensslconf.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <openssl/x509.h>
static struct {
int check;
const EVP_CIPHER *enc;
char *infile;
int informat;
int modulus;
int noout;
char *outfile;
int outformat;
char *passargin;
char *passargout;
int pubin;
int pubout;
int pvk_encr;
int text;
} cfg;
static int
rsa_opt_cipher(int argc, char **argv, int *argsused)
{
char *name = argv[0];
if (*name++ != '-')
return (1);
if ((cfg.enc = EVP_get_cipherbyname(name)) == NULL) {
fprintf(stderr, "Invalid cipher '%s'\n", name);
return (1);
}
*argsused = 1;
return (0);
}
static const struct option rsa_options[] = {
{
.name = "check",
.desc = "Check consistency of RSA private key",
.type = OPTION_FLAG,
.opt.flag = &cfg.check,
},
{
.name = "in",
.argname = "file",
.desc = "Input file (default stdin)",
.type = OPTION_ARG,
.opt.arg = &cfg.infile,
},
{
.name = "inform",
.argname = "format",
.desc = "Input format (DER, NET or PEM (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.informat,
},
{
.name = "modulus",
.desc = "Print the RSA key modulus",
.type = OPTION_FLAG,
.opt.flag = &cfg.modulus,
},
{
.name = "noout",
.desc = "Do not print encoded version of the key",
.type = OPTION_FLAG,
.opt.flag = &cfg.noout,
},
{
.name = "out",
.argname = "file",
.desc = "Output file (default stdout)",
.type = OPTION_ARG,
.opt.arg = &cfg.outfile,
},
{
.name = "outform",
.argname = "format",
.desc = "Output format (DER, NET or PEM (default PEM))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.outformat,
},
{
.name = "passin",
.argname = "src",
.desc = "Input file passphrase source",
.type = OPTION_ARG,
.opt.arg = &cfg.passargin,
},
{
.name = "passout",
.argname = "src",
.desc = "Output file passphrase source",
.type = OPTION_ARG,
.opt.arg = &cfg.passargout,
},
{
.name = "pubin",
.desc = "Expect a public key (default private key)",
.type = OPTION_VALUE,
.value = 1,
.opt.value = &cfg.pubin,
},
{
.name = "pubout",
.desc = "Output a public key (default private key)",
.type = OPTION_VALUE,
.value = 1,
.opt.value = &cfg.pubout,
},
{
.name = "pvk-none",
.type = OPTION_VALUE,
.value = 0,
.opt.value = &cfg.pvk_encr,
},
{
.name = "pvk-strong",
.type = OPTION_VALUE,
.value = 2,
.opt.value = &cfg.pvk_encr,
},
{
.name = "pvk-weak",
.type = OPTION_VALUE,
.value = 1,
.opt.value = &cfg.pvk_encr,
},
{
.name = "RSAPublicKey_in",
.type = OPTION_VALUE,
.value = 2,
.opt.value = &cfg.pubin,
},
{
.name = "RSAPublicKey_out",
.type = OPTION_VALUE,
.value = 2,
.opt.value = &cfg.pubout,
},
{
.name = "text",
.desc = "Print in plain text in addition to encoded",
.type = OPTION_FLAG,
.opt.flag = &cfg.text,
},
{
.name = NULL,
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = rsa_opt_cipher,
},
{ NULL }
};
static void
rsa_usage(void)
{
int n = 0;
fprintf(stderr,
"usage: rsa [-ciphername] [-check] [-in file] "
"[-inform fmt]\n"
" [-modulus] [-noout] [-out file] [-outform fmt] "
"[-passin src]\n"
" [-passout src] [-pubin] [-pubout] [-text]\n\n");
options_usage(rsa_options);
fprintf(stderr, "\n");
fprintf(stderr, "Valid ciphername values:\n\n");
OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, show_cipher, &n);
fprintf(stderr, "\n");
}
int
rsa_main(int argc, char **argv)
{
int ret = 1;
RSA *rsa = NULL;
int i;
BIO *out = NULL;
char *passin = NULL, *passout = NULL;
if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
perror("pledge");
exit(1);
}
memset(&cfg, 0, sizeof(cfg));
cfg.pvk_encr = 2;
cfg.informat = FORMAT_PEM;
cfg.outformat = FORMAT_PEM;
if (options_parse(argc, argv, rsa_options, NULL, NULL) != 0) {
rsa_usage();
goto end;
}
if (!app_passwd(bio_err, cfg.passargin, cfg.passargout,
&passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
if (cfg.check && cfg.pubin) {
BIO_printf(bio_err, "Only private keys can be checked\n");
goto end;
}
out = BIO_new(BIO_s_file());
{
EVP_PKEY *pkey;
if (cfg.pubin) {
int tmpformat = -1;
if (cfg.pubin == 2) {
if (cfg.informat == FORMAT_PEM)
tmpformat = FORMAT_PEMRSA;
else if (cfg.informat == FORMAT_ASN1)
tmpformat = FORMAT_ASN1RSA;
} else
tmpformat = cfg.informat;
pkey = load_pubkey(bio_err, cfg.infile,
tmpformat, 1, passin, "Public Key");
} else
pkey = load_key(bio_err, cfg.infile,
cfg.informat, 1, passin, "Private Key");
if (pkey != NULL)
rsa = EVP_PKEY_get1_RSA(pkey);
EVP_PKEY_free(pkey);
}
if (rsa == NULL) {
ERR_print_errors(bio_err);
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;
}
}
if (cfg.text)
if (!RSA_print(out, rsa, 0)) {
perror(cfg.outfile);
ERR_print_errors(bio_err);
goto end;
}
if (cfg.modulus) {
BIO_printf(out, "Modulus=");
BN_print(out, RSA_get0_n(rsa));
BIO_printf(out, "\n");
}
if (cfg.check) {
int r = RSA_check_key(rsa);
if (r == 1)
BIO_printf(out, "RSA key ok\n");
else if (r == 0) {
unsigned long err;
while ((err = ERR_peek_error()) != 0 &&
ERR_GET_LIB(err) == ERR_LIB_RSA &&
ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) {
BIO_printf(out, "RSA key error: %s\n",
ERR_reason_error_string(err));
ERR_get_error();
}
}
if (r == -1 || ERR_peek_error() != 0) {
ERR_print_errors(bio_err);
goto end;
}
}
if (cfg.noout) {
ret = 0;
goto end;
}
BIO_printf(bio_err, "writing RSA key\n");
if (cfg.outformat == FORMAT_ASN1) {
if (cfg.pubout || cfg.pubin) {
if (cfg.pubout == 2)
i = i2d_RSAPublicKey_bio(out, rsa);
else
i = i2d_RSA_PUBKEY_bio(out, rsa);
} else
i = i2d_RSAPrivateKey_bio(out, rsa);
} else if (cfg.outformat == FORMAT_PEM) {
if (cfg.pubout || cfg.pubin) {
if (cfg.pubout == 2)
i = PEM_write_bio_RSAPublicKey(out, rsa);
else
i = PEM_write_bio_RSA_PUBKEY(out, rsa);
} else
i = PEM_write_bio_RSAPrivateKey(out, rsa,
cfg.enc, NULL, 0, NULL, passout);
#if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
} else if (cfg.outformat == FORMAT_MSBLOB ||
cfg.outformat == FORMAT_PVK) {
EVP_PKEY *pk;
pk = EVP_PKEY_new();
EVP_PKEY_set1_RSA(pk, rsa);
if (cfg.outformat == FORMAT_PVK)
i = i2b_PVK_bio(out, pk, cfg.pvk_encr, 0,
passout);
else if (cfg.pubin || cfg.pubout)
i = i2b_PublicKey_bio(out, pk);
else
i = i2b_PrivateKey_bio(out, pk);
EVP_PKEY_free(pk);
#endif
} else {
BIO_printf(bio_err,
"bad output format specified for outfile\n");
goto end;
}
if (i <= 0) {
BIO_printf(bio_err, "unable to write key\n");
ERR_print_errors(bio_err);
} else
ret = 0;
end:
BIO_free_all(out);
RSA_free(rsa);
free(passin);
free(passout);
return (ret);
}
