#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_EC
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
static struct {
int asn1_flag;
const EVP_CIPHER *enc;
point_conversion_form_t form;
char *infile;
int informat;
char *outfile;
int outformat;
int new_asn1_flag;
int new_form;
int noout;
int param_out;
char *passargin;
char *passargout;
int pubin;
int pubout;
int text;
} cfg;
static int
ec_opt_enc(int argc, char **argv, int *argsused)
{
char *name = argv[0];
if (*name++ != '-')
return (1);
if ((cfg.enc = EVP_get_cipherbyname(name)) != NULL) {
*argsused = 1;
return (0);
}
return (1);
}
static int
ec_opt_form(char *arg)
{
if (strcmp(arg, "compressed") == 0)
cfg.form = POINT_CONVERSION_COMPRESSED;
else if (strcmp(arg, "uncompressed") == 0)
cfg.form = POINT_CONVERSION_UNCOMPRESSED;
else if (strcmp(arg, "hybrid") == 0)
cfg.form = POINT_CONVERSION_HYBRID;
else {
fprintf(stderr, "Invalid point conversion: %s\n", arg);
return (1);
}
cfg.new_form = 1;
return (0);
}
static int
ec_opt_named(char *arg)
{
if (strcmp(arg, "named_curve") == 0)
cfg.asn1_flag = OPENSSL_EC_NAMED_CURVE;
else if (strcmp(arg, "explicit") == 0)
cfg.asn1_flag = 0;
else {
fprintf(stderr, "Invalid curve type: %s\n", arg);
return (1);
}
cfg.new_asn1_flag = 1;
return (0);
}
static const struct option ec_options[] = {
{
.name = "conv_form",
.argname = "form",
.desc = "Specify the point conversion form (default"
" \"named_curve\")",
.type = OPTION_ARG_FUNC,
.opt.argfunc = ec_opt_form,
},
{
.name = "in",
.argname = "file",
.desc = "Input file (default stdin)",
.type = OPTION_ARG,
.opt.arg = &cfg.infile,
},
{
.name = "inform",
.argname = "format",
.desc = "Input format (DER or PEM (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.informat,
},
{
.name = "noout",
.desc = "No output",
.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 or PEM (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.outformat,
},
{
.name = "param_enc",
.argname = "type",
.desc = "Specify the way the ec parameters are encoded"
" (default \"uncompressed\")",
.type = OPTION_ARG_FUNC,
.opt.argfunc = ec_opt_named,
},
{
.name = "param_out",
.desc = "Print the elliptic curve parameters",
.type = OPTION_FLAG,
.opt.flag = &cfg.param_out,
},
{
.name = "passin",
.argname = "source",
.desc = "Input file passphrase source",
.type = OPTION_ARG,
.opt.arg = &cfg.passargin,
},
{
.name = "passout",
.argname = "source",
.desc = "Output file passphrase source",
.type = OPTION_ARG,
.opt.arg = &cfg.passargout,
},
{
.name = "pubin",
.desc = "Read public key instead of private key from input",
.type = OPTION_FLAG,
.opt.flag = &cfg.pubin,
},
{
.name = "pubout",
.desc = "Output public key instead of private key in output",
.type = OPTION_FLAG,
.opt.flag = &cfg.pubout,
},
{
.name = "text",
.desc = "Print the public/private key components and parameters",
.type = OPTION_FLAG,
.opt.flag = &cfg.text,
},
{
.name = NULL,
.desc = "Cipher to encrypt the output if using PEM format",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = ec_opt_enc,
},
{ NULL },
};
static void
ec_usage(void)
{
int n = 0;
fprintf(stderr,
"usage: ec [-conv_form form] [-in file]\n"
" [-inform format] [-noout] [-out file] [-outform format]\n"
" [-param_enc type] [-param_out] [-passin file]\n"
" [-passout file] [-pubin] [-pubout] [-text] [-ciphername]\n\n");
options_usage(ec_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
ec_main(int argc, char **argv)
{
int ret = 1;
EC_KEY *eckey = NULL;
const EC_GROUP *group;
int i;
BIO *in = NULL, *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.asn1_flag = OPENSSL_EC_NAMED_CURVE;
cfg.form = POINT_CONVERSION_UNCOMPRESSED;
cfg.informat = FORMAT_PEM;
cfg.outformat = FORMAT_PEM;
if (options_parse(argc, argv, ec_options, NULL, NULL) != 0) {
ec_usage();
goto end;
}
if (!app_passwd(bio_err, cfg.passargin, cfg.passargout,
&passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
in = BIO_new(BIO_s_file());
out = BIO_new(BIO_s_file());
if (in == NULL || out == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (cfg.infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, cfg.infile) <= 0) {
perror(cfg.infile);
goto end;
}
}
BIO_printf(bio_err, "read EC key\n");
if (cfg.informat == FORMAT_ASN1) {
if (cfg.pubin)
eckey = d2i_EC_PUBKEY_bio(in, NULL);
else
eckey = d2i_ECPrivateKey_bio(in, NULL);
} else if (cfg.informat == FORMAT_PEM) {
if (cfg.pubin)
eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL,
NULL);
else
eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL,
passin);
} else {
BIO_printf(bio_err, "bad input format specified for key\n");
goto end;
}
if (eckey == NULL) {
BIO_printf(bio_err, "unable to load Key\n");
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;
}
}
group = EC_KEY_get0_group(eckey);
if (cfg.new_form)
EC_KEY_set_conv_form(eckey, cfg.form);
if (cfg.new_asn1_flag)
EC_KEY_set_asn1_flag(eckey, cfg.asn1_flag);
if (cfg.text)
if (!EC_KEY_print(out, eckey, 0)) {
perror(cfg.outfile);
ERR_print_errors(bio_err);
goto end;
}
if (cfg.noout) {
ret = 0;
goto end;
}
BIO_printf(bio_err, "writing EC key\n");
if (cfg.outformat == FORMAT_ASN1) {
if (cfg.param_out)
i = i2d_ECPKParameters_bio(out, group);
else if (cfg.pubin || cfg.pubout)
i = i2d_EC_PUBKEY_bio(out, eckey);
else
i = i2d_ECPrivateKey_bio(out, eckey);
} else if (cfg.outformat == FORMAT_PEM) {
if (cfg.param_out)
i = PEM_write_bio_ECPKParameters(out, group);
else if (cfg.pubin || cfg.pubout)
i = PEM_write_bio_EC_PUBKEY(out, eckey);
else
i = PEM_write_bio_ECPrivateKey(out, eckey,
cfg.enc, NULL, 0, NULL, passout);
} else {
BIO_printf(bio_err, "bad output format specified for "
"outfile\n");
goto end;
}
if (!i) {
BIO_printf(bio_err, "unable to write private key\n");
ERR_print_errors(bio_err);
} else
ret = 0;
end:
BIO_free(in);
BIO_free_all(out);
EC_KEY_free(eckey);
free(passin);
free(passout);
return (ret);
}
#endif
