2 * Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include <openssl/opensslconf.h>
17 #include <openssl/bio.h>
18 #include <openssl/err.h>
19 #include <openssl/evp.h>
20 #include <openssl/pem.h>
22 static OPT_PAIR conv_forms[] = {
23 {"compressed", POINT_CONVERSION_COMPRESSED},
24 {"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
25 {"hybrid", POINT_CONVERSION_HYBRID},
29 static OPT_PAIR param_enc[] = {
30 {"named_curve", OPENSSL_EC_NAMED_CURVE},
35 typedef enum OPTION_choice {
36 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
37 OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
38 OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT,
39 OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER,
40 OPT_NO_PUBLIC, OPT_CHECK, OPT_PROV_ENUM
43 const OPTIONS ec_options[] = {
44 OPT_SECTION("General"),
45 {"help", OPT_HELP, '-', "Display this summary"},
46 #ifndef OPENSSL_NO_ENGINE
47 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
51 {"in", OPT_IN, 's', "Input file"},
52 {"inform", OPT_INFORM, 'f', "Input format - DER or PEM"},
53 {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
54 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
55 {"check", OPT_CHECK, '-', "check key consistency"},
56 {"", OPT_CIPHER, '-', "Any supported cipher"},
57 {"param_enc", OPT_PARAM_ENC, 's',
58 "Specifies the way the ec parameters are encoded"},
59 {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
61 OPT_SECTION("Output"),
62 {"out", OPT_OUT, '>', "Output file"},
63 {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
64 {"noout", OPT_NOOUT, '-', "Don't print key out"},
65 {"text", OPT_TEXT, '-', "Print the key"},
66 {"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"},
67 {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
68 {"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"},
69 {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
75 int ec_main(int argc, char **argv)
77 BIO *in = NULL, *out = NULL;
80 const EC_GROUP *group;
81 const EVP_CIPHER *enc = NULL;
82 point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
83 char *infile = NULL, *outfile = NULL, *prog;
84 char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
86 int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_form = 0, new_asn1_flag = 0;
87 int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
88 int pubin = 0, pubout = 0, param_out = 0, i, ret = 1, private = 0;
89 int no_public = 0, check = 0;
91 prog = opt_init(argc, argv, ec_options);
92 while ((o = opt_next()) != OPT_EOF) {
97 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
100 opt_help(ec_options);
104 if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
111 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
133 passinarg = opt_arg();
136 passoutarg = opt_arg();
139 e = setup_engine(opt_arg(), 0);
142 if (!opt_cipher(opt_unknown(), &enc))
146 if (!opt_pair(opt_arg(), conv_forms, &i))
152 if (!opt_pair(opt_arg(), param_enc, &i))
164 if (!opt_provider(o))
169 argc = opt_num_rest();
173 private = param_out || pubin || pubout ? 0 : 1;
177 if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
178 BIO_printf(bio_err, "Error getting passwords\n");
182 if (informat != FORMAT_ENGINE) {
183 in = bio_open_default(infile, 'r', informat);
188 BIO_printf(bio_err, "read EC key\n");
189 if (informat == FORMAT_ASN1) {
191 eckey = d2i_EC_PUBKEY_bio(in, NULL);
193 eckey = d2i_ECPrivateKey_bio(in, NULL);
194 } else if (informat == FORMAT_ENGINE) {
197 pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
199 pkey = load_key(infile, informat, 1, passin, e, "Private Key");
201 eckey = EVP_PKEY_get1_EC_KEY(pkey);
206 eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL, NULL);
208 eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL, passin);
211 BIO_printf(bio_err, "unable to load Key\n");
212 ERR_print_errors(bio_err);
216 out = bio_open_owner(outfile, outformat, private);
220 group = EC_KEY_get0_group(eckey);
223 EC_KEY_set_conv_form(eckey, form);
226 EC_KEY_set_asn1_flag(eckey, asn1_flag);
229 EC_KEY_set_enc_flags(eckey, EC_PKEY_NO_PUBKEY);
232 assert(pubin || private);
233 if (!EC_KEY_print(out, eckey, 0)) {
235 ERR_print_errors(bio_err);
241 if (EC_KEY_check_key(eckey) == 1) {
242 BIO_printf(bio_err, "EC Key valid.\n");
244 BIO_printf(bio_err, "EC Key Invalid!\n");
245 ERR_print_errors(bio_err);
254 BIO_printf(bio_err, "writing EC key\n");
255 if (outformat == FORMAT_ASN1) {
257 i = i2d_ECPKParameters_bio(out, group);
258 } else if (pubin || pubout) {
259 i = i2d_EC_PUBKEY_bio(out, eckey);
262 i = i2d_ECPrivateKey_bio(out, eckey);
266 i = PEM_write_bio_ECPKParameters(out, group);
267 } else if (pubin || pubout) {
268 i = PEM_write_bio_EC_PUBKEY(out, eckey);
271 i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
272 NULL, 0, NULL, passout);
277 BIO_printf(bio_err, "unable to write private key\n");
278 ERR_print_errors(bio_err);
287 OPENSSL_free(passin);
288 OPENSSL_free(passout);