2 * Copyright 2002-2023 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
11 #include <openssl/opensslconf.h>
12 #include <openssl/evp.h>
13 #include <openssl/encoder.h>
14 #include <openssl/decoder.h>
15 #include <openssl/core_names.h>
16 #include <openssl/core_dispatch.h>
17 #include <openssl/params.h>
18 #include <openssl/err.h>
22 #include "ec_common.h"
24 typedef enum OPTION_choice
{
26 OPT_INFORM
, OPT_OUTFORM
, OPT_ENGINE
, OPT_IN
, OPT_OUT
,
27 OPT_NOOUT
, OPT_TEXT
, OPT_PARAM_OUT
, OPT_PUBIN
, OPT_PUBOUT
,
28 OPT_PASSIN
, OPT_PASSOUT
, OPT_PARAM_ENC
, OPT_CONV_FORM
, OPT_CIPHER
,
29 OPT_NO_PUBLIC
, OPT_CHECK
, OPT_PROV_ENUM
32 const OPTIONS ec_options
[] = {
33 OPT_SECTION("General"),
34 {"help", OPT_HELP
, '-', "Display this summary"},
35 #ifndef OPENSSL_NO_ENGINE
36 {"engine", OPT_ENGINE
, 's', "Use engine, possibly a hardware device"},
40 {"in", OPT_IN
, 's', "Input file"},
41 {"inform", OPT_INFORM
, 'f', "Input format (DER/PEM/P12/ENGINE)"},
42 {"pubin", OPT_PUBIN
, '-', "Expect a public key in input file"},
43 {"passin", OPT_PASSIN
, 's', "Input file pass phrase source"},
44 {"check", OPT_CHECK
, '-', "check key consistency"},
45 {"", OPT_CIPHER
, '-', "Any supported cipher"},
46 {"param_enc", OPT_PARAM_ENC
, 's',
47 "Specifies the way the ec parameters are encoded"},
48 {"conv_form", OPT_CONV_FORM
, 's', "Specifies the point conversion form "},
50 OPT_SECTION("Output"),
51 {"out", OPT_OUT
, '>', "Output file"},
52 {"outform", OPT_OUTFORM
, 'F', "Output format - DER or PEM"},
53 {"noout", OPT_NOOUT
, '-', "Don't print key out"},
54 {"text", OPT_TEXT
, '-', "Print the key"},
55 {"param_out", OPT_PARAM_OUT
, '-', "Print the elliptic curve parameters"},
56 {"pubout", OPT_PUBOUT
, '-', "Output public key, not private"},
57 {"no_public", OPT_NO_PUBLIC
, '-', "exclude public key from private key"},
58 {"passout", OPT_PASSOUT
, 's', "Output file pass phrase source"},
64 int ec_main(int argc
, char **argv
)
66 OSSL_ENCODER_CTX
*ectx
= NULL
;
67 OSSL_DECODER_CTX
*dctx
= NULL
;
68 EVP_PKEY_CTX
*pctx
= NULL
;
69 EVP_PKEY
*eckey
= NULL
;
72 EVP_CIPHER
*enc
= NULL
;
73 char *infile
= NULL
, *outfile
= NULL
, *ciphername
= NULL
, *prog
;
74 char *passin
= NULL
, *passout
= NULL
, *passinarg
= NULL
, *passoutarg
= NULL
;
76 int informat
= FORMAT_UNDEF
, outformat
= FORMAT_PEM
, text
= 0, noout
= 0;
77 int pubin
= 0, pubout
= 0, param_out
= 0, ret
= 1, private = 0;
79 char *asn1_encoding
= NULL
;
80 char *point_format
= NULL
;
83 opt_set_unknown_name("cipher");
84 prog
= opt_init(argc
, argv
, ec_options
);
85 while ((o
= opt_next()) != OPT_EOF
) {
90 BIO_printf(bio_err
, "%s: Use -help for summary.\n", prog
);
97 if (!opt_format(opt_arg(), OPT_FMT_ANY
, &informat
))
104 if (!opt_format(opt_arg(), OPT_FMT_PEMDER
, &outformat
))
126 passinarg
= opt_arg();
129 passoutarg
= opt_arg();
132 e
= setup_engine(opt_arg(), 0);
135 ciphername
= opt_unknown();
138 point_format
= opt_arg();
139 if (!opt_string(point_format
, point_format_options
))
143 asn1_encoding
= opt_arg();
144 if (!opt_string(asn1_encoding
, asn1_encoding_options
))
154 if (!opt_provider(o
))
160 /* No extra arguments. */
161 if (!opt_check_rest_arg(NULL
))
164 if (!opt_cipher(ciphername
, &enc
))
166 private = !pubin
&& (text
|| (!param_out
&& !pubout
));
168 if (!app_passwd(passinarg
, passoutarg
, &passin
, &passout
)) {
169 BIO_printf(bio_err
, "Error getting passwords\n");
173 BIO_printf(bio_err
, "read EC key\n");
176 eckey
= load_pubkey(infile
, informat
, 1, passin
, e
, "public key");
178 eckey
= load_key(infile
, informat
, 1, passin
, e
, "private key");
181 BIO_printf(bio_err
, "unable to load Key\n");
185 out
= bio_open_owner(outfile
, outformat
, private);
190 && !EVP_PKEY_set_utf8_string_param(
191 eckey
, OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT
,
193 BIO_printf(bio_err
, "unable to set point conversion format\n");
197 if (asn1_encoding
!= NULL
198 && !EVP_PKEY_set_utf8_string_param(
199 eckey
, OSSL_PKEY_PARAM_EC_ENCODING
, asn1_encoding
)) {
200 BIO_printf(bio_err
, "unable to set asn1 encoding format\n");
205 if (!EVP_PKEY_set_int_param(eckey
, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC
, 0)) {
206 BIO_printf(bio_err
, "unable to disable public key encoding\n");
210 if (!EVP_PKEY_set_int_param(eckey
, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC
, 1)) {
211 BIO_printf(bio_err
, "unable to enable public key encoding\n");
217 assert(pubin
|| private);
218 if ((pubin
&& EVP_PKEY_print_public(out
, eckey
, 0, NULL
) <= 0)
219 || (!pubin
&& EVP_PKEY_print_private(out
, eckey
, 0, NULL
) <= 0)) {
220 BIO_printf(bio_err
, "unable to print EC key\n");
226 pctx
= EVP_PKEY_CTX_new_from_pkey(NULL
, eckey
, NULL
);
228 BIO_printf(bio_err
, "unable to check EC key\n");
231 if (EVP_PKEY_check(pctx
) <= 0)
232 BIO_printf(bio_err
, "EC Key Invalid!\n");
234 BIO_printf(bio_err
, "EC Key valid.\n");
235 ERR_print_errors(bio_err
);
240 const char *output_type
= outformat
== FORMAT_ASN1
? "DER" : "PEM";
241 const char *output_structure
= "type-specific";
243 BIO_printf(bio_err
, "writing EC key\n");
245 selection
= OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS
;
246 } else if (pubin
|| pubout
) {
247 selection
= OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS
248 | OSSL_KEYMGMT_SELECT_PUBLIC_KEY
;
249 output_structure
= "SubjectPublicKeyInfo";
251 selection
= OSSL_KEYMGMT_SELECT_ALL
;
255 ectx
= OSSL_ENCODER_CTX_new_for_pkey(eckey
, selection
,
256 output_type
, output_structure
,
259 OSSL_ENCODER_CTX_set_cipher(ectx
, EVP_CIPHER_get0_name(enc
), NULL
);
260 /* Default passphrase prompter */
261 OSSL_ENCODER_CTX_set_passphrase_ui(ectx
, get_ui_method(), NULL
);
263 /* When passout given, override the passphrase prompter */
264 OSSL_ENCODER_CTX_set_passphrase(ectx
,
265 (const unsigned char *)passout
,
268 if (!OSSL_ENCODER_to_bio(ectx
, out
)) {
269 BIO_printf(bio_err
, "unable to write EC key\n");
277 ERR_print_errors(bio_err
);
279 EVP_PKEY_free(eckey
);
280 EVP_CIPHER_free(enc
);
281 OSSL_ENCODER_CTX_free(ectx
);
282 OSSL_DECODER_CTX_free(dctx
);
283 EVP_PKEY_CTX_free(pctx
);
286 OPENSSL_clear_free(passin
, strlen(passin
));
288 OPENSSL_clear_free(passout
, strlen(passout
));