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- #include <string.h>
- #include <openssl/opensslconf.h>
- #include <openssl/evp.h>
- #include <openssl/encoder.h>
- #include <openssl/decoder.h>
- #include <openssl/core_names.h>
- #include <openssl/core_dispatch.h>
- #include <openssl/params.h>
- #include <openssl/err.h>
- #include "apps.h"
- #include "progs.h"
- #include "ec_common.h"
- typedef enum OPTION_choice {
- OPT_COMMON,
- OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
- OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT,
- OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER,
- OPT_NO_PUBLIC, OPT_CHECK, OPT_PROV_ENUM
- } OPTION_CHOICE;
- const OPTIONS ec_options[] = {
- OPT_SECTION("General"),
- {"help", OPT_HELP, '-', "Display this summary"},
- #ifndef OPENSSL_NO_ENGINE
- {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
- #endif
- OPT_SECTION("Input"),
- {"in", OPT_IN, 's', "Input file"},
- {"inform", OPT_INFORM, 'f', "Input format (DER/PEM/P12/ENGINE)"},
- {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
- {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
- {"check", OPT_CHECK, '-', "check key consistency"},
- {"", OPT_CIPHER, '-', "Any supported cipher"},
- {"param_enc", OPT_PARAM_ENC, 's',
- "Specifies the way the ec parameters are encoded"},
- {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
- OPT_SECTION("Output"),
- {"out", OPT_OUT, '>', "Output file"},
- {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
- {"noout", OPT_NOOUT, '-', "Don't print key out"},
- {"text", OPT_TEXT, '-', "Print the key"},
- {"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"},
- {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
- {"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"},
- {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
- OPT_PROV_OPTIONS,
- {NULL}
- };
- int ec_main(int argc, char **argv)
- {
- OSSL_ENCODER_CTX *ectx = NULL;
- OSSL_DECODER_CTX *dctx = NULL;
- EVP_PKEY_CTX *pctx = NULL;
- EVP_PKEY *eckey = NULL;
- BIO *out = NULL;
- ENGINE *e = NULL;
- EVP_CIPHER *enc = NULL;
- char *infile = NULL, *outfile = NULL, *ciphername = NULL, *prog;
- char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
- OPTION_CHOICE o;
- int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, text = 0, noout = 0;
- int pubin = 0, pubout = 0, param_out = 0, ret = 1, private = 0;
- int check = 0;
- char *asn1_encoding = NULL;
- char *point_format = NULL;
- int no_public = 0;
- opt_set_unknown_name("cipher");
- prog = opt_init(argc, argv, ec_options);
- while ((o = opt_next()) != OPT_EOF) {
- switch (o) {
- case OPT_EOF:
- case OPT_ERR:
- opthelp:
- BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
- goto end;
- case OPT_HELP:
- opt_help(ec_options);
- ret = 0;
- goto end;
- case OPT_INFORM:
- if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
- goto opthelp;
- break;
- case OPT_IN:
- infile = opt_arg();
- break;
- case OPT_OUTFORM:
- if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
- goto opthelp;
- break;
- case OPT_OUT:
- outfile = opt_arg();
- break;
- case OPT_NOOUT:
- noout = 1;
- break;
- case OPT_TEXT:
- text = 1;
- break;
- case OPT_PARAM_OUT:
- param_out = 1;
- break;
- case OPT_PUBIN:
- pubin = 1;
- break;
- case OPT_PUBOUT:
- pubout = 1;
- break;
- case OPT_PASSIN:
- passinarg = opt_arg();
- break;
- case OPT_PASSOUT:
- passoutarg = opt_arg();
- break;
- case OPT_ENGINE:
- e = setup_engine(opt_arg(), 0);
- break;
- case OPT_CIPHER:
- ciphername = opt_unknown();
- break;
- case OPT_CONV_FORM:
- point_format = opt_arg();
- if (!opt_string(point_format, point_format_options))
- goto opthelp;
- break;
- case OPT_PARAM_ENC:
- asn1_encoding = opt_arg();
- if (!opt_string(asn1_encoding, asn1_encoding_options))
- goto opthelp;
- break;
- case OPT_NO_PUBLIC:
- no_public = 1;
- break;
- case OPT_CHECK:
- check = 1;
- break;
- case OPT_PROV_CASES:
- if (!opt_provider(o))
- goto end;
- break;
- }
- }
-
- if (!opt_check_rest_arg(NULL))
- goto opthelp;
- if (!opt_cipher(ciphername, &enc))
- goto opthelp;
- private = !pubin && (text || (!param_out && !pubout));
- if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
- BIO_printf(bio_err, "Error getting passwords\n");
- goto end;
- }
- BIO_printf(bio_err, "read EC key\n");
- if (pubin)
- eckey = load_pubkey(infile, informat, 1, passin, e, "public key");
- else
- eckey = load_key(infile, informat, 1, passin, e, "private key");
- if (eckey == NULL) {
- BIO_printf(bio_err, "unable to load Key\n");
- goto end;
- }
- out = bio_open_owner(outfile, outformat, private);
- if (out == NULL)
- goto end;
- if (point_format
- && !EVP_PKEY_set_utf8_string_param(
- eckey, OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT,
- point_format)) {
- BIO_printf(bio_err, "unable to set point conversion format\n");
- goto end;
- }
- if (asn1_encoding != NULL
- && !EVP_PKEY_set_utf8_string_param(
- eckey, OSSL_PKEY_PARAM_EC_ENCODING, asn1_encoding)) {
- BIO_printf(bio_err, "unable to set asn1 encoding format\n");
- goto end;
- }
- if (no_public) {
- if (!EVP_PKEY_set_int_param(eckey, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC, 0)) {
- BIO_printf(bio_err, "unable to disable public key encoding\n");
- goto end;
- }
- } else {
- if (!EVP_PKEY_set_int_param(eckey, OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC, 1)) {
- BIO_printf(bio_err, "unable to enable public key encoding\n");
- goto end;
- }
- }
- if (text) {
- assert(pubin || private);
- if ((pubin && EVP_PKEY_print_public(out, eckey, 0, NULL) <= 0)
- || (!pubin && EVP_PKEY_print_private(out, eckey, 0, NULL) <= 0)) {
- BIO_printf(bio_err, "unable to print EC key\n");
- goto end;
- }
- }
- if (check) {
- pctx = EVP_PKEY_CTX_new_from_pkey(NULL, eckey, NULL);
- if (pctx == NULL) {
- BIO_printf(bio_err, "unable to check EC key\n");
- goto end;
- }
- if (EVP_PKEY_check(pctx) <= 0)
- BIO_printf(bio_err, "EC Key Invalid!\n");
- else
- BIO_printf(bio_err, "EC Key valid.\n");
- ERR_print_errors(bio_err);
- }
- if (!noout) {
- int selection;
- const char *output_type = outformat == FORMAT_ASN1 ? "DER" : "PEM";
- const char *output_structure = "type-specific";
- BIO_printf(bio_err, "writing EC key\n");
- if (param_out) {
- selection = OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS;
- } else if (pubin || pubout) {
- selection = OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS
- | OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
- output_structure = "SubjectPublicKeyInfo";
- } else {
- selection = OSSL_KEYMGMT_SELECT_ALL;
- assert(private);
- }
- ectx = OSSL_ENCODER_CTX_new_for_pkey(eckey, selection,
- output_type, output_structure,
- NULL);
- if (enc != NULL) {
- OSSL_ENCODER_CTX_set_cipher(ectx, EVP_CIPHER_get0_name(enc), NULL);
-
- OSSL_ENCODER_CTX_set_passphrase_ui(ectx, get_ui_method(), NULL);
- if (passout != NULL)
-
- OSSL_ENCODER_CTX_set_passphrase(ectx,
- (const unsigned char *)passout,
- strlen(passout));
- }
- if (!OSSL_ENCODER_to_bio(ectx, out)) {
- BIO_printf(bio_err, "unable to write EC key\n");
- goto end;
- }
- }
- ret = 0;
- end:
- if (ret != 0)
- ERR_print_errors(bio_err);
- BIO_free_all(out);
- EVP_PKEY_free(eckey);
- EVP_CIPHER_free(enc);
- OSSL_ENCODER_CTX_free(ectx);
- OSSL_DECODER_CTX_free(dctx);
- EVP_PKEY_CTX_free(pctx);
- release_engine(e);
- if (passin != NULL)
- OPENSSL_clear_free(passin, strlen(passin));
- if (passout != NULL)
- OPENSSL_clear_free(passout, strlen(passout));
- return ret;
- }
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