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- #include <openssl/opensslconf.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <time.h>
- #include "apps.h"
- #include "progs.h"
- #include <openssl/bio.h>
- #include <openssl/err.h>
- #include <openssl/dsa.h>
- #include <openssl/evp.h>
- #include <openssl/x509.h>
- #include <openssl/pem.h>
- #include <openssl/bn.h>
- #include <openssl/encoder.h>
- #include <openssl/core_names.h>
- #include <openssl/core_dispatch.h>
- #ifndef OPENSSL_NO_RC4
- # define DEFAULT_PVK_ENCR_STRENGTH 2
- #else
- # define DEFAULT_PVK_ENCR_STRENGTH 0
- #endif
- typedef enum OPTION_choice {
- OPT_COMMON,
- OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_ENGINE,
-
- OPT_PVK_NONE, OPT_PVK_WEAK, OPT_PVK_STRONG,
- OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_PUBIN,
- OPT_PUBOUT, OPT_CIPHER, OPT_PASSIN, OPT_PASSOUT,
- OPT_PROV_ENUM
- } OPTION_CHOICE;
- const OPTIONS dsa_options[] = {
- OPT_SECTION("General"),
- {"help", OPT_HELP, '-', "Display this summary"},
- {"", OPT_CIPHER, '-', "Any supported cipher"},
- #ifndef OPENSSL_NO_RC4
- {"pvk-strong", OPT_PVK_STRONG, '-', "Enable 'Strong' PVK encoding level (default)"},
- {"pvk-weak", OPT_PVK_WEAK, '-', "Enable 'Weak' PVK encoding level"},
- {"pvk-none", OPT_PVK_NONE, '-', "Don't enforce PVK encoding"},
- #endif
- #ifndef OPENSSL_NO_ENGINE
- {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
- #endif
- OPT_SECTION("Input"),
- {"in", OPT_IN, 's', "Input key"},
- {"inform", OPT_INFORM, 'f', "Input format (DER/PEM/PVK); has no effect"},
- {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
- {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
- OPT_SECTION("Output"),
- {"out", OPT_OUT, '>', "Output file"},
- {"outform", OPT_OUTFORM, 'f', "Output format, DER PEM PVK"},
- {"noout", OPT_NOOUT, '-', "Don't print key out"},
- {"text", OPT_TEXT, '-', "Print the key in text"},
- {"modulus", OPT_MODULUS, '-', "Print the DSA public value"},
- {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
- {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
- OPT_PROV_OPTIONS,
- {NULL}
- };
- int dsa_main(int argc, char **argv)
- {
- BIO *out = NULL;
- ENGINE *e = NULL;
- EVP_PKEY *pkey = NULL;
- EVP_CIPHER *enc = NULL;
- char *infile = NULL, *outfile = 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 modulus = 0, pubin = 0, pubout = 0, ret = 1;
- int pvk_encr = DEFAULT_PVK_ENCR_STRENGTH;
- int private = 0;
- const char *output_type = NULL, *ciphername = NULL;
- const char *output_structure = NULL;
- int selection = 0;
- OSSL_ENCODER_CTX *ectx = NULL;
- opt_set_unknown_name("cipher");
- prog = opt_init(argc, argv, dsa_options);
- while ((o = opt_next()) != OPT_EOF) {
- switch (o) {
- case OPT_EOF:
- case OPT_ERR:
- opthelp:
- ret = 0;
- BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
- goto end;
- case OPT_HELP:
- opt_help(dsa_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_ANY, &outformat))
- goto opthelp;
- break;
- case OPT_OUT:
- outfile = opt_arg();
- break;
- case OPT_ENGINE:
- e = setup_engine(opt_arg(), 0);
- break;
- case OPT_PASSIN:
- passinarg = opt_arg();
- break;
- case OPT_PASSOUT:
- passoutarg = opt_arg();
- break;
- case OPT_PVK_STRONG:
- case OPT_PVK_WEAK:
- case OPT_PVK_NONE:
- #ifndef OPENSSL_NO_RC4
- pvk_encr = (o - OPT_PVK_NONE);
- #endif
- break;
- case OPT_NOOUT:
- noout = 1;
- break;
- case OPT_TEXT:
- text = 1;
- break;
- case OPT_MODULUS:
- modulus = 1;
- break;
- case OPT_PUBIN:
- pubin = 1;
- break;
- case OPT_PUBOUT:
- pubout = 1;
- break;
- case OPT_CIPHER:
- ciphername = opt_unknown();
- 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 end;
- private = !pubin && (!pubout || text);
- if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
- BIO_printf(bio_err, "Error getting passwords\n");
- goto end;
- }
- BIO_printf(bio_err, "read DSA key\n");
- if (pubin)
- pkey = load_pubkey(infile, informat, 1, passin, e, "public key");
- else
- pkey = load_key(infile, informat, 1, passin, e, "private key");
- if (pkey == NULL) {
- BIO_printf(bio_err, "unable to load Key\n");
- ERR_print_errors(bio_err);
- goto end;
- }
- if (!EVP_PKEY_is_a(pkey, "DSA")) {
- BIO_printf(bio_err, "Not a DSA key\n");
- goto end;
- }
- out = bio_open_owner(outfile, outformat, private);
- if (out == NULL)
- goto end;
- if (text) {
- assert(pubin || private);
- if ((pubin && EVP_PKEY_print_public(out, pkey, 0, NULL) <= 0)
- || (!pubin && EVP_PKEY_print_private(out, pkey, 0, NULL) <= 0)) {
- perror(outfile);
- ERR_print_errors(bio_err);
- goto end;
- }
- }
- if (modulus) {
- BIGNUM *pub_key = NULL;
- if (!EVP_PKEY_get_bn_param(pkey, "pub", &pub_key)) {
- ERR_print_errors(bio_err);
- goto end;
- }
- BIO_printf(out, "Public Key=");
- BN_print(out, pub_key);
- BIO_printf(out, "\n");
- BN_free(pub_key);
- }
- if (noout) {
- ret = 0;
- goto end;
- }
- BIO_printf(bio_err, "writing DSA key\n");
- if (outformat == FORMAT_ASN1) {
- output_type = "DER";
- } else if (outformat == FORMAT_PEM) {
- output_type = "PEM";
- } else if (outformat == FORMAT_MSBLOB) {
- output_type = "MSBLOB";
- } else if (outformat == FORMAT_PVK) {
- if (pubin) {
- BIO_printf(bio_err, "PVK form impossible with public key input\n");
- goto end;
- }
- output_type = "PVK";
- } else {
- BIO_printf(bio_err, "bad output format specified for outfile\n");
- goto end;
- }
- if (outformat == FORMAT_ASN1 || outformat == FORMAT_PEM) {
- if (pubout || pubin)
- output_structure = "SubjectPublicKeyInfo";
- else
- output_structure = "type-specific";
- }
-
- if (pubout || pubin) {
- selection = OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
- } else {
- assert(private);
- selection = (OSSL_KEYMGMT_SELECT_KEYPAIR
- | OSSL_KEYMGMT_SELECT_ALL_PARAMETERS);
- }
-
- ectx = OSSL_ENCODER_CTX_new_for_pkey(pkey, selection, output_type,
- output_structure, NULL);
- if (OSSL_ENCODER_CTX_get_num_encoders(ectx) == 0) {
- BIO_printf(bio_err, "%s format not supported\n", output_type);
- goto end;
- }
-
- if (enc != NULL)
- OSSL_ENCODER_CTX_set_cipher(ectx, EVP_CIPHER_get0_name(enc), NULL);
-
- if (enc != NULL || outformat == FORMAT_PVK) {
- 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 (outformat == FORMAT_PVK) {
- OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
- params[0] = OSSL_PARAM_construct_int("encrypt-level", &pvk_encr);
- if (!OSSL_ENCODER_CTX_set_params(ectx, params)) {
- BIO_printf(bio_err, "invalid PVK encryption level\n");
- goto end;
- }
- }
- if (!OSSL_ENCODER_to_bio(ectx, out)) {
- BIO_printf(bio_err, "unable to write key\n");
- goto end;
- }
- ret = 0;
- end:
- if (ret != 0)
- ERR_print_errors(bio_err);
- OSSL_ENCODER_CTX_free(ectx);
- BIO_free_all(out);
- EVP_PKEY_free(pkey);
- EVP_CIPHER_free(enc);
- release_engine(e);
- OPENSSL_free(passin);
- OPENSSL_free(passout);
- return ret;
- }
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