| /* |
| * Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include "apps.h" |
| #include "progs.h" |
| #include <openssl/pem.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| |
| static int verbose = 1; |
| |
| static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e, |
| OSSL_LIB_CTX *libctx, const char *propq); |
| typedef enum OPTION_choice { |
| OPT_COMMON, |
| OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE, |
| OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER, |
| OPT_VERBOSE, OPT_QUIET, OPT_CONFIG, |
| OPT_PROV_ENUM |
| } OPTION_CHOICE; |
| |
| const OPTIONS genpkey_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 |
| {"paramfile", OPT_PARAMFILE, '<', "Parameters file"}, |
| {"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"}, |
| {"verbose", OPT_VERBOSE, '-', "Output status while generating keys"}, |
| {"quiet", OPT_QUIET, '-', "Do not output status while generating keys"}, |
| {"pkeyopt", OPT_PKEYOPT, 's', |
| "Set the public key algorithm option as opt:value"}, |
| OPT_CONFIG_OPTION, |
| |
| OPT_SECTION("Output"), |
| {"out", OPT_OUT, '>', "Output file"}, |
| {"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"}, |
| {"pass", OPT_PASS, 's', "Output file pass phrase source"}, |
| {"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"}, |
| {"text", OPT_TEXT, '-', "Print the in text"}, |
| {"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"}, |
| |
| OPT_PROV_OPTIONS, |
| |
| /* This is deliberately last. */ |
| {OPT_HELP_STR, 1, 1, |
| "Order of options may be important! See the documentation.\n"}, |
| {NULL} |
| }; |
| |
| int genpkey_main(int argc, char **argv) |
| { |
| CONF *conf = NULL; |
| BIO *in = NULL, *out = NULL; |
| ENGINE *e = NULL; |
| EVP_PKEY *pkey = NULL; |
| EVP_PKEY_CTX *ctx = NULL; |
| char *outfile = NULL, *passarg = NULL, *pass = NULL, *prog, *p; |
| const char *ciphername = NULL, *paramfile = NULL, *algname = NULL; |
| EVP_CIPHER *cipher = NULL; |
| OPTION_CHOICE o; |
| int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0; |
| int private = 0, i; |
| OSSL_LIB_CTX *libctx = app_get0_libctx(); |
| STACK_OF(OPENSSL_STRING) *keyopt = NULL; |
| |
| opt_set_unknown_name("cipher"); |
| prog = opt_init(argc, argv, genpkey_options); |
| keyopt = sk_OPENSSL_STRING_new_null(); |
| if (keyopt == NULL) |
| goto end; |
| 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: |
| ret = 0; |
| opt_help(genpkey_options); |
| goto end; |
| case OPT_OUTFORM: |
| if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) |
| goto opthelp; |
| break; |
| case OPT_OUT: |
| outfile = opt_arg(); |
| break; |
| case OPT_PASS: |
| passarg = opt_arg(); |
| break; |
| case OPT_ENGINE: |
| e = setup_engine(opt_arg(), 0); |
| break; |
| case OPT_PARAMFILE: |
| if (do_param == 1) |
| goto opthelp; |
| paramfile = opt_arg(); |
| break; |
| case OPT_ALGORITHM: |
| algname = opt_arg(); |
| break; |
| case OPT_PKEYOPT: |
| if (!sk_OPENSSL_STRING_push(keyopt, opt_arg())) |
| goto end; |
| break; |
| case OPT_QUIET: |
| verbose = 0; |
| break; |
| case OPT_VERBOSE: |
| verbose = 1; |
| break; |
| case OPT_GENPARAM: |
| do_param = 1; |
| break; |
| case OPT_TEXT: |
| text = 1; |
| break; |
| case OPT_CIPHER: |
| ciphername = opt_unknown(); |
| break; |
| case OPT_CONFIG: |
| conf = app_load_config_modules(opt_arg()); |
| if (conf == NULL) |
| goto end; |
| break; |
| case OPT_PROV_CASES: |
| if (!opt_provider(o)) |
| goto end; |
| break; |
| } |
| } |
| |
| /* No extra arguments. */ |
| if (!opt_check_rest_arg(NULL)) |
| goto opthelp; |
| |
| /* Fetch cipher, etc. */ |
| if (paramfile != NULL) { |
| if (!init_keygen_file(&ctx, paramfile, e, libctx, app_get0_propq())) |
| goto end; |
| } |
| if (algname != NULL) { |
| if (!init_gen_str(&ctx, algname, e, do_param, libctx, app_get0_propq())) |
| goto end; |
| } |
| if (ctx == NULL) |
| goto opthelp; |
| |
| for (i = 0; i < sk_OPENSSL_STRING_num(keyopt); i++) { |
| p = sk_OPENSSL_STRING_value(keyopt, i); |
| if (pkey_ctrl_string(ctx, p) <= 0) { |
| BIO_printf(bio_err, "%s: Error setting %s parameter:\n", prog, p); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } |
| if (!opt_cipher(ciphername, &cipher)) |
| goto opthelp; |
| if (ciphername != NULL && do_param == 1) { |
| BIO_printf(bio_err, "Cannot use cipher with -genparam option\n"); |
| goto opthelp; |
| } |
| |
| private = do_param ? 0 : 1; |
| |
| if (!app_passwd(passarg, NULL, &pass, NULL)) { |
| BIO_puts(bio_err, "Error getting password\n"); |
| goto end; |
| } |
| |
| out = bio_open_owner(outfile, outformat, private); |
| if (out == NULL) |
| goto end; |
| |
| if (verbose) |
| EVP_PKEY_CTX_set_cb(ctx, progress_cb); |
| EVP_PKEY_CTX_set_app_data(ctx, bio_err); |
| |
| pkey = do_param ? app_paramgen(ctx, algname) |
| : app_keygen(ctx, algname, 0, 0 /* not verbose */); |
| |
| if (do_param) { |
| rv = PEM_write_bio_Parameters(out, pkey); |
| } else if (outformat == FORMAT_PEM) { |
| assert(private); |
| rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass); |
| } else if (outformat == FORMAT_ASN1) { |
| assert(private); |
| rv = i2d_PrivateKey_bio(out, pkey); |
| } else { |
| BIO_printf(bio_err, "Bad format specified for key\n"); |
| goto end; |
| } |
| |
| ret = 0; |
| |
| if (rv <= 0) { |
| BIO_puts(bio_err, "Error writing key\n"); |
| ret = 1; |
| } |
| |
| if (text) { |
| if (do_param) |
| rv = EVP_PKEY_print_params(out, pkey, 0, NULL); |
| else |
| rv = EVP_PKEY_print_private(out, pkey, 0, NULL); |
| |
| if (rv <= 0) { |
| BIO_puts(bio_err, "Error printing key\n"); |
| ret = 1; |
| } |
| } |
| |
| end: |
| sk_OPENSSL_STRING_free(keyopt); |
| if (ret != 0) |
| ERR_print_errors(bio_err); |
| EVP_PKEY_free(pkey); |
| EVP_PKEY_CTX_free(ctx); |
| EVP_CIPHER_free(cipher); |
| BIO_free_all(out); |
| BIO_free(in); |
| release_engine(e); |
| OPENSSL_free(pass); |
| NCONF_free(conf); |
| return ret; |
| } |
| |
| static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e, |
| OSSL_LIB_CTX *libctx, const char *propq) |
| { |
| BIO *pbio; |
| EVP_PKEY *pkey = NULL; |
| EVP_PKEY_CTX *ctx = NULL; |
| if (*pctx) { |
| BIO_puts(bio_err, "Parameters already set!\n"); |
| return 0; |
| } |
| |
| pbio = BIO_new_file(file, "r"); |
| if (pbio == NULL) { |
| BIO_printf(bio_err, "Can't open parameter file %s\n", file); |
| return 0; |
| } |
| |
| pkey = PEM_read_bio_Parameters_ex(pbio, NULL, libctx, propq); |
| BIO_free(pbio); |
| |
| if (pkey == NULL) { |
| BIO_printf(bio_err, "Error reading parameter file %s\n", file); |
| return 0; |
| } |
| |
| if (e != NULL) |
| ctx = EVP_PKEY_CTX_new(pkey, e); |
| else |
| ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq); |
| if (ctx == NULL) |
| goto err; |
| if (EVP_PKEY_keygen_init(ctx) <= 0) |
| goto err; |
| EVP_PKEY_free(pkey); |
| *pctx = ctx; |
| return 1; |
| |
| err: |
| BIO_puts(bio_err, "Error initializing context\n"); |
| ERR_print_errors(bio_err); |
| EVP_PKEY_CTX_free(ctx); |
| EVP_PKEY_free(pkey); |
| return 0; |
| |
| } |
| |
| int init_gen_str(EVP_PKEY_CTX **pctx, |
| const char *algname, ENGINE *e, int do_param, |
| OSSL_LIB_CTX *libctx, const char *propq) |
| { |
| EVP_PKEY_CTX *ctx = NULL; |
| int pkey_id; |
| |
| if (*pctx) { |
| BIO_puts(bio_err, "Algorithm already set!\n"); |
| return 0; |
| } |
| |
| pkey_id = get_legacy_pkey_id(libctx, algname, e); |
| if (pkey_id != NID_undef) |
| ctx = EVP_PKEY_CTX_new_id(pkey_id, e); |
| else |
| ctx = EVP_PKEY_CTX_new_from_name(libctx, algname, propq); |
| |
| if (ctx == NULL) |
| goto err; |
| if (do_param) { |
| if (EVP_PKEY_paramgen_init(ctx) <= 0) |
| goto err; |
| } else { |
| if (EVP_PKEY_keygen_init(ctx) <= 0) |
| goto err; |
| } |
| |
| *pctx = ctx; |
| return 1; |
| |
| err: |
| BIO_printf(bio_err, "Error initializing %s context\n", algname); |
| ERR_print_errors(bio_err); |
| EVP_PKEY_CTX_free(ctx); |
| return 0; |
| |
| } |
| |
