/* * Copyright 2006-2021 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 #include #include "apps.h" #include "progs.h" #include #include #include static int quiet; static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e, OSSL_LIB_CTX *libctx, const char *propq); static int genpkey_cb(EVP_PKEY_CTX *ctx); 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_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"}, {"quiet", OPT_QUIET, 's', "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, m; OSSL_LIB_CTX *libctx = app_get0_libctx(); STACK_OF(OPENSSL_STRING) *keyopt = NULL; 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: quiet = 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. */ argc = opt_num_rest(); if (argc != 0) 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 (ciphername != NULL) { if (!opt_cipher(ciphername, &cipher) || do_param == 1) goto opthelp; m = EVP_CIPHER_mode(cipher); if (m == EVP_CIPH_GCM_MODE || m == EVP_CIPH_CCM_MODE || m == EVP_CIPH_XTS_MODE || m == EVP_CIPH_OCB_MODE) { BIO_printf(bio_err, "%s: cipher mode not supported\n", prog); goto end; } } 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; EVP_PKEY_CTX_set_cb(ctx, genpkey_cb); EVP_PKEY_CTX_set_app_data(ctx, bio_err); if (do_param) { if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) { BIO_puts(bio_err, "Error generating parameters\n"); ERR_print_errors(bio_err); goto end; } } else { if (EVP_PKEY_keygen(ctx, &pkey) <= 0) { BIO_puts(bio_err, "Error generating key\n"); ERR_print_errors(bio_err); goto end; } } 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"); ERR_print_errors(bio_err); 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"); ERR_print_errors(bio_err); ret = 1; } } end: sk_OPENSSL_STRING_free(keyopt); 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; } static int genpkey_cb(EVP_PKEY_CTX *ctx) { char c = '*'; BIO *b = EVP_PKEY_CTX_get_app_data(ctx); if (quiet) return 1; switch (EVP_PKEY_CTX_get_keygen_info(ctx, 0)) { case 0: c = '.'; break; case 1: c = '+'; break; case 3: c = '\n'; break; } BIO_write(b, &c, 1); (void)BIO_flush(b); return 1; }