/* * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (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 #include #include "apps.h" #include #include #include #include #include #include #include #include #include #include #ifndef OPENSSL_NO_RSA # include #endif #ifndef OPENSSL_NO_DSA # include #endif #define SECTION "req" #define BITS "default_bits" #define KEYFILE "default_keyfile" #define PROMPT "prompt" #define DISTINGUISHED_NAME "distinguished_name" #define ATTRIBUTES "attributes" #define V3_EXTENSIONS "x509_extensions" #define REQ_EXTENSIONS "req_extensions" #define STRING_MASK "string_mask" #define UTF8_IN "utf8" #define DEFAULT_KEY_LENGTH 2048 #define MIN_KEY_LENGTH 512 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *dn, int mutlirdn, int attribs, unsigned long chtype); static int build_subject(X509_REQ *req, const char *subj, unsigned long chtype, int multirdn); static int prompt_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect, STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect, int attribs, unsigned long chtype); static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk, STACK_OF(CONF_VALUE) *attr, int attribs, unsigned long chtype); static int add_attribute_object(X509_REQ *req, char *text, const char *def, char *value, int nid, int n_min, int n_max, unsigned long chtype); static int add_DN_object(X509_NAME *n, char *text, const char *def, char *value, int nid, int n_min, int n_max, unsigned long chtype, int mval); static int genpkey_cb(EVP_PKEY_CTX *ctx); static int req_check_len(int len, int n_min, int n_max); static int check_end(const char *str, const char *end); static int join(char buf[], size_t buf_size, const char *name, const char *tail, const char *desc); static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr, int *pkey_type, long *pkeylen, char **palgnam, ENGINE *keygen_engine); static CONF *req_conf = NULL; static int batch = 0; typedef enum OPTION_choice { OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_KEYGEN_ENGINE, OPT_KEY, OPT_PUBKEY, OPT_NEW, OPT_CONFIG, OPT_KEYFORM, OPT_IN, OPT_OUT, OPT_KEYOUT, OPT_PASSIN, OPT_PASSOUT, OPT_NEWKEY, OPT_PKEYOPT, OPT_SIGOPT, OPT_BATCH, OPT_NEWHDR, OPT_MODULUS, OPT_VERIFY, OPT_NODES, OPT_NOOUT, OPT_VERBOSE, OPT_UTF8, OPT_NAMEOPT, OPT_REQOPT, OPT_SUBJ, OPT_SUBJECT, OPT_TEXT, OPT_X509, OPT_MULTIVALUE_RDN, OPT_DAYS, OPT_SET_SERIAL, OPT_EXTENSIONS, OPT_REQEXTS, OPT_PRECERT, OPT_MD, OPT_R_ENUM } OPTION_CHOICE; const OPTIONS req_options[] = { {"help", OPT_HELP, '-', "Display this summary"}, {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"}, {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"}, {"in", OPT_IN, '<', "Input file"}, {"out", OPT_OUT, '>', "Output file"}, {"key", OPT_KEY, 's', "Private key to use"}, {"keyform", OPT_KEYFORM, 'f', "Key file format"}, {"pubkey", OPT_PUBKEY, '-', "Output public key"}, {"new", OPT_NEW, '-', "New request"}, {"config", OPT_CONFIG, '<', "Request template file"}, {"keyout", OPT_KEYOUT, '>', "File to send the key to"}, {"passin", OPT_PASSIN, 's', "Private key password source"}, {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, OPT_R_OPTIONS, {"newkey", OPT_NEWKEY, 's', "Specify as type:bits"}, {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"}, {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"}, {"batch", OPT_BATCH, '-', "Do not ask anything during request generation"}, {"newhdr", OPT_NEWHDR, '-', "Output \"NEW\" in the header lines"}, {"modulus", OPT_MODULUS, '-', "RSA modulus"}, {"verify", OPT_VERIFY, '-', "Verify signature on REQ"}, {"nodes", OPT_NODES, '-', "Don't encrypt the output key"}, {"noout", OPT_NOOUT, '-', "Do not output REQ"}, {"verbose", OPT_VERBOSE, '-', "Verbose output"}, {"utf8", OPT_UTF8, '-', "Input characters are UTF8 (default ASCII)"}, {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"}, {"reqopt", OPT_REQOPT, 's', "Various request text options"}, {"text", OPT_TEXT, '-', "Text form of request"}, {"x509", OPT_X509, '-', "Output a x509 structure instead of a cert request"}, {OPT_MORE_STR, 1, 1, "(Required by some CA's)"}, {"subj", OPT_SUBJ, 's', "Set or modify request subject"}, {"subject", OPT_SUBJECT, '-', "Output the request's subject"}, {"multivalue-rdn", OPT_MULTIVALUE_RDN, '-', "Enable support for multivalued RDNs"}, {"days", OPT_DAYS, 'p', "Number of days cert is valid for"}, {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"}, {"extensions", OPT_EXTENSIONS, 's', "Cert extension section (override value in config file)"}, {"reqexts", OPT_REQEXTS, 's', "Request extension section (override value in config file)"}, {"precert", OPT_PRECERT, '-', "Add a poison extension (implies -new)"}, {"", OPT_MD, '-', "Any supported digest"}, #ifndef OPENSSL_NO_ENGINE {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, {"keygen_engine", OPT_KEYGEN_ENGINE, 's', "Specify engine to be used for key generation operations"}, #endif {NULL} }; int req_main(int argc, char **argv) { ASN1_INTEGER *serial = NULL; BIO *in = NULL, *out = NULL; ENGINE *e = NULL, *gen_eng = NULL; EVP_PKEY *pkey = NULL; EVP_PKEY_CTX *genctx = NULL; STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL; X509 *x509ss = NULL; X509_REQ *req = NULL; const EVP_CIPHER *cipher = NULL; const EVP_MD *md_alg = NULL, *digest = NULL; char *extensions = NULL, *infile = NULL; char *outfile = NULL, *keyfile = NULL; char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL; char *passin = NULL, *passout = NULL; char *nofree_passin = NULL, *nofree_passout = NULL; char *req_exts = NULL, *subj = NULL; char *template = default_config_file, *keyout = NULL; const char *keyalg = NULL; OPTION_CHOICE o; int ret = 1, x509 = 0, days = 30, i = 0, newreq = 0, verbose = 0; int pkey_type = -1, private = 0; int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyform = FORMAT_PEM; int modulus = 0, multirdn = 0, verify = 0, noout = 0, text = 0; int nodes = 0, newhdr = 0, subject = 0, pubkey = 0, precert = 0; long newkey = -1; unsigned long chtype = MBSTRING_ASC, reqflag = 0; #ifndef OPENSSL_NO_DES cipher = EVP_des_ede3_cbc(); #endif prog = opt_init(argc, argv, req_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(req_options); ret = 0; goto end; case OPT_INFORM: if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat)) goto opthelp; break; case OPT_OUTFORM: if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) goto opthelp; break; case OPT_ENGINE: e = setup_engine(opt_arg(), 0); break; case OPT_KEYGEN_ENGINE: #ifndef OPENSSL_NO_ENGINE gen_eng = ENGINE_by_id(opt_arg()); if (gen_eng == NULL) { BIO_printf(bio_err, "Can't find keygen engine %s\n", *argv); goto opthelp; } #endif break; case OPT_KEY: keyfile = opt_arg(); break; case OPT_PUBKEY: pubkey = 1; break; case OPT_NEW: newreq = 1; break; case OPT_CONFIG: template = opt_arg(); break; case OPT_KEYFORM: if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform)) goto opthelp; break; case OPT_IN: infile = opt_arg(); break; case OPT_OUT: outfile = opt_arg(); break; case OPT_KEYOUT: keyout = opt_arg(); break; case OPT_PASSIN: passargin = opt_arg(); break; case OPT_PASSOUT: passargout = opt_arg(); break; case OPT_R_CASES: if (!opt_rand(o)) goto end; break; case OPT_NEWKEY: keyalg = opt_arg(); newreq = 1; break; case OPT_PKEYOPT: if (!pkeyopts) pkeyopts = sk_OPENSSL_STRING_new_null(); if (!pkeyopts || !sk_OPENSSL_STRING_push(pkeyopts, opt_arg())) goto opthelp; break; case OPT_SIGOPT: if (!sigopts) sigopts = sk_OPENSSL_STRING_new_null(); if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg())) goto opthelp; break; case OPT_BATCH: batch = 1; break; case OPT_NEWHDR: newhdr = 1; break; case OPT_MODULUS: modulus = 1; break; case OPT_VERIFY: verify = 1; break; case OPT_NODES: nodes = 1; break; case OPT_NOOUT: noout = 1; break; case OPT_VERBOSE: verbose = 1; break; case OPT_UTF8: chtype = MBSTRING_UTF8; break; case OPT_NAMEOPT: if (!set_nameopt(opt_arg())) goto opthelp; break; case OPT_REQOPT: if (!set_cert_ex(&reqflag, opt_arg())) goto opthelp; break; case OPT_TEXT: text = 1; break; case OPT_X509: x509 = 1; break; case OPT_DAYS: days = atoi(opt_arg()); break; case OPT_SET_SERIAL: if (serial != NULL) { BIO_printf(bio_err, "Serial number supplied twice\n"); goto opthelp; } serial = s2i_ASN1_INTEGER(NULL, opt_arg()); if (serial == NULL) goto opthelp; break; case OPT_SUBJECT: subject = 1; break; case OPT_SUBJ: subj = opt_arg(); break; case OPT_MULTIVALUE_RDN: multirdn = 1; break; case OPT_EXTENSIONS: extensions = opt_arg(); break; case OPT_REQEXTS: req_exts = opt_arg(); break; case OPT_PRECERT: newreq = precert = 1; break; case OPT_MD: if (!opt_md(opt_unknown(), &md_alg)) goto opthelp; digest = md_alg; break; } } argc = opt_num_rest(); if (argc != 0) goto opthelp; if (days && !x509) BIO_printf(bio_err, "Ignoring -days; not generating a certificate"); if (x509 && infile == NULL) newreq = 1; /* TODO: simplify this as pkey is still always NULL here */ private = newreq && (pkey == NULL) ? 1 : 0; if (!app_passwd(passargin, passargout, &passin, &passout)) { BIO_printf(bio_err, "Error getting passwords\n"); goto end; } if (verbose) BIO_printf(bio_err, "Using configuration from %s\n", template); req_conf = app_load_config(template); if (template != default_config_file && !app_load_modules(req_conf)) goto end; if (req_conf != NULL) { p = NCONF_get_string(req_conf, NULL, "oid_file"); if (p == NULL) ERR_clear_error(); if (p != NULL) { BIO *oid_bio; oid_bio = BIO_new_file(p, "r"); if (oid_bio == NULL) { /*- BIO_printf(bio_err,"problems opening %s for extra oid's\n",p); ERR_print_errors(bio_err); */ } else { OBJ_create_objects(oid_bio); BIO_free(oid_bio); } } } if (!add_oid_section(req_conf)) goto end; if (md_alg == NULL) { p = NCONF_get_string(req_conf, SECTION, "default_md"); if (p == NULL) { ERR_clear_error(); } else { if (!opt_md(p, &md_alg)) goto opthelp; digest = md_alg; } } if (extensions == NULL) { extensions = NCONF_get_string(req_conf, SECTION, V3_EXTENSIONS); if (extensions == NULL) ERR_clear_error(); } if (extensions != NULL) { /* Check syntax of file */ X509V3_CTX ctx; X509V3_set_ctx_test(&ctx); X509V3_set_nconf(&ctx, req_conf); if (!X509V3_EXT_add_nconf(req_conf, &ctx, extensions, NULL)) { BIO_printf(bio_err, "Error Loading extension section %s\n", extensions); goto end; } } if (passin == NULL) { passin = nofree_passin = NCONF_get_string(req_conf, SECTION, "input_password"); if (passin == NULL) ERR_clear_error(); } if (passout == NULL) { passout = nofree_passout = NCONF_get_string(req_conf, SECTION, "output_password"); if (passout == NULL) ERR_clear_error(); } p = NCONF_get_string(req_conf, SECTION, STRING_MASK); if (p == NULL) ERR_clear_error(); if (p != NULL && !ASN1_STRING_set_default_mask_asc(p)) { BIO_printf(bio_err, "Invalid global string mask setting %s\n", p); goto end; } if (chtype != MBSTRING_UTF8) { p = NCONF_get_string(req_conf, SECTION, UTF8_IN); if (p == NULL) ERR_clear_error(); else if (strcmp(p, "yes") == 0) chtype = MBSTRING_UTF8; } if (req_exts == NULL) { req_exts = NCONF_get_string(req_conf, SECTION, REQ_EXTENSIONS); if (req_exts == NULL) ERR_clear_error(); } if (req_exts != NULL) { /* Check syntax of file */ X509V3_CTX ctx; X509V3_set_ctx_test(&ctx); X509V3_set_nconf(&ctx, req_conf); if (!X509V3_EXT_add_nconf(req_conf, &ctx, req_exts, NULL)) { BIO_printf(bio_err, "Error Loading request extension section %s\n", req_exts); goto end; } } if (keyfile != NULL) { pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key"); if (pkey == NULL) { /* load_key() has already printed an appropriate message */ goto end; } else { app_RAND_load_conf(req_conf, SECTION); } } if (newreq && (pkey == NULL)) { app_RAND_load_conf(req_conf, SECTION); if (!NCONF_get_number(req_conf, SECTION, BITS, &newkey)) { newkey = DEFAULT_KEY_LENGTH; } if (keyalg != NULL) { genctx = set_keygen_ctx(keyalg, &pkey_type, &newkey, &keyalgstr, gen_eng); if (genctx == NULL) goto end; } if (newkey < MIN_KEY_LENGTH && (pkey_type == EVP_PKEY_RSA || pkey_type == EVP_PKEY_DSA)) { BIO_printf(bio_err, "private key length is too short,\n"); BIO_printf(bio_err, "it needs to be at least %d bits, not %ld\n", MIN_KEY_LENGTH, newkey); goto end; } if (genctx == NULL) { genctx = set_keygen_ctx(NULL, &pkey_type, &newkey, &keyalgstr, gen_eng); if (!genctx) goto end; } if (pkeyopts != NULL) { char *genopt; for (i = 0; i < sk_OPENSSL_STRING_num(pkeyopts); i++) { genopt = sk_OPENSSL_STRING_value(pkeyopts, i); if (pkey_ctrl_string(genctx, genopt) <= 0) { BIO_printf(bio_err, "parameter error \"%s\"\n", genopt); ERR_print_errors(bio_err); goto end; } } } if (pkey_type == EVP_PKEY_EC) { BIO_printf(bio_err, "Generating an EC private key\n"); } else { BIO_printf(bio_err, "Generating a %ld bit %s private key\n", newkey, keyalgstr); } EVP_PKEY_CTX_set_cb(genctx, genpkey_cb); EVP_PKEY_CTX_set_app_data(genctx, bio_err); if (EVP_PKEY_keygen(genctx, &pkey) <= 0) { BIO_puts(bio_err, "Error Generating Key\n"); goto end; } EVP_PKEY_CTX_free(genctx); genctx = NULL; if (keyout == NULL) { keyout = NCONF_get_string(req_conf, SECTION, KEYFILE); if (keyout == NULL) ERR_clear_error(); } if (keyout == NULL) BIO_printf(bio_err, "writing new private key to stdout\n"); else BIO_printf(bio_err, "writing new private key to '%s'\n", keyout); out = bio_open_owner(keyout, outformat, private); if (out == NULL) goto end; p = NCONF_get_string(req_conf, SECTION, "encrypt_rsa_key"); if (p == NULL) { ERR_clear_error(); p = NCONF_get_string(req_conf, SECTION, "encrypt_key"); if (p == NULL) ERR_clear_error(); } if ((p != NULL) && (strcmp(p, "no") == 0)) cipher = NULL; if (nodes) cipher = NULL; i = 0; loop: assert(private); if (!PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, passout)) { if ((ERR_GET_REASON(ERR_peek_error()) == PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3)) { ERR_clear_error(); i++; goto loop; } goto end; } BIO_free(out); out = NULL; BIO_printf(bio_err, "-----\n"); } if (!newreq) { in = bio_open_default(infile, 'r', informat); if (in == NULL) goto end; if (informat == FORMAT_ASN1) req = d2i_X509_REQ_bio(in, NULL); else req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL); if (req == NULL) { BIO_printf(bio_err, "unable to load X509 request\n"); goto end; } } if (newreq || x509) { if (pkey == NULL) { BIO_printf(bio_err, "you need to specify a private key\n"); goto end; } if (req == NULL) { req = X509_REQ_new(); if (req == NULL) { goto end; } i = make_REQ(req, pkey, subj, multirdn, !x509, chtype); subj = NULL; /* done processing '-subj' option */ if (!i) { BIO_printf(bio_err, "problems making Certificate Request\n"); goto end; } } if (x509) { EVP_PKEY *tmppkey; X509V3_CTX ext_ctx; if ((x509ss = X509_new()) == NULL) goto end; /* Set version to V3 */ if (extensions != NULL && !X509_set_version(x509ss, 2)) goto end; if (serial != NULL) { if (!X509_set_serialNumber(x509ss, serial)) goto end; } else { if (!rand_serial(NULL, X509_get_serialNumber(x509ss))) goto end; } if (!X509_set_issuer_name(x509ss, X509_REQ_get_subject_name(req))) goto end; if (!set_cert_times(x509ss, NULL, NULL, days)) goto end; if (!X509_set_subject_name (x509ss, X509_REQ_get_subject_name(req))) goto end; tmppkey = X509_REQ_get0_pubkey(req); if (!tmppkey || !X509_set_pubkey(x509ss, tmppkey)) goto end; /* Set up V3 context struct */ X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, 0); X509V3_set_nconf(&ext_ctx, req_conf); /* Add extensions */ if (extensions != NULL && !X509V3_EXT_add_nconf(req_conf, &ext_ctx, extensions, x509ss)) { BIO_printf(bio_err, "Error Loading extension section %s\n", extensions); goto end; } /* If a pre-cert was requested, we need to add a poison extension */ if (precert) { if (X509_add1_ext_i2d(x509ss, NID_ct_precert_poison, NULL, 1, 0) != 1) { BIO_printf(bio_err, "Error adding poison extension\n"); goto end; } } i = do_X509_sign(x509ss, pkey, digest, sigopts); if (!i) { ERR_print_errors(bio_err); goto end; } } else { X509V3_CTX ext_ctx; /* Set up V3 context struct */ X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0); X509V3_set_nconf(&ext_ctx, req_conf); /* Add extensions */ if (req_exts != NULL && !X509V3_EXT_REQ_add_nconf(req_conf, &ext_ctx, req_exts, req)) { BIO_printf(bio_err, "Error Loading extension section %s\n", req_exts); goto end; } i = do_X509_REQ_sign(req, pkey, digest, sigopts); if (!i) { ERR_print_errors(bio_err); goto end; } } } if (subj && x509) { BIO_printf(bio_err, "Cannot modify certificate subject\n"); goto end; } if (subj && !x509) { if (verbose) { BIO_printf(bio_err, "Modifying Request's Subject\n"); print_name(bio_err, "old subject=", X509_REQ_get_subject_name(req), get_nameopt()); } if (build_subject(req, subj, chtype, multirdn) == 0) { BIO_printf(bio_err, "ERROR: cannot modify subject\n"); ret = 1; goto end; } if (verbose) { print_name(bio_err, "new subject=", X509_REQ_get_subject_name(req), get_nameopt()); } } if (verify && !x509) { EVP_PKEY *tpubkey = pkey; if (tpubkey == NULL) { tpubkey = X509_REQ_get0_pubkey(req); if (tpubkey == NULL) goto end; } i = X509_REQ_verify(req, tpubkey); if (i < 0) { goto end; } else if (i == 0) { BIO_printf(bio_err, "verify failure\n"); ERR_print_errors(bio_err); } else { /* if (i > 0) */ BIO_printf(bio_err, "verify OK\n"); } } if (noout && !text && !modulus && !subject && !pubkey) { ret = 0; goto end; } out = bio_open_default(outfile, keyout != NULL && outfile != NULL && strcmp(keyout, outfile) == 0 ? 'a' : 'w', outformat); if (out == NULL) goto end; if (pubkey) { EVP_PKEY *tpubkey = X509_REQ_get0_pubkey(req); if (tpubkey == NULL) { BIO_printf(bio_err, "Error getting public key\n"); ERR_print_errors(bio_err); goto end; } PEM_write_bio_PUBKEY(out, tpubkey); } if (text) { if (x509) X509_print_ex(out, x509ss, get_nameopt(), reqflag); else X509_REQ_print_ex(out, req, get_nameopt(), reqflag); } if (subject) { if (x509) print_name(out, "subject=", X509_get_subject_name(x509ss), get_nameopt()); else print_name(out, "subject=", X509_REQ_get_subject_name(req), get_nameopt()); } if (modulus) { EVP_PKEY *tpubkey; if (x509) tpubkey = X509_get0_pubkey(x509ss); else tpubkey = X509_REQ_get0_pubkey(req); if (tpubkey == NULL) { fprintf(stdout, "Modulus=unavailable\n"); goto end; } fprintf(stdout, "Modulus="); #ifndef OPENSSL_NO_RSA if (EVP_PKEY_base_id(tpubkey) == EVP_PKEY_RSA) { const BIGNUM *n; RSA_get0_key(EVP_PKEY_get0_RSA(tpubkey), &n, NULL, NULL); BN_print(out, n); } else #endif fprintf(stdout, "Wrong Algorithm type"); fprintf(stdout, "\n"); } if (!noout && !x509) { if (outformat == FORMAT_ASN1) i = i2d_X509_REQ_bio(out, req); else if (newhdr) i = PEM_write_bio_X509_REQ_NEW(out, req); else i = PEM_write_bio_X509_REQ(out, req); if (!i) { BIO_printf(bio_err, "unable to write X509 request\n"); goto end; } } if (!noout && x509 && (x509ss != NULL)) { if (outformat == FORMAT_ASN1) i = i2d_X509_bio(out, x509ss); else i = PEM_write_bio_X509(out, x509ss); if (!i) { BIO_printf(bio_err, "unable to write X509 certificate\n"); goto end; } } ret = 0; end: if (ret) { ERR_print_errors(bio_err); } NCONF_free(req_conf); BIO_free(in); BIO_free_all(out); EVP_PKEY_free(pkey); EVP_PKEY_CTX_free(genctx); sk_OPENSSL_STRING_free(pkeyopts); sk_OPENSSL_STRING_free(sigopts); #ifndef OPENSSL_NO_ENGINE ENGINE_free(gen_eng); #endif OPENSSL_free(keyalgstr); X509_REQ_free(req); X509_free(x509ss); ASN1_INTEGER_free(serial); release_engine(e); if (passin != nofree_passin) OPENSSL_free(passin); if (passout != nofree_passout) OPENSSL_free(passout); return ret; } static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *subj, int multirdn, int attribs, unsigned long chtype) { int ret = 0, i; char no_prompt = 0; STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL; char *tmp, *dn_sect, *attr_sect; tmp = NCONF_get_string(req_conf, SECTION, PROMPT); if (tmp == NULL) ERR_clear_error(); if ((tmp != NULL) && strcmp(tmp, "no") == 0) no_prompt = 1; dn_sect = NCONF_get_string(req_conf, SECTION, DISTINGUISHED_NAME); if (dn_sect == NULL) { BIO_printf(bio_err, "unable to find '%s' in config\n", DISTINGUISHED_NAME); goto err; } dn_sk = NCONF_get_section(req_conf, dn_sect); if (dn_sk == NULL) { BIO_printf(bio_err, "unable to get '%s' section\n", dn_sect); goto err; } attr_sect = NCONF_get_string(req_conf, SECTION, ATTRIBUTES); if (attr_sect == NULL) { ERR_clear_error(); attr_sk = NULL; } else { attr_sk = NCONF_get_section(req_conf, attr_sect); if (attr_sk == NULL) { BIO_printf(bio_err, "unable to get '%s' section\n", attr_sect); goto err; } } /* setup version number */ if (!X509_REQ_set_version(req, 0L)) goto err; /* version 1 */ if (subj) i = build_subject(req, subj, chtype, multirdn); else if (no_prompt) i = auto_info(req, dn_sk, attr_sk, attribs, chtype); else i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs, chtype); if (!i) goto err; if (!X509_REQ_set_pubkey(req, pkey)) goto err; ret = 1; err: return ret; } /* * subject is expected to be in the format /type0=value0/type1=value1/type2=... * where characters may be escaped by \ */ static int build_subject(X509_REQ *req, const char *subject, unsigned long chtype, int multirdn) { X509_NAME *n; if ((n = parse_name(subject, chtype, multirdn)) == NULL) return 0; if (!X509_REQ_set_subject_name(req, n)) { X509_NAME_free(n); return 0; } X509_NAME_free(n); return 1; } static int prompt_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect, STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect, int attribs, unsigned long chtype) { int i; char *p, *q; char buf[100]; int nid, mval; long n_min, n_max; char *type, *value; const char *def; CONF_VALUE *v; X509_NAME *subj; subj = X509_REQ_get_subject_name(req); if (!batch) { BIO_printf(bio_err, "You are about to be asked to enter information that will be incorporated\n"); BIO_printf(bio_err, "into your certificate request.\n"); BIO_printf(bio_err, "What you are about to enter is what is called a Distinguished Name or a DN.\n"); BIO_printf(bio_err, "There are quite a few fields but you can leave some blank\n"); BIO_printf(bio_err, "For some fields there will be a default value,\n"); BIO_printf(bio_err, "If you enter '.', the field will be left blank.\n"); BIO_printf(bio_err, "-----\n"); } if (sk_CONF_VALUE_num(dn_sk)) { i = -1; start: for ( ; ; ) { i++; if (sk_CONF_VALUE_num(dn_sk) <= i) break; v = sk_CONF_VALUE_value(dn_sk, i); p = q = NULL; type = v->name; if (!check_end(type, "_min") || !check_end(type, "_max") || !check_end(type, "_default") || !check_end(type, "_value")) continue; /* * Skip past any leading X. X: X, etc to allow for multiple * instances */ for (p = v->name; *p; p++) if ((*p == ':') || (*p == ',') || (*p == '.')) { p++; if (*p) type = p; break; } if (*type == '+') { mval = -1; type++; } else { mval = 0; } /* If OBJ not recognised ignore it */ if ((nid = OBJ_txt2nid(type)) == NID_undef) goto start; if (!join(buf, sizeof(buf), v->name, "_default", "Name")) return 0; if ((def = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) { ERR_clear_error(); def = ""; } if (!join(buf, sizeof(buf), v->name, "_value", "Name")) return 0; if ((value = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) { ERR_clear_error(); value = NULL; } if (!join(buf, sizeof(buf), v->name, "_min", "Name")) return 0; if (!NCONF_get_number(req_conf, dn_sect, buf, &n_min)) { ERR_clear_error(); n_min = -1; } if (!join(buf, sizeof(buf), v->name, "_max", "Name")) return 0; if (!NCONF_get_number(req_conf, dn_sect, buf, &n_max)) { ERR_clear_error(); n_max = -1; } if (!add_DN_object(subj, v->value, def, value, nid, n_min, n_max, chtype, mval)) return 0; } if (X509_NAME_entry_count(subj) == 0) { BIO_printf(bio_err, "error, no objects specified in config file\n"); return 0; } if (attribs) { if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0) && (!batch)) { BIO_printf(bio_err, "\nPlease enter the following 'extra' attributes\n"); BIO_printf(bio_err, "to be sent with your certificate request\n"); } i = -1; start2: for ( ; ; ) { i++; if ((attr_sk == NULL) || (sk_CONF_VALUE_num(attr_sk) <= i)) break; v = sk_CONF_VALUE_value(attr_sk, i); type = v->name; if ((nid = OBJ_txt2nid(type)) == NID_undef) goto start2; if (!join(buf, sizeof(buf), type, "_default", "Name")) return 0; if ((def = NCONF_get_string(req_conf, attr_sect, buf)) == NULL) { ERR_clear_error(); def = ""; } if (!join(buf, sizeof(buf), type, "_value", "Name")) return 0; if ((value = NCONF_get_string(req_conf, attr_sect, buf)) == NULL) { ERR_clear_error(); value = NULL; } if (!join(buf, sizeof(buf), type,"_min", "Name")) return 0; if (!NCONF_get_number(req_conf, attr_sect, buf, &n_min)) { ERR_clear_error(); n_min = -1; } if (!join(buf, sizeof(buf), type, "_max", "Name")) return 0; if (!NCONF_get_number(req_conf, attr_sect, buf, &n_max)) { ERR_clear_error(); n_max = -1; } if (!add_attribute_object(req, v->value, def, value, nid, n_min, n_max, chtype)) return 0; } } } else { BIO_printf(bio_err, "No template, please set one up.\n"); return 0; } return 1; } static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk, STACK_OF(CONF_VALUE) *attr_sk, int attribs, unsigned long chtype) { int i, spec_char, plus_char; char *p, *q; char *type; CONF_VALUE *v; X509_NAME *subj; subj = X509_REQ_get_subject_name(req); for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) { int mval; v = sk_CONF_VALUE_value(dn_sk, i); p = q = NULL; type = v->name; /* * Skip past any leading X. X: X, etc to allow for multiple instances */ for (p = v->name; *p; p++) { #ifndef CHARSET_EBCDIC spec_char = ((*p == ':') || (*p == ',') || (*p == '.')); #else spec_char = ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.'])); #endif if (spec_char) { p++; if (*p) type = p; break; } } #ifndef CHARSET_EBCDIC plus_char = (*type == '+'); #else plus_char = (*type == os_toascii['+']); #endif if (plus_char) { type++; mval = -1; } else { mval = 0; } if (!X509_NAME_add_entry_by_txt(subj, type, chtype, (unsigned char *)v->value, -1, -1, mval)) return 0; } if (!X509_NAME_entry_count(subj)) { BIO_printf(bio_err, "error, no objects specified in config file\n"); return 0; } if (attribs) { for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++) { v = sk_CONF_VALUE_value(attr_sk, i); if (!X509_REQ_add1_attr_by_txt(req, v->name, chtype, (unsigned char *)v->value, -1)) return 0; } } return 1; } static int add_DN_object(X509_NAME *n, char *text, const char *def, char *value, int nid, int n_min, int n_max, unsigned long chtype, int mval) { int i, ret = 0; char buf[1024]; start: if (!batch) BIO_printf(bio_err, "%s [%s]:", text, def); (void)BIO_flush(bio_err); if (value != NULL) { if (!join(buf, sizeof(buf), value, "\n", "DN value")) return 0; BIO_printf(bio_err, "%s\n", value); } else { buf[0] = '\0'; if (!batch) { if (!fgets(buf, sizeof buf, stdin)) return 0; } else { buf[0] = '\n'; buf[1] = '\0'; } } if (buf[0] == '\0') return 0; if (buf[0] == '\n') { if ((def == NULL) || (def[0] == '\0')) return 1; if (!join(buf, sizeof(buf), def, "\n", "DN default")) return 0; } else if ((buf[0] == '.') && (buf[1] == '\n')) { return 1; } i = strlen(buf); if (buf[i - 1] != '\n') { BIO_printf(bio_err, "weird input :-(\n"); return 0; } buf[--i] = '\0'; #ifdef CHARSET_EBCDIC ebcdic2ascii(buf, buf, i); #endif if (!req_check_len(i, n_min, n_max)) { if (batch || value) return 0; goto start; } if (!X509_NAME_add_entry_by_NID(n, nid, chtype, (unsigned char *)buf, -1, -1, mval)) goto err; ret = 1; err: return ret; } static int add_attribute_object(X509_REQ *req, char *text, const char *def, char *value, int nid, int n_min, int n_max, unsigned long chtype) { int i; static char buf[1024]; start: if (!batch) BIO_printf(bio_err, "%s [%s]:", text, def); (void)BIO_flush(bio_err); if (value != NULL) { if (!join(buf, sizeof(buf), value, "\n", "Attribute value")) return 0; BIO_printf(bio_err, "%s\n", value); } else { buf[0] = '\0'; if (!batch) { if (!fgets(buf, sizeof buf, stdin)) return 0; } else { buf[0] = '\n'; buf[1] = '\0'; } } if (buf[0] == '\0') return 0; if (buf[0] == '\n') { if ((def == NULL) || (def[0] == '\0')) return 1; if (!join(buf, sizeof(buf), def, "\n", "Attribute default")) return 0; } else if ((buf[0] == '.') && (buf[1] == '\n')) { return 1; } i = strlen(buf); if (buf[i - 1] != '\n') { BIO_printf(bio_err, "weird input :-(\n"); return 0; } buf[--i] = '\0'; #ifdef CHARSET_EBCDIC ebcdic2ascii(buf, buf, i); #endif if (!req_check_len(i, n_min, n_max)) { if (batch || value) return 0; goto start; } if (!X509_REQ_add1_attr_by_NID(req, nid, chtype, (unsigned char *)buf, -1)) { BIO_printf(bio_err, "Error adding attribute\n"); ERR_print_errors(bio_err); goto err; } return 1; err: return 0; } static int req_check_len(int len, int n_min, int n_max) { if ((n_min > 0) && (len < n_min)) { BIO_printf(bio_err, "string is too short, it needs to be at least %d bytes long\n", n_min); return 0; } if ((n_max >= 0) && (len > n_max)) { BIO_printf(bio_err, "string is too long, it needs to be no more than %d bytes long\n", n_max); return 0; } return 1; } /* Check if the end of a string matches 'end' */ static int check_end(const char *str, const char *end) { size_t elen, slen; const char *tmp; elen = strlen(end); slen = strlen(str); if (elen > slen) return 1; tmp = str + slen - elen; return strcmp(tmp, end); } /* * Merge the two strings together into the result buffer checking for * overflow and producing an error message if there is. */ static int join(char buf[], size_t buf_size, const char *name, const char *tail, const char *desc) { const size_t name_len = strlen(name), tail_len = strlen(tail); if (name_len + tail_len + 1 > buf_size) { BIO_printf(bio_err, "%s '%s' too long\n", desc, name); return 0; } memcpy(buf, name, name_len); memcpy(buf + name_len, tail, tail_len + 1); return 1; } static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr, int *pkey_type, long *pkeylen, char **palgnam, ENGINE *keygen_engine) { EVP_PKEY_CTX *gctx = NULL; EVP_PKEY *param = NULL; long keylen = -1; BIO *pbio = NULL; const char *paramfile = NULL; if (gstr == NULL) { *pkey_type = EVP_PKEY_RSA; keylen = *pkeylen; } else if (gstr[0] >= '0' && gstr[0] <= '9') { *pkey_type = EVP_PKEY_RSA; keylen = atol(gstr); *pkeylen = keylen; } else if (strncmp(gstr, "param:", 6) == 0) { paramfile = gstr + 6; } else { const char *p = strchr(gstr, ':'); int len; ENGINE *tmpeng; const EVP_PKEY_ASN1_METHOD *ameth; if (p != NULL) len = p - gstr; else len = strlen(gstr); /* * The lookup of a the string will cover all engines so keep a note * of the implementation. */ ameth = EVP_PKEY_asn1_find_str(&tmpeng, gstr, len); if (ameth == NULL) { BIO_printf(bio_err, "Unknown algorithm %.*s\n", len, gstr); return NULL; } EVP_PKEY_asn1_get0_info(NULL, pkey_type, NULL, NULL, NULL, ameth); #ifndef OPENSSL_NO_ENGINE ENGINE_finish(tmpeng); #endif if (*pkey_type == EVP_PKEY_RSA) { if (p != NULL) { keylen = atol(p + 1); *pkeylen = keylen; } else { keylen = *pkeylen; } } else if (p != NULL) { paramfile = p + 1; } } if (paramfile != NULL) { pbio = BIO_new_file(paramfile, "r"); if (pbio == NULL) { BIO_printf(bio_err, "Can't open parameter file %s\n", paramfile); return NULL; } param = PEM_read_bio_Parameters(pbio, NULL); if (param == NULL) { X509 *x; (void)BIO_reset(pbio); x = PEM_read_bio_X509(pbio, NULL, NULL, NULL); if (x != NULL) { param = X509_get_pubkey(x); X509_free(x); } } BIO_free(pbio); if (param == NULL) { BIO_printf(bio_err, "Error reading parameter file %s\n", paramfile); return NULL; } if (*pkey_type == -1) { *pkey_type = EVP_PKEY_id(param); } else if (*pkey_type != EVP_PKEY_base_id(param)) { BIO_printf(bio_err, "Key Type does not match parameters\n"); EVP_PKEY_free(param); return NULL; } } if (palgnam != NULL) { const EVP_PKEY_ASN1_METHOD *ameth; ENGINE *tmpeng; const char *anam; ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type); if (ameth == NULL) { BIO_puts(bio_err, "Internal error: can't find key algorithm\n"); return NULL; } EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &anam, ameth); *palgnam = OPENSSL_strdup(anam); #ifndef OPENSSL_NO_ENGINE ENGINE_finish(tmpeng); #endif } if (param != NULL) { gctx = EVP_PKEY_CTX_new(param, keygen_engine); *pkeylen = EVP_PKEY_bits(param); EVP_PKEY_free(param); } else { gctx = EVP_PKEY_CTX_new_id(*pkey_type, keygen_engine); } if (gctx == NULL) { BIO_puts(bio_err, "Error allocating keygen context\n"); ERR_print_errors(bio_err); return NULL; } if (EVP_PKEY_keygen_init(gctx) <= 0) { BIO_puts(bio_err, "Error initializing keygen context\n"); ERR_print_errors(bio_err); EVP_PKEY_CTX_free(gctx); return NULL; } #ifndef OPENSSL_NO_RSA if ((*pkey_type == EVP_PKEY_RSA) && (keylen != -1)) { if (EVP_PKEY_CTX_set_rsa_keygen_bits(gctx, keylen) <= 0) { BIO_puts(bio_err, "Error setting RSA keysize\n"); ERR_print_errors(bio_err); EVP_PKEY_CTX_free(gctx); return NULL; } } #endif return gctx; } static int genpkey_cb(EVP_PKEY_CTX *ctx) { char c = '*'; BIO *b = EVP_PKEY_CTX_get_app_data(ctx); int p; p = EVP_PKEY_CTX_get_keygen_info(ctx, 0); if (p == 0) c = '.'; if (p == 1) c = '+'; if (p == 2) c = '*'; if (p == 3) c = '\n'; BIO_write(b, &c, 1); (void)BIO_flush(b); return 1; } static int do_sign_init(EVP_MD_CTX *ctx, EVP_PKEY *pkey, const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts) { EVP_PKEY_CTX *pkctx = NULL; int i; if (ctx == NULL) return 0; if (!EVP_DigestSignInit(ctx, &pkctx, md, NULL, pkey)) return 0; for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) { char *sigopt = sk_OPENSSL_STRING_value(sigopts, i); if (pkey_ctrl_string(pkctx, sigopt) <= 0) { BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt); ERR_print_errors(bio_err); return 0; } } return 1; } int do_X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts) { int rv; EVP_MD_CTX *mctx = EVP_MD_CTX_new(); rv = do_sign_init(mctx, pkey, md, sigopts); if (rv > 0) rv = X509_sign_ctx(x, mctx); EVP_MD_CTX_free(mctx); return rv > 0 ? 1 : 0; } int do_X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts) { int rv; EVP_MD_CTX *mctx = EVP_MD_CTX_new(); rv = do_sign_init(mctx, pkey, md, sigopts); if (rv > 0) rv = X509_REQ_sign_ctx(x, mctx); EVP_MD_CTX_free(mctx); return rv > 0 ? 1 : 0; } int do_X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts) { int rv; EVP_MD_CTX *mctx = EVP_MD_CTX_new(); rv = do_sign_init(mctx, pkey, md, sigopts); if (rv > 0) rv = X509_CRL_sign_ctx(x, mctx); EVP_MD_CTX_free(mctx); return rv > 0 ? 1 : 0; }