/* * Copyright 1995-2022 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 #include #include #include #include #include "apps.h" #include "progs.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef OPENSSL_NO_DSA # include #endif #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 #define DEFAULT_DAYS 30 /* default cert validity period in days */ #define UNSET_DAYS -2 /* -1 may be used for testing expiration checks */ #define EXT_COPY_UNSET -1 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, X509_NAME *fsubj, int mutlirdn, int attribs, unsigned long chtype); 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 build_data(char *text, const char *def, char *value, int n_min, int n_max, char *buf, const int buf_size, const char *desc1, const char *desc2); 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, char **pkeytype, long *pkeylen, ENGINE *keygen_engine); static const char *section = "req"; static CONF *req_conf = NULL; static CONF *addext_conf = NULL; static int batch = 0; typedef enum OPTION_choice { OPT_COMMON, 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_VFYOPT, OPT_BATCH, OPT_NEWHDR, OPT_MODULUS, OPT_VERIFY, OPT_NOENC, OPT_NODES, OPT_NOOUT, OPT_VERBOSE, OPT_UTF8, OPT_NAMEOPT, OPT_REQOPT, OPT_SUBJ, OPT_SUBJECT, OPT_TEXT, OPT_X509, OPT_X509V1, OPT_CA, OPT_CAKEY, OPT_MULTIVALUE_RDN, OPT_DAYS, OPT_SET_SERIAL, OPT_COPY_EXTENSIONS, OPT_EXTENSIONS, OPT_REQEXTS, OPT_ADDEXT, OPT_PRECERT, OPT_MD, OPT_SECTION, OPT_R_ENUM, OPT_PROV_ENUM } OPTION_CHOICE; const OPTIONS req_options[] = { OPT_SECTION("General"), {"help", OPT_HELP, '-', "Display this summary"}, #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 {"in", OPT_IN, '<', "X.509 request input file (default stdin)"}, {"inform", OPT_INFORM, 'F', "CSR input format to use (PEM or DER; by default try PEM first)"}, {"verify", OPT_VERIFY, '-', "Verify self-signature on the request"}, OPT_SECTION("Certificate"), {"new", OPT_NEW, '-', "New request"}, {"config", OPT_CONFIG, '<', "Request template file"}, {"section", OPT_SECTION, 's', "Config section to use (default \"req\")"}, {"utf8", OPT_UTF8, '-', "Input characters are UTF8 (default ASCII)"}, {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"}, {"reqopt", OPT_REQOPT, 's', "Various request text options"}, {"text", OPT_TEXT, '-', "Text form of request"}, {"x509", OPT_X509, '-', "Output an X.509 certificate structure instead of a cert request"}, {"x509v1", OPT_X509V1, '-', "Request cert generation with X.509 version 1"}, {"CA", OPT_CA, '<', "Issuer cert to use for signing a cert, implies -x509"}, {"CAkey", OPT_CAKEY, 's', "Issuer private key to use with -CA; default is -CA arg"}, {OPT_MORE_STR, 1, 1, "(Required by some CA's)"}, {"subj", OPT_SUBJ, 's', "Set or modify subject of request or cert"}, {"subject", OPT_SUBJECT, '-', "Print the subject of the output request or cert"}, {"multivalue-rdn", OPT_MULTIVALUE_RDN, '-', "Deprecated; multi-valued RDNs support is always on."}, {"days", OPT_DAYS, 'p', "Number of days cert is valid for"}, {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"}, {"copy_extensions", OPT_COPY_EXTENSIONS, 's', "copy extensions from request when using -x509"}, {"extensions", OPT_EXTENSIONS, 's', "Cert or request extension section (override value in config file)"}, {"reqexts", OPT_REQEXTS, 's', "An alias for -extensions"}, {"addext", OPT_ADDEXT, 's', "Additional cert extension key=value pair (may be given more than once)"}, {"precert", OPT_PRECERT, '-', "Add a poison extension to generated cert (implies -new)"}, OPT_SECTION("Keys and Signing"), {"key", OPT_KEY, 's', "Key for signing, and to include unless -in given"}, {"keyform", OPT_KEYFORM, 'f', "Key file format (ENGINE, other values ignored)"}, {"pubkey", OPT_PUBKEY, '-', "Output public key"}, {"keyout", OPT_KEYOUT, '>', "File to write private key to"}, {"passin", OPT_PASSIN, 's', "Private key and certificate password source"}, {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, {"newkey", OPT_NEWKEY, 's', "Generate new key with [:] or [:] or param:"}, {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"}, {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"}, {"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"}, {"", OPT_MD, '-', "Any supported digest"}, OPT_SECTION("Output"), {"out", OPT_OUT, '>', "Output file"}, {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"}, {"batch", OPT_BATCH, '-', "Do not ask anything during request generation"}, {"verbose", OPT_VERBOSE, '-', "Verbose output"}, {"noenc", OPT_NOENC, '-', "Don't encrypt private keys"}, {"nodes", OPT_NODES, '-', "Don't encrypt private keys; deprecated"}, {"noout", OPT_NOOUT, '-', "Do not output REQ"}, {"newhdr", OPT_NEWHDR, '-', "Output \"NEW\" in the header lines"}, {"modulus", OPT_MODULUS, '-', "RSA modulus"}, OPT_R_OPTIONS, OPT_PROV_OPTIONS, {NULL} }; /* * An LHASH of strings, where each string is an extension name. */ static unsigned long ext_name_hash(const OPENSSL_STRING *a) { return OPENSSL_LH_strhash((const char *)a); } static int ext_name_cmp(const OPENSSL_STRING *a, const OPENSSL_STRING *b) { return strcmp((const char *)a, (const char *)b); } static void exts_cleanup(OPENSSL_STRING *x) { OPENSSL_free((char *)x); } /* * Is the |kv| key already duplicated? * Return 0 if unique, -1 on runtime error, -2 on syntax error; 1 if found. */ static int duplicated(LHASH_OF(OPENSSL_STRING) *addexts, char *kv) { char *p; size_t off; /* Check syntax. */ /* Skip leading whitespace, make a copy. */ while (isspace(*kv)) kv++; if ((p = strchr(kv, '=')) == NULL) { BIO_printf(bio_err, "Parse error on -addext: missing '='\n"); return -2; } off = p - kv; if ((kv = OPENSSL_strdup(kv)) == NULL) return -1; /* Skip trailing space before the equal sign. */ for (p = kv + off; p > kv; --p) if (!isspace(p[-1])) break; if (p == kv) { BIO_printf(bio_err, "Parse error on -addext: missing key\n"); OPENSSL_free(kv); return -2; } *p = '\0'; /* Finally have a clean "key"; see if it's there [by attempt to add it]. */ p = (char *)lh_OPENSSL_STRING_insert(addexts, (OPENSSL_STRING *)kv); if (p != NULL) { BIO_printf(bio_err, "Duplicate extension name: %s\n", kv); OPENSSL_free(p); return 1; } else if (lh_OPENSSL_STRING_error(addexts)) { OPENSSL_free(kv); return -1; } return 0; } int req_main(int argc, char **argv) { ASN1_INTEGER *serial = NULL; BIO *out = NULL; ENGINE *e = NULL, *gen_eng = NULL; EVP_PKEY *pkey = NULL, *CAkey = NULL; EVP_PKEY_CTX *genctx = NULL; STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL, *vfyopts = NULL; LHASH_OF(OPENSSL_STRING) *addexts = NULL; X509 *new_x509 = NULL, *CAcert = NULL; X509_REQ *req = NULL; EVP_CIPHER *cipher = NULL; int ext_copy = EXT_COPY_UNSET; BIO *addext_bio = NULL; char *extsect = NULL; const char *infile = NULL, *CAfile = NULL, *CAkeyfile = NULL; char *outfile = NULL, *keyfile = NULL, *digest = NULL; char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL; char *passin = NULL, *passout = NULL; char *nofree_passin = NULL, *nofree_passout = NULL; char *subj = NULL; X509_NAME *fsubj = NULL; char *template = default_config_file, *keyout = NULL; const char *keyalg = NULL; OPTION_CHOICE o; int days = UNSET_DAYS; int ret = 1, gen_x509 = 0, i = 0, newreq = 0, verbose = 0; int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, keyform = FORMAT_UNDEF; int modulus = 0, multirdn = 1, verify = 0, noout = 0, text = 0; int noenc = 0, newhdr = 0, subject = 0, pubkey = 0, precert = 0, x509v1 = 0; long newkey_len = -1; unsigned long chtype = MBSTRING_ASC, reqflag = 0; #ifndef OPENSSL_NO_DES cipher = (EVP_CIPHER *)EVP_des_ede3_cbc(); #endif opt_set_unknown_name("digest"); 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 = setup_engine(opt_arg(), 0); 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_SECTION: section = 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_PROV_CASES: if (!opt_provider(o)) goto end; break; case OPT_NEWKEY: keyalg = opt_arg(); newreq = 1; break; case OPT_PKEYOPT: if (pkeyopts == NULL) pkeyopts = sk_OPENSSL_STRING_new_null(); if (pkeyopts == NULL || !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_VFYOPT: if (!vfyopts) vfyopts = sk_OPENSSL_STRING_new_null(); if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, 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: case OPT_NOENC: noenc = 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_X509V1: x509v1 = 1; /* fall thru */ case OPT_X509: gen_x509 = 1; break; case OPT_CA: CAfile = opt_arg(); gen_x509 = 1; break; case OPT_CAKEY: CAkeyfile = opt_arg(); break; case OPT_DAYS: days = atoi(opt_arg()); if (days < -1) { BIO_printf(bio_err, "%s: -days parameter arg must be >= -1\n", prog); goto end; } 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: /* obsolete */ break; case OPT_COPY_EXTENSIONS: if (!set_ext_copy(&ext_copy, opt_arg())) { BIO_printf(bio_err, "Invalid extension copy option: \"%s\"\n", opt_arg()); goto end; } break; case OPT_EXTENSIONS: case OPT_REQEXTS: extsect = opt_arg(); break; case OPT_ADDEXT: p = opt_arg(); if (addexts == NULL) { addexts = lh_OPENSSL_STRING_new(ext_name_hash, ext_name_cmp); addext_bio = BIO_new(BIO_s_mem()); if (addexts == NULL || addext_bio == NULL) goto end; } i = duplicated(addexts, p); if (i == 1) goto opthelp; if (i == -1) BIO_printf(bio_err, "Internal error handling -addext %s\n", p); if (i < 0 || BIO_printf(addext_bio, "%s\n", p) < 0) goto end; break; case OPT_PRECERT: newreq = precert = 1; break; case OPT_MD: digest = opt_unknown(); break; } } /* No extra arguments. */ if (!opt_check_rest_arg(NULL)) goto opthelp; if (!app_RAND_load()) goto end; if (!gen_x509) { if (days != UNSET_DAYS) BIO_printf(bio_err, "Ignoring -days without -x509; not generating a certificate\n"); if (ext_copy == EXT_COPY_NONE) BIO_printf(bio_err, "Ignoring -copy_extensions 'none' when -x509 is not given\n"); } if (infile == NULL) { if (gen_x509) newreq = 1; else if (!newreq) BIO_printf(bio_err, "Warning: Will read cert request from stdin since no -in option is given\n"); } if (!app_passwd(passargin, passargout, &passin, &passout)) { BIO_printf(bio_err, "Error getting passwords\n"); goto end; } if ((req_conf = app_load_config_verbose(template, verbose)) == NULL) goto end; if (addext_bio != NULL) { if (verbose) BIO_printf(bio_err, "Using additional configuration from -addext options\n"); if ((addext_conf = app_load_config_bio(addext_bio, NULL)) == NULL) goto end; } 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 = BIO_new_file(p, "r"); if (oid_bio == NULL) { if (verbose) BIO_printf(bio_err, "Problems opening '%s' for extra OIDs\n", p); } else { OBJ_create_objects(oid_bio); BIO_free(oid_bio); } } } if (!add_oid_section(req_conf)) goto end; /* Check that any specified digest is fetchable */ if (digest != NULL) { if (!opt_check_md(digest)) goto opthelp; } else { /* No digest specified, default to configuration */ p = NCONF_get_string(req_conf, section, "default_md"); if (p == NULL) ERR_clear_error(); else digest = p; } if (extsect == NULL) { extsect = NCONF_get_string(req_conf, section, gen_x509 ? V3_EXTENSIONS : REQ_EXTENSIONS); if (extsect == NULL) ERR_clear_error(); } if (extsect != NULL) { /* Check syntax of extension section in config file */ X509V3_CTX ctx; X509V3_set_ctx_test(&ctx); X509V3_set_nconf(&ctx, req_conf); if (!X509V3_EXT_add_nconf(req_conf, &ctx, extsect, NULL)) { BIO_printf(bio_err, "Error checking %s extension section %s\n", gen_x509 ? "x509" : "request", extsect); goto end; } } if (addext_conf != NULL) { /* Check syntax of command line extensions */ X509V3_CTX ctx; X509V3_set_ctx_test(&ctx); X509V3_set_nconf(&ctx, addext_conf); if (!X509V3_EXT_add_nconf(addext_conf, &ctx, "default", NULL)) { BIO_printf(bio_err, "Error checking extensions defined using -addext\n"); 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 (keyfile != NULL) { pkey = load_key(keyfile, keyform, 0, passin, e, "private key"); if (pkey == NULL) goto end; app_RAND_load_conf(req_conf, section); } if (keyalg != NULL && pkey != NULL) { BIO_printf(bio_err, "Warning: Not generating key via given -newkey option since -key is given\n"); /* Better throw an error in this case */ } if (newreq && pkey == NULL) { app_RAND_load_conf(req_conf, section); if (!NCONF_get_number(req_conf, section, BITS, &newkey_len)) newkey_len = DEFAULT_KEY_LENGTH; genctx = set_keygen_ctx(keyalg, &keyalgstr, &newkey_len, gen_eng); if (genctx == NULL) goto end; if (newkey_len < MIN_KEY_LENGTH && (EVP_PKEY_CTX_is_a(genctx, "RSA") || EVP_PKEY_CTX_is_a(genctx, "RSA-PSS") || EVP_PKEY_CTX_is_a(genctx, "DSA"))) { BIO_printf(bio_err, "Private key length too short, needs to be at least %d bits, not %ld.\n", MIN_KEY_LENGTH, newkey_len); goto end; } if (newkey_len > OPENSSL_RSA_MAX_MODULUS_BITS && (EVP_PKEY_CTX_is_a(genctx, "RSA") || EVP_PKEY_CTX_is_a(genctx, "RSA-PSS"))) BIO_printf(bio_err, "Warning: It is not recommended to use more than %d bit for RSA keys.\n" " Your key size is %ld! Larger key size may behave not as expected.\n", OPENSSL_RSA_MAX_MODULUS_BITS, newkey_len); #ifndef OPENSSL_NO_DSA if (EVP_PKEY_CTX_is_a(genctx, "DSA") && newkey_len > OPENSSL_DSA_MAX_MODULUS_BITS) BIO_printf(bio_err, "Warning: It is not recommended to use more than %d bit for DSA keys.\n" " Your key size is %ld! Larger key size may behave not as expected.\n", OPENSSL_DSA_MAX_MODULUS_BITS, newkey_len); #endif 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, "Key parameter error \"%s\"\n", genopt); goto end; } } } EVP_PKEY_CTX_set_cb(genctx, progress_cb); EVP_PKEY_CTX_set_app_data(genctx, bio_err); pkey = app_keygen(genctx, keyalgstr, newkey_len, verbose); EVP_PKEY_CTX_free(genctx); genctx = NULL; } if (keyout == NULL && keyfile == NULL) { keyout = NCONF_get_string(req_conf, section, KEYFILE); if (keyout == NULL) ERR_clear_error(); } if (pkey != NULL && (keyfile == NULL || keyout != NULL)) { if (verbose) { BIO_printf(bio_err, "Writing private key to "); if (keyout == NULL) BIO_printf(bio_err, "stdout\n"); else BIO_printf(bio_err, "'%s'\n", keyout); } out = bio_open_owner(keyout, outformat, newreq); 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 (noenc) cipher = NULL; i = 0; loop: 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"); } /* * subj is expected to be in the format /type0=value0/type1=value1/type2=... * where characters may be escaped by \ */ if (subj != NULL && (fsubj = parse_name(subj, chtype, multirdn, "subject")) == NULL) goto end; if (!newreq) { if (keyfile != NULL) BIO_printf(bio_err, "Warning: Not placing -key in cert or request since request is used\n"); req = load_csr_autofmt(infile /* if NULL, reads from stdin */, informat, vfyopts, "X509 request"); if (req == NULL) goto end; } else if (infile != NULL) { BIO_printf(bio_err, "Warning: Ignoring -in option since -new or -newkey or -precert is given\n"); /* Better throw an error in this case, as done in the x509 app */ } if (CAkeyfile == NULL) CAkeyfile = CAfile; if (CAkeyfile != NULL) { if (CAfile == NULL) { BIO_printf(bio_err, "Warning: Ignoring -CAkey option since no -CA option is given\n"); } else { if ((CAkey = load_key(CAkeyfile, FORMAT_UNDEF, 0, passin, e, CAkeyfile != CAfile ? "issuer private key from -CAkey arg" : "issuer private key from -CA arg")) == NULL) goto end; } } if (CAfile != NULL) { if ((CAcert = load_cert_pass(CAfile, FORMAT_UNDEF, 1, passin, "issuer cert from -CA arg")) == NULL) goto end; if (!X509_check_private_key(CAcert, CAkey)) { BIO_printf(bio_err, "Issuer CA certificate and key do not match\n"); goto end; } } if (newreq || gen_x509) { if (CAcert == NULL && pkey == NULL) { BIO_printf(bio_err, "Must provide a signature key using -key or" " provide -CA / -CAkey\n"); goto end; } if (req == NULL) { req = X509_REQ_new_ex(app_get0_libctx(), app_get0_propq()); if (req == NULL) { goto end; } if (!make_REQ(req, pkey, fsubj, multirdn, !gen_x509, chtype)) { BIO_printf(bio_err, "Error making certificate request\n"); goto end; } /* Note that -x509 can take over -key and -subj option values. */ } if (gen_x509) { EVP_PKEY *pub_key = X509_REQ_get0_pubkey(req); EVP_PKEY *issuer_key = CAcert != NULL ? CAkey : pkey; X509V3_CTX ext_ctx; X509_NAME *issuer = CAcert != NULL ? X509_get_subject_name(CAcert) : X509_REQ_get_subject_name(req); X509_NAME *n_subj = fsubj != NULL ? fsubj : X509_REQ_get_subject_name(req); if (CAcert != NULL && keyfile != NULL) BIO_printf(bio_err, "Warning: Not using -key or -newkey for signing since -CA option is given\n"); if ((new_x509 = X509_new_ex(app_get0_libctx(), app_get0_propq())) == NULL) goto end; if (serial != NULL) { if (!X509_set_serialNumber(new_x509, serial)) goto end; } else { if (!rand_serial(NULL, X509_get_serialNumber(new_x509))) goto end; } if (!X509_set_issuer_name(new_x509, issuer)) goto end; if (days == UNSET_DAYS) { days = DEFAULT_DAYS; } if (!set_cert_times(new_x509, NULL, NULL, days)) goto end; if (!X509_set_subject_name(new_x509, n_subj)) goto end; if (!pub_key || !X509_set_pubkey(new_x509, pub_key)) goto end; if (ext_copy == EXT_COPY_UNSET) { if (infile != NULL) BIO_printf(bio_err, "Warning: No -copy_extensions given; ignoring any extensions in the request\n"); } else if (!copy_extensions(new_x509, req, ext_copy)) { BIO_printf(bio_err, "Error copying extensions from request\n"); goto end; } /* Set up V3 context struct */ X509V3_set_ctx(&ext_ctx, CAcert != NULL ? CAcert : new_x509, new_x509, NULL, NULL, X509V3_CTX_REPLACE); /* prepare fallback for AKID, but only if issuer cert == new_x509 */ if (CAcert == NULL) { if (!X509V3_set_issuer_pkey(&ext_ctx, issuer_key)) goto end; if (!cert_matches_key(new_x509, issuer_key)) BIO_printf(bio_err, "Warning: Signature key and public key of cert do not match\n"); } X509V3_set_nconf(&ext_ctx, req_conf); /* Add extensions */ if (extsect != NULL && !X509V3_EXT_add_nconf(req_conf, &ext_ctx, extsect, new_x509)) { BIO_printf(bio_err, "Error adding x509 extensions from section %s\n", extsect); goto end; } if (addext_conf != NULL && !X509V3_EXT_add_nconf(addext_conf, &ext_ctx, "default", new_x509)) { BIO_printf(bio_err, "Error adding x509 extensions defined via -addext\n"); goto end; } /* If a pre-cert was requested, we need to add a poison extension */ if (precert) { if (X509_add1_ext_i2d(new_x509, NID_ct_precert_poison, NULL, 1, 0) != 1) { BIO_printf(bio_err, "Error adding poison extension\n"); goto end; } } i = do_X509_sign(new_x509, x509v1, issuer_key, digest, sigopts, &ext_ctx); if (!i) goto end; } else { X509V3_CTX ext_ctx; if (precert) { BIO_printf(bio_err, "Warning: Ignoring -precert flag since no cert is produced\n"); } /* Set up V3 context struct */ X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, X509V3_CTX_REPLACE); X509V3_set_nconf(&ext_ctx, req_conf); /* Add extensions */ if (extsect != NULL && !X509V3_EXT_REQ_add_nconf(req_conf, &ext_ctx, extsect, req)) { BIO_printf(bio_err, "Error adding request extensions from section %s\n", extsect); goto end; } if (addext_conf != NULL && !X509V3_EXT_REQ_add_nconf(addext_conf, &ext_ctx, "default", req)) { BIO_printf(bio_err, "Error adding request extensions defined via -addext\n"); goto end; } i = do_X509_REQ_sign(req, pkey, digest, sigopts); if (!i) goto end; } } if (subj != NULL && !newreq && !gen_x509) { if (verbose) { BIO_printf(out, "Modifying subject of certificate request\n"); print_name(out, "Old subject=", X509_REQ_get_subject_name(req)); } if (!X509_REQ_set_subject_name(req, fsubj)) { BIO_printf(bio_err, "Error modifying subject of certificate request\n"); goto end; } if (verbose) { print_name(out, "New subject=", X509_REQ_get_subject_name(req)); } } if (verify) { EVP_PKEY *tpubkey = pkey; if (tpubkey == NULL) { tpubkey = X509_REQ_get0_pubkey(req); if (tpubkey == NULL) goto end; } i = do_X509_REQ_verify(req, tpubkey, vfyopts); if (i < 0) goto end; if (i == 0) BIO_printf(bio_err, "Certificate request self-signature verify failure\n"); else /* i > 0 */ BIO_printf(bio_out, "Certificate request self-signature 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"); goto end; } PEM_write_bio_PUBKEY(out, tpubkey); } if (text) { if (gen_x509) ret = X509_print_ex(out, new_x509, get_nameopt(), reqflag); else ret = X509_REQ_print_ex(out, req, get_nameopt(), reqflag); if (ret == 0) { if (gen_x509) BIO_printf(bio_err, "Error printing certificate\n"); else BIO_printf(bio_err, "Error printing certificate request\n"); goto end; } } if (subject) { print_name(out, "subject=", gen_x509 ? X509_get_subject_name(new_x509) : X509_REQ_get_subject_name(req)); } if (modulus) { EVP_PKEY *tpubkey; if (gen_x509) tpubkey = X509_get0_pubkey(new_x509); else tpubkey = X509_REQ_get0_pubkey(req); if (tpubkey == NULL) { fprintf(stdout, "Modulus is unavailable\n"); goto end; } fprintf(stdout, "Modulus="); if (EVP_PKEY_is_a(tpubkey, "RSA") || EVP_PKEY_is_a(tpubkey, "RSA-PSS")) { BIGNUM *n = NULL; if (!EVP_PKEY_get_bn_param(tpubkey, "n", &n)) goto end; BN_print(out, n); BN_free(n); } else { fprintf(stdout, "Wrong Algorithm type"); } fprintf(stdout, "\n"); } if (!noout && !gen_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 certificate request\n"); goto end; } } if (!noout && gen_x509 && new_x509 != NULL) { if (outformat == FORMAT_ASN1) i = i2d_X509_bio(out, new_x509); else i = PEM_write_bio_X509(out, new_x509); 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); NCONF_free(addext_conf); BIO_free(addext_bio); BIO_free_all(out); EVP_PKEY_free(pkey); EVP_PKEY_CTX_free(genctx); sk_OPENSSL_STRING_free(pkeyopts); sk_OPENSSL_STRING_free(sigopts); sk_OPENSSL_STRING_free(vfyopts); lh_OPENSSL_STRING_doall(addexts, exts_cleanup); lh_OPENSSL_STRING_free(addexts); #ifndef OPENSSL_NO_ENGINE release_engine(gen_eng); #endif OPENSSL_free(keyalgstr); X509_REQ_free(req); X509_NAME_free(fsubj); X509_free(new_x509); X509_free(CAcert); EVP_PKEY_free(CAkey); 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, X509_NAME *fsubj, int multirdn, int attribs, unsigned long chtype) { int ret = 0, i; char no_prompt = 0; STACK_OF(CONF_VALUE) *dn_sk = NULL, *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) { ERR_clear_error(); } else { 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(); } 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; } } /* so far there is only version 1 */ if (!X509_REQ_set_version(req, X509_REQ_VERSION_1)) goto err; if (fsubj != NULL) i = X509_REQ_set_subject_name(req, fsubj); 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; } 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 = 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 ret = 0; char buf[1024]; ret = build_data(text, def, value, n_min, n_max, buf, sizeof(buf), "DN value", "DN default"); if ((ret == 0) || (ret == 1)) return ret; ret = 1; if (!X509_NAME_add_entry_by_NID(n, nid, chtype, (unsigned char *)buf, -1, -1, mval)) ret = 0; 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 ret = 0; char buf[1024]; ret = build_data(text, def, value, n_min, n_max, buf, sizeof(buf), "Attribute value", "Attribute default"); if ((ret == 0) || (ret == 1)) return ret; ret = 1; if (!X509_REQ_add1_attr_by_NID(req, nid, chtype, (unsigned char *)buf, -1)) { BIO_printf(bio_err, "Error adding attribute\n"); ret = 0; } return ret; } static int build_data(char *text, const char *def, char *value, int n_min, int n_max, char *buf, const int buf_size, const char *desc1, const char *desc2) { int i; start: if (!batch) BIO_printf(bio_err, "%s [%s]:", text, def); (void)BIO_flush(bio_err); if (value != NULL) { if (!join(buf, buf_size, value, "\n", desc1)) return 0; BIO_printf(bio_err, "%s\n", value); } else { buf[0] = '\0'; if (!batch) { if (!fgets(buf, buf_size, 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, buf_size, def, "\n", desc2)) return 0; } else if ((buf[0] == '.') && (buf[1] == '\n')) { return 1; } i = strlen(buf); if (buf[i - 1] != '\n') { BIO_printf(bio_err, "Missing newline at end of 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; } return 2; } 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 too short, must be at least %d bytes long\n", n_min); return 0; } if (n_max >= 0 && len > n_max) { BIO_printf(bio_err, "String too long, must be at most %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, char **pkeytype, long *pkeylen, ENGINE *keygen_engine) { EVP_PKEY_CTX *gctx = NULL; EVP_PKEY *param = NULL; long keylen = -1; BIO *pbio = NULL; const char *keytype = NULL; size_t keytypelen = 0; int expect_paramfile = 0; const char *paramfile = NULL; /* Treat the first part of gstr, and only that */ if (gstr == NULL) { /* * Special case: when no string given, default to RSA and the * key length given by |*pkeylen|. */ keytype = "RSA"; keylen = *pkeylen; } else if (gstr[0] >= '0' && gstr[0] <= '9') { /* Special case: only keylength given from string, so default to RSA */ keytype = "RSA"; /* The second part treatment will do the rest */ } else { const char *p = strchr(gstr, ':'); int len; if (p != NULL) len = p - gstr; else len = strlen(gstr); if (strncmp(gstr, "param", len) == 0) { expect_paramfile = 1; if (p == NULL) { BIO_printf(bio_err, "Parameter file requested but no path given: %s\n", gstr); return NULL; } } else { keytype = gstr; keytypelen = len; } if (p != NULL) gstr = gstr + len + 1; else gstr = NULL; } /* Treat the second part of gstr, if there is one */ if (gstr != NULL) { /* If the second part starts with a digit, we assume it's a size */ if (!expect_paramfile && gstr[0] >= '0' && gstr[0] <= '9') keylen = atol(gstr); else paramfile = gstr; } if (paramfile != NULL) { pbio = BIO_new_file(paramfile, "r"); if (pbio == NULL) { BIO_printf(bio_err, "Cannot 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 (keytype == NULL) { keytype = EVP_PKEY_get0_type_name(param); if (keytype == NULL) { EVP_PKEY_free(param); BIO_puts(bio_err, "Unable to determine key type\n"); return NULL; } } } if (keytypelen > 0) *pkeytype = OPENSSL_strndup(keytype, keytypelen); else *pkeytype = OPENSSL_strdup(keytype); if (*pkeytype == NULL) { BIO_printf(bio_err, "Out of memory\n"); EVP_PKEY_free(param); return NULL; } if (keylen >= 0) *pkeylen = keylen; if (param != NULL) { if (!EVP_PKEY_is_a(param, *pkeytype)) { BIO_printf(bio_err, "Key type does not match parameters\n"); EVP_PKEY_free(param); return NULL; } if (keygen_engine != NULL) gctx = EVP_PKEY_CTX_new(param, keygen_engine); else gctx = EVP_PKEY_CTX_new_from_pkey(app_get0_libctx(), param, app_get0_propq()); *pkeylen = EVP_PKEY_get_bits(param); EVP_PKEY_free(param); } else { if (keygen_engine != NULL) { int pkey_id = get_legacy_pkey_id(app_get0_libctx(), *pkeytype, keygen_engine); if (pkey_id != NID_undef) gctx = EVP_PKEY_CTX_new_id(pkey_id, keygen_engine); } else { gctx = EVP_PKEY_CTX_new_from_name(app_get0_libctx(), *pkeytype, app_get0_propq()); } } if (gctx == NULL) { BIO_puts(bio_err, "Error allocating keygen context\n"); return NULL; } if (EVP_PKEY_keygen_init(gctx) <= 0) { BIO_puts(bio_err, "Error initializing keygen context\n"); EVP_PKEY_CTX_free(gctx); return NULL; } if (keylen == -1 && (EVP_PKEY_CTX_is_a(gctx, "RSA") || EVP_PKEY_CTX_is_a(gctx, "RSA-PSS"))) keylen = *pkeylen; if (keylen != -1) { OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END }; size_t bits = keylen; params[0] = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_BITS, &bits); if (EVP_PKEY_CTX_set_params(gctx, params) <= 0) { BIO_puts(bio_err, "Error setting keysize\n"); EVP_PKEY_CTX_free(gctx); return NULL; } } return gctx; }