[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit

Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/lib/libssl/openssl-1.1.1o/apps/req.c b/ap/lib/libssl/openssl-1.1.1o/apps/req.c
new file mode 100644
index 0000000..a603907
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/apps/req.c
@@ -0,0 +1,1679 @@
+/*
+ * Copyright 1995-2019 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 <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+#include <ctype.h>
+#include "apps.h"
+#include "progs.h"
+#include <openssl/bio.h>
+#include <openssl/evp.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/asn1.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/objects.h>
+#include <openssl/pem.h>
+#include <openssl/bn.h>
+#include <openssl/lhash.h>
+#ifndef OPENSSL_NO_RSA
+# include <openssl/rsa.h>
+#endif
+#ifndef OPENSSL_NO_DSA
+# include <openssl/dsa.h>
+#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 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,
+                                    int *pkey_type, long *pkeylen,
+                                    char **palgnam, ENGINE *keygen_engine);
+static CONF *req_conf = NULL;
+static CONF *addext_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_ADDEXT, 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"},
+    {"addext", OPT_ADDEXT, 's',
+     "Additional cert extension key=value pair (may be given more than once)"},
+    {"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}
+};
+
+
+/*
+ * 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?  This is remarkably tricky to get
+ * right.  Return 0 if unique, -1 on runtime error; 1 if found or a syntax
+ * error.
+ */
+static int duplicated(LHASH_OF(OPENSSL_STRING) *addexts, char *kv)
+{
+    char *p;
+    size_t off;
+
+    /* Check syntax. */
+    /* Skip leading whitespace, make a copy. */
+    while (*kv && isspace(*kv))
+        if (*++kv == '\0')
+            return 1;
+    if ((p = strchr(kv, '=')) == NULL)
+        return 1;
+    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) {
+        OPENSSL_free(kv);
+        return 1;
+    }
+    *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) {
+        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 *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;
+    LHASH_OF(OPENSSL_STRING) *addexts = NULL;
+    X509 *x509ss = NULL;
+    X509_REQ *req = NULL;
+    const EVP_CIPHER *cipher = NULL;
+    const EVP_MD *md_alg = NULL, *digest = NULL;
+    BIO *addext_bio = 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 = 0, 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_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 < 0 || BIO_printf(addext_bio, "%s\n", opt_arg()) < 0)
+                goto end;
+            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\n");
+    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);
+    if ((req_conf = app_load_config(template)) == NULL)
+        goto end;
+    if (addext_bio) {
+        if (verbose)
+            BIO_printf(bio_err,
+                       "Using additional configuration from command line\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;
+
+            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 (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 Loading command line extensions\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 (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 (pkey_type == EVP_PKEY_RSA && newkey > OPENSSL_RSA_MAX_MODULUS_BITS)
+            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);
+
+#ifndef OPENSSL_NO_DSA
+        if (pkey_type == EVP_PKEY_DSA && newkey > 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);
+#endif
+
+        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 %s private key\n", 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 || addext_conf != 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 (days == 0) {
+                /* set default days if it's not specified */
+                days = 30;
+            }
+            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 (addext_conf != NULL
+                && !X509V3_EXT_add_nconf(addext_conf, &ext_ctx, "default",
+                                         x509ss)) {
+                BIO_printf(bio_err, "Error Loading command line extensions\n");
+                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;
+            }
+            if (addext_conf != NULL
+                && !X509V3_EXT_REQ_add_nconf(addext_conf, &ext_ctx, "default",
+                                             req)) {
+                BIO_printf(bio_err, "Error Loading command line extensions\n");
+                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)
+            ret = X509_print_ex(out, x509ss, get_nameopt(), reqflag);
+        else
+            ret = X509_REQ_print_ex(out, req, get_nameopt(), reqflag);
+
+        if (ret == 0) {
+            if (x509)
+              BIO_printf(bio_err, "Error printing certificate\n");
+            else
+              BIO_printf(bio_err, "Error printing certificate request\n");
+
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+    }
+
+    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);
+    NCONF_free(addext_conf);
+    BIO_free(addext_bio);
+    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);
+    lh_OPENSSL_STRING_doall(addexts, exts_cleanup);
+    lh_OPENSSL_STRING_free(addexts);
+#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 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");
+        ERR_print_errors(bio_err);
+        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, "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;
+    }
+    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 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, def_nid;
+
+    if (ctx == NULL)
+        return 0;
+    /*
+     * EVP_PKEY_get_default_digest_nid() returns 2 if the digest is mandatory
+     * for this algorithm.
+     */
+    if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) == 2
+            && def_nid == NID_undef) {
+        /* The signing algorithm requires there to be no digest */
+        md = NULL;
+    }
+    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;
+}