+
+static EVP_PKEY_CTX *set_keygen_ctx(BIO *err, 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))
+ paramfile = gstr + 6;
+ else
+ {
+ const char *p = strchr(gstr, ':');
+ int len;
+ ENGINE *tmpeng;
+ const EVP_PKEY_ASN1_METHOD *ameth;
+
+ if (p)
+ 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)
+ {
+ BIO_printf(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
+ if (tmpeng)
+ ENGINE_finish(tmpeng);
+#endif
+ if (*pkey_type == EVP_PKEY_RSA)
+ {
+ if (p)
+ {
+ keylen = atol(p + 1);
+ *pkeylen = keylen;
+ }
+ }
+ else if (p)
+ paramfile = p + 1;
+ }
+
+ if (paramfile)
+ {
+ pbio = BIO_new_file(paramfile, "r");
+ if (!pbio)
+ {
+ BIO_printf(err, "Can't open parameter file %s\n",
+ paramfile);
+ return NULL;
+ }
+ param = PEM_read_bio_Parameters(pbio, NULL);
+
+ if (!param)
+ {
+ X509 *x;
+ (void)BIO_reset(pbio);
+ x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
+ if (x)
+ {
+ param = X509_get_pubkey(x);
+ X509_free(x);
+ }
+ }
+
+ BIO_free(pbio);
+
+ if (!param)
+ {
+ BIO_printf(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(err, "Key Type does not match parameters\n");
+ EVP_PKEY_free(param);
+ return NULL;
+ }
+ }
+
+ if (palgnam)
+ {
+ const EVP_PKEY_ASN1_METHOD *ameth;
+ ENGINE *tmpeng;
+ const char *anam;
+ ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type);
+ if (!ameth)
+ {
+ BIO_puts(err, "Internal error: can't find key algorithm\n");
+ return NULL;
+ }
+ EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &anam, ameth);
+ *palgnam = BUF_strdup(anam);
+#ifndef OPENSSL_NO_ENGINE
+ if (tmpeng)
+ ENGINE_finish(tmpeng);
+#endif
+ }
+
+ if (param)
+ {
+ 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)
+ {
+ BIO_puts(err, "Error allocating keygen context\n");
+ ERR_print_errors(err);
+ return NULL;
+ }
+
+ if (EVP_PKEY_keygen_init(gctx) <= 0)
+ {
+ BIO_puts(err, "Error initializing keygen context\n");
+ ERR_print_errors(err);
+ 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(err, "Error setting RSA keysize\n");
+ ERR_print_errors(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);
+#ifdef LINT
+ p=n;
+#endif
+ return 1;
+ }
+
+static int do_sign_init(BIO *err, EVP_MD_CTX *ctx, EVP_PKEY *pkey,
+ const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts)
+ {
+ EVP_PKEY_CTX *pkctx = NULL;
+ int i;
+ EVP_MD_CTX_init(ctx);
+ 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(err, "parameter error \"%s\"\n", sigopt);
+ ERR_print_errors(bio_err);
+ return 0;
+ }
+ }
+ return 1;
+ }
+
+int do_X509_sign(BIO *err, X509 *x, EVP_PKEY *pkey, const EVP_MD *md,
+ STACK_OF(OPENSSL_STRING) *sigopts)
+ {
+ int rv;
+ EVP_MD_CTX mctx;
+ EVP_MD_CTX_init(&mctx);
+ rv = do_sign_init(err, &mctx, pkey, md, sigopts);
+ if (rv > 0)
+ rv = X509_sign_ctx(x, &mctx);
+ EVP_MD_CTX_cleanup(&mctx);
+ return rv > 0 ? 1 : 0;
+ }
+
+
+int do_X509_REQ_sign(BIO *err, X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md,
+ STACK_OF(OPENSSL_STRING) *sigopts)
+ {
+ int rv;
+ EVP_MD_CTX mctx;
+ EVP_MD_CTX_init(&mctx);
+ rv = do_sign_init(err, &mctx, pkey, md, sigopts);
+ if (rv > 0)
+ rv = X509_REQ_sign_ctx(x, &mctx);
+ EVP_MD_CTX_cleanup(&mctx);
+ return rv > 0 ? 1 : 0;
+ }
+
+
+
+int do_X509_CRL_sign(BIO *err, X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md,
+ STACK_OF(OPENSSL_STRING) *sigopts)
+ {
+ int rv;
+ EVP_MD_CTX mctx;
+ EVP_MD_CTX_init(&mctx);
+ rv = do_sign_init(err, &mctx, pkey, md, sigopts);
+ if (rv > 0)
+ rv = X509_CRL_sign_ctx(x, &mctx);
+ EVP_MD_CTX_cleanup(&mctx);
+ return rv > 0 ? 1 : 0;
+ }
+
+