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-rw-r--r--LIBTLS_VERSION2
-rw-r--r--Makefile.am1
-rw-r--r--README.78
-rw-r--r--VERSION2
-rw-r--r--compat/arc4random.c4
-rw-r--r--compat/chacha_private.h4
-rw-r--r--compat/getentropy_aix.c4
-rw-r--r--compat/getentropy_hpux.c4
-rw-r--r--compat/getentropy_linux.c4
-rw-r--r--compat/getentropy_osx.c4
-rw-r--r--compat/getentropy_solaris.c4
-rw-r--r--configure.ac3
-rw-r--r--include/compat/netinet/ip.h2
-rw-r--r--include/compat/sys/socket.h1
-rw-r--r--include/tls.h2
-rw-r--r--m4/check-hardening-options.m426
-rw-r--r--m4/check-libc.m410
-rw-r--r--m4/check-os-options.m415
-rw-r--r--man/tls_load_file.36
-rw-r--r--tls.c27
-rw-r--r--tls_bio_cb.c44
-rw-r--r--tls_client.c9
-rw-r--r--tls_config.c15
-rw-r--r--tls_internal.h29
-rw-r--r--tls_ocsp.c39
-rw-r--r--tls_server.c30
-rw-r--r--tls_signer.c447
27 files changed, 641 insertions, 105 deletions
diff --git a/LIBTLS_VERSION b/LIBTLS_VERSION
index 2005c06..4afa027 100644
--- a/LIBTLS_VERSION
+++ b/LIBTLS_VERSION
@@ -1 +1 @@
-22:0:0
+25:0:0
diff --git a/Makefile.am b/Makefile.am
index eb913b0..69a8133 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -29,6 +29,7 @@ libtls_la_SOURCES += tls_config.c
 libtls_la_SOURCES += tls_conninfo.c
 libtls_la_SOURCES += tls_keypair.c
 libtls_la_SOURCES += tls_server.c
+libtls_la_SOURCES += tls_signer.c
 libtls_la_SOURCES += tls_ocsp.c
 libtls_la_SOURCES += tls_peer.c
 libtls_la_SOURCES += tls_util.c
diff --git a/README.7 b/README.7
index 387a449..4ef36f8 100644
--- a/README.7
+++ b/README.7
@@ -1,4 +1,4 @@
-.Dd August  3, 2020
+.Dd February 27, 2022
 .Dt README 7
 .Os "Causal Agency"
 .\" To view this file, run: man ./README.7
@@ -83,6 +83,10 @@ targets the OpenSSL 1.1.1 series.
 Due to a bug in OpenSSL,
 only versions 1.1.1b and newer
 are known to work.
+.Nm
+is compatible with OpenSSL 3.0.0
+but hasn't been ported
+away from deprecated APIs.
 .
 .Ss Platform Support
 .Nm
@@ -147,7 +151,7 @@ autoreconf -fi
 .Sh AUTHORS
 .Nm
 is maintained by
-.An June Bug Aq Mt june@causal.agency .
+.An June McEnroe Aq Mt june@causal.agency .
 .Pp
 LibreSSL is developed by
 .Lk https://www.openbsd.org "The OpenBSD project" .
diff --git a/VERSION b/VERSION
index ec46c1f..8b7c8d3 100644
--- a/VERSION
+++ b/VERSION
@@ -1,2 +1,2 @@
-3.4.2
+3.5.2
 
diff --git a/compat/arc4random.c b/compat/arc4random.c
index 2bb4dbf..6f95d57 100644
--- a/compat/arc4random.c
+++ b/compat/arc4random.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random.c,v 1.55 2019/03/24 17:56:54 deraadt Exp $	*/
+/*	$OpenBSD: arc4random.c,v 1.56 2022/02/28 21:56:29 dtucker Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -78,7 +78,7 @@ _rs_init(u_char *buf, size_t n)
 			_exit(1);
 	}
 
-	chacha_keysetup(&rsx->rs_chacha, buf, KEYSZ * 8, 0);
+	chacha_keysetup(&rsx->rs_chacha, buf, KEYSZ * 8);
 	chacha_ivsetup(&rsx->rs_chacha, buf + KEYSZ);
 }
 
diff --git a/compat/chacha_private.h b/compat/chacha_private.h
index 7c3680f..b0427b6 100644
--- a/compat/chacha_private.h
+++ b/compat/chacha_private.h
@@ -4,7 +4,7 @@ D. J. Bernstein
 Public domain.
 */
 
-/* $OpenBSD: chacha_private.h,v 1.2 2013/10/04 07:02:27 djm Exp $ */
+/* $OpenBSD: chacha_private.h,v 1.3 2022/02/28 21:56:29 dtucker Exp $ */
 
 typedef unsigned char u8;
 typedef unsigned int u32;
@@ -52,7 +52,7 @@ static const char sigma[16] = "expand 32-byte k";
 static const char tau[16] = "expand 16-byte k";
 
 static void
-chacha_keysetup(chacha_ctx *x,const u8 *k,u32 kbits,u32 ivbits)
+chacha_keysetup(chacha_ctx *x,const u8 *k,u32 kbits)
 {
   const char *constants;
 
diff --git a/compat/getentropy_aix.c b/compat/getentropy_aix.c
index 422e685..7fb857e 100644
--- a/compat/getentropy_aix.c
+++ b/compat/getentropy_aix.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getentropy_aix.c,v 1.7 2020/05/17 14:44:20 deraadt Exp $	*/
+/*	$OpenBSD: getentropy_aix.c,v 1.8 2021/10/24 21:24:20 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2015 Michael Felt <aixtools@gmail.com>
@@ -134,7 +134,7 @@ start:
 #ifdef O_CLOEXEC
 	flags |= O_CLOEXEC;
 #endif
-	fd = open(path, flags, 0);
+	fd = open(path, flags);
 	if (fd == -1) {
 		if (errno == EINTR)
 			goto start;
diff --git a/compat/getentropy_hpux.c b/compat/getentropy_hpux.c
index c981880..7188ae5 100644
--- a/compat/getentropy_hpux.c
+++ b/compat/getentropy_hpux.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getentropy_hpux.c,v 1.7 2020/05/17 14:44:20 deraadt Exp $	*/
+/*	$OpenBSD: getentropy_hpux.c,v 1.8 2021/10/24 21:24:20 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2014 Theo de Raadt <deraadt@openbsd.org>
@@ -138,7 +138,7 @@ start:
 #ifdef O_CLOEXEC
 	flags |= O_CLOEXEC;
 #endif
-	fd = open(path, flags, 0);
+	fd = open(path, flags);
 	if (fd == -1) {
 		if (errno == EINTR)
 			goto start;
diff --git a/compat/getentropy_linux.c b/compat/getentropy_linux.c
index bc7a6be..c7c39c2 100644
--- a/compat/getentropy_linux.c
+++ b/compat/getentropy_linux.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getentropy_linux.c,v 1.47 2020/05/17 14:44:20 deraadt Exp $	*/
+/*	$OpenBSD: getentropy_linux.c,v 1.48 2021/10/24 21:24:20 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2014 Theo de Raadt <deraadt@openbsd.org>
@@ -212,7 +212,7 @@ start:
 #ifdef O_CLOEXEC
 	flags |= O_CLOEXEC;
 #endif
-	fd = open("/dev/urandom", flags, 0);
+	fd = open("/dev/urandom", flags);
 	if (fd == -1) {
 		if (errno == EINTR)
 			goto start;
diff --git a/compat/getentropy_osx.c b/compat/getentropy_osx.c
index 5d4067b..db028d1 100644
--- a/compat/getentropy_osx.c
+++ b/compat/getentropy_osx.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getentropy_osx.c,v 1.13 2020/05/17 14:44:20 deraadt Exp $	*/
+/*	$OpenBSD: getentropy_osx.c,v 1.14 2021/10/24 21:24:20 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2014 Theo de Raadt <deraadt@openbsd.org>
@@ -158,7 +158,7 @@ start:
 #ifdef O_CLOEXEC
 	flags |= O_CLOEXEC;
 #endif
-	fd = open("/dev/urandom", flags, 0);
+	fd = open("/dev/urandom", flags);
 	if (fd == -1) {
 		if (errno == EINTR)
 			goto start;
diff --git a/compat/getentropy_solaris.c b/compat/getentropy_solaris.c
index cf5b9bf..e36426c 100644
--- a/compat/getentropy_solaris.c
+++ b/compat/getentropy_solaris.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getentropy_solaris.c,v 1.14 2020/05/17 14:44:20 deraadt Exp $	*/
+/*	$OpenBSD: getentropy_solaris.c,v 1.15 2021/10/24 21:24:20 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2014 Theo de Raadt <deraadt@openbsd.org>
@@ -164,7 +164,7 @@ start:
 #ifdef O_CLOEXEC
 	flags |= O_CLOEXEC;
 #endif
-	fd = open(path, flags, 0);
+	fd = open(path, flags);
 	if (fd == -1) {
 		if (errno == EINTR)
 			goto start;
diff --git a/configure.ac b/configure.ac
index 150a6d6..ce20270 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,7 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-AC_INIT([libretls], m4_esyscmd([tr -d '\n' < VERSION]))
+AC_INIT([libretls], m4_esyscmd(tr -d '\n' < VERSION))
 AC_SUBST([LIBTLS_VERSION], m4_esyscmd([tr -d '\n' < LIBTLS_VERSION]))
 
 AC_CANONICAL_HOST
@@ -25,7 +25,6 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 USER_CFLAGS="$CFLAGS"
 
 AC_PROG_CC([cc gcc])
-AC_PROG_CC_STDC
 AM_PROG_CC_C_O
 LT_INIT([pic-only])
 
diff --git a/include/compat/netinet/ip.h b/include/compat/netinet/ip.h
index 6019f7d..29f17f3 100644
--- a/include/compat/netinet/ip.h
+++ b/include/compat/netinet/ip.h
@@ -8,7 +8,9 @@
 #endif
 
 #ifndef _WIN32
+#ifdef HAVE_NETINET_IP_H
 #include_next <netinet/ip.h>
+#endif
 #else
 #include <win32netcompat.h>
 #endif
diff --git a/include/compat/sys/socket.h b/include/compat/sys/socket.h
index 10eb05f..2f0b197 100644
--- a/include/compat/sys/socket.h
+++ b/include/compat/sys/socket.h
@@ -10,6 +10,7 @@
 #endif
 
 #if !defined(SOCK_NONBLOCK) || !defined(SOCK_CLOEXEC)
+#define NEED_SOCKET_FLAGS
 #define SOCK_CLOEXEC            0x8000  /* set FD_CLOEXEC */
 #define SOCK_NONBLOCK           0x4000  /* set O_NONBLOCK */
 int bsd_socketpair(int domain, int type, int protocol, int socket_vector[2]);
diff --git a/include/tls.h b/include/tls.h
index de6d257..0c9e497 100644
--- a/include/tls.h
+++ b/include/tls.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls.h,v 1.58 2020/01/22 06:44:02 beck Exp $ */
+/* $OpenBSD: tls.h,v 1.62 2022/03/24 15:56:34 tb Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
diff --git a/m4/check-hardening-options.m4 b/m4/check-hardening-options.m4
index c8ab12e..4b5784b 100644
--- a/m4/check-hardening-options.m4
+++ b/m4/check-hardening-options.m4
@@ -4,16 +4,13 @@ AC_DEFUN([CHECK_CFLAG], [
 	 AC_MSG_CHECKING([if $saved_CC supports "$1"])
 	 old_cflags="$CFLAGS"
 	 CFLAGS="$1 -Wall -Werror"
-	 AC_TRY_LINK([
-		      #include <stdio.h>
-		      ],
-		     [printf("Hello")],
-		     AC_MSG_RESULT([yes])
+	 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]], [[printf("Hello")]])],
+		     [AC_MSG_RESULT([yes])
 		     CFLAGS=$old_cflags
-		     HARDEN_CFLAGS="$HARDEN_CFLAGS $1",
-		     AC_MSG_RESULT([no])
+		     HARDEN_CFLAGS="$HARDEN_CFLAGS $1"],
+		     [AC_MSG_RESULT([no])
 		     CFLAGS=$old_cflags
-		     [$2])
+		     [$2]])
 ])
 
 AC_DEFUN([CHECK_LDFLAG], [
@@ -21,16 +18,13 @@ AC_DEFUN([CHECK_LDFLAG], [
 	 AC_MSG_CHECKING([if $saved_LD supports "$1"])
 	 old_ldflags="$LDFLAGS"
 	 LDFLAGS="$1 -Wall -Werror"
-	 AC_TRY_LINK([
-		      #include <stdio.h>
-		      ],
-		     [printf("Hello")],
-		     AC_MSG_RESULT([yes])
+	 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]], [[printf("Hello")]])],
+		     [AC_MSG_RESULT([yes])
 		     LDFLAGS=$old_ldflags
-		     HARDEN_LDFLAGS="$HARDEN_LDFLAGS $1",
-		     AC_MSG_RESULT([no])
+		     HARDEN_LDFLAGS="$HARDEN_LDFLAGS $1"],
+		     [AC_MSG_RESULT([no])
 		     LDFLAGS=$old_ldflags
-		     [$2])
+		     [$2]])
 ])
 
 AC_DEFUN([DISABLE_AS_EXECUTABLE_STACK], [
diff --git a/m4/check-libc.m4 b/m4/check-libc.m4
index 2ca08a5..b33224f 100644
--- a/m4/check-libc.m4
+++ b/m4/check-libc.m4
@@ -1,4 +1,9 @@
 AC_DEFUN([CHECK_LIBC_COMPAT], [
+# Check for libc headers
+AC_CHECK_HEADERS([netinet/ip.h], [], [],
+[#include <sys/types.h>
+#include <arpa/inet.h>
+])
 # Check for general libc functions
 AC_CHECK_FUNCS([asprintf freezero memmem])
 AC_CHECK_FUNCS([reallocarray recallocarray])
@@ -7,10 +12,7 @@ AC_CHECK_FUNCS([timegm _mkgmtime timespecsub])
 AC_CHECK_FUNCS([getprogname])
 AC_CACHE_CHECK([for getpagesize], ac_cv_func_getpagesize, [
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
-// Since Android NDK v16 getpagesize is defined as inline inside unistd.h
-#ifdef __ANDROID__
-#	include <unistd.h>
-#endif
+#include <unistd.h>
 		]], [[
 	getpagesize();
 ]])],
diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4
index 644bf71..bd38938 100644
--- a/m4/check-os-options.m4
+++ b/m4/check-os-options.m4
@@ -68,10 +68,15 @@ char buf[1]; getentropy(buf, 1);
 		;;
 	*hpux*)
 		HOST_OS=hpux;
-		if test "`echo $CC | cut -d ' ' -f 1`" = "gcc" ; then
-			CFLAGS="$CFLAGS -mlp64"
-		else
-			CFLAGS="-g -O2 +DD64 +Otype_safety=off $USER_CFLAGS"
+		if test "`echo $host_os | cut -c 1-4`" = "ia64" ; then
+			if test "`echo $CC | cut -d ' ' -f 1`" = "gcc" ; then
+				CFLAGS="$CFLAGS -mlp64"
+			else
+				CFLAGS="+DD64"
+			fi
+		fi
+		if ! test "`echo $CC | cut -d ' ' -f 1`" = "gcc" ; then
+			CFLAGS="-g -O2 +Otype_safety=off $CFLAGS $USER_CFLAGS"
 		fi
 		CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D__STRICT_ALIGNMENT"
 		;;
@@ -118,7 +123,7 @@ char buf[1]; getentropy(buf, 1);
 		HOST_OS=solaris
 		HOST_ABI=elf
 		CPPFLAGS="$CPPFLAGS -D__EXTENSIONS__ -D_XOPEN_SOURCE=600 -DBSD_COMP"
-		AC_SUBST([PLATFORM_LDADD], ['-ldl -lnsl -lsocket'])
+		AC_SUBST([PLATFORM_LDADD], ['-ldl -lmd -lnsl -lsocket'])
 		;;
 	*) ;;
 esac
diff --git a/man/tls_load_file.3 b/man/tls_load_file.3
index 6f82759..cf33b57 100644
--- a/man/tls_load_file.3
+++ b/man/tls_load_file.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: tls_load_file.3,v 1.13 2021/06/22 20:01:19 jmc Exp $
+.\" $OpenBSD: tls_load_file.3,v 1.14 2022/01/01 02:18:28 jsg Exp $
 .\"
 .\" Copyright (c) 2014 Ted Unangst <tedu@openbsd.org>
 .\" Copyright (c) 2015 Reyk Floeter <reyk@openbsd.org>
@@ -17,7 +17,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 22 2021 $
+.Dd $Mdocdate: January 1 2022 $
 .Dt TLS_LOAD_FILE 3
 .Os
 .Sh NAME
@@ -357,7 +357,7 @@ appeared in
 .Ox 6.2 .
 .Sh AUTHORS
 .An Joel Sing Aq Mt jsing@openbsd.org
-with contibutions from
+with contributions from
 .An Ted Unangst Aq Mt tedu@openbsd.org
 and
 .An Bob Beck Aq Mt beck@openbsd.org .
diff --git a/tls.c b/tls.c
index 7b612b8..6883c58 100644
--- a/tls.c
+++ b/tls.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls.c,v 1.89 2021/02/01 15:35:41 tb Exp $ */
+/* $OpenBSD: tls.c,v 1.94 2022/02/08 19:13:50 tb Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
@@ -448,6 +448,8 @@ tls_keypair_to_pkey(struct tls *ctx, struct tls_keypair *keypair, EVP_PKEY **pke
 static int
 tls_keypair_setup_pkey(struct tls *ctx, struct tls_keypair *keypair, EVP_PKEY *pkey)
 {
+	RSA_METHOD *rsa_method;
+	EC_KEY_METHOD *ecdsa_method;
 	RSA *rsa = NULL;
 	EC_KEY *eckey = NULL;
 	int ret = -1;
@@ -468,6 +470,14 @@ tls_keypair_setup_pkey(struct tls *ctx, struct tls_keypair *keypair, EVP_PKEY *p
 			tls_set_errorx(ctx, "RSA key setup failure");
 			goto err;
 		}
+		if (ctx->config->sign_cb == NULL)
+			break;
+		if ((rsa_method = tls_signer_rsa_method()) == NULL ||
+		    RSA_set_ex_data(rsa, 1, ctx->config) == 0 ||
+		    RSA_set_method(rsa, rsa_method) == 0) {
+			tls_set_errorx(ctx, "failed to setup RSA key");
+			goto err;
+		}
 		break;
 	case EVP_PKEY_EC:
 		if ((eckey = EVP_PKEY_get1_EC_KEY(pkey)) == NULL ||
@@ -475,6 +485,14 @@ tls_keypair_setup_pkey(struct tls *ctx, struct tls_keypair *keypair, EVP_PKEY *p
 			tls_set_errorx(ctx, "EC key setup failure");
 			goto err;
 		}
+		if (ctx->config->sign_cb == NULL)
+			break;
+		if ((ecdsa_method = tls_signer_ecdsa_method()) == NULL ||
+		    EC_KEY_set_ex_data(eckey, 1, ctx->config) == 0 ||
+		    EC_KEY_set_method(eckey, ecdsa_method) == 0) {
+			tls_set_errorx(ctx, "failed to setup EC key");
+			goto err;
+		}
 		break;
 	default:
 		tls_set_errorx(ctx, "incorrect key type");
@@ -582,7 +600,7 @@ tls_configure_ssl(struct tls *ctx, SSL_CTX *ssl_ctx)
 	}
 
 	if (ctx->config->verify_time == 0) {
-		X509_VERIFY_PARAM_set_flags(ssl_ctx->param,
+		X509_VERIFY_PARAM_set_flags(SSL_CTX_get0_param(ssl_ctx),
 		    X509_V_FLAG_NO_CHECK_TIME);
 	}
 
@@ -731,9 +749,8 @@ tls_configure_ssl_verify(struct tls *ctx, SSL_CTX *ssl_ctx, int verify)
 				tls_set_error(ctx, "failed to add crl");
 				goto err;
 			}
-			xi->crl = NULL;
 		}
-		X509_VERIFY_PARAM_set_flags(X509_STORE_get0_param(store),
+		X509_STORE_set_flags(store,
 		    X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
 	}
 
@@ -849,7 +866,7 @@ tls_ssl_error(struct tls *ctx, SSL *ssl_conn, int ssl_ret, const char *prefix)
 	case SSL_ERROR_WANT_ACCEPT:
 	case SSL_ERROR_WANT_X509_LOOKUP:
 	default:
-		tls_set_ssl_errorx(ctx, "%s failed (%i)", prefix, ssl_err);
+		tls_set_ssl_errorx(ctx, "%s failed (%d)", prefix, ssl_err);
 		return (-1);
 	}
 }
diff --git a/tls_bio_cb.c b/tls_bio_cb.c
index 8adbf55..9dd435a 100644
--- a/tls_bio_cb.c
+++ b/tls_bio_cb.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls_bio_cb.c,v 1.19 2017/01/12 16:18:39 jsing Exp $ */
+/* $OpenBSD: tls_bio_cb.c,v 1.20 2022/01/10 23:39:48 tb Exp $ */
 /*
  * Copyright (c) 2016 Tobias Pape <tobias@netshed.de>
  *
@@ -32,26 +32,39 @@ static long bio_cb_ctrl(BIO *bio, int cmd, long num, void *ptr);
 
 static BIO_METHOD *bio_cb_method;
 
-static pthread_once_t bio_cb_init_once = PTHREAD_ONCE_INIT;
+static pthread_mutex_t bio_cb_method_lock = PTHREAD_MUTEX_INITIALIZER;
 
 static void
-bio_s_cb_init(void)
+bio_cb_method_init(void)
 {
-	bio_cb_method = BIO_meth_new(BIO_TYPE_MEM, "libtls_callbacks");
-	if (bio_cb_method == NULL)
+	BIO_METHOD *bio_method;
+
+	if (bio_cb_method != NULL)
+		return;
+
+	bio_method = BIO_meth_new(BIO_TYPE_MEM, "libtls_callbacks");
+	if (bio_method == NULL)
 		return;
 
-	BIO_meth_set_write(bio_cb_method, bio_cb_write);
-	BIO_meth_set_read(bio_cb_method, bio_cb_read);
-	BIO_meth_set_puts(bio_cb_method, bio_cb_puts);
-	BIO_meth_set_ctrl(bio_cb_method, bio_cb_ctrl);
+	BIO_meth_set_write(bio_method, bio_cb_write);
+	BIO_meth_set_read(bio_method, bio_cb_read);
+	BIO_meth_set_puts(bio_method, bio_cb_puts);
+	BIO_meth_set_ctrl(bio_method, bio_cb_ctrl);
+
+	bio_cb_method = bio_method;
 }
 
 static BIO_METHOD *
 bio_s_cb(void)
 {
-	pthread_once(&bio_cb_init_once, bio_s_cb_init);
-	return bio_cb_method;
+	if (bio_cb_method != NULL)
+		return (bio_cb_method);
+
+	pthread_mutex_lock(&bio_cb_method_lock);
+	bio_cb_method_init();
+	pthread_mutex_unlock(&bio_cb_method_lock);
+
+	return (bio_cb_method);
 }
 
 static int
@@ -125,8 +138,9 @@ int
 tls_set_cbs(struct tls *ctx, tls_read_cb read_cb, tls_write_cb write_cb,
     void *cb_arg)
 {
-	int rv = -1;
+	const BIO_METHOD *bio_cb;
 	BIO *bio;
+	int rv = -1;
 
 	if (read_cb == NULL || write_cb == NULL) {
 		tls_set_errorx(ctx, "no callbacks provided");
@@ -137,7 +151,11 @@ tls_set_cbs(struct tls *ctx, tls_read_cb read_cb, tls_write_cb write_cb,
 	ctx->write_cb = write_cb;
 	ctx->cb_arg = cb_arg;
 
-	if ((bio = BIO_new(bio_s_cb())) == NULL) {
+	if ((bio_cb = bio_s_cb()) == NULL) {
+		tls_set_errorx(ctx, "failed to create callback method");
+		goto err;
+	}
+	if ((bio = BIO_new(bio_cb)) == NULL) {
 		tls_set_errorx(ctx, "failed to create callback i/o");
 		goto err;
 	}
diff --git a/tls_client.c b/tls_client.c
index 47ebc40..b1d2a44 100644
--- a/tls_client.c
+++ b/tls_client.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls_client.c,v 1.47 2021/06/01 20:26:11 tb Exp $ */
+/* $OpenBSD: tls_client.c,v 1.48 2021/10/21 08:38:11 tb Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
@@ -75,11 +75,8 @@ tls_connect_servername(struct tls *ctx, const char *host, const char *port,
 		goto err;
 	}
 
-	/*
-	 * If port is NULL try to extract a port from the specified host,
-	 * otherwise use the default.
-	 */
-	if ((p = (char *)port) == NULL) {
+	/* If port is NULL, try to extract a port from the specified host. */
+	if (port == NULL) {
 		ret = tls_host_port(host, &hs, &ps);
 		if (ret == -1) {
 			tls_set_errorx(ctx, "memory allocation failure");
diff --git a/tls_config.c b/tls_config.c
index 3b1f4ff..38ed1bb 100644
--- a/tls_config.c
+++ b/tls_config.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls_config.c,v 1.63 2021/01/21 22:03:25 eric Exp $ */
+/* $OpenBSD: tls_config.c,v 1.65 2022/01/25 21:51:24 eric Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
@@ -723,7 +723,7 @@ tls_config_set_session_fd(struct tls_config *config, int session_fd)
 
 	if (sb.st_uid != getuid()) {
 		tls_config_set_errorx(config, "session file has incorrect "
-		    "owner (uid %i != %i)", sb.st_uid, getuid());
+		    "owner (uid %u != %u)", sb.st_uid, getuid());
 		return (-1);
 	}
 	mugo = sb.st_mode & (S_IRWXU|S_IRWXG|S_IRWXO);
@@ -739,6 +739,17 @@ tls_config_set_session_fd(struct tls_config *config, int session_fd)
 }
 
 int
+tls_config_set_sign_cb(struct tls_config *config, tls_sign_cb cb, void *cb_arg)
+{
+	config->use_fake_private_key = 1;
+	config->skip_private_key_check = 1;
+	config->sign_cb = cb;
+	config->sign_cb_arg = cb_arg;
+
+	return (0);
+}
+
+int
 tls_config_set_verify_depth(struct tls_config *config, int verify_depth)
 {
 	config->verify_depth = verify_depth;
diff --git a/tls_internal.h b/tls_internal.h
index 72b08f4..a0680f4 100644
--- a/tls_internal.h
+++ b/tls_internal.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls_internal.h,v 1.78 2021/01/21 19:09:10 eric Exp $ */
+/* $OpenBSD: tls_internal.h,v 1.80 2022/03/24 15:56:34 tb Exp $ */
 /*
  * Copyright (c) 2014 Jeremie Courreges-Anglas <jca@openbsd.org>
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
@@ -74,6 +74,10 @@ struct tls_ticket_key {
 	time_t		time;
 };
 
+typedef int (*tls_sign_cb)(void *_cb_arg, const char *_pubkey_hash,
+    const uint8_t *_input, size_t _input_len, int _padding_type,
+    uint8_t **_out_signature, size_t *_out_signature_len);
+
 struct tls_config {
 	struct tls_error error;
 
@@ -108,6 +112,8 @@ struct tls_config {
 	int verify_time;
 	int skip_private_key_check;
 	int use_fake_private_key;
+	tls_sign_cb sign_cb;
+	void *sign_cb_arg;
 };
 
 struct tls_conninfo {
@@ -287,6 +293,27 @@ int tls_cert_pubkey_hash(X509 *_cert, char **_hash);
 
 int tls_password_cb(char *_buf, int _size, int _rwflag, void *_u);
 
+RSA_METHOD *tls_signer_rsa_method(void);
+EC_KEY_METHOD *tls_signer_ecdsa_method(void);
+
+#define TLS_PADDING_NONE			0
+#define TLS_PADDING_RSA_PKCS1			1
+#define TLS_PADDING_RSA_X9_31			2
+
+int tls_config_set_sign_cb(struct tls_config *_config, tls_sign_cb _cb,
+    void *_cb_arg);
+
+struct tls_signer* tls_signer_new(void);
+void tls_signer_free(struct tls_signer * _signer);
+const char *tls_signer_error(struct tls_signer * _signer);
+int tls_signer_add_keypair_file(struct tls_signer *_signer,
+    const char *_cert_file, const char *_key_file);
+int tls_signer_add_keypair_mem(struct tls_signer *_signer, const uint8_t *_cert,
+    size_t _cert_len, const uint8_t *_key, size_t _key_len);
+int tls_signer_sign(struct tls_signer *_signer, const char *_pubkey_hash,
+    const uint8_t *_input, size_t _input_len, int _padding_type,
+    uint8_t **_out_signature, size_t *_out_signature_len);
+
 __END_HIDDEN_DECLS
 
 /* XXX this function is not fully hidden so relayd can use it */
diff --git a/tls_ocsp.c b/tls_ocsp.c
index 2a322c1..f1c54ab 100644
--- a/tls_ocsp.c
+++ b/tls_ocsp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tls_ocsp.c,v 1.20 2021/03/23 20:04:29 tb Exp $ */
+/*	$OpenBSD: tls_ocsp.c,v 1.22 2021/10/31 16:39:32 tb Exp $ */
 /*
  * Copyright (c) 2015 Marko Kreen <markokr@gmail.com>
  * Copyright (c) 2016 Bob Beck <beck@openbsd.org>
@@ -131,39 +131,38 @@ tls_ocsp_get_certid(X509 *main_cert, STACK_OF(X509) *extra_certs,
 	X509_NAME *issuer_name;
 	X509 *issuer;
 	X509_STORE_CTX *storectx = NULL;
-	X509_OBJECT *tmpobj = NULL;
+	X509_OBJECT *obj = NULL;
 	OCSP_CERTID *cid = NULL;
 	X509_STORE *store;
 
 	if ((issuer_name = X509_get_issuer_name(main_cert)) == NULL)
-		return NULL;
+		goto out;
 
 	if (extra_certs != NULL) {
 		issuer = X509_find_by_subject(extra_certs, issuer_name);
-		if (issuer != NULL)
-			return OCSP_cert_to_id(NULL, main_cert, issuer);
+		if (issuer != NULL) {
+			cid = OCSP_cert_to_id(NULL, main_cert, issuer);
+			goto out;
+		}
 	}
 
 	if ((store = SSL_CTX_get_cert_store(ssl_ctx)) == NULL)
-		return NULL;
+		goto out;
 	if ((storectx = X509_STORE_CTX_new()) == NULL)
-		return NULL;
+		goto out;
 	if (X509_STORE_CTX_init(storectx, store, main_cert, extra_certs) != 1)
-		goto err;
-	if ((tmpobj = X509_OBJECT_new()) == NULL)
-		goto err;
-	if (X509_STORE_get_by_subject(storectx, X509_LU_X509, issuer_name,
-		tmpobj) == 1) {
-		cid = OCSP_cert_to_id(NULL, main_cert, X509_OBJECT_get0_X509(tmpobj));
-		X509_OBJECT_free(tmpobj);
-	}
-	X509_STORE_CTX_free(storectx);
-	return cid;
+		goto out;
+	if ((obj = X509_STORE_CTX_get_obj_by_subject(storectx, X509_LU_X509,
+	    issuer_name)) == NULL)
+		goto out;
 
- err:
-	X509_OBJECT_free(tmpobj);
+	cid = OCSP_cert_to_id(NULL, main_cert, X509_OBJECT_get0_X509(obj));
+
+ out:
 	X509_STORE_CTX_free(storectx);
-	return NULL;
+	X509_OBJECT_free(obj);
+
+	return cid;
 }
 
 struct tls_ocsp *
diff --git a/tls_server.c b/tls_server.c
index 831255a..ebf76bc 100644
--- a/tls_server.c
+++ b/tls_server.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls_server.c,v 1.47 2021/06/14 03:53:59 tb Exp $ */
+/* $OpenBSD: tls_server.c,v 1.48 2022/01/19 11:10:55 inoguchi Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
@@ -186,10 +186,16 @@ tls_server_ticket_cb(SSL *ssl, unsigned char *keyname, unsigned char *iv,
 
 		memcpy(keyname, key->key_name, sizeof(key->key_name));
 		arc4random_buf(iv, EVP_MAX_IV_LENGTH);
-		EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL,
-		    key->aes_key, iv);
-		HMAC_Init_ex(hctx, key->hmac_key, sizeof(key->hmac_key),
-		    EVP_sha256(), NULL);
+		if (!EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL,
+		    key->aes_key, iv)) {
+			tls_set_errorx(tls_ctx, "failed to init encrypt");
+			return (-1);
+		}
+		if (!HMAC_Init_ex(hctx, key->hmac_key, sizeof(key->hmac_key),
+		    EVP_sha256(), NULL)) {
+			tls_set_errorx(tls_ctx, "failed to init hmac");
+			return (-1);
+		}
 		return (0);
 	} else {
 		/* get key by name */
@@ -197,10 +203,16 @@ tls_server_ticket_cb(SSL *ssl, unsigned char *keyname, unsigned char *iv,
 		if (key == NULL)
 			return (0);
 
-		EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL,
-		    key->aes_key, iv);
-		HMAC_Init_ex(hctx, key->hmac_key, sizeof(key->hmac_key),
-		    EVP_sha256(), NULL);
+		if (!EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL,
+		    key->aes_key, iv)) {
+			tls_set_errorx(tls_ctx, "failed to init decrypt");
+			return (-1);
+		}
+		if (!HMAC_Init_ex(hctx, key->hmac_key, sizeof(key->hmac_key),
+		    EVP_sha256(), NULL)) {
+			tls_set_errorx(tls_ctx, "failed to init hmac");
+			return (-1);
+		}
 
 		/* time to renew the ticket? is it the primary key? */
 		if (key != &tls_ctx->config->ticket_keys[0])
diff --git a/tls_signer.c b/tls_signer.c
new file mode 100644
index 0000000..9311cfe
--- /dev/null
+++ b/tls_signer.c
@@ -0,0 +1,447 @@
+/* $OpenBSD: tls_signer.c,v 1.4 2022/02/01 17:18:38 jsing Exp $ */
+/*
+ * Copyright (c) 2021 Eric Faurot <eric@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/ecdsa.h>
+#include <openssl/err.h>
+#include <openssl/rsa.h>
+
+#include "tls.h"
+#include "tls_internal.h"
+
+struct tls_signer_key {
+	char *hash;
+	RSA *rsa;
+	EC_KEY *ecdsa;
+	struct tls_signer_key *next;
+};
+
+struct tls_signer {
+	struct tls_error error;
+	struct tls_signer_key *keys;
+};
+
+static pthread_mutex_t signer_method_lock = PTHREAD_MUTEX_INITIALIZER;
+
+struct tls_signer *
+tls_signer_new(void)
+{
+	struct tls_signer *signer;
+
+	if ((signer = calloc(1, sizeof(*signer))) == NULL)
+		return (NULL);
+
+	return (signer);
+}
+
+void
+tls_signer_free(struct tls_signer *signer)
+{
+	struct tls_signer_key *skey;
+
+	if (signer == NULL)
+		return;
+
+	tls_error_clear(&signer->error);
+
+	while (signer->keys) {
+		skey = signer->keys;
+		signer->keys = skey->next;
+		RSA_free(skey->rsa);
+		EC_KEY_free(skey->ecdsa);
+		free(skey->hash);
+		free(skey);
+	}
+
+	free(signer);
+}
+
+const char *
+tls_signer_error(struct tls_signer *signer)
+{
+	return (signer->error.msg);
+}
+
+int
+tls_signer_add_keypair_mem(struct tls_signer *signer, const uint8_t *cert,
+    size_t cert_len, const uint8_t *key, size_t key_len)
+{
+	struct tls_signer_key *skey = NULL;
+	char *errstr = "unknown";
+	int ssl_err;
+	EVP_PKEY *pkey = NULL;
+	X509 *x509 = NULL;
+	BIO *bio = NULL;
+	char *hash = NULL;
+
+	/* Compute certificate hash */
+	if ((bio = BIO_new_mem_buf(cert, cert_len)) == NULL) {
+		tls_error_setx(&signer->error,
+		    "failed to create certificate bio");
+		goto err;
+	}
+	if ((x509 = PEM_read_bio_X509(bio, NULL, tls_password_cb,
+	    NULL)) == NULL) {
+		if ((ssl_err = ERR_peek_error()) != 0)
+			errstr = ERR_error_string(ssl_err, NULL);
+		tls_error_setx(&signer->error, "failed to load certificate: %s",
+		    errstr);
+		goto err;
+	}
+	if (tls_cert_pubkey_hash(x509, &hash) == -1) {
+		tls_error_setx(&signer->error,
+		    "failed to get certificate hash");
+		goto err;
+	}
+
+	X509_free(x509);
+	x509 = NULL;
+	BIO_free(bio);
+	bio = NULL;
+
+	/* Read private key */
+	if ((bio = BIO_new_mem_buf(key, key_len)) == NULL) {
+		tls_error_setx(&signer->error, "failed to create key bio");
+		goto err;
+	}
+	if ((pkey = PEM_read_bio_PrivateKey(bio, NULL, tls_password_cb,
+	    NULL)) == NULL) {
+		tls_error_setx(&signer->error, "failed to read private key");
+		goto err;
+	}
+
+	if ((skey = calloc(1, sizeof(*skey))) == NULL) {
+		tls_error_set(&signer->error, "failed to create key entry");
+		goto err;
+	}
+	skey->hash = hash;
+	if ((skey->rsa = EVP_PKEY_get1_RSA(pkey)) == NULL &&
+	    (skey->ecdsa = EVP_PKEY_get1_EC_KEY(pkey)) == NULL) {
+		tls_error_setx(&signer->error, "unknown key type");
+		goto err;
+	}
+
+	skey->next = signer->keys;
+	signer->keys = skey;
+	EVP_PKEY_free(pkey);
+	BIO_free(bio);
+
+	return (0);
+
+ err:
+	EVP_PKEY_free(pkey);
+	X509_free(x509);
+	BIO_free(bio);
+	free(hash);
+	free(skey);
+
+	return (-1);
+}
+
+int
+tls_signer_add_keypair_file(struct tls_signer *signer, const char *cert_file,
+    const char *key_file)
+{
+	char *cert = NULL, *key = NULL;
+	size_t cert_len, key_len;
+	int rv = -1;
+
+	if (tls_config_load_file(&signer->error, "certificate", cert_file,
+	    &cert, &cert_len) == -1)
+		goto err;
+
+	if (tls_config_load_file(&signer->error, "key", key_file, &key,
+	    &key_len) == -1)
+		goto err;
+
+	rv = tls_signer_add_keypair_mem(signer, cert, cert_len, key, key_len);
+
+ err:
+	free(cert);
+	free(key);
+
+	return (rv);
+}
+
+static int
+tls_sign_rsa(struct tls_signer *signer, struct tls_signer_key *skey,
+    const uint8_t *input, size_t input_len, int padding_type,
+    uint8_t **out_signature, size_t *out_signature_len)
+{
+	int rsa_padding, rsa_size, signature_len;
+	char *signature = NULL;
+
+	*out_signature = NULL;
+	*out_signature_len = 0;
+
+	if (padding_type == TLS_PADDING_NONE) {
+		rsa_padding = RSA_NO_PADDING;
+	} else if (padding_type == TLS_PADDING_RSA_PKCS1) {
+		rsa_padding = RSA_PKCS1_PADDING;
+	} else if (padding_type == TLS_PADDING_RSA_X9_31) {
+		rsa_padding = RSA_X931_PADDING;
+	} else {
+		tls_error_setx(&signer->error, "invalid RSA padding type (%d)",
+		    padding_type);
+		return (-1);
+	}
+
+	if (input_len > INT_MAX) {
+		tls_error_setx(&signer->error, "input too large");
+		return (-1);
+	}
+	if ((rsa_size = RSA_size(skey->rsa)) <= 0) {
+		tls_error_setx(&signer->error, "invalid RSA size: %d",
+		    rsa_size);
+		return (-1);
+	}
+	if ((signature = calloc(1, rsa_size)) == NULL) {
+		tls_error_set(&signer->error, "RSA signature");
+		return (-1);
+	}
+
+	if ((signature_len = RSA_private_encrypt((int)input_len, input,
+	    signature, skey->rsa, rsa_padding)) <= 0) {
+		/* XXX - include further details from libcrypto. */
+		tls_error_setx(&signer->error, "RSA signing failed");
+		free(signature);
+		return (-1);
+	}
+
+	*out_signature = signature;
+	*out_signature_len = (size_t)signature_len;
+
+	return (0);
+}
+
+static int
+tls_sign_ecdsa(struct tls_signer *signer, struct tls_signer_key *skey,
+    const uint8_t *input, size_t input_len, int padding_type,
+    uint8_t **out_signature, size_t *out_signature_len)
+{
+	unsigned char *signature;
+	int signature_len;
+
+	*out_signature = NULL;
+	*out_signature_len = 0;
+
+	if (padding_type != TLS_PADDING_NONE) {
+		tls_error_setx(&signer->error, "invalid ECDSA padding");
+		return (-1);
+	}
+
+	if (input_len > INT_MAX) {
+		tls_error_setx(&signer->error, "digest too large");
+		return (-1);
+	}
+	if ((signature_len = ECDSA_size(skey->ecdsa)) <= 0) {
+		tls_error_setx(&signer->error, "invalid ECDSA size: %d",
+		    signature_len);
+		return (-1);
+	}
+	if ((signature = calloc(1, signature_len)) == NULL) {
+		tls_error_set(&signer->error, "ECDSA signature");
+		return (-1);
+	}
+
+	if (!ECDSA_sign(0, input, input_len, signature, &signature_len,
+	    skey->ecdsa)) {
+		/* XXX - include further details from libcrypto. */
+		tls_error_setx(&signer->error, "ECDSA signing failed");
+		free(signature);
+		return (-1);
+	}
+
+	*out_signature = signature;
+	*out_signature_len = signature_len;
+
+	return (0);
+}
+
+int
+tls_signer_sign(struct tls_signer *signer, const char *pubkey_hash,
+    const uint8_t *input, size_t input_len, int padding_type,
+    uint8_t **out_signature, size_t *out_signature_len)
+{
+	struct tls_signer_key *skey;
+
+	*out_signature = NULL;
+	*out_signature_len = 0;
+
+	for (skey = signer->keys; skey; skey = skey->next)
+		if (!strcmp(pubkey_hash, skey->hash))
+			break;
+
+	if (skey == NULL) {
+		tls_error_setx(&signer->error, "key not found");
+		return (-1);
+	}
+
+	if (skey->rsa != NULL)
+		return tls_sign_rsa(signer, skey, input, input_len,
+		    padding_type, out_signature, out_signature_len);
+
+	if (skey->ecdsa != NULL)
+		return tls_sign_ecdsa(signer, skey, input, input_len,
+		    padding_type, out_signature, out_signature_len);
+
+	tls_error_setx(&signer->error, "unknown key type");
+
+	return (-1);
+}
+
+static int
+tls_rsa_priv_enc(int from_len, const unsigned char *from, unsigned char *to,
+    RSA *rsa, int rsa_padding)
+{
+	struct tls_config *config;
+	uint8_t *signature = NULL;
+	size_t signature_len = 0;
+	const char *pubkey_hash;
+	int padding_type;
+
+	/*
+	 * This function is called via RSA_private_encrypt() and has to conform
+	 * to its calling convention/signature. The caller is required to
+	 * provide a 'to' buffer of at least RSA_size() bytes.
+	 */
+
+	pubkey_hash = RSA_get_ex_data(rsa, 0);
+	config = RSA_get_ex_data(rsa, 1);
+
+	if (pubkey_hash == NULL || config == NULL)
+		goto err;
+
+	if (rsa_padding == RSA_NO_PADDING) {
+		padding_type = TLS_PADDING_NONE;
+	} else if (rsa_padding == RSA_PKCS1_PADDING) {
+		padding_type = TLS_PADDING_RSA_PKCS1;
+	} else if (rsa_padding == RSA_X931_PADDING) {
+		padding_type = TLS_PADDING_RSA_X9_31;
+	} else {
+		goto err;
+	}
+
+	if (from_len < 0)
+		goto err;
+
+	if (config->sign_cb(config->sign_cb_arg, pubkey_hash, from, from_len,
+	    padding_type, &signature, &signature_len) == -1)
+		goto err;
+
+	if (signature_len > INT_MAX || (int)signature_len > RSA_size(rsa))
+		goto err;
+
+	memcpy(to, signature, signature_len);
+	free(signature);
+
+	return ((int)signature_len);
+
+ err:
+	free(signature);
+
+	return (-1);
+}
+
+RSA_METHOD *
+tls_signer_rsa_method(void)
+{
+	static RSA_METHOD *rsa_method = NULL;
+
+	pthread_mutex_lock(&signer_method_lock);
+
+	if (rsa_method != NULL)
+		goto out;
+
+	rsa_method = RSA_meth_new("libtls RSA method", 0);
+	if (rsa_method == NULL)
+		goto out;
+
+	RSA_meth_set_priv_enc(rsa_method, tls_rsa_priv_enc);
+
+ out:
+	pthread_mutex_unlock(&signer_method_lock);
+
+	return (rsa_method);
+}
+
+static ECDSA_SIG *
+tls_ecdsa_do_sign(const unsigned char *dgst, int dgst_len, const BIGNUM *inv,
+    const BIGNUM *rp, EC_KEY *eckey)
+{
+	struct tls_config *config;
+	ECDSA_SIG *ecdsa_sig = NULL;
+	uint8_t *signature = NULL;
+	size_t signature_len = 0;
+	const unsigned char *p;
+	const char *pubkey_hash;
+
+	/*
+	 * This function is called via ECDSA_do_sign_ex() and has to conform
+	 * to its calling convention/signature.
+	 */
+
+	pubkey_hash = EC_KEY_get_ex_data(eckey, 0);
+	config = EC_KEY_get_ex_data(eckey, 1);
+
+	if (pubkey_hash == NULL || config == NULL)
+		goto err;
+
+	if (dgst_len < 0)
+		goto err;
+
+	if (config->sign_cb(config->sign_cb_arg, pubkey_hash, dgst, dgst_len,
+	    TLS_PADDING_NONE, &signature, &signature_len) == -1)
+		goto err;
+
+	p = signature;
+	if ((ecdsa_sig = d2i_ECDSA_SIG(NULL, &p, signature_len)) == NULL)
+		goto err;
+
+	free(signature);
+
+	return (ecdsa_sig);
+
+ err:
+	free(signature);
+
+	return (NULL);
+}
+
+EC_KEY_METHOD *
+tls_signer_ecdsa_method(void)
+{
+	static EC_KEY_METHOD *ecdsa_method = NULL;
+
+	pthread_mutex_lock(&signer_method_lock);
+
+	if (ecdsa_method != NULL)
+		goto out;
+
+	ecdsa_method = EC_KEY_METHOD_new(NULL);
+	if (ecdsa_method == NULL)
+		goto out;
+
+	EC_KEY_METHOD_set_sign(ecdsa_method, NULL, NULL, tls_ecdsa_do_sign);
+
+ out:
+	pthread_mutex_unlock(&signer_method_lock);
+
+	return (ecdsa_method);
+}