From: Guus Sliepen Date: Sun, 3 Jul 2011 20:15:00 +0000 (+0200) Subject: Add ECDSA key generation. X-Git-Tag: release-1.1pre2~31 X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=commitdiff_plain;h=8ace7f3e5771957fbdda8b817fa26951d9d62c28 Add ECDSA key generation. --- diff --git a/src/Makefile.am b/src/Makefile.am index a7c56c8a..33033744 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -11,7 +11,7 @@ tincd_SOURCES = \ protocol_key.c protocol_subnet.c route.c subnet.c tincd.c nodist_tincd_SOURCES = \ - device.c cipher.c crypto.c ecdh.c digest.c prf.c rsa.c + device.c cipher.c crypto.c ecdh.c ecdsagen.c digest.c prf.c rsa.c tincctl_SOURCES = \ utils.c getopt.c getopt1.c dropin.c \ @@ -32,7 +32,7 @@ INCLUDES = @INCLUDES@ -I$(top_builddir) noinst_HEADERS = \ xalloc.h utils.h getopt.h list.h splay_tree.h dropin.h fake-getaddrinfo.h fake-getnameinfo.h fake-gai-errnos.h ipv6.h ipv4.h ethernet.h \ - buffer.h cipher.h conf.h connection.h control.h control_common.h crypto.h device.h ecdh.h digest.h edge.h graph.h logger.h meta.h net.h netutl.h node.h prf.h process.h \ + buffer.h cipher.h conf.h connection.h control.h control_common.h crypto.h device.h digest.h ecdh.h ecdsagen.c edge.h graph.h logger.h meta.h net.h netutl.h node.h prf.h process.h \ protocol.h route.h rsa.h rsagen.h subnet.h tincctl.h top.h bsd/tunemu.h LIBS = @LIBS@ @LIBGCRYPT_LIBS@ diff --git a/src/openssl/ecdsagen.c b/src/openssl/ecdsagen.c new file mode 100644 index 00000000..93b0df61 --- /dev/null +++ b/src/openssl/ecdsagen.c @@ -0,0 +1,76 @@ +/* + ecdsagen.c -- ECDSA key generation and export + Copyright (C) 2008 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#include "system.h" + +#include +#include +#include + +#include "logger.h" +#include "ecdsagen.h" +#include "utils.h" + +// Generate ECDSA key + +bool ecdsa_generate(ecdsa_t *ecdsa) { + *ecdsa = EC_KEY_new_by_curve_name(NID_secp521r1); + + if(!EC_KEY_generate_key(*ecdsa)) { + logger(LOG_ERR, "Generating EC key failed: %s", ERR_error_string(ERR_get_error(), NULL)); + abort(); + } + + EC_KEY_set_asn1_flag(*ecdsa, OPENSSL_EC_NAMED_CURVE); + EC_KEY_set_conv_form(*ecdsa, POINT_CONVERSION_COMPRESSED); + + return true; +} + +// Write PEM ECDSA keys + +bool ecdsa_write_pem_public_key(ecdsa_t *ecdsa, FILE *fp) { + BIO *out = BIO_new(BIO_s_file()); + BIO_set_fp(out,fp,BIO_NOCLOSE); + PEM_write_bio_EC_PUBKEY(out, *ecdsa); + BIO_free(out); + return true; +} + +bool ecdsa_write_pem_private_key(ecdsa_t *ecdsa, FILE *fp) { + BIO *out = BIO_new(BIO_s_file()); + BIO_set_fp(out,fp,BIO_NOCLOSE); + PEM_write_bio_ECPrivateKey(out, *ecdsa, NULL, NULL, 0, NULL, NULL); + BIO_free(out); + return true; +} + +// Convert ECDSA public key to base64 format + +char *ecdsa_get_base64_public_key(ecdsa_t *ecdsa) { + unsigned char *pubkey = NULL; + int len = i2o_ECPublicKey(*ecdsa, &pubkey); + + char *base64 = malloc(len * 4 / 3 + 5); + b64encode(pubkey, base64, len); + + free(pubkey); + + return base64; +} diff --git a/src/openssl/ecdsagen.h b/src/openssl/ecdsagen.h new file mode 100644 index 00000000..8a40e451 --- /dev/null +++ b/src/openssl/ecdsagen.h @@ -0,0 +1,30 @@ +/* + ecdsagen.h -- ECDSA key generation and export + Copyright (C) 2011 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef __TINC_ECDSAGEN_H__ +#define __TINC_ECDSAGEN_H__ + +#include "ecdsa.h" + +extern bool ecdsa_generate(ecdsa_t *ecdsa); +extern bool ecdsa_write_pem_public_key(ecdsa_t *ecdsa, FILE *fp); +extern bool ecdsa_write_pem_private_key(ecdsa_t *ecdsa, FILE *fp); +extern char *ecdsa_get_base64_public_key(ecdsa_t *ecdsa); + +#endif