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/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2010 Brian Raderman <brian@irregularexpression.org>
* Copyright (C) 2013-2015 Vasily Kulikov <segoon@openwall.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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 <CommonCrypto/CommonDigest.h>
#include <Security/SecKey.h>
#include <Security/Security.h>
#include "crypto_osx.h"
#include <err.h>
void
printErrorMsg(const char *func, CFErrorRef error)
{
CFStringRef desc = CFErrorCopyDescription(error);
warnx("%s failed: %s", func, CFStringGetCStringPtr(desc, kCFStringEncodingUTF8));
CFRelease(desc);
}
void
printErrorStatusMsg(const char *func, OSStatus status)
{
CFStringRef error;
error = SecCopyErrorMessageString(status, NULL);
if (error)
{
warnx("%s failed: %s", func, CFStringGetCStringPtr(error, kCFStringEncodingUTF8));
CFRelease(error);
}
else
{
warnx("%s failed: %X", func, (int)status);
}
}
void
signData(SecIdentityRef identity, const uint8_t *from, int flen, uint8_t *to, size_t *tlen)
{
SecKeyRef privateKey = NULL;
OSStatus status;
status = SecIdentityCopyPrivateKey(identity, &privateKey);
if (status != noErr)
{
printErrorStatusMsg("signData: SecIdentityCopyPrivateKey", status);
*tlen = 0;
return;
}
status = SecKeyRawSign(privateKey, kSecPaddingPKCS1, from, flen, to, tlen);
CFRelease(privateKey);
if (status != noErr)
{
printErrorStatusMsg("signData: SecKeyRawSign", status);
*tlen = 0;
return;
}
}
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