crypto: move to common

As of now, only LibVNCServer makes uses of these digest functions _and_
they depend on sys/uio.h, but in the future LibVNCClient will need those
as well.

1 files changed, 50 insertions, 0 deletions

diff --git a/common/rfbcrypto_gnutls.c b/common/rfbcrypto_gnutls.c
new file mode 100644
index 0000000..2ecb2da
--- /dev/null
+++ b/common/rfbcrypto_gnutls.c
@@ -0,0 +1,50 @@
+/*
+ * rfbcrypto_gnutls.c - Crypto wrapper (gnutls version)
+ */
+
+/*
+ *  Copyright (C) 2011 Gernot Tenchio
+ *
+ *  This 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 software 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 software; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ *  USA.
+ */
+
+#include <string.h>
+#include <gcrypt.h>
+#include "rfbcrypto.h"
+
+void digestmd5(const struct iovec *iov, int iovcnt, void *dest)
+{
+    gcry_md_hd_t c;
+    int i;
+
+    gcry_md_open(&c, GCRY_MD_MD5, 0);
+    for (i = 0; i < iovcnt; i++)
+	gcry_md_write(c, iov[i].iov_base, iov[i].iov_len);
+    gcry_md_final(c);
+    memcpy(dest, gcry_md_read(c, 0), gcry_md_get_algo_dlen(GCRY_MD_MD5));
+}
+
+void digestsha1(const struct iovec *iov, int iovcnt, void *dest)
+{
+    gcry_md_hd_t c;
+    int i;
+
+    gcry_md_open(&c, GCRY_MD_SHA1, 0);
+    for (i = 0; i < iovcnt; i++)
+	gcry_md_write(c, iov[i].iov_base, iov[i].iov_len);
+    gcry_md_final(c);
+    memcpy(dest, gcry_md_read(c, 0), gcry_md_get_algo_dlen(GCRY_MD_SHA1));
+}