patch to Vanilla Tomato 1.28

1 files changed, 109 insertions, 0 deletions

diff --git a/release/src/router/matrixssl/src/crypto/peersec/arc4.c b/release/src/router/matrixssl/src/crypto/peersec/arc4.c
new file mode 100644
index 00000000..4e39553d
--- /dev/null
+++ b/release/src/router/matrixssl/src/crypto/peersec/arc4.c
@@ -0,0 +1,109 @@
+/*
+ *	arc4.c
+ *	Release $Name: MATRIXSSL_1_8_8_OPEN $
+ *
+ *	ARC4 stream cipher implementation
+ */
+/*
+ *	Copyright (c) PeerSec Networks, 2002-2009. All Rights Reserved.
+ *	The latest version of this code is available at http://www.matrixssl.org
+ *
+ *	This software is open source; 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 General Public License does NOT permit incorporating this software 
+ *	into proprietary programs.  If you are unable to comply with the GPL, a 
+ *	commercial license for this software may be purchased from PeerSec Networks
+ *	at http://www.peersec.com
+ *	
+ *	This program is distributed in 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *	http://www.gnu.org/copyleft/gpl.html
+ */
+/******************************************************************************/
+
+#include "../cryptoLayer.h"
+
+#ifdef USE_ARC4
+
+/*
+	Some accounts, such as O'Reilly's Secure Programming Cookbook say that no 
+	more than 2^30 bytes should be processed without rekeying, so we 
+	enforce that limit here.  FYI, this is equal to 1GB of data transferred.
+*/
+#define ARC4_MAX_BYTES	0x40000000
+
+/******************************************************************************/
+/*
+	SSL_RSA_WITH_RC4_* cipher callbacks
+ */
+void matrixArc4Init(sslCipherContext_t *ctx, unsigned char *key, int32 keylen)
+{
+	unsigned char	index1,	index2, tmp, *state;
+	short			counter;
+
+	ctx->arc4.byteCount = 0;
+	state = &ctx->arc4.state[0];
+
+	for (counter = 0; counter < 256; counter++) {
+		state[counter] = (unsigned char)counter;
+	}
+	ctx->arc4.x = 0;
+	ctx->arc4.y = 0;
+	index1 = 0;
+	index2 = 0;
+
+	for (counter = 0; counter < 256; counter++) {
+		index2 = (key[index1] + state[counter] + index2) & 0xff;
+
+		tmp = state[counter];
+		state[counter] = state[index2];
+		state[index2] = tmp;
+
+		index1 = (index1 + 1) % keylen;
+	}
+}
+
+int32 matrixArc4(sslCipherContext_t *ctx, unsigned char *in,
+			   unsigned char *out, int32 len)
+{
+	unsigned char	x, y, *state, xorIndex, tmp;
+	short			counter;
+
+	ctx->arc4.byteCount += len;
+	if (ctx->arc4.byteCount > ARC4_MAX_BYTES) {
+		return -1;
+	}
+
+	x = ctx->arc4.x;
+	y = ctx->arc4.y;
+	state = &ctx->arc4.state[0];
+	for (counter = 0; counter < len; counter++) {
+		x = (x + 1) & 0xff;
+		y = (state[x] + y) & 0xff;
+
+		tmp = state[x];
+		state[x] = state[y];
+		state[y] = tmp;
+
+		xorIndex = (state[x] + state[y]) & 0xff;
+
+		tmp = in[counter];
+		tmp ^= state[xorIndex];
+		out[counter] = tmp;
+	}
+	ctx->arc4.x = x;
+	ctx->arc4.y = y;
+	return len;
+}
+
+#endif /* USE_ARC4 */
+
+/******************************************************************************/