Add (placeholder) CCM module

library/CMakeLists.txt

@@ -11,6 +11,7 @@ set(src
      bignum.c
      blowfish.c
      camellia.c
+     ccm.c
      certs.c
      cipher.c
      cipher_wrap.c

library/Makefile

@@ -37,7 +37,7 @@ endif
 OBJS=	aes.o		aesni.o		arc4.o			\
 		asn1parse.o								\
 		asn1write.o base64.o	bignum.o		\
-		blowfish.o	camellia.o					\
+		blowfish.o	camellia.o	ccm.o			\
 		certs.o		cipher.o	cipher_wrap.o	\
 		ctr_drbg.o	debug.o		des.o			\
 		dhm.o		ecdh.o		ecdsa.o			\

library/ccm.c

@@ -0,0 +1,67 @@
+/*
+ *  NIST SP800-38C compliant CCM implementation
+ *
+ *  Copyright (C) 2014, Brainspark B.V.
+ *
+ *  This file is part of PolarSSL (http://www.polarssl.org)
+ *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ *  All rights reserved.
+ *
+ *  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.
+ */
+
+/*
+ * Definition of CCM:
+ * http://csrc.nist.gov/publications/nistpubs/800-38C/SP800-38C_updated-July20_2007.pdf
+ * RFC 3610 "Counter with CBC-MAC (CCM)"
+ *
+ * Related:
+ * RFC 5116 "An Interface and Algorithms for Authenticated Encryption"
+ */
+
+#if !defined(POLARSSL_CONFIG_FILE)
+#include "polarssl/config.h"
+#else
+#include POLARSSL_CONFIG_FILE
+#endif
+
+#if defined(POLARSSL_CCM_C)
+
+#include "polarssl/ccm.h"
+
+
+#if defined(POLARSSL_SELF_TEST) && defined(POLARSSL_AES_C)
+
+#if defined(POLARSSL_PLATFORM_C)
+#include "polarssl/platform.h"
+#else
+#define polarssl_printf printf
+#endif
+
+int ccm_self_test( int verbose )
+{
+    if( verbose != 0 )
+        polarssl_printf( "  CCM: skip\n" );
+
+    if( verbose != 0 )
+        polarssl_printf( "\n" );
+
+    return( 0 );
+}
+
+#endif /* POLARSSL_SELF_TEST && POLARSSL_AES_C */
+
+#endif /* POLARSSL_CCM_C */

library/error.c

@@ -53,6 +53,10 @@
 #include "polarssl/camellia.h"
 #endif
 
+#if defined(POLARSSL_CCM_C)
+#include "polarssl/ccm.h"
+#endif
+
 #if defined(POLARSSL_CIPHER_C)
 #include "polarssl/cipher.h"
 #endif
@@ -575,6 +579,13 @@ void polarssl_strerror( int ret, char *buf, size_t buflen )
         snprintf( buf, buflen, "CAMELLIA - Invalid data input length" );
 #endif /* POLARSSL_CAMELLIA_C */
 
+#if defined(POLARSSL_CCM_C)
+    if( use_ret == -(POLARSSL_ERR_CCM_BAD_INPUT) )
+        snprintf( buf, buflen, "CCM - Bad input parameters to function" );
+    if( use_ret == -(POLARSSL_ERR_CCM_AUTH_FAILED) )
+        snprintf( buf, buflen, "CCM - Authenticated decryption failed" );
+#endif /* POLARSSL_CCM_C */
+
 #if defined(POLARSSL_CTR_DRBG_C)
     if( use_ret == -(POLARSSL_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED) )
         snprintf( buf, buflen, "CTR_DRBG - The entropy source failed" );

library/version_features.c

@@ -366,6 +366,9 @@ const char *features[] = {
 #if defined(POLARSSL_CAMELLIA_C)
     "POLARSSL_CAMELLIA_C",
 #endif /* POLARSSL_CAMELLIA_C */
+#if defined(POLARSSL_CCM_C)
+    "POLARSSL_CCM_C",
+#endif /* POLARSSL_CCM_C */
 #if defined(POLARSSL_CERTS_C)
     "POLARSSL_CERTS_C",
 #endif /* POLARSSL_CERTS_C */