X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/cdc9a7562d70ec1b4c58841acc64150774e377b6..c8a0f5503172f25620670a9ba992d8c923b5df95:/common/polarssl/aes_cmac128.h

diff --git a/common/polarssl/aes_cmac128.h b/common/polarssl/aes_cmac128.h
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+/*
+ *  AES-CMAC from NIST Special Publication 800-38B — Recommendation for block cipher modes of operation: The CMAC mode for authentication.
+ *
+ *  Copyright (C) 2006-2014, Brainspark B.V.
+ *  Copyright (C) 2014, Anargyros Plemenos
+ *  Tests added Merkok, 2018
+ *
+ *  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.
+ *
+ *  Reference : https://polarssl.org/discussions/generic/authentication-token
+ *  NIST Special Publication 800-38B — Recommendation for block cipher modes of operation: The CMAC mode for authentication.
+ *  Tests here:
+ *  https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Standards-and-Guidelines/documents/examples/AES_CMAC.pdf
+*/
+
+#include <stdint.h>
+#include <stddef.h>
+#include "aes.h"
+
+typedef struct aes_cmac_128_context {
+    aes_context aes_key;
+
+    uint8_t K1[16];
+    uint8_t K2[16];
+
+    uint8_t X[16];
+
+    uint8_t last[16];
+    size_t last_len;
+}
+aes_cmac128_context;
+
+/*
+ * \brief AES-CMAC-128 context setup
+ *
+ * \param ctx      context to be initialized
+ * \param key      secret key for AES-128
+ */
+void aes_cmac128_starts(aes_cmac128_context *ctx, const uint8_t K[16]);
+
+/*
+ * \brief AES-CMAC-128 process message
+ *
+ * \param ctx      context to be initialized
+ * \param _msg     the given message
+ * \param _msg_len the length of message
+ */
+void aes_cmac128_update(aes_cmac128_context *ctx, const uint8_t *_msg, size_t _msg_len);
+
+/*
+ * \brief AES-CMAC-128 compute T
+ *
+ * \param ctx      context to be initialized
+ * \param T        the generated MAC which is used to validate the message
+ */
+void aes_cmac128_final(aes_cmac128_context *ctx, uint8_t T[16]);
+
+/**
+ * \brief          Checkup routine
+ *
+ * \return         0 if successful, or 1 if the test failed
+ */
+int aes_cmac_self_test( int verbose );
+