adding eax-mode

[avr-crypto-lib.git] / bcal-eax.h

diff --git a/bcal-eax.h b/bcal-eax.h
new file mode 100644 (file)
index 0000000..190eee9
--- /dev/null
+++ b/bcal-eax.h
@@ -0,0 +1,53 @@
+/* bcal-eax.h */
+/*
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef BCALEAX_H_
+#define BCALEAX_H_
+
+#include <stdint.h>
+#include <string.h>
+#include "bcal-basic.h"
+#include "blockcipher_descriptor.h"
+#include "bcal-cmac.h"
+#include "bcal-ctr.h"
+
+typedef struct{
+       uint8_t*        nonce;
+       bcal_cmac_ctx_t ntag;
+       bcal_cmac_ctx_t ctag;
+       bcal_cmac_ctx_t htag;
+       bcal_ctr_ctx_t  cipher;
+       uint8_t         blocksize_B;
+       uint8_t         header_set;
+} bcal_eax_ctx_t;
+
+uint8_t bcal_eax_init(const bcdesc_t* desc, const void* key, uint16_t keysize_b, bcal_eax_ctx_t* ctx);
+void bcal_eax_free(bcal_eax_ctx_t* ctx);
+void bcal_eax_loadNonce(const void* nonce, uint16_t length_b, bcal_eax_ctx_t* ctx);
+void bcal_eax_addNextHeader(const void* header, bcal_eax_ctx_t* ctx);
+void bcal_eax_addLastHeader(const void* header, uint16_t length_b, bcal_eax_ctx_t* ctx);
+void bcal_eax_encNextBlock(void* block, bcal_eax_ctx_t* ctx);
+void bcal_eax_encLastBlock(void* block, uint16_t length_b, bcal_eax_ctx_t* ctx);
+void bcal_eax_decNextBlock(void* block, bcal_eax_ctx_t* ctx);
+void bcal_eax_decLastBlock(void* block, uint16_t length_b, bcal_eax_ctx_t* ctx);
+void bcal_eax_ctx2tag(void* dest, uint16_t length_b, bcal_eax_ctx_t* ctx);
+//void bcal_eax(void* dest, uint16_t out_length_b, const void* block, uint32_t length_b, bcal_eax_ctx_t* ctx);
+
+#endif /* BCALEAX_H_ */
+