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+/*
+ * aes_icm.h
+ *
+ * Header for AES Integer Counter Mode.
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+/*
+ *
+ * Copyright (c) 2001-2005,2012, Cisco Systems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * Neither the name of the Cisco Systems, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef AES_ICM_H
+#define AES_ICM_H
+
+#include "cipher.h"
+#include <openssl/evp.h>
+#include <openssl/aes.h>
+
+#define SALT_SIZE 14
+#define AES_128_KEYSIZE AES_BLOCK_SIZE
+#define AES_192_KEYSIZE AES_BLOCK_SIZE + AES_BLOCK_SIZE / 2
+#define AES_256_KEYSIZE AES_BLOCK_SIZE * 2
+#define AES_128_KEYSIZE_WSALT AES_128_KEYSIZE + SALT_SIZE
+#define AES_192_KEYSIZE_WSALT AES_192_KEYSIZE + SALT_SIZE
+#define AES_256_KEYSIZE_WSALT AES_256_KEYSIZE + SALT_SIZE
+
+typedef struct {
+ v128_t counter; /* holds the counter value */
+ v128_t offset; /* initial offset value */
+ v256_t key;
+ int key_size;
+ EVP_CIPHER_CTX ctx;
+} aes_icm_ctx_t;
+
+err_status_t aes_icm_openssl_set_iv(aes_icm_ctx_t *c, void *iv, int dir);
+
+
+#endif /* AES_ICM_H */
+
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