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1 /* |
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2 * aes_icm.h |
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3 * |
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4 * Header for AES Integer Counter Mode. |
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5 * |
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6 * David A. McGrew |
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7 * Cisco Systems, Inc. |
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8 * |
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9 */ |
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10 /* |
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11 * |
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12 * Copyright (c) 2001-2006, Cisco Systems, Inc. |
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13 * All rights reserved. |
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14 * |
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15 * Redistribution and use in source and binary forms, with or without |
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16 * modification, are permitted provided that the following conditions |
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17 * are met: |
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18 * |
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19 * Redistributions of source code must retain the above copyright |
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20 * notice, this list of conditions and the following disclaimer. |
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21 * |
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22 * Redistributions in binary form must reproduce the above |
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23 * copyright notice, this list of conditions and the following |
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24 * disclaimer in the documentation and/or other materials provided |
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25 * with the distribution. |
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26 * |
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27 * Neither the name of the Cisco Systems, Inc. nor the names of its |
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28 * contributors may be used to endorse or promote products derived |
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29 * from this software without specific prior written permission. |
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30 * |
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31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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34 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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35 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
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36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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42 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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43 * |
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44 */ |
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45 |
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46 #ifndef AES_ICM_H |
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47 #define AES_ICM_H |
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48 |
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49 #include "aes.h" |
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50 #include "cipher.h" |
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51 |
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52 typedef struct { |
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53 v128_t counter; /* holds the counter value */ |
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54 v128_t offset; /* initial offset value */ |
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55 v128_t keystream_buffer; /* buffers bytes of keystream */ |
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56 aes_expanded_key_t expanded_key; /* the cipher key */ |
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57 int bytes_in_buffer; /* number of unused bytes in buffer */ |
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58 } aes_icm_ctx_t; |
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59 |
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60 |
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61 err_status_t |
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62 aes_icm_context_init(aes_icm_ctx_t *c, |
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63 const unsigned char *key, |
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64 int key_len); |
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65 |
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66 err_status_t |
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67 aes_icm_set_iv(aes_icm_ctx_t *c, void *iv); |
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68 |
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69 err_status_t |
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70 aes_icm_encrypt(aes_icm_ctx_t *c, |
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71 unsigned char *buf, unsigned int *bytes_to_encr); |
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72 |
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73 err_status_t |
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74 aes_icm_output(aes_icm_ctx_t *c, |
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75 unsigned char *buf, int bytes_to_output); |
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76 |
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77 err_status_t |
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78 aes_icm_dealloc(cipher_t *c); |
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79 |
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80 err_status_t |
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81 aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c, |
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82 unsigned char *buf, |
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83 unsigned int *enc_len, |
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84 int forIsmacryp); |
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85 |
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86 err_status_t |
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87 aes_icm_alloc_ismacryp(cipher_t **c, |
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88 int key_len, |
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89 int forIsmacryp); |
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90 |
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91 #endif /* AES_ICM_H */ |
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92 |