1 /* crypto/hmac/hmac.h */ |
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2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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3 * All rights reserved. |
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4 * |
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5 * This package is an SSL implementation written |
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6 * by Eric Young (eay@cryptsoft.com). |
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7 * The implementation was written so as to conform with Netscapes SSL. |
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8 * |
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9 * This library is free for commercial and non-commercial use as long as |
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10 * the following conditions are aheared to. The following conditions |
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11 * apply to all code found in this distribution, be it the RC4, RSA, |
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12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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13 * included with this distribution is covered by the same copyright terms |
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14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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15 * |
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16 * Copyright remains Eric Young's, and as such any Copyright notices in |
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17 * the code are not to be removed. |
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18 * If this package is used in a product, Eric Young should be given attribution |
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19 * as the author of the parts of the library used. |
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20 * This can be in the form of a textual message at program startup or |
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21 * in documentation (online or textual) provided with the package. |
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22 * |
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23 * Redistribution and use in source and binary forms, with or without |
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24 * modification, are permitted provided that the following conditions |
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25 * are met: |
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26 * 1. Redistributions of source code must retain the copyright |
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27 * notice, this list of conditions and the following disclaimer. |
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28 * 2. Redistributions in binary form must reproduce the above copyright |
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29 * notice, this list of conditions and the following disclaimer in the |
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30 * documentation and/or other materials provided with the distribution. |
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31 * 3. All advertising materials mentioning features or use of this software |
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32 * must display the following acknowledgement: |
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33 * "This product includes cryptographic software written by |
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34 * Eric Young (eay@cryptsoft.com)" |
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35 * The word 'cryptographic' can be left out if the rouines from the library |
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36 * being used are not cryptographic related :-). |
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37 * 4. If you include any Windows specific code (or a derivative thereof) from |
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38 * the apps directory (application code) you must include an acknowledgement: |
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39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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40 * |
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41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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51 * SUCH DAMAGE. |
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52 * |
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53 * The licence and distribution terms for any publically available version or |
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54 * derivative of this code cannot be changed. i.e. this code cannot simply be |
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55 * copied and put under another distribution licence |
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56 * [including the GNU Public Licence.] |
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57 */ |
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58 #ifndef HEADER_HMAC_H |
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59 #define HEADER_HMAC_H |
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60 |
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61 #ifdef OPENSSL_NO_HMAC |
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62 #error HMAC is disabled. |
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63 #endif |
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64 |
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65 #include <openssl/evp.h> |
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66 |
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67 #define HMAC_MAX_MD_CBLOCK 64 |
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68 |
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69 #ifdef __cplusplus |
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70 extern "C" { |
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71 #endif |
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72 |
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73 typedef struct hmac_ctx_st |
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74 { |
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75 const EVP_MD *md; |
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76 EVP_MD_CTX md_ctx; |
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77 EVP_MD_CTX i_ctx; |
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78 EVP_MD_CTX o_ctx; |
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79 unsigned int key_length; |
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80 unsigned char key[HMAC_MAX_MD_CBLOCK]; |
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81 } HMAC_CTX; |
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82 |
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83 #define HMAC_size(e) (EVP_MD_size((e)->md)) |
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84 |
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85 |
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86 void HMAC_CTX_init(HMAC_CTX *ctx); |
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87 void HMAC_CTX_cleanup(HMAC_CTX *ctx); |
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88 |
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89 #define HMAC_cleanup(ctx) HMAC_CTX_cleanup(ctx) /* deprecated */ |
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90 |
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91 void HMAC_Init(HMAC_CTX *ctx, const void *key, int len, |
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92 const EVP_MD *md); /* deprecated */ |
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93 void HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len, |
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94 const EVP_MD *md, ENGINE *impl); |
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95 void HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, int len); |
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96 void HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len); |
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97 unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len, |
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98 const unsigned char *d, int n, unsigned char *md, |
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99 unsigned int *md_len); |
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100 |
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101 |
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102 #ifdef __cplusplus |
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103 } |
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104 #endif |
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105 |
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106 #endif |
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107 |
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