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1 /* crypto/rc5/rc5.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 |
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59 #ifndef HEADER_RC5_H |
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60 #define HEADER_RC5_H |
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61 |
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62 #ifdef __cplusplus |
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63 extern "C" { |
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64 #endif |
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65 |
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66 #ifdef OPENSSL_NO_RC5 |
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67 #error RC5 is disabled. |
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68 #endif |
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69 |
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70 #define RC5_ENCRYPT 1 |
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71 #define RC5_DECRYPT 0 |
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72 |
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73 /* 32 bit. For Alpha, things may get weird */ |
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74 #define RC5_32_INT unsigned long |
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75 |
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76 #define RC5_32_BLOCK 8 |
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77 #define RC5_32_KEY_LENGTH 16 /* This is a default, max is 255 */ |
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78 |
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79 /* This are the only values supported. Tweak the code if you want more |
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80 * The most supported modes will be |
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81 * RC5-32/12/16 |
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82 * RC5-32/16/8 |
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83 */ |
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84 #define RC5_8_ROUNDS 8 |
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85 #define RC5_12_ROUNDS 12 |
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86 #define RC5_16_ROUNDS 16 |
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87 |
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88 typedef struct rc5_key_st |
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89 { |
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90 /* Number of rounds */ |
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91 int rounds; |
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92 RC5_32_INT data[2*(RC5_16_ROUNDS+1)]; |
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93 } RC5_32_KEY; |
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94 |
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95 |
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96 void RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data, |
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97 int rounds); |
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98 void RC5_32_ecb_encrypt(const unsigned char *in,unsigned char *out,RC5_32_KEY *key, |
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99 int enc); |
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100 void RC5_32_encrypt(unsigned long *data,RC5_32_KEY *key); |
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101 void RC5_32_decrypt(unsigned long *data,RC5_32_KEY *key); |
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102 void RC5_32_cbc_encrypt(const unsigned char *in, unsigned char *out, |
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103 long length, RC5_32_KEY *ks, unsigned char *iv, |
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104 int enc); |
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105 void RC5_32_cfb64_encrypt(const unsigned char *in, unsigned char *out, |
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106 long length, RC5_32_KEY *schedule, |
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107 unsigned char *ivec, int *num, int enc); |
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108 void RC5_32_ofb64_encrypt(const unsigned char *in, unsigned char *out, |
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109 long length, RC5_32_KEY *schedule, |
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110 unsigned char *ivec, int *num); |
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111 |
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112 #ifdef __cplusplus |
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113 } |
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114 #endif |
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115 |
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116 #endif |
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117 |