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1 /* |
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2 Copyright (C) 1999 Aladdin Enterprises. All rights reserved. |
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3 |
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4 This software is provided 'as-is', without any express or implied |
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5 warranty. In no event will the authors be held liable for any damages |
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6 arising from the use of this software. |
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7 |
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8 Permission is granted to anyone to use this software for any purpose, |
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9 including commercial applications, and to alter it and redistribute it |
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10 freely, subject to the following restrictions: |
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11 |
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12 1. The origin of this software must not be misrepresented; you must not |
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13 claim that you wrote the original software. If you use this software |
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14 in a product, an acknowledgment in the product documentation would be |
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15 appreciated but is not required. |
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16 2. Altered source versions must be plainly marked as such, and must not be |
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17 misrepresented as being the original software. |
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18 3. This notice may not be removed or altered from any source distribution. |
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19 |
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20 L. Peter Deutsch |
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21 ghost@aladdin.com |
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22 |
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23 */ |
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24 /* |
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25 Independent implementation of MD5 (RFC 1321). |
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26 |
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27 This code implements the MD5 Algorithm defined in RFC 1321. |
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28 It is derived directly from the text of the RFC and not from the |
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29 reference implementation. |
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30 |
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31 The original and principal author of md5.h is L. Peter Deutsch |
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32 <ghost@aladdin.com>. Other authors are noted in the change history |
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33 that follows (in reverse chronological order): |
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34 |
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35 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. |
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36 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); |
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37 added conditionalization for C++ compilation from Martin |
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38 Purschke <purschke@bnl.gov>. |
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39 1999-05-03 lpd Original version. |
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40 */ |
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41 |
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42 #ifndef md5_INCLUDED |
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43 # define md5_INCLUDED |
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44 |
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45 /* |
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46 * This code has some adaptations for the Ghostscript environment, but it |
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47 * will compile and run correctly in any environment with 8-bit chars and |
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48 * 32-bit ints. Specifically, it assumes that if the following are |
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49 * defined, they have the same meaning as in Ghostscript: P1, P2, P3, |
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50 * ARCH_IS_BIG_ENDIAN. |
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51 */ |
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52 |
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53 typedef unsigned char md5_byte_t; /* 8-bit byte */ |
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54 typedef unsigned int md5_word_t; /* 32-bit word */ |
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55 |
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56 /* Define the state of the MD5 Algorithm. */ |
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57 typedef struct md5_state_s { |
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58 md5_word_t count[2]; /* message length in bits, lsw first */ |
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59 md5_word_t abcd[4]; /* digest buffer */ |
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60 md5_byte_t buf[64]; /* accumulate block */ |
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61 } md5_state_t; |
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62 |
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63 #ifdef __cplusplus |
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64 extern "C" |
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65 { |
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66 #endif |
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67 |
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68 /* Initialize the algorithm. */ |
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69 #ifdef P1 |
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70 void md5_init(P1(md5_state_t *pms)); |
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71 #else |
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72 void md5_init(md5_state_t *pms); |
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73 #endif |
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74 |
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75 /* Append a string to the message. */ |
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76 #ifdef P3 |
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77 void md5_append(P3(md5_state_t *pms, const md5_byte_t *data, int nbytes)); |
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78 #else |
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79 void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes); |
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80 #endif |
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81 |
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82 /* Finish the message and return the digest. */ |
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83 #ifdef P2 |
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84 void md5_finish(P2(md5_state_t *pms, md5_byte_t digest[16])); |
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85 #else |
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86 void md5_finish(md5_state_t *pms, md5_byte_t digest[16]); |
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87 #endif |
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88 |
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89 #ifdef __cplusplus |
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90 } /* end extern "C" */ |
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91 #endif |
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92 |
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93 #endif /* md5_INCLUDED */ |
