| 1 | /* |
| 2 | This code is from rfc1186. |
| 3 | */ |
| 4 | |
| 5 | /* |
| 6 | ** ******************************************************************** |
| 7 | ** md4.h -- Header file for implementation of ** |
| 8 | ** MD4 Message Digest Algorithm ** |
| 9 | ** Updated: 2/13/90 by Ronald L. Rivest ** |
| 10 | ** (C) 1990 RSA Data Security, Inc. ** |
| 11 | ** ******************************************************************** |
| 12 | */ |
| 13 | |
| 14 | /* MDstruct is the data structure for a message digest computation. |
| 15 | */ |
| 16 | typedef struct { |
| 17 | unsigned int32 buffer[4]; /* Holds 4-word result of MD computation */ |
| 18 | unsigned char count[8]; /* Number of bits processed so far */ |
| 19 | unsigned int done; /* Nonzero means MD computation finished */ |
| 20 | } MDstruct, *MDptr; |
| 21 | |
| 22 | /* MDbegin(MD) |
| 23 | |
| 24 | |
| 25 | |
| 26 | ** Input: MD -- an MDptr |
| 27 | ** Initialize the MDstruct prepatory to doing a message digest |
| 28 | ** computation. |
| 29 | */ |
| 30 | extern void MDbegin(); |
| 31 | |
| 32 | /* MDupdate(MD,X,count) |
| 33 | ** Input: MD -- an MDptr |
| 34 | ** X -- a pointer to an array of unsigned characters. |
| 35 | ** count -- the number of bits of X to use (an unsigned int). |
| 36 | ** Updates MD using the first "count" bits of X. |
| 37 | ** The array pointed to by X is not modified. |
| 38 | ** If count is not a multiple of 8, MDupdate uses high bits of |
| 39 | ** last byte. |
| 40 | ** This is the basic input routine for a user. |
| 41 | ** The routine terminates the MD computation when count < 512, so |
| 42 | ** every MD computation should end with one call to MDupdate with a |
| 43 | ** count less than 512. Zero is OK for a count. |
| 44 | */ |
| 45 | extern void MDupdate(); |
| 46 | |
| 47 | /* |
| 48 | ** End of md4.h |
| 49 | */ |