| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | |
| 2 | /* |
| 3 | ** ******************************************************************** |
| 4 | ** md4.h -- Header file for implementation of ** |
| 5 | ** MD4 Message Digest Algorithm ** |
| 6 | ** Updated: 2/13/90 by Ronald L. Rivest ** |
| 7 | ** (C) 1990 RSA Data Security, Inc. ** |
| 8 | ** ******************************************************************** |
| 9 | */ |
| 10 | |
| 11 | #ifndef __P |
| 12 | # if defined(__STDC__) || defined(__GNUC__) |
| 13 | # define __P(x) x |
| 14 | # else |
| 15 | # define __P(x) () |
| 16 | # endif |
| 17 | #endif |
| 18 | |
| 19 | |
| 20 | /* MDstruct is the data structure for a message digest computation. |
| 21 | */ |
| 22 | typedef struct { |
| 23 | unsigned int buffer[4]; /* Holds 4-word result of MD computation */ |
| 24 | unsigned char count[8]; /* Number of bits processed so far */ |
| 25 | unsigned int done; /* Nonzero means MD computation finished */ |
| 26 | } MD4_CTX; |
| 27 | |
| 28 | /* MD4Init(MD4_CTX *) |
| 29 | ** Initialize the MD4_CTX prepatory to doing a message digest |
| 30 | ** computation. |
| 31 | */ |
| 32 | extern void MD4Init __P((MD4_CTX *MD)); |
| 33 | |
| 34 | /* MD4Update(MD,X,count) |
| 35 | ** Input: X -- a pointer to an array of unsigned characters. |
| 36 | ** count -- the number of bits of X to use (an unsigned int). |
| 37 | ** Updates MD using the first "count" bits of X. |
| 38 | ** The array pointed to by X is not modified. |
| 39 | ** If count is not a multiple of 8, MD4Update uses high bits of |
| 40 | ** last byte. |
| 41 | ** This is the basic input routine for a user. |
| 42 | ** The routine terminates the MD computation when count < 512, so |
| 43 | ** every MD computation should end with one call to MD4Update with a |
| 44 | ** count less than 512. Zero is OK for a count. |
| 45 | */ |
| 46 | extern void MD4Update __P((MD4_CTX *MD, unsigned char *X, unsigned int count)); |
| 47 | |
| 48 | /* MD4Print(MD) |
| 49 | ** Prints message digest buffer MD as 32 hexadecimal digits. |
| 50 | ** Order is from low-order byte of buffer[0] to high-order byte |
| 51 | ** of buffer[3]. |
| 52 | ** Each byte is printed with high-order hexadecimal digit first. |
| 53 | */ |
| 54 | extern void MD4Print __P((MD4_CTX *)); |
| 55 | |
| 56 | /* MD4Final(buf, MD) |
| 57 | ** Returns message digest from MD and terminates the message |
| 58 | ** digest computation. |
| 59 | */ |
| 60 | extern void MD4Final __P((unsigned char *, MD4_CTX *)); |
| 61 | |
| 62 | /* |
| 63 | ** End of md4.h |
| 64 | ****************************(cut)***********************************/ |