[d0950ad] | 1 | |
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| 2 | /* |
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| 3 | ** ******************************************************************** |
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| 4 | ** md4.h -- Header file for implementation of ** |
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| 5 | ** MD4 Message Digest Algorithm ** |
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| 6 | ** Updated: 2/13/90 by Ronald L. Rivest ** |
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| 7 | ** (C) 1990 RSA Data Security, Inc. ** |
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| 8 | ** ******************************************************************** |
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| 9 | */ |
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| 10 | |
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| 11 | #ifndef __P |
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| 12 | # if defined(__STDC__) || defined(__GNUC__) |
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| 13 | # define __P(x) x |
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| 14 | # else |
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| 15 | # define __P(x) () |
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| 16 | # endif |
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| 17 | #endif |
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| 18 | |
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| 19 | |
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| 20 | /* MDstruct is the data structure for a message digest computation. |
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| 21 | */ |
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| 22 | typedef struct { |
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| 23 | unsigned int buffer[4]; /* Holds 4-word result of MD computation */ |
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| 24 | unsigned char count[8]; /* Number of bits processed so far */ |
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| 25 | unsigned int done; /* Nonzero means MD computation finished */ |
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| 26 | } MD4_CTX; |
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| 27 | |
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| 28 | /* MD4Init(MD4_CTX *) |
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| 29 | ** Initialize the MD4_CTX prepatory to doing a message digest |
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| 30 | ** computation. |
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| 31 | */ |
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| 32 | extern void MD4Init __P((MD4_CTX *MD)); |
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| 33 | |
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| 34 | /* MD4Update(MD,X,count) |
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| 35 | ** Input: X -- a pointer to an array of unsigned characters. |
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| 36 | ** count -- the number of bits of X to use (an unsigned int). |
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| 37 | ** Updates MD using the first "count" bits of X. |
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| 38 | ** The array pointed to by X is not modified. |
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| 39 | ** If count is not a multiple of 8, MD4Update uses high bits of |
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| 40 | ** last byte. |
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| 41 | ** This is the basic input routine for a user. |
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| 42 | ** The routine terminates the MD computation when count < 512, so |
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| 43 | ** every MD computation should end with one call to MD4Update with a |
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| 44 | ** count less than 512. Zero is OK for a count. |
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| 45 | */ |
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| 46 | extern void MD4Update __P((MD4_CTX *MD, unsigned char *X, unsigned int count)); |
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| 47 | |
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| 48 | /* MD4Print(MD) |
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| 49 | ** Prints message digest buffer MD as 32 hexadecimal digits. |
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| 50 | ** Order is from low-order byte of buffer[0] to high-order byte |
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| 51 | ** of buffer[3]. |
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| 52 | ** Each byte is printed with high-order hexadecimal digit first. |
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| 53 | */ |
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| 54 | extern void MD4Print __P((MD4_CTX *)); |
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| 55 | |
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| 56 | /* MD4Final(buf, MD) |
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| 57 | ** Returns message digest from MD and terminates the message |
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| 58 | ** digest computation. |
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| 59 | */ |
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| 60 | extern void MD4Final __P((unsigned char *, MD4_CTX *)); |
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| 61 | |
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| 62 | /* |
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| 63 | ** End of md4.h |
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| 64 | ****************************(cut)***********************************/ |
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