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53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
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/*
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** ********************************************************************
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** md4.h -- Header file for implementation of **
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** MD4 Message Digest Algorithm **
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** Updated: 2/13/90 by Ronald L. Rivest **
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** (C) 1990 RSA Data Security, Inc. **
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** ********************************************************************
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*/
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/* MDstruct is the data structure for a message digest computation.
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*/
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typedef struct {
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unsigned int buffer[4]; /* Holds 4-word result of MD computation */
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unsigned char count[8]; /* Number of bits processed so far */
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unsigned int done; /* Nonzero means MD computation finished */
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} MDstruct, *MDptr;
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/* MDbegin(MD)
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** Input: MD -- an MDptr
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** Initialize the MDstruct prepatory to doing a message digest
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** computation.
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*/
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extern void MDbegin();
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/* MDupdate(MD,X,count)
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** Input: MD -- an MDptr
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** X -- a pointer to an array of unsigned characters.
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** count -- the number of bits of X to use (an unsigned int).
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** Updates MD using the first "count" bits of X.
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** The array pointed to by X is not modified.
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** If count is not a multiple of 8, MDupdate uses high bits of
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** last byte.
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** This is the basic input routine for a user.
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** The routine terminates the MD computation when count < 512, so
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** every MD computation should end with one call to MDupdate with a
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** count less than 512. Zero is OK for a count.
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*/
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extern void MDupdate();
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/* MDprint(MD)
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** Input: MD -- an MDptr
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** Prints message digest buffer MD as 32 hexadecimal digits.
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** Order is from low-order byte of buffer[0] to high-order byte
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** of buffer[3].
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** Each byte is printed with high-order hexadecimal digit first.
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*/
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extern void MDprint();
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/*
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** End of md4.h
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****************************(cut)***********************************/
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