cpukit/include/md4.h

0001 /*
0002 ** ********************************************************************
0003 ** md4.h -- Header file for implementation of                        **
0004 ** MD4 Message Digest Algorithm                                      **
0005 ** Updated: 2/13/90 by Ronald L. Rivest                              **
0006 ** (C) 1990 RSA Data Security, Inc.                                  **
0007 ** ********************************************************************
0008 */
0009
0010 #include <stdint.h>
0011
0012 /* MDstruct is the data structure for a message digest computation.
0013 */
0014 typedef struct {
0015     uint32_t buffer[4]; /* Holds 4-word result of MD computation */
0016     uint8_t  count[8];  /* Number of bits processed so far */
0017     uint32_t done;      /* Nonzero means MD computation finished */
0018 } MD4_CTX;
0019
0020 /* MD4Init(MD4_CTX *)
0021 ** Initialize the MD4_CTX prepatory to doing a message digest
0022 ** computation.
0023 */
0024 extern void MD4Init(MD4_CTX *MD);
0025
0026 /* MD4Update(MD,X,count)
0027 ** Input: X -- a pointer to an array of unsigned characters.
0028 **        count -- the number of bits of X to use (an unsigned int).
0029 ** Updates MD using the first "count" bits of X.
0030 ** The array pointed to by X is not modified.
0031 ** If count is not a multiple of 8, MD4Update uses high bits of
0032 ** last byte.
0033 ** This is the basic input routine for a user.
0034 ** The routine terminates the MD computation when count < 512, so
0035 ** every MD computation should end with one call to MD4Update with a
0036 ** count less than 512.  Zero is OK for a count.
0037 */
0038 extern void MD4Update(MD4_CTX *MD, unsigned char *X, unsigned int count);
0039
0040 /* MD4Print(MD)
0041 ** Prints message digest buffer MD as 32 hexadecimal digits.
0042 ** Order is from low-order byte of buffer[0] to high-order byte
0043 ** of buffer[3].
0044 ** Each byte is printed with high-order hexadecimal digit first.
0045 */
0046 extern void MD4Print(MD4_CTX *);
0047
0048 /* MD4Final(buf, MD)
0049 ** Returns message digest from MD and terminates the message
0050 ** digest computation.
0051 */
0052 extern void MD4Final(unsigned char *, MD4_CTX *);
0053
0054 /*
0055 ** End of md4.h
0056 ****************************(cut)***********************************/