18ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 28ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 38ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** ******************************************************************** 48ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** md4.h -- Header file for implementation of ** 58ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** MD4 Message Digest Algorithm ** 68ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Updated: 2/13/90 by Ronald L. Rivest ** 78ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** (C) 1990 RSA Data Security, Inc. ** 88ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** ******************************************************************** 98ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project*/ 108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifndef __P 128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project# if defined(__STDC__) || defined(__GNUC__) 138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project# define __P(x) x 148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project# else 158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project# define __P(x) () 168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project# endif 178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* MDstruct is the data structure for a message digest computation. 218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project*/ 228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projecttypedef struct { 238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project unsigned int buffer[4]; /* Holds 4-word result of MD computation */ 248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project unsigned char count[8]; /* Number of bits processed so far */ 258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project unsigned int done; /* Nonzero means MD computation finished */ 268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} MD4_CTX; 278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* MD4Init(MD4_CTX *) 298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Initialize the MD4_CTX prepatory to doing a message digest 308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** computation. 318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project*/ 328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectextern void MD4Init __P((MD4_CTX *MD)); 338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* MD4Update(MD,X,count) 358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Input: X -- a pointer to an array of unsigned characters. 368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** count -- the number of bits of X to use (an unsigned int). 378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Updates MD using the first "count" bits of X. 388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** The array pointed to by X is not modified. 398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** If count is not a multiple of 8, MD4Update uses high bits of 408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** last byte. 418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** This is the basic input routine for a user. 428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** The routine terminates the MD computation when count < 512, so 438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** every MD computation should end with one call to MD4Update with a 448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** count less than 512. Zero is OK for a count. 458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project*/ 468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectextern void MD4Update __P((MD4_CTX *MD, unsigned char *X, unsigned int count)); 478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* MD4Print(MD) 498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Prints message digest buffer MD as 32 hexadecimal digits. 508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Order is from low-order byte of buffer[0] to high-order byte 518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** of buffer[3]. 528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Each byte is printed with high-order hexadecimal digit first. 538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project*/ 548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectextern void MD4Print __P((MD4_CTX *)); 558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* MD4Final(buf, MD) 578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** Returns message digest from MD and terminates the message 588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** digest computation. 598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project*/ 608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectextern void MD4Final __P((unsigned char *, MD4_CTX *)); 618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project** End of md4.h 648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project****************************(cut)***********************************/ 65