tests/sha-private.h

   1 /************************ sha-private.h ************************/
   2 /***************** See RFC 6234 for details. *******************/
   3 /* Copyright (c) 2011 IETF Trust and the persons identified as */
   4 /* authors of the code.  All rights reserved.                  */
   5 /* See sha.h for terms of use and redistribution.              */
   6
   7 #ifndef _SHA_PRIVATE__H
   8 #define _SHA_PRIVATE__H
   9 /*
  10  * These definitions are defined in FIPS 180-3, section 4.1.
  11  * Ch() and Maj() are defined identically in sections 4.1.1,
  12  * 4.1.2, and 4.1.3.
  13  *
  14  * The definitions used in FIPS 180-3 are as follows:
  15  */
  16
  17 #ifndef USE_MODIFIED_MACROS
  18 #define SHA_Ch(x,y,z)        (((x) & (y)) ^ ((~(x)) & (z)))
  19 #define SHA_Maj(x,y,z)       (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
  20 #else /* USE_MODIFIED_MACROS */
  21 /*
  22  * The following definitions are equivalent and potentially faster.
  23  */
  24
  25 #define SHA_Ch(x, y, z)      (((x) & ((y) ^ (z))) ^ (z))
  26 #define SHA_Maj(x, y, z)     (((x) & ((y) | (z))) | ((y) & (z)))
  27
  28 #endif /* USE_MODIFIED_MACROS */
  29
  30 #define SHA_Parity(x, y, z)  ((x) ^ (y) ^ (z))
  31
  32 #endif /* _SHA_PRIVATE__H */