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/************************ sha-private.h ************************/
/***************** See RFC 6234 for details. *******************/
#ifndef _SHA_PRIVATE__H
#define _SHA_PRIVATE__H
/*
* These definitions are defined in FIPS 180-3, section 4.1.
* Ch() and Maj() are defined identically in sections 4.1.1,
* 4.1.2, and 4.1.3.
*
* The definitions used in FIPS 180-3 are as follows:
*/
#ifndef USE_MODIFIED_MACROS
#define SHA_Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
#define SHA_Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#else /* USE_MODIFIED_MACROS */
/*
* The following definitions are equivalent and potentially faster.
*/
#define SHA_Ch(x, y, z) (((x) & ((y) ^ (z))) ^ (z))
#define SHA_Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
#endif /* USE_MODIFIED_MACROS */
#define SHA_Parity(x, y, z) ((x) ^ (y) ^ (z))
#endif /* _SHA_PRIVATE__H */
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