internal.h

Go to the documentation of this file.

 
#ifndef EMSHA_INTERNAL_H
#define EMSHA_INTERNAL_H
 
 
#include <cstdint>
 
using std::uint8_t;
using std::uint32_t;
 
 
namespace emsha {
 
 
static inline uint32_t
rotr32(uint32_t x, uint8_t n)
{
    return ((x >> n) | (x << (32 - n)));
}
 
 
static inline uint32_t
sha_ch(uint32_t x, uint32_t y, uint32_t z)
{
    return ((x & y) ^ ((~x) & z));
}
 
 
static inline uint32_t
sha_maj(uint32_t x, uint32_t y, uint32_t z)
{
    return (x & y) ^ (x & z) ^ (y & z);
}
 
 
static inline uint32_t
sha_Sigma0(uint32_t x)
{
    return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
}
 
 
static inline uint32_t
sha_Sigma1(uint32_t x)
{
    return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
}
 
 
static inline uint32_t
sha_sigma0(uint32_t x)
{
    return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >> 3);
}
 
 
static inline uint32_t
sha_sigma1(uint32_t x)
{
    return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >> 10);
}
 
 
 
} // end of namespace emsha
 
 
#endif  // EMSHA_INTERNAL_H