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#ifndef _BLASR_MD5_UTILS_IMPL_HPP_
#define _BLASR_MD5_UTILS_IMPL_HPP_
// ROTATE_LEFT rotates x left n bits.
inline unsigned int MD5::rotate_left (uint4 x, uint4 n){
return (x << n) | (x >> (32-n)) ;
}
// F, G, H and I are basic MD5 functions.
inline unsigned int MD5::F (uint4 x, uint4 y, uint4 z){
return (x & y) | (~x & z);
}
inline unsigned int MD5::G (uint4 x, uint4 y, uint4 z){
return (x & z) | (y & ~z);
}
inline unsigned int MD5::H (uint4 x, uint4 y, uint4 z){
return x ^ y ^ z;
}
inline unsigned int MD5::I (uint4 x, uint4 y, uint4 z){
return y ^ (x | ~z);
}
// FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
// Rotation is separate from addition to prevent recomputation.
inline void MD5::FF(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += F(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}
inline void MD5::GG(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += G(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}
inline void MD5::HH(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += H(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}
inline void MD5::II(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac){
a += I(b, c, d) + x + ac;
a = rotate_left (a, s) +b;
}
#endif
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