void encipher(unsigned long *const v,unsigned long *const w,
const unsigned long *const k)
{
register unsigned long y=v[0],z=v[1],sum=0,delta=0x9E3779B9,
a=k[0],b=k[1],c=k[2],d=k[3],n=32;
while(n-->0)
{
sum += delta;
y += (z << 4)+a ^ z+sum ^ (z >> 5)+b;
z += (y << 4)+c ^ y+sum ^ (y >> 5)+d;
}
w[0]=y; w[1]=z;
} |
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