reduced size of small JH
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e2a5b47463
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@ -103,24 +103,21 @@ void jh_next_round_const(uint8_t* a){
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}
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}
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static const uint8_t idx[]={112,80,48,16,96,64,32,0};
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static inline
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void group(uint8_t *a){
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uint8_t b[128];
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uint8_t i,x,y;
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uint8_t i,j,k,x;
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for(i=0; i<128; ++i){
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x = (((a[i/8+ 0])>>4)&0x8)
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| (((a[i/8+ 32])>>5)&0x4)
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| (((a[i/8+ 64])>>6)&0x2)
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| (((a[i/8+ 96])>>7)&0x1);
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a[i/8] <<= 1; a[i/8+32]<<=1; a[i/8+64]<<=1; a[i/8+96]<<=1;
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y = (((a[i/8+ 16])>>4)&0x8)
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| (((a[i/8+ 48])>>5)&0x4)
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| (((a[i/8+ 80])>>6)&0x2)
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| (((a[i/8+112])>>7)&0x1);
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a[i/8+16] <<= 1; a[i/8+48]<<=1; a[i/8+80]<<=1; a[i/8+112]<<=1;
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b[i]= (x<<4)|y;
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j=i/8;
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for(k=0;k<8;++k){
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x>>=1;
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x |= a[j+idx[k]]&0x80;
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a[j+idx[k]] <<= 1;
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}
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b[i]= x;
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}
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memcpy(a,b,128);
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}
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@ -128,13 +125,14 @@ void group(uint8_t *a){
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static inline
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void degroup(uint8_t *a){
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uint8_t b[128];
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static uint8_t idx[]={112,80,48,16,96,64,32,0};
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uint8_t i,j,k,t;
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for(i=0;i<128;++i){
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j=i/8;
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t = a[i];
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for(k=0; k<8; ++k){
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b[j+idx[k]]<<=1; b[j+idx[k]] |= t&1; t>>=1;
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b[j+idx[k]]<<=1;
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b[j+idx[k]] |= t&1;
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t>>=1;
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}
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}
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memcpy(a,b,128);
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