84 lines
2.6 KiB
Plaintext
84 lines
2.6 KiB
Plaintext
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xorArray = {0xAA,0x50,0x43,0x52}
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securetyKeyCalc = function(pucSeed,ucSecurityLevel){
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//SeedSec_t cal,key,seed;
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var seed = {0,0,0,0};
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var key = {0,0,0,0};
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var cal = {0,0,0,0};
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seed[1]=pucSeed[4];
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seed[2]=pucSeed[3];
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seed[3]=pucSeed[2];
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seed[4]=pucSeed[1];
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select(ucSecurityLevel) {
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case 0x01 {
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cal[1] = seed[1]^xorArray[1];
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cal[2] = seed[2]^xorArray[2];
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cal[3] = seed[3]^xorArray[3];
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cal[4] = seed[4]^xorArray[4];
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/*
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key[3] = ((cal[0]&0x0F)<<4)|( cal[0]&0xF0);
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key[2] = ((cal[2]&0x0F)<<4)|((cal[3]&0xF0)>>4);
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key[1] = (cal[2]&0xF0)|((cal[1]&0xF0)>>4);
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key[0] = ((cal[3]&0x0F)<<4)|( cal[1]&0x0F);
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*/
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key[4] = ((cal[1]&0x0F)<<4)|( cal[1]&0xF0);
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key[3] = ((cal[3]&0x0F)<<4)|((cal[4]&0xF0)>>4);
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key[2] = (cal[3]&0xF0)|((cal[2]&0xF0)>>4);
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key[1] = ((cal[4]&0x0F)<<4)|( cal[2]&0x0F);
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}
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case 0x03 {
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/*
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cal.byte[0] = ((seed.byte[0]&0xF8)>>3)^xorArray[0];
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cal.byte[1] = ((seed.byte[1]&0xF8)>>3)^xorArray[1];
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cal.byte[2] = ((seed.byte[2]&0xF8)>>3)^xorArray[2];
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cal.byte[3] = ((seed.byte[3]&0xF8)>>3)^xorArray[3];
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key.byte[0] = ((cal.byte[3]&0x07)<<5)|(( cal.byte[0]&0xF8)>>3);
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key.byte[1] = ((cal.byte[0]&0x07)<<5)|(cal.byte[2]&0x1F);
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key.byte[2] = (cal.byte[1]&0xF8)|((cal.byte[3]&0xE0)>>5);
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key.byte[3] = (cal.byte[2]&0xF8)|( cal.byte[1]&0x07);
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*/
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cal[1] = ((seed[1]&0xF8)>>3)^xorArray[1];
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cal[2] = ((seed[2]&0xF8)>>3)^xorArray[2];
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cal[3] = ((seed[3]&0xF8)>>3)^xorArray[3];
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cal[4] = ((seed[4]&0xF8)>>3)^xorArray[4];
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key[1] = ((cal[4]&0x07)<<5)|(( cal[1]&0xF8)>>3);
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key[2] = ((cal[0]&0x07)<<5)|(cal[3]&0x1F);
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key[3] = (cal[2]&0xF8)|((cal[4]&0xE0)>>5);
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key[4] = (cal[3]&0xF8)|( cal[2]&0x07);
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}
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case 0x11 {
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/*
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cal.byte[0] = seed.byte[0]^xorArray[0];
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cal.byte[1] = seed.byte[1]^xorArray[1];
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cal.byte[2] = seed.byte[2]^xorArray[2];
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cal.byte[3] = seed.byte[3]^xorArray[3];
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key.byte[3] = ((cal.byte[1]&0x03)<<6)|(( cal.byte[0]&0xFC)>>2);
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key.byte[2] = ((cal.byte[0]&0x03)<<6)|(cal.byte[3]&0x3F);
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key.byte[1] = (cal.byte[3]&0xFC)|((cal.byte[2]&0xC0)>>6);
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key.byte[0] = (cal.byte[2]&0xFC)|(cal.byte[1]&0x03);
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*/
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cal[1] = seed[1]^xorArray[1];
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cal[2] = seed[2]^xorArray[2];
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cal[3] = seed[3]^xorArray[3];
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cal[4] = seed[4]^xorArray[4];
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key[4] = ((cal[2]&0x03)<<6)|(( cal[1]&0xFC)>>2);
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key[3] = ((cal[1]&0x03)<<6)|(cal[4]&0x3F);
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key[2] = (cal[4]&0xFC)|((cal[3]&0xC0)>>6);
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key[1] = (cal[3]&0xFC)|(cal[2]&0x03);
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}
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else {
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}
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}
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var pucKey = {0,0,0,0};
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pucKey[1]=key[4];
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pucKey[2]=key[3];
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pucKey[3]=key[2];
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pucKey[4]=key[1];
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return pucKey;
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}
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